Dynamic Column Sorting In Linq

Highlight the rep. When you create and modify IQueryable variables, no query is sent to the database. These columns can be obtained using the GetGroupedColumns method. I devised a LINQ Dynamic user´s query facility. Setting the range with Cells() seems easier to deal with since it is so dynamic. In the previous example of this article the SP GetCustomersPagedData was supporting the data paging but the sort column here was always the FirstName column. In this technique there is no involvement of java script as well. I wanted to use LINQ power to filter the data. The column created should be hidden by applying sizing and formatting. When I trying to sort a second time (e. You may have to register before you can post: click the register link above to proceed. IList tempList = apps. Topic: Dynamic Column Sort Posted: 13 Mar 2012 at 3:25am I've been asked on multiple ocassions if it's possible in CR (XI) to click on a column header (or anything in the report, for that matter) and re-sort the data by that field (ascending or decending would be a secondary question). 00 Aug-201712334. In this article we would like to show you how you could avoid sorting the original data, and create a dynamic, sortable chart using named formulas. So I have to pass somehow a User name as a parameter to a stored procedure. In this post I will create an example where selecting a column from prompt would influence 2 columns in analysis. In this article I show that this can be actually done very well for most of the common cases. In this example, the Underscore template engine is used. LINQ Order By Examples in C# The order by clause in LINQ is easy to learn due to its close resemblance to the T-SQL syntax. My problem is, I want to show selected column from database using a listbox by linq to sql. A Dynamic LINQ queries is needed when we need to retrieve a set of records based on different search parameters. In fact there are several options for doing this, including the use of expression trees. The range to sort can be as you have it as long as the last used cell in column D is in the last row of your table. "LastName". There are two properties SortDirection is used sort the GridView column by ascending and descending order. You can sort both asc and desc at runtime. Tag column. The data in Column E uses a VLOOKUP function based on the data in Column D, and I want this data to sort automatically, even when I change data from Column B. With this technique you can only have the column sorted either ascending or descending but not both. Priority will be the column which is maintained first. To create dynamic column, PrimeFaces provides columns tag with different attribute to perform sorting, filter etc. The figure below shows the grade sort beginning with Pre-K selected as the custom list to apply to the row field. In this demo, I create a gallery that has multiple clickable column headers to sort by. This post is about sorting using Linq. Can anyone help me with column-sorting on the fly where the user can click on a hyperlink on any. The ASPxGridView provides layout features, such as cell merging, templates, and support for master-detail data presentation allowing you to build grid layouts of any complexity. The issue I have with the linq implementation is that if the columns we are sorting on can change, I would have to have different lambda expression for all the possible permutations. I found an example in the VS2008 Examples [1] for Dynamic LINQ that allows you to use a sql-like string (e. C# Corner Q3, 2019 MVPs Announced. Turns out it was because I had tried to use my custom OrderBy on the Linq query before it had got the data records from the server, and hence it thought I was trying to run the natural sort in SQL. The eCommerce industry is booming and current retail trends show that 51% of Americans prefer online shopping. Create a calculated column which contains the information that the header is to contain, such as Report for year 1999 (concatenated text and date to string sub string extraction). Dynamic Sort; columns; List report; drill through; upgdevaluated. I came across the Linq Dynamic Expression API in the VS 2008 Beta 2 samples. C# - LINQ operation over DataTable with dynamic columns February 6, 2015 February 7, 2015 Ranjan Kumar c# , LINQ Recently I was trying to optimize one of my old code and wanted to use LINQ for this. Add a Refresh Data node (with the SQL query as the Data Source to be fetched) and an Ajax Refresh node (with the Table Records Widget as the Widget or Web Block to refresh). In transaction SBWP in the workflow table this field is being shown in a column DYNCOL_C4 of table SWLWP1 and the type of it is CHAR (length 80). NET Framework and most common. You may have to register before you can post: click the register link above to proceed. You can sort the object based on the URL parameter. next time i want to sort on col 2,5 and 7. where SqlMethods. The dynamic sort command (System. How do I dynamically apply this sorting information to my collection? Please note that sorting could be multi-layer, so for instance I could sort by LastName, and then by FirstName. Absolutely sorting at runtime. I use LINQ to SQL to get all products from a DB table and sort them by two fields – IsFavorite (boolean) and AddedOn (datetime). NET Forums / Data Access / ADO. This gives the ability to access relational database objects as normal. NET Data Model as you did in the page Entity