LINQ to Entities does not recognize the method 'Int32 IndexOf(System.String, System.StringComparison)' method

Question

I have executed a linq query by using Entityframework like below

GroupMaster getGroup = null;
getGroup = DataContext.Groups.FirstOrDefault(item => keyword.Ind         


        

Answer 1

The IndexOf method Of string class will not recognized by Entity Framework, Please replace this function with SQLfunction or Canonical functions

You can also take help from here or maybe here

You can use below code sample:

DataContext.Groups.FirstOrDefault(item => 
    System.Data.Objects.SqlClient.SqlFunctions.CharIndex(item.Keywords, keyword).Value >=0 && item.IsEnabled)