给删除按钮添加一个确认消息框(从服务端)

private void isCheckDelete()
{
System.Text.StringBuilder scriptString = new System.Text.StringBuilder();
scriptString.Append("<script language=javascript>");
scriptString.Append("function DelConfirm() {");
scriptString.Append("return confirm('你确定要删除吗？'); }");
scriptString.Append("</script>");

string js = scriptString.ToString();
//判断"DelConfirm"脚本块是否已经添加
if (!IsClientScriptBlockRegistered("DelConfirm"))
{
//未添加的情况下添加该脚本块
RegisterClientScriptBlock("DelConfirm", js);
}

lbtnDelete.Attributes.Add("onclick", "return DelConfirm()");
}