Linq order by dynamic field The set of String type parameters are "search" (for search textbox value), "searchfield" (what to search), More information, as requested. The parameter will be Then this would be repeated for each column (plus an else clause on each to order by descending). OrderBy(b). System. 0 / 2. status ='draft',second one select c. I cannot figure out how to do this with a Linq query. ThenBy(m => #1: The Case. Core library to order a list, I am getting a NullReferenceException. Direction=desc and this would allow the sorting to be set via query. Select property by string name using LINQ. AsEnumerable() . 35. I got then this: var ascendingQuery = from data in dataList orderby data. Skip(tblsize) . So I have changed my approach and now pass the column name to the What LINQ are you using: LINQ to SQL / EF 6. You'll still need to map filter names and properties on Then I call this function in a loop, for each column that user requested sorting. NET, and is one of the C# Dynamic LINQ OrderBy examples using an Expression Evaluator. Field=SomeField and Sort. ToList(); If "dynamic" in the title of your question refers LINQ order by null column where order is ascending and nulls should be last. I am working with asp. There's also an updated version available on CodePlex . Guid ). It's still a good idea to do sorting after Distinct() to reduce the size of results LINQ order by null column where order is ascending and nulls should be last. Date). Using Linq order by an If you create a Filter object that contains criteria for Linq that normally goes in a where clause like this: var myFilterObject = FilterFactory. 20. post process the query expression with custom Instead of that you need to create an expression to select that property. return myList. Linq; var sortedTeams = nflTeams. DP_ARTICLES orderby article. SubmissionDate The way to sort in LINQ is: var sortedList = myList. So, you need to assign to a variable and end with ToList() to use the new Using reflection and expression-trees you can provide the parameters and then call OrderBy function, Instead of returning Expression<Func<Task, T>> and then calling Perhaps the easiest way to get LINQ to sort on arbitrary runtime data is to install the System. Select(m => m. Then I I have an object Orders (Order, Product, Cost, Price, Client, Day). Use Dynamic LINQ and use a string OrderBy . Commented Sep 24, 2013 at 6:50. The problem is that Expression<Func<T, object>> definition generates You can do this by modifying the order of the public properties in your LINQ to SQL file. OrderBy(c) still uses the output of the preceding sort, and reorders the whole thing, but it preserves the existing order (from the Could you please show how do you plan sort without dynamic realisation? Just LINQ query. What I do currently is gather the user's request and create a list ofKeyValuePairwhere theKeyis the column name and theValue` is the desired value of the Here's Microsoft's OrderBy that takes a string of field names (from Microsoft's Dynamic Linq): public static IQueryable<T> OrderBy<T>( this IQueryable<T> source, string I have a little issue. x / EF Core 2. Second Approach: When you have Dynamic Linq: The Dynamic LINQ library exposes a set of extension methods on IQueryable corresponding to the standard LINQ I have a list of a class with about 50 fields. Dynamic; My goal is to pass in the whereClause variable into the emailList query (see screen shot). @ardalis had recommended that I review suggestions in a StackOverflow post For example, I want to allow the user to order some search results by a property of their choice (using LINQ). AsQueryable() To expand on my suggestion, . OrderBy(c => c. It’s not included in . Id, FName, LName, TelNo I have a table that stores a list of clients. @BKSpurgeon It basically creates a new I am a bit confused on LINQ syntax and I'm not sure if I'm doing it right. ThenBy(t => MyList = new ObservableCollection<BaseClass>(MyList. we will get column name and have to sort data. Is Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Typically I would provide the query string parameters Sort. * from c where c. Keep NULL rows last on Dynamic Linq Order By. a). Dynamic Linq Order By Variable. Dynamic dynamic column name and parameter. See here Dynamic LINQ (Part 1: Using the LINQ Dynamic Query Library) Then you can make calls like this: var query = Allows a bit what dynamic LINQ does with strings, but wraps the operation in a object, Filter entities, then sort on dynamic field. Conference) . Share. OrderBy(r => Order the items by upload date (descending so newest first) Then group them by short code - so within each group the items are still sorted; The groups are still in descending order, so no The variable sortColumn is a String, which specifies the column need to sort and the variable isAcending is a bool, LINQ Queries with dynamic Order By. Modified 12 years, or you can use the Dynamic Linq library. so finally result will be like first row = 6 then 7 Result The sorted list of words (by length): apple cherry blueberry OrderBy - Simple 3. In this example, I will use JSON Body as a payload. Question ). Use Expression tree classes and build your own OrderBy lambda 2. LowestPrice ascending Hope helps someone. I would also like to see if I can do I want to use multiple order by in my query, and i am using LINQ. Dynamic order by clause in a single LINQ query. Modified 6 years, 1 month ago. 1 / 3. I am trying to dynamically order a list of products. Let's say I have a basic AcctNum, AcctDate and AcctName record I know PredicateBuilder can do And and OR stuff but how do I make a dynamic ordeby linq query . 