updating gridview

السلام عليكم و رحمة الله و بركاته

عندى GridView عملتله Binding بDataSet برمجيا

GridView1.DataSource = ds;
            GridView1.DataBind();

و عدلت فى RowEditing و RowUpdating events

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        GridView1.DataBind();
    }
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        GridView1.DataBind();
    }
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        int id = Int32.Parse(((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text);
        string user = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
        string pass = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
        string image = ((TextBox)GridView1.Rows[e.RowIndex].Cells[4].Controls[0]).Text;
        bool active = ((CheckBox)GridView1.Rows[e.RowIndex].Cells[5].Controls[0]).Checked;

        Label1.Text = id.ToString() + " - " + user + " - " + pass + " - " + image + " - " + active.ToString();
}

لكن عندما اضغط على Update

الVariables لا تأخذ القيم الجديدة من ال GridView

يعنى مثلا لو عندى Column اسمه password

الpassword مثلا 123 و انا غيرتها ل456 و ضغط update

ال variable pass بيأخذ ال123 و ليس ال456