private void AddModelMasterForm_Load(object sender, EventArgs e)
 {
     if (vo.DrawId > 0)
     {
         DrawCode_txt.Text = vo.DrawCode;
         DrawName_txt.Text = vo.DrawName;
     }
     DrawCode_txt.Select();
 }
        private void Clear_btn_Click(object sender, EventArgs e)
        {
            DrawCode_txt.Text = string.Empty;

            DrawName_txt.Text = string.Empty;

            Draw_dgv.DataSource = null;

            DrawCode_txt.Select();
        }