/// <summary>
/// Gets the full path to the designated folder on the source media or server image.
/// </summary>
/// <exception cref="ArgumentException">the folder was not found in the Directory table</exception>
/// <exception cref="InvalidHandleException">the Session handle is invalid</exception>
/// <remarks><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msigetsourcepath.asp">MsiGetSourcePath</a>
/// </p></remarks>
public string GetSourcePath(string directory)
{
if (string.IsNullOrWhiteSpace(directory))
{
throw new ArgumentNullException("directory");
}
this.ValidateSessionAccess();
StringBuilder buf = new StringBuilder();
uint bufSize = 0;
uint ret = RemotableNativeMethods.MsiGetSourcePath((int)this.Handle, directory, buf, ref bufSize);
if (ret == (uint)NativeMethods.Error.MORE_DATA)
{
buf.Capacity = (int)++bufSize;
ret = ret = RemotableNativeMethods.MsiGetSourcePath((int)this.Handle, directory, buf, ref bufSize);
}
if (ret != 0)
{
if (ret == (uint)NativeMethods.Error.DIRECTORY)
{
throw InstallerException.ExceptionFromReturnCode(ret, directory);
}
else
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
}
return(buf.ToString());
}