July 28, 2014
Begins a catch block.
Assembly: mscorlib (in mscorlib.dll)
The catch block is within a filtered exception.
exceptionType is null, and the exception filter block has not returned a value that indicates that finally blocks should be run until this catch block is located.
The Microsoft intermediate language (MSIL) being generated is not currently in an exception block.
Emits a branch instruction to the end of the current exception block.
If the filter exception block returns the constant exception_execute_handler, the argument to the BeginCatchBlock is not checked. For more information, see the Common Language Infrastructure documentation. The documentation is available online; see ECMA C# and Common Language Infrastructure Standards on MSDN and Standard ECMA-335 - Common Language Infrastructure (CLI) on the Ecma International Web site.
The following example demonstrates the use of the BeginCatchBlock method. This code is part of a larger example provided for the BeginExceptionBlock method.
// Use the Leave instruction to exit a try block. You cannot branch from try // blocks. adderIL.Emit(OpCodes.Leave, exTryCatchFinally); // Start the catch block for OverflowException. // adderIL.BeginCatchBlock(overflowType); // On entry to the catch block, the thrown exception is on the stack. Store it // in a local variable. adderIL.Emit(OpCodes.Stloc_S, thrownException);