// Set a particular error number in the program's error object.
private static void SetErrorNumber(int number)
{
ErrObject error = Information.Err();
error.Clear();
error.Number = number;
}
// Throw an exception by number.
public static void ThrowException(int hr)
{
Exception exception =
ErrObject.CreateExceptionFromNumber(hr, null);
SetErrorNumber(hr);
throw exception;
}
// Create a new project error.
public static Exception CreateProjectError(int hr)
{
ClearProjectError();
hr = ErrObject.HResultToNumber(hr);
Exception e = ErrObject.CreateExceptionFromNumber(hr, null);
Information.Err().Number = hr;
return(e);
}
/// <summary>Performs the work for the <see langword="Raise" /> method of the <see langword="Err" /> object. A helper method.</summary>
/// <param name="hr">An integer value that identifies the nature of the error. Visual Basic errors are in the range 0–65535; the range 0–512 is reserved for system errors; the range 513–65535 is available for user-defined errors.</param>
/// <returns>An <see cref="T:System.Exception" /> object.</returns>
public static Exception CreateProjectError(int hr)
{
ErrObject errObject = Information.Err();
errObject.Clear();
int num = errObject.MapErrorNumber(hr);
return(errObject.CreateException(hr, Utils.GetResourceString((vbErrors)num)));
}
static void Main(string[] args)
{
ErrObject err = Information.Err();
// Definitions
const int PART1_LENGTH = 5;
string sPart1 = "Some value";
int vbObjectError = 123;
double d;
if (sPart1.Length != PART1_LENGTH)
{
err.Raise(vbObjectError, null, "Part 1 must be " + PART1_LENGTH);
}
else if (double.TryParse(sPart1, out d))
{
err.Raise(vbObjectError, null, "Part 1 must be numeric");
}
}
// Throw a particular exception, after setting the error number.
private static void ThrowExceptionInternal(Exception exception)
{
SetErrorNumber(ErrObject.GetNumberForException(exception));
throw exception;
}
