Question

I have a web app(ASP.NET 2.0 using C#) that I am working on. In it, I have a gridview with a hyperlinkfield on a page(My_Page.aspx). When the Hyperlinkfield is clicked, it shows details on the same page.

<asp:HyperLinkField DataNavigateUrlFields='ID'                      DataNavigateUrlFormatString='My_Page.aspx?id={0}'                     DataTextField='NAME'                      HeaderText='Item1'                      SortExpression='NAME' /> 

I want to know how to find the Index of the row in which the Hyperlink is clicked, because I want to change its style, so that the user knows which row was clicked.

OR

How would I change the style of it when the user clicks hyperlink in the gridview.

Thank you.

Answer 1

In your example, the ‘index’ or rather ‘id’ of the hyperlink that was clicked will be in Request.QueryString[‘id’]

You could compare the ID from the querystring with the ID of the row you are binding to in the RowDataBound event.

Alternatively you could use a <%# DataBinder.Eval %> in your aspx to set the style based upon the ID field and the query string.

EDIT: Code Sample, try adding this to your code behind.

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)     {         if (e.Row.RowType == DataControlRowType.DataRow)         {             if(Request.QueryString['id'] != null &&                 Request.QueryString['id'] == DataBinder.Eval(e.Row.DataItem, 'id').ToString())             {                 e.Row.Style.Add('font-weight', 'bold');             }         }     }