Framework. But in real world we will always not have the data paging with sorting by just one column. I also do not believe that LINQ adds clarity to code. - Sort by employee age. Dynamic Data filters the products displayed based on the category you selected. When the user clicks on a column header to sort that column, flexigrid makes a POST call to my data service with "sortorder" and "sortname" parameters. However, I would like to sort them by number. Column A defines ID's and column B defines role. 2016–05–15 – [C#] LINQ Aggregation Methods – Sum, Max, Min, Count, LongCount, Average, Aggregate; 2016–03–15 – [C#] List – illustrative examples for all List methods. Steps to add this Feature to Your Report. The same way, use ThenByDescending method to apply secondary sorting in descending order. [CLOSED] hiding sort arrow on dynamically created acion column Hi I dynamically create an action column but don't seem to be able to hide the 'Sort' Arrow in the Column Header. Like Sort column 1, then Column 3, then column 2, then column 5 and so forth. This sample loads JSON and then queries values from it using LINQ operators. thanks, prassu. To format the date displayed in the GridView column, we can use “DataFormatString” to set the DateTime format in a Bound Column. I have a csv which I am reading and creating a datatable. For example if user select "F1" list sort according to "F1". The issue I have with the linq implementation is that if the columns we are sorting on can change, I would have to have different lambda expression for all the possible permutations. Search, sort, paging, insert, update and delete with ASP. The GetData function is called at two places, first inside the Page_Load event of the page and second inside the Country_Changed event handler which is. How do i Sort order of Dynamic Date Columns in report in Descending order in SSRS 2008 – Learn more on the SQLServerCentral forums. In this blog you will learn about dynamic LINQ multi sorting. Hello, played a little with orcas and went into a problem by building dynamic queries. LINQ – Left Join Example in C#; 5 jQuery Calendar Plugins that can be used on Websites; Free Open Source UML Tools; Hide a Table Column with a Single line of jQuery code; Create a Simple Image Slide Show using jQuery; ASP. Here's an at-your-fingertips reference to some of the most common and useful things you can do with it. However, it does not appear to work, it does no sorting, and the outputted SQL string is completely wrong. draw method. Suppose, as an example, the property is called startDate, and the user selects a LessThan operator, with a predicate of 2016-11-05. Drag a List Sort Column to each of the columns that will be used to sort the SQL query. But when I try to sort a DateTime field I still have this exception: Unable to cast the type 'System. 7 For projects that support PackageReference , copy this XML node into the project file to reference the package. orderable option simply allows or disallows the user from sorting that column. The Linq command for doing a descending sort on a list is OrderByDescending. In creating a general-purpose data access tool, you never know how database columns are going to align with the properties on your domain objects. The following query works fine when I know that I want to group by "Dim1" and "Dim2". The number of columns, name of the columns, data in the rows etc. You can use this tool to select which columns actually show on a report. One way to sort the customers is that you could write big switch statements that are depending on the user input and wrote a different lambda expression for each case of the switch statement that would set the ORDER BY and that's difficult and becomes difficult to maintain in the long run too. SomeObjects select t. In this example, the Underscore template engine is used. Dynamic LINQ. We’ll need some classses which have some properies. 0/LINQ [RESOLVED] Sort ListView By Multiple Columns If this is your first visit, be sure to check out the FAQ by clicking the link above. If have 10 different fields by which user could sort data, do I have to have 10 different queries? If you need to order by. Expression has a Compile method which produces an instance of T. With this technique you can only have the column sorted either ascending or descending but not both. The DataGrid widget supports the use of custom column templates and offers multiple methods for defining template markup. when removing it is not showing sort order. I plan to use it heavily. 6m developers to have your questions answered on Dynamic Column & Custom Sorting of UI for Silverlight GridView. Dynamic LINQ Queries with Expression Trees It's possible to build up dynamic LINQ queries or queries with several conditional criteria. FacebookTwitterLinkedInBelow is a sample code for how to add a column to a DataTable using vb. The SQL code is not stored in the source program, but rather it is generated based on user input. Number strings: five four one three nine eight six seven two zero ## Select - Anonymous Types 1 This C# example uses the LINQ Select method with a dynamic expression to produce a sequence of the uppercase and lowercase versions of each word in the original array. NET Data Model as you did in the page Entity Framework. Core package libraries to programmatically set a IQueryable column name in a LINQ Where query. In this post I’m going to show how you can build a Data Grid in ASP. Last but not least, another