Best way to catch sql unique constraint violations in c# during inserts

Question

I have a loop in c# that inserts into a table. pretty basic stuff. Is there something insdie the exception object that\'s thrown when a unique constraint is violated that i

Answer 1

In addition of Bill Sambrone's answer,

Two error codes are used to check unique key violation

1. 2601 - Violation in unique index
2. 2627 - Violation in unique constraint (although it is implemented using unique index)

Either you can use one or both according to your needs:

try
{

}
catch(SqlException ex)
{
   if(ex.Number == 2601) 
   {
      // Violation in unique index
   }
   else if(ex.Number == 2627)
   {
      // Violation in unique constraint
   }
}

OR

try
{

}
catch(SqlException ex)
{
   if(ex.Number == 2601 || ex.Number == 2627)
   {
      // Violation in one on both...
   }
}