Button in a column - Creates a null reference exception in prerender

Hans — Mon, 09 Apr 2012 00:04:34 GMT

Hello,

I apologize for any inconvenience this problem may have caused you.

I have made a simple sample that maybe similar with your application scenario.
I added WebGrid in WebUserControl page and I bind with Nortwind.mdb (Shippers table).
Then I added WebGrid column’s code that you posted in my WebGrid.

But unfortunately, I can’t replicate your issue on my end. I attached my sample in order to make you more understand the sample.

Would you mind to telling me step-by-step How can I reproduce your issue.
Or if you don’t mind, could you attach your simple sample that indicates your issue? So I can analyze your issue.

Thank you.

Regards,
Hans

Button in a column - Creates a null reference exception in prerender

beyti77 — Fri, 06 Apr 2012 15:42:25 GMT

I have a button in a webgrid as a column and its code like below:

<ISWebGrid:WebGridColumn runat="server" Bound="False" ButtonAutoPostback="true" 
 Width="40px" EditType="NoEdit" ButtonText="qweqwe" DataMember="Id" DefaultValue="0"
 ButtonImage="/Style/Images/tick.png"  ColumnType="ButtonImage" NewRowEditType="NoEdit" 
 ButtonPostbackMode="OnTheFly" Name="Id"></ISWebGrid:WebGridColumn>

As you can see, I've tried all I can think of but none of them helped me.

Problem is, when I create a new item in the grid; the item is created successfully but after the creation; a pop-up screen appears and says a null reference exception is occured in the data binding to the webgrid.

When I remove the column, everything is ok.

And when I don't remove the column, eventhough it says a null ref exception is occured; after a refreshing the screen; I can see the item is created successfully and including the newly created item, every item is bind into the webgrid.

I would love if anybody could diect me into the right direction.

Thanks.

Info: The binding and the creation is by default and no override is included and linqdatasource is used for the data and given as a DataSourceId="dsSomething" in ascx page.

Intersoft Community - WebGrid Enterprise - Button in a column - Creates a null reference exception in prerender

Button in a column - Creates a null reference exception in prerender

Button in a column - Creates a null reference exception in prerender