c# - 防止来自 __doPostBack 的完整回发

Question

我有一个包含以下内容的内容页面...

1. UpdatePanel1 - containing Error Display Divs
   contains update triggers for both buttons
2. UpdatePanel2 - containing process 1 with an asp:button
   
3. updatePanel3 - containing process 2 with an asp:button
   
4. JavaScript that presents the user with a Popup confirm Jquery Messagebox based on the process they are executing.
   

UpdatePanel 2 或 3 根据用户从菜单选项中的选择变为可见。

当我单击一个按钮时，消息框会弹出，并且会使用来自消息框响应的 __doPostback 正确处理页面，并且该页面会执行完整的回发。

我宁愿页面执行部分回发和它所拥有的内容，并在出现错误时显示错误显示 Divs。如有任何帮助，我们将不胜感激。

按钮没什么特别的

<asp:Button ID="ResetSomething" runat="server" Text="ResetSomething" Width="275px" />

这是内容页面脚本 block

    <script type="text/javascript" language="javascript">
<!--
    function pageLoad() {
        setform();

    };

    function setform() {
        var reset1_button = $('input[id*=ResetSomething]');
        var reset2_button = $('input[id*=ResetSomethingElse]');

        reset1_button.click(function() {
            var element = $(this);
            $.prompt('Message1', { show: 'slideDown', buttons: { Ok: true, Cancel: false },
                submit: function(v, m, f) { submit_reset_callback(v, m, element); }
            });
            return (false);
        });

        var submit_reset_callback = function(result, messages, element) {
            if (result) { __doPostBack("ResetSomething");}
            return (false);
        };

        reset2_button.click(function() {
            var element = $(this);
            $.prompt('Message2', { show: 'slideDown', buttons: { Ok: true, Cancel: false },
                submit: function(v, m, f) { submit_update_callback(v, m, element); }
            });
            return (false);
        });

        var submit_update_callback = function(result, messages, element) {
            if (result) { __doPostBack("ResetSomethingElse"); }
            return (false);
        };
    };     
-->
</script>

这是 OnInit 背后的代码:

    protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
        this.PreLoad += (sender, args) =>
                            {

                                this.ClientScript.GetPostBackEventReference(this, "arg");

                                if (!IsPostBack) { return; }

                                string __targetaction = this.Request["__EVENTTARGET"];
                                string __args = this.Request["__EVENTARGUMENT"];

                                if (string.IsNullOrEmpty(__args)) return;

                                if (__targetaction == "ResetSomething")
                                {
                                    ResetSomething();
                                }
                                if (__targetaction == "ResetSomethingElse")
                                {
                                    ResetSomethingElse();
                                }
                                this.upnlNotifications.Update();
                            };
    }

Answer 1

定义下面的函数并将您的 __doPostBack 调用替换为 doPostBackAsync(controlId, null)。

function doPostBackAsync(eventName, eventArgs) {
    var prm = Sys.WebForms.PageRequestManager.getInstance();

    if (!Array.contains(prm._asyncPostBackControlIDs, eventName)) {
        prm._asyncPostBackControlIDs.push(eventName);
    }

    if (!Array.contains(prm._asyncPostBackControlClientIDs, eventName)) {
        prm._asyncPostBackControlClientIDs.push(eventName);
    }

    __doPostBack(eventName, eventArgs);
}