26. OrderBy(field)); MyList is actually a You can use the approach from my answer to Dynamic Linq + Entity Framework: datetime modifications for dynamic select, i. Name or Staff=> I'm creating a proof of concept that uses Lambda/LINQ for dynamic where and orderby. Ask Question Asked 12 years, 7 1 . designer. To resolve, you can add the following small class I make a number of calls to my repository layer where I need to do some basic ordering on a single field in either ascending or descending order such as: The result of GetAllList() is a List<T>. (Here's a link to documentation about the library's This custom CustomOrderBy method demonstrates how to build dynamic LINQ queries for flexible data sorting. . Dynamic string in linq c#. var list = someelements; I also have a parameter which says by which property and what direction I should order list data eg. If you want to do a completely dynamic LINQ query you should check out these posts by Scott Hanselman. net; linq; sql-order-by; Share. User_Details . ART_NUM descending select new An overview of a helper class to build dynamic order by clause in LINQ query in C#. Division) . Property1). Expression API to build your LINQ predicates (lots of work but a nice reusable solution if done right). OrderBy(m=>m. id 2 This is using System. Commented Mar 31, 2017 at 13:11. public static class Utility { //makes expression for specific prop public static If you want to use method syntax, use ThenBy(), as others suggested:. pmeyer pmeyer. OrderByName("Employees. Let’s take a look at the table format we have : From that list, I tell you that centroCosto, servicios and valorTotal fields are known and fixed, so, I can order that collection by any of those fields using reporte. EHR". This works fine with My query works as I would expect, but I also want to order the query by arbitrary field(s) in the anonymous type. Currently I have Func<IQueryable<Customer>, IOrderedQueryable<Customer>> orderBy = o => o. ThenByDescending(obj => obj. Sql query which i am trying to implement in linq. g Price, Code, rating, Now I have so far this orderby for my linq. Dynamic Order By in Linq. I don't like Concat() and ToList() in there. I have using @Veverke: OrderBy(a). private void Sort(IQueryable<Item> items, string fieldToSort, string sortDirection) { items = items. But inside this extension the string will be parsed to Lambda. I want to order by first column You could use Dynamic Linq for this purpose. The code Back to: LINQ Tutorial For Beginners and Professionals LINQ OrderBy Method in C# with Examples. FirstName) In I've got a scenario where I will need to order by on a column which is a navigation property for the Users entity inside my EF model. The dgvComponents is a datagridview that is bound to an observable collection. but i dont know why these are not working I have a LINQ query that I want to order by the most recently created date. Keep in mind that building expressions dynamically can be This method performs a stable sort; that is, if the keys of two elements are equal, the order of the elements is preserved. I am retrieving a lot of records from the database and to facilitate filtering, I need to pouplate DropDownLists The problem is that the API stores the number in a string field instead of as an int and Linq barfs on the conversion attempt. OrderBy($"{fieldToSort} {sortDirection}"); Learn the System. Create an OrderBy C# Eval Expression How to use LINQ with Dynamic Expression. From this source:. Finally, This only works in situations where you have a numeric field, but you can put a minus sign in front of the field name like so: Linq and order by. The following code works for the where expression, but I can not figure out how to I have data arranged in this order in sql. Linq and sorting null fields. Items where !t. Linq query to orderby. Specification nuget installed. Ask Question Asked 13 years, 9 months ago. I am looking How to Conditionally sort the column using LINQ OrderBy Clause. OrderBy(t => t. How to dynamically add OrderBy() to an List<Category> categories = db. var companies = session. dynamic. net, Asp. If you know the fieldnames on compile time, why would you specify the sorting column name as dynamic? – Jeroen van Langen. Field<DateTime>("FolderDateTime")) When I try to use the System. GetFullCategoryName(Category. 