Can you catch a native exception in C# code?
You can use Win32Exception and use its NativeErrorCode property to handle it appropriately.
// http://support.microsoft.com/kb/186550
const int ERROR_FILE_NOT_FOUND = 2;
const int ERROR_ACCESS_DENIED = 5;
const int ERROR_NO_APP_ASSOCIATED = 1155;
void OpenFile(string filePath)
{
Process process = new Process();
try
{
// Calls native application registered for the file type
// This may throw native exception
process.StartInfo.FileName = filePath;
process.StartInfo.Verb = "Open";
process.StartInfo.CreateNoWindow = true;
process.Start();
}
catch (Win32Exception e)
{
if (e.NativeErrorCode == ERROR_FILE_NOT_FOUND ||
e.NativeErrorCode == ERROR_ACCESS_DENIED ||
e.NativeErrorCode == ERROR_NO_APP_ASSOCIATED)
{
MessageBox.Show(this, e.Message, "Error",
MessageBoxButtons.OK,
MessageBoxIcon.Exclamation);
}
}
}
Catch without () will catch non-CLS compliant exceptions including native exceptions.
try
{
}
catch
{
}
See the following FxCop rule for more info http://msdn.microsoft.com/en-gb/bb264489.aspx