Getting index of a gridview when hyperlinkfield is clicked

Question

Hi,
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");
            }
        }
    }

Answer 2

hi

read this

LinkButton in GridView and QueryString Parameters