protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        string sqlstr = "update Patients set P_Name='"
        //    + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',ID_Card='"
            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "',Guardian_Name='"
            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[4].Controls[0])).Text.ToString().Trim() + "' where PatientID='"
            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
        sqlHp.SQLExecute(sqlstr);
        GridView1.EditIndex = -1;
        bind();
    }

string  str="a"+"b"+"c";