aspxgridview CustomButtonCallback 不支持弹出消息提示

     aspxgridveiw是devexpress的一个grid控件，使用起来还不错。但是今天遇到一个问题，就是不能再 CustomButtonCallback 事件中使用response.write，因为

CustomButtonCallback 事件是无刷新的，所以不支持，但是即使使用ScriptManager.RegisterClientScriptBlock(page, page.GetType(), "MyScript", myScript, true)也无

济于事，在网上查了很久，官方有个解决办法，原文如下：（原文地址）

 

Hi Troy;

To provide this functionality you should throw an exception in the CustomButtonCallback event handler and process this exception in the CallbackError

event handler. Here is the simple sample:

[csharp]  protected void ASPxGridView1_CustomButtonCallback(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewCustomButtonCallbackEventArgs e) 
    { 
        throw new Exception("Here I am!"); 
    } 

protected void ASPxGridView1_CustomButtonCallback(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewCustomButtonCallbackEventArgs e)
    {
        throw new Exception("Here I am!");
    }[javascript] view plaincopyprint?if (e.message == 'Here I am!') 
 { 
   clientErrorImage.SetVisible(true); 
 } 

if (e.message == 'Here I am!')
 {
   clientErrorImage.SetVisible(true);
 }If this answer is incomplete or I misunderstood your requirements, please let me know.

Thanks
Kate.

但是实际测试中发现了问题， throw 的时候后台直接抛出错误了，，这个方法也行不通，再找。。。

最终还是在官网上找到了解决方案，原文地址，我的代码如下：

[csharp]  protected void ASPxGridView1_CustomButtonCallback(object sender, ASPxGridViewCustomButtonCallbackEventArgs e) 
       { 
           ASPxGridView view = sender as ASPxGridView; 
           if (e.ButtonID == "btnAudit") 
           { 
               int id = 0; 
               int.TryParse(view.GetRowValues(e.VisibleIndex, "id").ToString(), out id); 
               if (true) 
                   { 
                       view.JSProperties["cpErrorMsg"] = "审核成功！"; 
                       view.DataBind(); 
                   } 
                   else 
                   { 
                       view.JSProperties["cpErrorMsg"] = "此单据已经审核！"; 
                   } 
           } 
       } 

 protected void ASPxGridView1_CustomButtonCallback(object sender, ASPxGridViewCustomButtonCallbackEventArgs e)
        {
            ASPxGridView view = sender as ASPxGridView;
            if (e.ButtonID == "btnAudit")
            {
                int id = 0;
                int.TryParse(view.GetRowValues(e.VisibleIndex, "id").ToString(), out id);
                if (true)
                    {
                        view.JSProperties["cpErrorMsg"] = "审核成功！";
                        view.DataBind();
                    }
                    else
                    {
                        view.JSProperties["cpErrorMsg"] = "此单据已经审核！";
                    }
            }
        }[javascript]  function EndCallBack(s, e) { 
       if (s.cpErrorMsg!="") { 
           alert(s.cpErrorMsg); 
       } 
   } 

 function EndCallBack(s, e) {
        if (s.cpErrorMsg!="") {
            alert(s.cpErrorMsg);
        }
    }