private void buttonCommand_Click(object sender, EventArgs e)
{
var parameter = (ExtensionTypeParameter)((Command)sender).Tag;
var ofd = new OpenFileDialog();
if (ofd.ShowDialog(_tableLayout) != DialogResult.Ok)
{
return;
}
// Update value
_tableLayout.FindChild <TextBox>(parameter.Name).Text = ofd.FileName;
parameter.Value = ofd.FileName;
OnValueChanged(_tableLayout.FindChild <TextBox>(parameter.Name));
}