3. Order). Sort by second field if the first field is null. The column selected to orderby is "Month10. For example if user select "F1" list sort according I have a table that I am writing some C# selenium automation for and need some help using Dynamic Linq. for example I want sort Department. Does this answer your So I'm using Datatable. This small library (only one single source file) contains extension methods of IQueryable<T> like: LINQ Queries How to perform LINQ OrderBy based on a stringname for column. If the sidx is not part of your resultset then it is like ordering by a constant. I have a SQL table with over 800k records that need to be You probably want to use the ThenBy extension method to be able to sort by multiple fields. However I've noticed it fails because it always sorts on the last column used, ignoring the other ones. C# Linq OrderBy filtering null or empty values to be last. by selecting the column in a grid view. Please read our previous article discussing the basics of LINQ If you have some sort of property in the group that you can use to sort, then yes it can do this in one go. Using LINQ, I'd like to be able to order by [Order] or if [Order] is null then order by [Name] here is my I should sort parent based on a field of child. LINQ - Complex How to get dynamic field in LINQ. I write a query with dynamic sorting as follows: public static IEnumerable<T> I'm trying to generate a LINQ OrderBy clause using lambda expressions with an input of the column name of an entity as a string (in the "sortOn" variable below). Delivery. SQL) as possible. In LINQ to SQL In order to do this, I have to pass in which field to sort by. GetProperty(property); return input. Hot Network Questions What is the accent of words with the The answers I have seen so far show passing a string which contains a custom order by clause into the OrderBy, which is close to where I want to be, but how in my case How to make order by Column variable because I have a dropdown on page and I want to show grid according to sord order selected in this Dropdown e. In order to ensure we only return My requirement is to return all rows in descending order of end_date - BUT the NULL values must be first, and then descending order of start_date. var sortby = "Name"; var I had another question similar answered here on NULL values being last on an order by. ToList(); I want to order it however also using the end date. The easiest way is to use the Dynamic LINQ public List<dynamic> Sort<T>(List<dynamic> input, string property) { var type = typeof(T); var sortProperty = type. // returning property as lambda from string public static Func<T, object> Use System. OrderBy with Dynamic Linq. Order by dynamic parameter. LastName) . I think I'm doing something wrong inside the OrderBy (). Linq. LINQ Order I have a list which I need to order eg. OrderBy(c LINQ Dynamic expects it. So the result should look like I have a query just want to order by if ticketStatus = Attended first then Issue, then Unpaid, then Cancelled. Sorting as a string isn't suitable because the values aren't all the I filled a datatable from excel as dt3. Linq Dynamic OrderBy. This article discusses HelperClass which is used to build OrderBy extension like dynamic Use the OrderBy() and ThenBy() Linq methods when you want to sort a list by multiple fields, like this:. 890 7 7 silver Get value from dynamic field I sort the results using Dynamic LINQ. 0. Month10 is a SubObject and EHR is the property. I want to have a Combobox that user can select according to what field list will sort. Entity Framework - LINQ - Dynamic Column Names. The first, is to design the API request & response. Dynamically building a LINQ by adding a Where clause or OrderBy clause coming from user input is a very Linq Order by when column name is dynamic and pass as a string to a function (2 answers) Closed 8 years ago. In the two examples below, #1 works just EF Core attempts to translate as much of your query to a server-side query (i. OrderBy(sortcriteria) . PayrollNo"), isDescending) Two parts of query sql: The first one select c. Improve this question. When you click the column header, this statement: <pre><code> I am trying to convert this Func to use string values using linq. g. When a sort field is specified We did something similar (not 100% the same, but similar) in a LINQ to SQL project. LINQ Dynamic sort The order of the data is seldom hard coded, you want the user to define at runtime how the data should be ordered, e. OrderBy(r => What I needs is to be able to insert a specific field in the midst of the orby clause. e. status. But for the moment I have no really >good way around that. ThenBy(t => t. OrderBy(x => x. OrderBy(person => person. OrderBy( x => x. Dynamic? 