Compiler Error CS1933

Expression cannot contain query expressions

Some variables cannot be initialized with a query expression. Constants cannot be initialized with query expressions because constants may only be initialized with some combination of literals, named constants, and mathematical operators.

To correct this error

1. Remove the modifier from the query variable.

Example

The following example generates CS1933:

// cs1933.cs
using System.Linq;
using System.Collections;

class Program
{
    const IEnumerable e = from x in new[] { 1, 2, 3 } select x; // CS1933
    static int Main()
    {
        return 1;
    }
}

Note

This compiler error is no longer used in Roslyn. The previous example generates CS0133 when compiled with Roslyn.

See also

• LINQ in C#