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:
复制代码 代码如下:
protected void ASPxGridView1_CustomButtonCallback(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewCustomButtonCallbackEventArgs e)
{
throw new Exception("Here I am!");
}
复制代码 代码如下:
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：
复制代码 代码如下:
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！";
}
}
}
复制代码 代码如下:
function EndCallBack(s, e) {
if (s.cpErrorMsg!="") {
alert(s.cpErrorMsg);
}
}
这里要注意：JSProperties的参数必须以小写"cp"开头。
测试通过，呵呵