0. In this article, I will discuss the LINQ OrderBy Method in C# with Examples. OrderBy(m => The OrderBy method will sort items in ascending order by default. c#. This C# example uses the LINQ OrderBy method with a dynamic expression to sort a list of words alphabetically. Dynamically Sorting with LINQ. So in your case, you want to order on NetStatus, however, if you just did reports. Now, I want to order this list with both QuestionDataTypeId and DisplayOrder, but want this QuestionDataTypeId = 0 at last. OrderBy(r => r. Commented Sep 9, 2021 at 17:16. net mvc 5 and C#. Items && t. How can I order by Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about In addition to @Daniel Brückner answer and problem defined at the end of it:. But the catch here is I want to push all the empty category You could try to do this using the (somewhat old) Dynamic LINQ library: var data = entity. Ask Question Asked 11 I'm using this dynamic linq orderby function which I got from here. Multiple Dynamic Order By in Linq to Entity Here you have only one string representing the column to order-by, so you can only build the expression to order-by. (notice I placed the field value in 'Value' Dynamic Linq Order By user defined sequence. Dynamic NuGet package. In contrast, an unstable sort does not preserve the order of elements Assuming that you are using the DynamicQuery Helper files from the Microsoft sample library (Which are in the namespace System. Keep If you're familiar with Linq, you have undoubtedly used the popular "OrderBy" extension method. It lets you create OrderBy clauses, Where clauses, System. I tried: var itemList = from t in ctn. net MVC Controller serving up Json data. Order. Dynamic Linq Select from String Value. LowestPrice == null, p. i am new to LINQ, i have tried the examples given on stackoverflow. Net Dynamic Sorting of Anonymous Types If you’re familiar with Linq, you have undoubtedly used the popular “OrderBy” extension method. They will choose the "order by" property in the UI - as a string value of course. Thanks var duplicate = dt. Dynamic allows us to set string value in OrderBy method. In versions before 3. GetBlank(); myFilterObject. Follow answered Dec 5, 2015 at 4:22. Here's the code: public static IQueryable<T> OrderBy<T>(this IQueryable<T> source I would like to create the following query: group grades by student name, order each student group by grades, and order groups by max grade in each group. I am using . Take(count) . Currently, I am trying to write dynamic order by query using linq. OrderBy((x,index) => I have a simple data class that has this signature: internal interface IMyClass { string Letter { get; } int Number { get; } } I wish to be able to sort this data based on a field NOTE: . 2. For example, I went into Northwind. sample code; IQueryable<Parent> data = context. select * from tbl order by case when To sort by a dynamic (runtime) column name, you have a few choices: 1. Advanced dynamic LINQ solution can allow you to This Worked to order fields with values on top and null fields on bottom i used this : orderby p. AddCondition("Salary", I need a Linq query which joins multiple tables and need to use order by clause having conditions dynamically, that gets from a post request parameter. OrderBy() and . ThenBy(person => person. I want to first sort the records based on category and then by country. Dynamic; LINQ provides this out of the box using the ThenBy function, no need to use Dynamic Linq or anything – Panagiotis Kanavos. An implementation might take a string or enum for the column plus a This article explores building a custom LINQ method named CustomOrderBy that allows you to dynamically construct and apply sorting logic based on a list of criteria, OrderBy Column Name as String using Linq C# . E. ex- I have a Property Filter. Dynamic. 0, any code that could not be converted was silently run I've two fields Category and Country. But the System. Property ascending select data; var You must order by a column that is in your result set. OrderBy(obj => obj. Table1. It is akin to applying a secondary sort order in T-SQL like : Select * from Customer order by It needs to support Linq-to-Entities as I'd like the order-by operation to be done in SQL. Improve this answer. I have dynamic linq query with OrderBy. dynamic linq query - OrderBy with properties that are null. Core or Dynamic LINQ is an open-source query library that extends the functionalities of LINQ by making the queries dynamic. Select( x => new { Guid = Guid. listOfPeople. In OrderBy could be many ex> Name, Address, City etc and Dynamic linq order by on nested property with null properties. ThenBy() return an IOrderedEnumerable, which does not modify the original object. string [] This article discusses HelperClass which is used to build OrderBy extension like dynamic SQL. I'm trying to do something simliar to these posts: LINQ Sort by Multiple Fields Multi Column Sort If your field data type is DateTime then you can use: var sortedTable = Folder_table. NET by Dynamically building a LINQ by adding a Where clause or OrderBy clause coming from user input is a very common scenario. Unfortunately, this method we are trying to add dynamic Order by different column in multiple tables. For example, this code will group by an int property and determine the The result of this function is used in both the query's SELECT list and its ORDER BY clause: select Category. . Product: price (int) name (string) So far I have managed to get the following: string columnToOrderBy = "price"; I would like to change this to dynamic linq to order by column headers. Dynamic LINQ It is definitely doable but does get alot more complicated. 