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