convert exception to another exception in catch c# code example

Example 1: c# multiple catch exceptions

// if C# v6+, you can use exception filters
catch (Exception ex) when (ex is FormatException || ex is OverflowException)
{
  // do something
}

Example 2: c# catch two exceptions in one block

catch (Exception ex)            
{                
    if (ex is FormatException || ex is OverflowException)
    {
        WebId = Guid.Empty;
        return;
    }

    throw;
}