WebSep 5, 2016 · 1. You can use a declaration like this. Func whereClause = test => filter.Condition; I assume that filter.Condition returns a boolean value. I have tested this simplification: Func whereClause = test => true; Update: filter.Condition returns a string with statements like property = 'value'. WebJun 11, 2024 · A bit of a grave dig, but recently hit performance issues with DataTable.AsEnumerable()... in old code that was resolved by converting to DataTable.AsEnumerable().ToList().... +1 for Fabio's answer, definitely a cleaner more efficient approach, but if you don't want to mess too much with legacy code and profiling …
Understanding .AsEnumerable() in LINQ to SQL - Stack Overflow
WebSep 15, 2024 · LINQ simplifies this situation by offering a consistent model for working with data across various kinds of data sources and formats. In a LINQ query, you are always working with objects. You use the same basic coding patterns to query and transform data in XML documents, SQL databases, ADO.NET Datasets, .NET collections, and any other … WebMar 29, 2012 · I have a datatable with two columns, Column 1 = "EmpID" Column 2 = "EmpName" I want to query the datatable, against the column EmpID and Empname. … trust account management real estate
Write LINQ queries in C# Microsoft Learn
WebOct 14, 2024 · Where is a LINQ functionality to filter data in a query with given criteria. Each of below examples is presented in C# with both Lambda and Query expression. 1. … WebLinq存儲過程,通過System.Data.CommandType.StoredProcedure發送參數 [英]Linq Stored procedures, send parameter via System.Data.CommandType.StoredProcedure WebMay 22, 2012 · 0. you could set the database as IEnumberable and use linq to check if the values exist. check out this link. LINQ Query on Datatable to check if record exists. the example given is. var dataRowQuery= myDataTable.AsEnumerable ().Where (row => ... you could supplement where with any. philipp melanchthon und martin luther