Mar 29, 2012, 12:43 AM
Help for treepanel item direct click event!NullReferenceException!
I try to update my 1.3 code to 2.0,but when i try to use treepanel like this:
[NullReferenceException: 未将对象引用设置到对象的实例。]
Ext.Net.Observable.FireAsyncEvent(String eventName, ParameterCollection extraParams) +181
Ext.Net.ResourceManager.RaisePostBackEvent(String eventArgument) +1937
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +176
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563
why ?how to modify?
need help!!!
<ext:TreePanel ID="TreePanel1" runat="server" AutoScroll="true" TitleCollapse="true"
Width="500" HideParent="False" Region="West">
<Root>
<ext:Node NodeID="aa" Text="roletree" />
</Root>
<DirectEvents>
<ItemClick OnEvent="NodeClick" />
</DirectEvents>
</ext:TreePanel>
public void NodeClick(object sender, DirectEventArgs e)
{
string tmpID = "";
...
}
when the click triggered,I got a error like this:[NullReferenceException: 未将对象引用设置到对象的实例。]
Ext.Net.Observable.FireAsyncEvent(String eventName, ParameterCollection extraParams) +181
Ext.Net.ResourceManager.RaisePostBackEvent(String eventArgument) +1937
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +176
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563
why ?how to modify?
need help!!!