从Ajax调用JavaScript的提高服务器端的按钮单击事件 [英] Raise Server side button click event from javascript in ajax call

问题描述

我有一个提交页面上的按钮。

I have a submit button on a page.

<asp:Button ID="btnSubmit" runat="server" Text="Save Test" OnClick="btnSubmit_Click"
                                        OnClientClick="return ValidateSaveTest(this);" />

在Javascript中，ValidateSaveTest函数被调用这验证所有字段。

On Javascript, ValidateSaveTest function is called which validates all the fields.

function ValidateSaveTest(Sender) {

            //do some validation, if fails return false from here. else move forward

        var parameters = {};
        parameters["parametersName"] = $("#" + hidTestId).val();

        var succeededAjaxFn = function(result) {
            if (result== true) {
                var isNewVersion = confirm("Confirmation message");
                if(isNewVersion)
                {
                        //Raise server side button click event. Dont call click side event anymore.
                        $("#" + "<%=btnSubmit.ClientID %>").click();
                }
                return false;
            }

        }
        var failedAjaxFn = function(result) { return false; }

            //jquery ajax call
        CallWebMethod("../Service.asmx", "IsTestUsed", parameters, succeededAjaxFn, failedAjaxFn);

        //async call, always return false hence no postback from here.
        //Need waiting unless ajax response is obtained.
        return false;
    }

我需要一旦收到Ajax响应从javascript提高服务器端的按钮单击事件。

I need to raise server side button click event from javascript once ajax response is received.

推荐答案

您可以从ClientScriptManager的的GetPostBackEventReference 方式：

You can get the required JavaScript code from the ClientScriptManager's GetPostBackEventReference method:

返回一个可以在客户端事件可用于使回发一个串
  到服务器。

Returns a string that can be used in a client event to cause postback to the server.

这是通常用于书写的onclick属性上，如＆LT控制; ASP：LinkBut​​ton的＆GT; ，但你可以在你的jQuery回调使用它，以及：

This is normally used for writing the onclick attributes on controls like the <asp:linkButton>, but you can use it in your jQuery callback as well:

var succeededAjaxFn = function(result) {
  //Raise server side button click event. Dont call click side event anymore.
  <%= Page.ClientScript.GetPostBackEventReference(btnSubmit, String.Empty) %>;
}

的＆LT;％=％GT; 块的上方会写了如下的JavaScript您：

The <%= %> block above will write out the following JavaScript for you:

__doPostBack('btnSubmit','')

这反过来将表格回发到服务器在ASP.NET认为该按钮被点击，所以服务器端 btnSubmit_Click 被触发这样的方式。

注意，使用这种方法，您可以在C＃中引用的实际控制人通过。你并不需要担心它的客户ID，或正确的名称和__ doPostback的的参数（） JavaScript函数。所有这一切都是由 ClientScriptManager 当你调用此方法。

Notice that using this method, you can pass in a C# reference to the actual control. You don't need to worry about its client ID, or the correct name and arguments of the __doPostback() JavaScript function. All that is taken care of by the ClientScriptManager when you call this method.

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