Question

如何在devexpress中的asp .net中多次调用客户端回调函数。

这是pageload事件：

protected void Page_Load(object sender, EventArgs e)
{
    if (Page.IsCallback)
        return;
    //Creating a reference of Client side Method, that is called after callback on server
    String cbReference = Page.ClientScript.GetCallbackEventReference(this, "arg","ReceiveServerData", "");

    //Putting the reference in the method that will initiate Callback
    String callbackScript = "function CallServer(arg, context) {" +cbReference + "; }";

    //Registering the method
    Page.ClientScript.RegisterClientScriptBlock(this.GetType(),"CallServer", callbackScript, true);
}

public void RaiseCallbackEvent(String eventArgument)
{
    DateTime dob = Convert.ToDateTime(eventArgument);
    DateTime Today = DateTime.Now;
    TimeSpan ts = Today - dob;
    DateTime Age = DateTime.MinValue + ts;

    int Years = Age.Year - 1;
    int Months = Age.Month - 1;
    int Days = Age.Day - 1;
    result = Years.ToString();
}

public string GetCallbackResult()
{
    return result;
}

这是javascript函数：

<script language="javascript" type="text/javascript">
    function InitiateCallBack(value) {
        CallServer(value, '');
    }

    // Called after the server side processing is done
    function ReceiveServerData(arg, context) {
        $("#MainContent_ASPxtxtAge_I").val(arg);
    }
</script>

此处只进行单次回拨，但如何从多个按钮多次调用？

我正在使用devexpress和asp .net c＃。有关这个问题的任何建议吗？

Answer 1

这看起来像一个简单的函数，而不是回调本身，你可以通过这种方式从任何Button调用该函数

<dx:ASPxButton ID="btnOther" runat="server" Text="Function" AutoPostBack="false" 
                                      ClientSideEvents-Click="function(s, e) { InitiateCallBack(value); }">
                                  </dx:ASPxButton>

在devexpress中的asp .net中调用多次客户端回调函数

1 个答案: