Compiler Error CS0401

The new() constraint must be the last restrictive constraint specified

When using multiple constraints, list all other constraints before the new() constraint.

Example

The following sample generates CS0401.

// CS0401.cs  
// compile with: /target:library  
using System;  
 class C<T> where T : new(), IDisposable {}  // CS0401  
  
class D<T> where T : IDisposable  
{  
   static void F<U>() where U : new(), IDisposable{}   // CS0401  
}