Compiler Error CS0225

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The params parameter must be a single dimensional array

When using the params keyword, you must specify a single-dimensional array of the data type. For more information, see Methods (C# Programming Guide).

Example

The following sample generates CS0225:

// CS0225.cs
public class MyClass
{
    public static void TestParams(params int a)   // CS0225
    // try the following line instead
    // public static void TestParams(params int[] a)
    {
    }

    public static void Main()
    {
        TestParams(1);
    }
}