interesting, but a bit more complicated and for Linq less natural way to do it can be found here. NET Dynamic Data plus stored procedures. Getting just the columns you want from Entity Framework Posted by Colin Mackay 31 July, 2011 7 Comments on Getting just the columns you want from Entity Framework I’ve been looking at trying to optimise the data access in the project I’m working on, and the major stuff (like getting a piece of code that generated 6000 queries down to just 7. First the page shows the column to a listbox. Stored Procedures Versus LINQ to SQL for Dynamic WHERE Clauses June 23, 2009 — jopincar I was recently discussing the best way to solve the “bad plan gets cached for super-complex WHERE clause with a large number of @column IS NULL OR T. Net, SQL Server, GridView Here Mudassar Ahmed Khan has explained with an example, how to implement Sorting in TemplateField column using SortExpression property in ASP. NET project (C#) at the design time. Column = @column conjuncts" problem with colleagues at work. Ember-Table is a great way to display your tabular data in ember with some really nice features like draggable columns. This syntax is confusing at first, but makes sense. Set the DataField and HeaderText for the column (can add other properties also like following code). I am trying to order by multiple columns, here is my example and what I want to output Code ORDER BY lastName ASC, State ASC Output Hopefully you can see what I am trying to achieve, but I don't get there all it does is sort the result by lastName and ignores the states. above is working fine to return columns from list using LINQ. I would like to share how to use a dynamic LINQ library in C#. In the ProductCategory drop-down control, select a category. How to format DateTime in GridView BoundColumn and TemplateColumn?,Most often, we will get requirements to display date in GridView column. Using Entity Framework and DataGridView to add, delete, and edit rows of a table in SQL Server Express database. I generally publish my reports on to Tableau Server where sorting is easy by using the Tableau toolbar but I wanted to see how to do this without using the toolbar. At the required position or event just create the object for the BoundField. Although. With or without the StringComparer, the records are sorting case sensitive. When trying to implement a Business Logic Layer (i will refer to this as BLL) with linq one thing that is an annoyance is sorting. This step-by-step article describes how to sort a ListView control by a column in your Visual C# application. NET Framework component that adds native data querying capabilities to. NET code, but use VB. I have a string that reflects the name of the property the collection should be sorted by. If we make any mistakes in the sorting string and click on the "Apply Sorting" button, a modal dialog box is shown telling us to correct the sorting string and try it again. So, it needs a strong-typed context to create columns. The link contains a Dynamic Query Library provided by the LINQ team to dynamically construct LINQ queries. Sorting does not work with. Dynamic Expressions and Queries in LINQ Database applications frequently rely on "Dynamic SQL" — queries that are constructed at run-time through program logic. Here we use the LINQ orderby keyword to sort a List by any property. Entity Framework, dynamic sorting and pagination Suppose you need to paginate and letting the user choose the sort field in entity framework, lets see how you can accomplish this. If you're building out a UI which incorporates a list view web part, you can also perform the filtering using Javascript in response to your UI events, hooking into the LVWP filtering code. Building Building a Dynamic Sort Columna Dynamic Sort Column - Free download as PDF File (. Dynamic we are able to avoid the ifs and switch statements, we are iterating over the columns on which sorting is applied by user and we are ordering rows according to that:. Dynamic Query Library. Linux, android, bsd, unix, distro, distros, distributions, ubuntu, debian, suse, opensuse, fedora, red hat, centos, mageia, knoppix, gentoo, freebsd, openbsd. NET Array Sort and Reverse; What is array sort in JavaScript; Copy Array in C#; Sort method in ArrayList; LINQ ThenBy and Any operator in VB. Dynamic LINQ Queries with Expression Trees It's possible to build up dynamic LINQ queries or queries with several conditional criteria. If some other sorting is required for a column you can easily set the sort function for that column. Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. So sorting, paging, columns names facility are created without much more coding. What I do in C# is to write multiple lines and use a ternary operator to decide if it's used (sort of like an inline if/then statement that linq does allow). It allows dynamic string based querying. This article shows how GridView can be templated programmatically at run time and how is it possible to do edit, insert and delete operations on it. I highly recommend looking into the dynamic library. How to start an eCommerce store was one of the most-requested tutorials from our audience. NET Dynamic Data plus stored procedures. NET code, but use VB. MUST be nested inside of a Table tag. Two-dimensional Arrays Daniel Shiffman. These are the links to their articles:. When developing data-driven applications there comes a point when data is to be displayed in a tabular format, such as a data-bound grid or other such control interface. Net A function named GetData is used to fetch the records from the Customers table and return them in the form of a DataTable. To work with the dynamic LINQ library you need to download and install file in your project. In this tutorial you add sorting, filtering, and paging functionality to the Students Index page. We found that the ASPXGridView is not able to create automatically the columns for such a object. Also a Prompt SortTable with Sort Parameter is provided by the Library, to be displayed in Prompt Section 2. IBM Cognos Dynamic Sorting of a List Report - Free download as PDF File (. 