/// <summary>
/// 出错时弹出提示对话框
/// </summary>
/// <param name="str_Prompt">提示信息</param>
/// <param name="lbl_Error">Label控件id值</param>
public void JsIsNull(string str_Prompt,Label lbl_Error)
{
lbl_Error.Text="<script language=/"javascript/">alert('"+str_Prompt+"');</"+"script>";
}