如何在排序和保存转发器行后启用或禁用按钮？

Question

 protected void saveneworderbtn_Click(object sender, EventArgs e)
 {
     //Response.Write(Hidden1.Value);
     string trimmer = inpHide.Value;

     trimmer = trimmer.TrimEnd('|');

     string updateQuery = "update dnn_Table_1 set SortId = {0} where ImageId={1}";
     StringBuilder sb = new StringBuilder();

     string[] originalIdAndSeqNumberArray = trimmer.Split('|');

     foreach (var originalIdAndSeqNumberCombined in originalIdAndSeqNumberArray)
     {
         var tempArray = originalIdAndSeqNumberCombined.Split(':');

         int originalId = Convert.ToInt32(tempArray[0]);
         int sequenceNumber = Convert.ToInt32(tempArray[1]);

         sb.Append(String.Format(updateQuery, sequenceNumber, originalId));
         sb.Append(System.Environment.NewLine);
     }
}

如何在排序和保存转发器行后启用或禁用按钮？我希望在排序和保存后禁用此按钮。排序完成后，我希望启用此按钮。怎么做？