Retrieve values from GridView on SelectedIndex_changed

This is very different from rowindex_changed

For C#

Find the control, probably a label, of the data you want to retrieve.

    //Accessing BoundField Column

    string name = GridView1.SelectedRow.Cells[0].Text;

 

    //Accessing TemplateField Column controls

    string country =       (GridView1.SelectedRow.FindControl("lblCountry") as Label).Text;

 

    lblValues.Text = "<b>Name:</b> " + name + " <b>Country:</b> " + country;

Reference: https://www.aspsnippets.com/Articles/How-to-get-Selected-Row-cell-value-from-GridView-in-ASPNet.aspx