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

#error

#error lets you generate an error from a specific location in your code.

#error text

where:

text
The text of the error that should appear in the compiler's output.

Remarks

A common use of #error is in a conditional directive. It is also possible to generate a user-defined warning with #warning.

Example

// preprocessor_error.cs
// CS1029 expected
#define DEBUG
public class MyClass 
{
   public static void Main() 
   {
      #if DEBUG
      #error DEBUG is defined
      #endif
   }
}

See Also

C# Preprocessor Directives

Show:
© 2015 Microsoft