Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All
Expand Minimize

Compiler Error CS0178

Invalid rank specifier: expected ',' or ']'

An array initialization was ill-formed. For example, when specifying the array dimensions, you can specify the following:

  • A number in brackets

  • Empty brackets

  • A comma enclosed in brackets

For more information, see Arrays (C# Programming Guide) and the C# specification (C# Language Specification) section on array initializers.

The following sample generates CS0178.

// CS0178.cs
class MyClass
   public static void Main()
      int a = new int[5][,][][5;   // CS0178
      int[,] b = new int[3,2];   // OK

      int[][] c = new int[10][];
      c[0] = new int[5][5];   // CS0178
      c[0] = new int[2];   // OK
      c[1] = new int[2]{1,2};   // OK

Community Additions

© 2015 Microsoft