Get Value from Hidden Column in Gridview control

I have managed to get the value from my hidden field by using the SelectedIndexChanged event and the following line of code:

string keyValue = GridView1.SelectedDataKey.Value.ToString()

I would however prefer to get access to the hidden column value on the GridView1_RowDataBound event, so that I can then evaluate each row against the hidden columns value and decide whether or not to display the edit button in each row. Can I do this a different way?
10/5/2006 4:16:16 PM 72751 articles. 3 followers. Follow

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You can use e.Row.DataItem("field name") in the RowDataBound event -  as long as the field is in your SQL statement doesn't matter whether it is in your Gridview as a hidden column or not.


10/5/2006 10:24:24 PM
You can also use script in your GridView.
For example: if the field is a bit:
Visible='<%# Bind ("fieldnametobind") %>'
or when the field isn't null:
Visible=''<%# !Convert.IsDBNull(Eval("fieldnametoevaluate")) %>'
10/5/2006 10:41:33 PM
Tim can you please elaborate more? Perhaps a sample? I have experimented with this but still no joy
10/6/2006 5:28:49 PM

A bit of code that might help. Also if I need to manipulate edit/update/cancel I usually use template fields rather than command field.


Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)

If e.Row.RowType = DataControlRowType.DataRow Then 'Check Row is data and not header/footer

If e.Row.DataItem("column name from sql").ToString = "" Then

Dim lb As LinkButton = e.Row.FindControl("cmdEdit") 'If column is null disable edit button

lb.Enabled = False

End If

End If

End Sub

10/6/2006 6:51:20 PM

Hi Tim,

that worked well. I just had to convert it to c# (with a bit of casting).

Thanks for your help.

10/7/2006 6:11:56 AM
sorry i forgot to paste my code. here is the solution in case anybody needs to do it in c#

if (e.Row.RowType == DataControlRowType.DataRow)
            if (((DataRowView)e.Row.DataItem).Row["Role"].ToString() == "basic_user")
                LinkButton b = (LinkButton)e.Row.FindControl("lbEdit");
                b.Visible = false;
10/7/2006 6:53:42 AM

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