Question

I have a gridvew on my form with some fields . I added two fields to my gridview cause i wanted to use the data in them in my behind code and i fetch them in behind code, but the thing is i don’t want those columns to be visible in gridview, so i tried to set their visible attribute ‘False’ but that didn’t work, i didnt have access to their data. how can it be achieved?

        <asp:BoundField DataField="Service_Id" HeaderText="Service_Id"   SortExpression="Service_Id" HeaderStyle-BackColor="Gray"
            Visible="true">
            <HeaderStyle BackColor="Gray"></HeaderStyle>
        </asp:BoundField>
        <asp:BoundField DataField="UserId" HeaderText="UserID" SortExpression="UserId" HeaderStyle-BackColor="Gray"
            Visible="true">
            <HeaderStyle BackColor="Gray"></HeaderStyle>
        </asp:BoundField>

And this is my page’s behind code :

    Button Button1 = (Button)sender;
        GridViewRow grdRow = (GridViewRow)Button1.Parent.Parent;
        HiddenFieldServiceID.Value = grdRow.Cells[0].Text;
        HiddenFieldUserID.Value = grdRow.Cells[1].Text;

Answer 1

You should not use BoundField for this. Use the DataKeyNames property instead.
The values can then be fetched using DataKeys[rowIndex]

ASPX:

DataKeyNames="Service_Id, UserId";

Code:

var Service_Id = (int)gv.DataKeys[rowIndex]["Service_Id"];
var UserId = (int)gv.DataKeys[rowIndex]["UserId"];