Conditional hyperlinkfield in a gridview? ASP.net

Question

I put a hyperlinkfield into a gridview, but I realise sometimes I want it to be clickable and sometimes not, depending on the data.

If the item is A or B, I want a hyperlink to bibble.aspx?id=123 , otherwise I just want plain text.

What's the best way? Should I be using another type of field for this?

Answer 1

You're probably better off with a template field and a hyperlink control, with the NavigateUrl determined by a ternary operator.

Answer 2

You need to handle the RowDataBound event of your GridView.

This link demonstrates how to use the RowDataBound event to modify the value of a field in the data source before it is displayed in a GridView control.

Answer 3

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" 
     onrowdatabound="GridView1_RowDataBound">
    <Columns>
        <asp:TemplateField HeaderText="Column to check">
            <ItemTemplate>
                <asp:Label runat="server" ID="lblCrtl" Text='<%# Eval("Name") %>' />
            </ItemTemplate>
        </asp:TemplateField>

        <asp:TemplateField HeaderText="Column Name">

        </asp:TemplateField>
    </Columns>
</asp:GridView>



protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        // you may need to do this if you didnt use templatefield;
        // string val = e.Row.Cells[<column index>].Text;
        // if its templatefield do following;
        Label lbl = e.Row.FindControl("lblCrtl") as Label; 

        Button btn = null;

        if (lbl.Text == "Car") // put your own value to check, my case it was Car
        {
            btn = new Button();
            btn.Text = "Test";
            e.Row.Cells[1].Controls.Add(btn); // cells<column index that control will be added>
        }
    }
}