public void MsiThrowOnFailure(IntPtr hDatabase, uint retVal, string message)
{
if (retVal != CwMsiWin32.ERROR_SUCCESS)
{
IntPtr hView = IntPtr.Zero;
IntPtr hRecord = IntPtr.Zero;
hRecord = CwMsiWin32.MsiGetLastErrorRecord(); //try to get a handle to the error record
string retString = message + "( SYSTEM ERROR CODE " + retVal + ").";
if (hRecord != IntPtr.Zero)
{
uint errCode = CwMsiWin32.MsiRecordGetInteger(hRecord, 1); //MSDN says field 1 is the err code
retString += "\n\nError Table data (code=" + errCode + ")";
IntPtr lpBuffer = Marshal.AllocHGlobal(4096);
uint pcchResultBuf = 4096;
//format the record string
CwMsiWin32.MsiFormatRecord(IntPtr.Zero, hRecord, lpBuffer, ref pcchResultBuf);
//add it to our main return string
retString += "'" + Marshal.PtrToStringAnsi(lpBuffer) + "'";
//cleanup duty
Marshal.FreeHGlobal(lpBuffer);
CwMsiWin32.MsiCloseHandle(hRecord); //discard the error record handle now that we have the code
hRecord = IntPtr.Zero;
}
throw new Exception(retString);
}
}