Compiler Error CS1560

Invalid filename specified for preprocessor directive. Filename is too long or not a valid filename

The file name that was specified with #line exceeded _MAX_PATH (256 characters) or the line on which #line was found exceeded 2000 characters.

Example

The following sample generates CS1560.

C#

// cs1560.cs
using System;
class MyClass
{
   public static void Main()
   {
      Console.WriteLine("Normal line #1.");
      #line 21 "MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890MyFile1234567890.txt"   // CS1560  
    }  
}