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Compiler Error CS1017

Visual Studio 2008

Catch clauses cannot follow the general catch clause of a try statement

A catch block that does not take any parameters must be the last in a series of catch blocks. For more information on exceptions, see Exception Handling Statements (C# Reference).

The following sample generates CS1017:

Copy 
// CS1017.cs
using System;

namespace x
{
    public class b : Exception
    {
    }

    public class a
    {
        public static void Main()
        {
            try
            {
            }

            catch   // CS1017, must be last catch
            {
            }

            catch(b)
            {
                throw;
            }
        }
    }
}
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