6m developers to have your questions answered on Grid with mix of static and dynamic columns -- need sorting and filtering of UI for ASP. 2016–05–15 – [C#] LINQ Aggregation Methods – Sum, Max, Min, Count, LongCount, Average, Aggregate; 2016–03–15 – [C#] List – illustrative examples for all List methods. I also have every column in the report set up for interactive sorting based on the column header/column it shows, but not sure that is necessary here, I just wanted to put that out there just in case. The Excel SORT function extracts and sorts a list of unique values from a range. Search, sort, paging, insert, update and delete with ASP. Earlier we used to do this by using drill through and up/down images. We can do sorting like this data. For example, you can use > Expression. My goal is to be able to define a default sort column. If it is necessary to make the dynamic sorting in descending order, use the =LARGE() function. costumers select new {c. For example , myQuery. Dynamic Expressions and Queries in LINQ Database applications frequently rely on "Dynamic SQL" — queries that are constructed at run-time through program logic. The dynamic sort command (System. This is not acceptable. The LINQ infrastructure supports similar capabilities through dynamic construction of expression trees using the classes in the System. Points of Interest This article presented a small utility class to sort an " IEnumerable " of objects on multiple fields by the field names provided at run time using Linq. dynamic sort using single field is working, but when there are multiple fields, it is not possible. Remember also that this post is on the outer outer edge of what you'd want to do. Secondary Sort Examples Secondary Ascending Sort. For every row in the DataTable, I need to retrieve an appropriate field/column from the results. The LINQ Select operator is a type of projection operator, which takes a collection of items as an input, performs some sort of projection on the items in the collection and returns the same number of elements for the output. The projection performed on the collection is specified by the lambda. Enable dynamic sorting in Ember-Table. When a property related to _trackxxx column is declared with readOnLoad and readonSave true and persistent=false, the reading of the column is done correctly by load procedures but not by the save procedure. using System. It is obvious that when we are working on business objects or Entities in our application, we will need its corresponding collections. Use the column filters to sort information and click on an item to view its details. The trick about subset is certainly, on the syntax side, the most “perverse” of the 7, but is a good demo of what Linq can bring to the developer who want to go further. The parameter value that is actually passed is the element name that you want to regroup the data by. In SELECTION-SCREEN when i enter the range (for eg: 4 to 8) in FISCAL PERIOD, i do not get the output in order. linq orderby multiple columns dynamically So, it's been a while, but I thought I take moment and do my annual blog post ;). I also do not believe that LINQ adds clarity to code. If you are working with Datagrid control than check out my article Creating Dynamic Bound and Template Columns in Datagrid Control. Generating dynamic LINQ expressions needs a bit of understanding on the IQueryable interface. Right column placement outstripped the other placements by about $0. Gets sum of values from list of integer numbers. In the earlier examples the list that we sorted changed its sort order when we executed the command Sort on it. The LINQ Select operator is a type of projection operator, which takes a collection of items as an input, performs some sort of projection on the items in the collection and returns the same number of elements for the output. Net A function named GetData is used to fetch the records from the Customers table and return them in the form of a DataTable. Join a community of over 2. Here you will set what kind of sorting you want to see. Points of Interest This article presented a small utility class to sort an " IEnumerable " of objects on multiple fields by the field names provided at run time using Linq. I need an excel VBA to achieve this functionality. First you must learn a few things about being dynamic with linq. Result highlight text %} LINQ Execute Test. The basic idea is to modify the compare function so it compares the desired properties' values. Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. now after i execute the report, can i sort on a specific number of columns. If some other sorting is required for a column you can easily set the sort function for that column. Here's an at-your-fingertips reference to some of the most common and useful things you can do with it. I'm still learning this deeper stuff myself, and I'd say that while this meta-LINQ stuff is powerful, it's too complex to generate dynamic LINQ. At runtime using the OnRowDataBound event of GridView, controls like TextBox, Button, etc. NET; sort in Window Server 2008; Sort The Columns Of Grid View In VB. Then you need to connect to the BookStoreDB database and create ADO. Hi All, Can someone help me with how to extract values from datatable using LINQ. You also create a simple grouping page. NET GridView. It is super cool! :D So today I wanted to check how I can grab data from all tables that are mapped in my LINQ to SQL mapping file. I cant sort one by on as the sorting by the first field will be lost. This often useful for when it is necessary dynamically add to a Where Clause and/or the Sort Order. I have a sheet that I would like to add a button that will perform an customized sort on multiple columns. I'm finding it difficult to sort dynamic internal table. Sorting in C# Generic List(List) Introduction. Then drag and drop a DataGridView control on the form. It allows dynamic string based querying. Learn how to use LINQ in your applications with these code samples, covering the entire range of LINQ functionality and demonstrating LINQ with SQL, DataSets, and XML. Anyone got this working before?. OrderBy(x => x. We can create a join with the SelectMany operator to see books’ name with authors. NET that allows sorting via the middle tier. Project Description Extends System. Grouping Results in LINQ Complex queries can be solved with a combination of simpler LINQ queries, anonymous objects and the Group/By/Into clauses. It returns sum of numeric values in collection. Dynamic assembly when trying to find a better way to implement our sorting logic, it turned that Scott Gu and the Linq team already developed and distributed an assembly addressing the need. MUST be nested inside of a Table tag. Scribd is the world's largest social reading and publishing site. To work with the dynamic LINQ library you need to download and install file in your project. Paging & Sorting a GridView with EntityFramework Posted by Ian on Saturday, 5 February 2011 / Labels: Entity Framework , GridView , ObjectDataSource I've seen many different ways of paging and sorting data in a GridView or ListView, most of them seemed either cumbersome or over complicated. net gridview sorting functionality when gridview datasource is Anonymous Type. Bottom line: Question is how to set the rKeyRange to sort on 2 columns and set it dynamically as I move down the sheet. How to start an eCommerce store was one of the most-requested tutorials from our audience. Dynamic Expressions and Queries in LINQ Database applications frequently rely on "Dynamic SQL" — queries that are constructed at run-time through program logic. Can I get the column name as a string when using LINQ and SqlMetal?. However, I would like to sort them by number. We’ll need some classses which have some properies. However, this column is nullable. Initial data is a list of some names in any order. I am trying to order by multiple columns, here is my example and what I want to output Code ORDER BY lastName ASC, State ASC Output Hopefully you can see what I am trying to achieve, but I don't get there all it does is sort the result by lastName and ignores the states. LINQPad can be thought of as a "scratch pad" for writing and testing LINQ to SQL queries (and for that matter, any type of LINQ query -- LINQ to Objects, LINQ to XML, etc. The columns to sort is dynamic where it may be 1 or 3 or may sometimes 10. Linq-to-Entities Dynamic sorting Entity Framework Tutorial EF Tutorial Getting Started Model Querying Data Saving Data 3 rd Party Libraries Knowledge Base Online Examples. NET MVC - Using Resource Files to Manage String Constants. The following example demonstrates how to use the orderby clause in a LINQ query to perform a primary and secondary sort of the strings in an array. Then you need to connect to the BookStoreDB database and create ADO. The problem is I cannot figure out how to write my linq statement to sort dynamically and account for data type and ascending/descending options. Dynamic Column Sorting – Ascending/Descending Toggle without JavaScript This document defines a method for rendering a Cognos list report in HTML so a user can click on a column heading to sort on that column. I have spent quite a bit of time searching the web for ways to dynamically specify columns at runtime using LINQ (with not much success). So, 90 % of the content is output on them. Insert a new column at the beginning of the original data. I would like to add dynamic sorting to the gridivew so the end user can sort by multiple columns (in which ever order they prefer). A Dynamic LINQ queries is needed when we need to retrieve a set of records based on different search parameters. will be added to the Dynamic TemplateField columns. 