public void PasteTextToTextBox(TextBox tb)
{
var folderBD = new FolderBrowserDialog();
if (folderBD.ShowDialog() == DialogResult.OK)
{
tb.Text = (System.IO.Path.GetFullPath(folderBD.SelectedPath).Substring(System.IO.Path.GetFullPath(folderBD.SelectedPath).Length - 1) != @"\" ? tb.Text = System.IO.Path.GetFullPath(folderBD.SelectedPath) + @"\" : tb.Text = System.IO.Path.GetFullPath(folderBD.SelectedPath));
}
}