private void OpenFileExecute()
{
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.FileName = "";
dlg.DefaultExt = ".lib";
dlg.Filter = "Library Archives (.lib)|*.lib";
Nullable<bool> result = dlg.ShowDialog();
if (result == true)
{
LoadFile(dlg.FileName);
}
}