普通按钮的另一种提交方式(调用后台事件)

后台：

protected void ibtnRegedit_Click(object sender, ImageClickEventArgs e)

{

if (!Page.IsValid || !CheckVCode())

return;

.......

}

———————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————

    <script type="text/javascript">

var Ok = true;//false异步没回来不让提交，true异步没回来可以提交

function btnClick() {

            var val = $("#<%=txtUName.ClientID %>").val();

            if (val != "") {

                $.post("/ashx/CheckUser.ashx", { "loginid": val },

                    function () {

                        if (arguments[0] == "1") {

                            $("#iE").attr("src", "/Images/dui.ico").show();

                            Ok = true;

                            Page_ClientValidate(null);//调用全局的方法

                            if (Page_IsValid) {

                                __doPostBack(‘ctl00$ContentPlaceHolder1$ibtnRegedit‘, ‘‘);//由LinkButton产生参数1:Name非ID

                            }

                        }

                        else {

                            $("#iE").attr("src", "/Images/cha.ico").show();

                            Ok = false;

                        }

                    }

                    , "text");

            }

        };

    </script>

<asp:ImageButton ID="ibtnRegedit" runat="server" ImageUrl="~/Images/az-finish.gif" OnClick="ibtnRegedit_Click" /><asp:LinkButton ID="LinkButton1"  runat="server" Visible="False"></asp:LinkButton><input type="button" name="btnSub" onclick="btnClick();" id="" value="完  成" style="height: 20px; width: 50px; border-style:solid none ;" />

网页源码：

<script type="text/javascript">

//<![CDATA[

var theForm = document.forms[‘aspnetForm‘];

if (!theForm) {

    theForm = document.aspnetForm;

}

function __doPostBack(eventTarget, eventArgument) {

    if (!theForm.onsubmit || (theForm.onsubmit() != false)) {

        theForm.__EVENTTARGET.value = eventTarget;

        theForm.__EVENTARGUMENT.value = eventArgument;

        theForm.submit();

    }

}

//]]>

</script>

网页源码：

<input type="image" name="ctl00$ContentPlaceHolder1$ibtnRegedit" id="ctl00_ContentPlaceHolder1_ibtnRegedit" src="../../Images/az-finish.gif" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;ctl00$ContentPlaceHolder1$ibtnRegedit&quot;, &quot;&quot;, true, &quot;&quot;, &quot;&quot;, false, false))" style="border-width:0px;" /><input type="button" name="btnSub" onclick="btnClick();" id="" value="完  成" style="height: 20px; width: 50px; border-style:solid none ;" />