16 Answers are available for this question. LINQ is a data querying methodology that provides querying capabilities to. All your code in one place. How can I dynamically create Linq to EF query to select the pass-in column. Suppose there is no way to solve issue 1, then the way of getting only the desired columns from the DB, is doing a dynamic LINQ query (as done in the "Partial" with an assumption that issue 2 is solvable), is there any way to take from the grid which fields are needed, (all the visible columns, filtered-by columns, etc. It is working good without dynamic columns. First, let's create the tables in SQL Server as shown below. In this article I'm going to explain how to perform sorting in ASP. The link contains a Dynamic Query Library provided by the LINQ team to dynamically construct LINQ queries. I came across the Linq Dynamic Expression API in the VS 2008 Beta 2 samples. So, you need to use a strong-typed datasource so that the Grid can obtain columns correctly. Help! Re: Automatically Sorting Dynamic Data. Info: The identifier "element" is entirely arbitrary, and it is just declared in each individual query. You can use this tool to select which columns actually show on a report. Read rendered documentation, see the history of any file, and collaborate with contributors on projects across GitHub. Hi how do i translate all rows into columns , with sum of product if duplicate product considering first column will generate as columns name using LINQ. Due to the strong typed nature of LINQ direct LINQ syntax can't be used for this sort of query, but there are a several ways to work around this by using dynamic expressions. Dynamic Column Sorting - Ascending/Descending Toggle without JavaScript This document defines a method for rendering a Cognos list report in HTML so a user can click on a column heading to sort on that column. I am creating a KPI table 'KPIs Liquidity' with a manually specified numeric sorting column. > or IEnumerable> collection. The Column attributes specifies that the Name, Country, and Year properties are mapped on columns with the same name from the table. I then turn that type info into an EF SQL statement and return an ObjectQuery with no tracking. will be added to the Dynamic TemplateField columns. You can extend the DataGridView control in a number of ways to build custom behaviors into your applications. How to start an eCommerce store was one of the most-requested tutorials from our audience. Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. var users = ( from t1 in _context. NET The DataGridView control is designed to be a complete solution for displaying tabular data with Windows Forms. roleID equals t2. The challenging part is the dynamic OrderBy. The months being used changes as I filter down to my current view. The link contains a Dynamic Query Library provided by the LINQ team to dynamically construct LINQ queries. SELECT multiple columns from DataTable using LINQ in C# and VB. So what is your requirement,explain clearly. In this article we are going to implement these dynamic filtering and sorting along with pagination and see how we can achieve the same in less code and with more information. JqGrid+ Traditional asmx webservice + Multiple search + Sorting Using Custom Linq Extension Methods 23 Mar I’m back to experimenting with jggrid again, this time trying to get server side multi search and sorting. a grain in water, as was first seen by Brown);. DynamicLinqCore implements server paging, filtering, sorting, grouping and aggregating to Kendo UI via Dynamic Linq for. You may have to register before you can post: click the register link above to proceed. OrderBy(x => x. Sorting with multiple columns using CASE – Learn more on the SQLServerCentral forums. Ascending: We see that the first query expression and the second query expression both perform an ascending sort. I would use a FieldInfo tool to get the column names. Scribd is the world's largest social reading and publishing site. IBM Cognos Dynamic Sorting of a List Report - Free download as PDF File (. 00 Dec-201745000. The number of columns, name of the columns, data in the rows etc. If you're building out a UI which incorporates a list view web part, you can also perform the filtering using Javascript in response to your UI events, hooking into the LVWP filtering code. How can I dynamically create Linq to EF query to select the pass-in column. PowerQuery is sorting these columns alphabetically left to right. The strings are sorted primarily by length and secondarily by the first letter of the string, both in ascending order. The problem is I cannot figure out how to write my linq statement to sort dynamically and account for data type and ascending/descending options. developerWorks forums allow community members to ask and answer questions on technical topics. obout inc - ASP. A Column will be added dynamically and will contain the yearly salary of each employee in an employee's table. You can use the LINQ Dynamic Query Library, how to order by a dynamic column name in EntityFramework? How can I do an OrderBy with a dynamic string parameter. # re: Dynamic Expressions in Linq to Sql @Mike - interesting but that applies more to LINQ than to LINQ to SQL. I found an example in the VS2008 Examples [1] for Dynamic LINQ that allows you to use a sql-like string (e. Dynamic Expressions and Queries in LINQ Database applications frequently rely on "Dynamic SQL" — queries that are constructed at run-time through program logic. I have a function with pass-in parameter as column name. Advantages of LINQ. Introduction. There are situations when you need the columns to be created dynamically. You can use F# implementation of LINQ, which allows you to write queries directly in the F# language or you can use standard ADO. I'am providing you the two links. I would like to be able to sort Column1, Column2, Column3, etc. To do that we drag and drop a GridView control on the asp. To work with the dynamic LINQ library you need to download and install file in your project. All your code in one place.