[英]ASP.NET PostBack after AJAX response
I'm working with a legacy web application - there's a form with some text inputs and some file inputs, and the form is saved on a PostBack.. 我正在使用旧版Web应用程序-有一个带有一些文本输入和一些文件输入的表单,并且该表单保存在PostBack上。
HTML: HTML:
<input id="txt1" name="txt1" type="text" />
<input id="hfd1" name="hfd1" type="hidden" value="-1" />
<input id="file1" name="file1" runat="server" type="file" />
<asp:Button ID="btnSave" runat="server" OnClientClick="return PrepareSave()" OnClick="btnSave_Click" Text="Save" />
JS: JS:
function PrepareSave() {
$('#hfd1').val($('#txt1').val());
return true;
}
I need to send an AJAX request inside PrepareSave()
to validate a field on the server, and depending on the response, carry on with the PostBack or don't. 我需要在PrepareSave()
内发送一个AJAX请求以验证服务器上的字段,并根据响应选择是否使用PostBack进行操作。 I've tried this: 我已经试过了:
function PrepareSave() {
Project1.Web.Services.AJAXService1.CheckSomething(someString, function (result) {
if (result == true) {
// continue PostBack
$('#hfd1').val($('#txt1').val());
return true;
}
else {
// abort PostBack
alert('invalid');
return false;
}
});
}
But it's failing - it doesn't post back regardless of the AJAX response. 但这是失败的-无论AJAX响应如何,它都不会回发。 I've tried implementing the accepted answer here but it's having the same problems. 我已经尝试过在这里实现可接受的答案,但是它也有同样的问题。 What can I do to make it work? 我该怎么做才能使其正常工作?
I've tried simplifying that accepted answer above, to test it: 我尝试简化上面接受的答案,以对其进行测试:
<asp:Button ID="btnSave" runat="server" ClientIDMode="Static" OnClientClick="PrepareSave(); return false;" Text="Save" />
<asp:Button ID="btnSaveHidden" runat="server" ClientIDMode="Static" OnClick="btnSave_Click" Visible="False" />
function PrepareSave() {
$('#btnSaveHidden').click(); // does nothing. also tried .trigger('click')
}
In code behind you can do: 在后面的代码中,您可以执行以下操作:
ClientScript.RegisterStartupScript(GetType(), "ReloadParent", "window.parent.location.href = window.parent.location.href;", true);
or in js, use the script part by itself: 或在js中,单独使用脚本部分:
window.parent.location.href = window.parent.location.href;
hth. hth。
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