1. NET 4 / EF 4. Creating a LINQ Thanks Alvin. status <> 'draft' order by c. AsQueryable(). Like so the order I would want this in as. LINQ orderBy with possible null While the question is tagged linq-to-entities, the code is using Enumerable where Distinct() does maintain order. – Svyatoslav Danyliv. Dynamic, a small library on top of LINQ. Take(50); would work for an in memory Building LINQ Dynamic Order Clause, But Cast Field. Include("SubCategories"). 7. By default the ordering is: FIELDA, FIELDB, FIELDC, FIELDD. ToList(); I have a column on my categories table called "Order" which simply holds LINQ Queries with dynamic Order By - more than one field. 5. I used the following there should be a way to take an sql expression on the I don't know how to make a dynamic Linq query. LINQ Dynamic sort The ThenBy operator applies a secondary, ascending sort order to the sequence. 1. OrderBy where my You can use Dynamic Linq for dynamic filtering and sorting. Now, given that the numeric representation of a boolean is: false = 0; true = 1; false values will naturally come The dictionary definition is ok - there is no good way to declare it to have values with different type. LINQ is a great addition to . The method currently works as intended, however I'd now like to prioritise non-null I've a very simple LINQ query to select dates from a table column - and I want to order by the date values: var allDates = db. NewGuid, Question = x } ). The "orderBy" What I like to do is to order by ID by ascending and then get the first value of Counter, SrvID which are identical (if any). endDate == null. Ask Question Asked 6 years, 1 month ago. OrderBy and Filter. DeliverySelection orderby t. Core library, its features, and get to understand how to use Dynamic LINQ queries in your C# applications. Some SubObjects don't LINQ Queries with dynamic Order By - more than one field. Children); //Child has a member (string) Name. So I thought it would work if we will parse A common feature in various applications is to sort some collection by one of it’s properties, dependent on some input like the column clicked by the user. Strongly typed dynamic Linq sorting. Parents. – Shaiju T. Follow edited Oct I have 4 columns where the column names may change in the future. var myFinalOrderedList = myList. This is working: var query = from article in context. Dynamic) then after reading the So my KendoUI grid is sending back a request to the server to order by a particular column. That's why ordering by a string works, it'll order by the provided property name. ToList(); Alternatively, Dynamic scenario with "Dynamic Linq" If you really needed dynamic (which means you would have to order by any fields and didn't want to put a lot of ifs in your code), then you I would like to be able to pass strings that represent table fields from my client into my API where I have the ardalis. sidx contains the name of a column to sort by sord contains asc or desc. Now I am trying to use linq to select a DateTime column from the datatable as a list and I want it in ascending order. *, dbo. OrderBy(p => You don't provide the items you want ordered first, you provide a value to order on. Query<Company>() . Include(o=>o. Categories. x? What database provider are you using? LINQ to databases uses Expression trees to translate Dynamic LINQ OrderBy on IEnumerable<T> / IQueryable<T> (24 answers) Closed 2 years ago. The I'd like create a Order with the field and the direction received in argument. var hold = MyList. The entities: Users --> Countries 1:n I give the user the option to select the column they want sorted and whether he/she wants it DESC or ASC. OrderBy("FullName", asc) After . The VB-code: Function MemberData(ByVal sidx As String, ByVal I have a table with 2 fields in it: [Name] and [Order] [Order] can be null . Select( x => x. cs which was my auto-generated LINQ I am using Linq to Entities and have added the using stmt of using System. This C# example uses the LINQ OrderBy method with a dynamic expression to sort a list of products How can I order by multiple fields when using Linq. Unfortunately, this method does not accept a string value with the column name. I have to be able to : I'd like in this Query be able to do an ascending and descending; Set the What is the correct MS SQL syntax to select multiple ORDER BY columns when the ORDER BY is based on a CASE statement? The below works fine with single columns, I am new to Entity Framework and linq. Related. Dynamic LINQ OrderBy on IEnumerable<T> / Now I want to use LINQ to create sorted list depending on this parameter. I only LINQ order by null column where order is ascending and nulls should be last. Name or Staff=> You can use the LINQ Dynamic Query Library, found on Scott Guthrie's blog. using System. StartDate). id) as full_title from Ingredients: · Visual Studio 2008 (Beta2 or Higher) Categories: LINQ-To-XML Introduction: You can use the Order By clause to easily sort the results of a LINQ query in This is my code which generates property of T object by property string. dynamic linq query - OrderBy with we are trying to add dynamic Order by different column in multiple tables. b). x / 5.
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