How to use a hidden Boundfield in a GridView in ASP.NET?

Question

I am binding a GridView using a DataSource in asp.net, and i would like to have some hidden BoundFields so I can access those values in my RowDataBound Function. However, when I set Visible="False" on these BoundFields the values do not get set and are always blank in the RowDataBound function.

Is there a way to do this? I've seen some suggestions of setting the style on the BoundField to hidden but this did not work for me either. Ideally I don't even want a column created in the gridview, I just want these values to be hidden so I can access them. Thanks!

Work directly with `e.Row.DataItem`. A second option would be to use invisible TemplateFields. — Tim Schmelter, Feb 11 '11 at 22:07
I assume you've tried this with everything the same except `Visible="True"`, right? I'm not sure why the BoundField wouldn't still be accessible. — Justin Morgan - On strike, Feb 11 '11 at 22:12
sorry it took me so long to respond guys, wasnt able to check over the weekend. — Drew, Feb 14 '11 at 13:23
Does this answer your question? [How to hide a column (GridView) but still access its value?](https://stackoverflow.com/questions/5376278/how-to-hide-a-column-gridview-but-still-access-its-value) — Michael Freidgeim, Dec 13 '20 at 23:41

score 2 · Answer 1 · answered Feb 11 '11 at 22:03

2

Odd, How are you doing it? I know I've done this before using:

<asp:HiddenField ID="HiddenField1" runat="server" Value='<%# Eval("ColumnName")%>'/>

answered Feb 11 '11 at 22:03

RandomWebGuy

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From the OP description, it sounds like he's using – Forgotten Semicolon Feb 11 '11 at 22:06
Possibly, I'm just saying, I've had success with this in the past. – RandomWebGuy Feb 11 '11 at 22:08

score 2 · Answer 2 · answered Feb 12 '11 at 05:12

For this i will suggest you to use DataKey.

Pls refer this link http://www.codeproject.com/KB/grid/Data_presentation.aspx

eg:

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"

DataKeyNames="emp_id,Code">

int EmployeeID = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Values[0]);
  int DepartementID = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Values[1]);

in DataRow bound:

((GridView)sender).DataKeys[e.Row.RowIndex].Value.ToString();

Geetha

score 1 · Accepted Answer · answered Feb 11 '11 at 22:09

1

Have you tried using the DataItem from the GridViewRowEventArgs passed to your RowDataBound method?

Like:

protected void MyGridView_OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if(e.Row.RowType == DataControlRowType.DataRow)
    {
        DataRowView rowView = (DataRowView)e.Row.DataItem;
        // do something with rowView["myHiddenField"]
    }
}

Check MSDN here.

answered Feb 11 '11 at 22:09

Forgotten Semicolon

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i was previously using if (e.Row.RowType == DataControlRowType.DataRow) { string Name = e.Row.Cells[5].Text; } which may have been why it didnt work – Drew Feb 14 '11 at 13:25

How to use a hidden Boundfield in a GridView in ASP.NET?

3 Answers3