Why it is null?

  • Thread starter Thread starter etam
  • Start date Start date
E

etam

Hi, does anyone know why o == null?!

protected void ShowProjectsGridView_SelectedIndexChanged(object
sender, EventArgs e) {
Object o = ProjectsGridView.SelectedRow.DataItem;
//...
}

Thanks,
Etam.
 
Hi, does anyone know why o == null?!

protected void ShowProjectsGridView_SelectedIndexChanged(object
sender, EventArgs e) {
Object o = ProjectsGridView.SelectedRow.DataItem;
//...
}

Thanks,
Etam.
Click to expand...

Have you forgotten to specify the DataKeyNames property in the
<asp:GridView> tag...?
 
You actually have a field in your database table called 'id'...???
Click to expand...

Yes :). Strange for me is that
Int64 id = (Int64)ProjectsGridView.SelectedDataKey.Value;
is OK :/.

Regards,
Etam.
 
DataItem property is available only in RowDataBound. It makes a lot of sense
if you think about it since this event is the only time when grid items
actually meet their datasources.
Click to expand...

So what for is the DataItem property in GridViewRow?

Regards,
Etam.
 
It does get the data object that supplies data to the rows but it does it
only during the RowDataBound event. In all other times it returns null.
Click to expand...

Thanks! It explains a lot ;). Could You give me a link where can I
read about it from?

Regards,
Etam.
 
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