Compiler Error CS1015

An object, string, or class type expected

An attempt was made to pass a predefined data type into a catch block. Only data types that derive from System.Exception can be passed into a catch block. For more information on exceptions, see Exception Handling Statements (C# Reference).

Example

The following sample generates CS1015:

// CS1015.cs
class Sample
{
    static void Main()
    {
        try 
        {
        }
        catch(int)   // CS1015, int is not derived from System.Exception
        {
        }
    }
}