Display GridView Row Details in Label On LinkButton Click in ASP.Net

Add a click event to the Button and then use the following code

  protected void LinkButton1_Click(object sender, EventArgs e)
    {
        GridViewRow row = (sender as LinkButton) as GridViewRow;
        Label Label1 = row.FindControl("Label1") as Label;
        Label1.Text = "ABC";
    }

This way

protected void redirect(object sender, EventArgs e)
{
    string Id = (sender as LinkButton).CommandArgument;
    Response.Redirect("~/Details.aspx?Id" = Id);
}