ASPXGridView PerformCallback（）执行完整的页面回发 [英] ASPxGridView PerformCallback() does full page postback

问题描述

我有一个复选框，当点击时，调用一个调用grid.PerformCallback（）的JavaScript程序，其中grid是我的ASPxGridView gridview的客户端实例名称。此gridview还具有数据绑定表的自定义回调方法。但是，当我单击我的复选框，而不是只在gridview执行回调，我的页面做一个完整的回发，其中发布表单。如何才能更新gridview？

  function toggle（）
 {
 productGrid.PerformCallback（）; 
} // end toggleExch（）
 
< dx：ASPxGridView ClientInstanceName =productGridWidth =100％ID =productGridrunat =server
 DataSourceID =ProductSQLEnableCallBacks =trueOnCustomCallback =productGrid_OnCustomCallback> 
< / dx：ASPxGridView> 
 
 protected void productGrid_OnCustomCallback（object sender，
 DevExpress.Web.ASPxGridView.ASPxGridViewCustomCallbackEventArgs e）
 {
 System.Diagnostics.Debug.WriteLine（in postback） ; 
 productGrid.DataBind（）; 
} // end productGrid_OnCustomCallback（）
  

所以基本上没有打印调试行页面进入完整的回发 - 我如何只回发和数据绑定网格？ （我需要在数据绑定之前做更多的服务器端处理或直接从jquery绑定是不成问题的）

解决方案

找到答案 - 应该使用iscallback而不是ispostback

I have a checkbox that when clicked, calls a javascript program that calls grid.PerformCallback(), where grid is the client instance name of my ASPxGridView gridview. This gridview also has a custom callback method which databinds the table. However when i click my checkbox, instead of only performing callback on the gridview, my page does a full postback, which posts the form. How do i make it so that it only updates the gridview?

 function toggle()
    {                         
        productGrid.PerformCallback();
    }//end toggleExch()

<dx:ASPxGridView ClientInstanceName="productGrid" Width="100%" ID="productGrid" runat="server"
                DataSourceID="ProductSQL" EnableCallBacks="true" OnCustomCallback="productGrid_OnCustomCallback">            
        </dx:ASPxGridView>

protected void productGrid_OnCustomCallback(object sender,
                        DevExpress.Web.ASPxGridView.ASPxGridViewCustomCallbackEventArgs e)
{
    System.Diagnostics.Debug.WriteLine("in postback");
    productGrid.DataBind();
}//end productGrid_OnCustomCallback()

so basically the debug line is not printed and the page goes into full postback - how do i only postback and databind the grid? (i need to do more server side processing before databinding or directly binding from jquery is out of the question)

解决方案

found the answer - should use iscallback instead of ispostback

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