在Text Box中按Enter觸發Send事件

1private void Page_Load(object sender, System.EventArgs e)
2{
3 Response.Write(DateTime.Now.ToString() + "
");
4
5 if(!IsPostBack){
6 txt1.Attributes.Add("onkeydown","if(event.keyCode==13){" + this.GetPostBackEventReference(btnSubmit,"") + "}");
7 }
8}
9private void btnSubmit_Click(object sender, System.EventArgs e)
10{
11 Response.Write("button 被按了");

12}