Csharp code selected record in the grid view to be displayed in the detail view

hi akila,
 
you can use the "SelectedIndexChanged" event of the gridview control to identify the selection change for row and then ahead you can use the "SelectedIndex"  property of the gridview control to get the index of the row. Based on the index of the row you can
get the control from the row as shown below

for eg:
protected void gv_SelectedIndexChanged(object sender, EventArgs e)
    {
        Label lbl = new Label();
        lbl =(Label) gv.Rows[gv.SelectedIndex].FindControl("controlname");
       // you can use lbl.Text to get the control contet. Depends on control
    }

controlname is the name of the control which is used to display data in the row. In above example "controlname" is assumed as label control