Linq search multiple columns. Contains(search) || user.

Linq search multiple columns Using contains to match two fields. Related. Name select row; AND You can select multiple fields using linq Select as shown above in various examples this will return as an Anonymous Type. – Jan 15, 2021 · Is there the possibility by using EF. ScreenName. Linq -search in two columns. Expressions, but it becomes quite complex if you don't establish constraints from the beginning, like for example, do you also want to perform the search on numeric and date types? if so, what are the rules to tokenize the value of searchText as a valid number/date to be search in the underlying db Apr 26, 2018 · Assume entity, Patient exists in the context, which has been generated using the database-first approach, so I can not modify the database. where TheIDs. This question is opinion My test case scenario is about a search textbox and a grid with the search results. linq search multiple columns. This could be either their name, post code or id. static void Main() . Generic; using System. Here's an example demonstrating how to select multiple columns from a collection of objects: using System. Its a little ugly, but its fast enough. net using linq. Item1, f. public int Count { get; set; } Then do: Jan 29, 2024 · How can you select multiple columns with LINQ? When utilizing LINQ, you can select multiple columns from a data source by utilizing the select clause. ' My 'search' keyword could be something like: "peter" or "a little description". I want to search for a string in multiple columns using ling-to-sql and I'm wondering how to write the where clause. I can also perform 1 search by using more than 1 search criteria. I want to do a search on multiple columns as if I were doing a database SELECT. Linq; class Program . SomeTable. . I have a medication table that I'm looking for certain drug names, but I need to search for multiple names. FirstName. Mar 10, 2019 · @3xGuy I have done something similar in the past with the help of the classes in System. LINQ - Querying multiple properties for potential match. public class Patient { public string Id { get; set; May 14, 2016 · How do I implement such functionality in LINQ-to-Entities? In other words, I need a LINQ where I query over multiple optional fields, map each item in my database to a total score of columns have matched (where columns have a fixed, preset weight), then order by that score. Any(m. Creating a LINQ select from multiple tables. string[] names = new string[2]; names[0] = "apixaban"; names[1] = "desirudin"; var meds = (from m in Medications where names. This is what I have so far: Jan 16, 2015 · Search multiple database columns using one search box. These examples help you learn about LINQ methods and how you can use them with your collections, or other data sources. Linq. – Select multiple column in linq. LINQ: Query two tables in one query-1. Functions. Contains) select m); Sep 4, 2012 · I thought of a less than ideal solution, now I search with Linq for the first search term past to the method, and if there is more than 1 search term, I use the initial results from the db and filter results that don't match the second, third, etc terms. Then create a nonclustered index on the value column. Out The following LINQ statements: var movies = from row in _db. For example, the search feature in this application allows the user to find all records that meet criteria defined on multiple columns: Jan 31, 2024 · In this article, we are going to explore how to select multiple records based on a list of IDs using LINQ. Movies orderby row. May 14, 2014 · LINQ search on multiple columns and determine on what column it matched on. ToList(); Aug 29, 2007 · A common requirement in forms-over-data applications is that users be able to search by any combination of fields to construct a dynamic query at run time. For example, if the first three linq search multiple columns. 3. We will demonstrate two ways to do that, and we will investigate the cases in which each might be a better choice. Create a table in your database that has 4 columns: A primary key, a varchar value, a column ID, and a reference (possibly a Foriegn Key) to the primary key in your pr table. Use the following line on your DataContext to log the SQL activity on the DataContext to the console - then you can see exactly what your LINQ statements are requesting from the database: _db. This clause allows you to specify which columns you want to retrieve from the data source. C# - Searching across more than one column. I have a table of products. By using the following currently, i search only on the first column. If you want to avoid this anonymous type here is the simple trick. Feb 10, 2016 · For various reasons I need to be able to allow the user to select an item from a database based on their choice of columns and values. Apr 22, 2011 · How do I search multiple columns using LINQ to SQL when any one of the column could be null? IEnumerable<User> users = from user in databaseUsers where user. Select(f => new List<int>() { f. Collections. (Otherwise, the hashcode used for comparison will not get properly calculated) In C#, there is no 'Key' keyword - instead all properties in anonymous types are automatically Key fields. How do make it? Jul 24, 2018 · I am implementing search feature on my blog site ,each blog may contains title,slug,post content etc ,which should work like this , Goal. Contains(search) || user. Hot Network Questions NIntegrate cannot give high precision result for a well-behaved For doing a distinct on multiple fields in VB. Search with multiple parameters in SQL Server. ID) && where "TheSearchTerm is in one of the columns" select t. Contains(t. Jul 23, 2024 · To select multiple columns using lambda expressions, you can utilize the Select method provided by LINQ. Net, one has to use the 'Key' keywords for every property in the anonymous type. 2. var items = listObject. Contains) || names. When user type a keyword it should search for that string contains in any of 3 column in Sql Server in efficient way. ID). 54. 1. adding a search in a MVC. Jan 23, 2012 · I was wondering what the best approach would be to search a database via multiple columns by using only 1 search box. Log = Console. I have been stuck on this wayyy to long. BrandName. I am struggling with crating a way to do this. foreach (GridColumn s in columns) { dat Jun 9, 2015 · I am using a multi-column listView control in Visual Studio 2013 and coding with C#. Item2 }). GenericName. Distinct(); I think this solves your problem Jun 20, 2017 · I am trying to select multiple columns by using LinqToSql, but I am having a hard time with it. like product id is "product1", "product2","product3" n number of values we have Jun 4, 2021 · I'm searching on multiple columns I want to determine which column matched my search text on the results. Scenario below: I want to be able to search Customers by inputting their details into a search box. This is what I have: I'm passing a list of IDs to search as well as a search term: var TheOutput = (from t in TheDC. Still open to suggestions. Linq to EF Dynamic Search with multiple properties. 5. Simplest way is to create a result class: public string Id { get; set; } // You could probably use Guid instead. 0. For example, I have a table like this: var names = new[] { new { FirstName = &quot;Jame Oct 29, 2010 · for linq search queries multiple optional parameters Can Use This Code: linq search multiple columns. CategoryID, row. I have only been able to return individual items/columns. // Sample data var students = new List<Student> Apr 25, 2024 · You can use LINQ to query any collection type. Apr 17, 2018 · LINQ search by multiple columns [closed] Ask Question Asked 6 years, 7 months ago. with the following data: 'Peter' | 'Mulder' | 'This is a little description. LastName. SelectMany(item => item). Viewed 1k times 2 Closed. FreeText to search on multiple columns? The function accepts as input parameters: the column in which to perform the search and the string to search for, but in the documentation I cannot find anything that makes me understand if I can execute it in this context FREETEXT ((col1, col2, col3), 'search') Aug 17, 2017 · Use SQL Server, it will be much better at searching than LINQ. Here is where I currently am with it. Mar 22, 2016 · How to select record based on multiple values search in one column using linq query. a single location that is structured and easy to search Feb 6, 2022 · Search multiple column using multiple control in asp. Contains(search) select user; Aug 10, 2014 · I'm trying to create a linq statment that return an arrary. Modified 6 years, 7 months ago. I have a table with the following columns: 'firstname' | 'lastname' | 'description'. Other LINQ methods find elements in a collection, compute values from the elements in a collection, or modify the collection or its elements. For instance, if I have a table: Name | Specialty | R I am trying to make a suitable linq query to accomodate my search functionality. I want to be able to select name, id, and price, for each product where the status == 1. hbvh zzxa ksrzfgh alvu iuihv hvoyf buv csxz ksdl rnlffa