Asp.net GridView模板按钮

以下是我的gridview：

   <asp:GridView ID="gvconsumer" runat="server" AutoGenerateColumns="False" Width="50%" >
        <Columns>
            <asp:TemplateField HeaderText="">
                <ItemTemplate>
                    <asp:Label ID="lblid" runat="server" Text='<%# Bind("id") %>' Visible="false" ></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Consumer">
                <ItemTemplate>
                    <asp:Label ID="lblconsumer" runat="server" Text='<%# Bind("FirstName") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Name">
                <ItemTemplate>
                    <asp:Label ID="lblname" runat="server" Text='<%# Bind("LastName") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Status">
                <ItemTemplate>
                    <asp:Label ID="lblstatus" runat="server" Text='<%# Bind("Status") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="DateCreated">
                <ItemTemplate>
                    <asp:Label ID="lbldatecreaterd" runat="server" Text='<%# Bind("DateCreated") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>

            <asp:TemplateField HeaderText="">
                <ItemTemplate>
                    <asp:Button ID="btnApprove" runat="server" Text="Approve" OnClick="btnApprove_Click" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="">
                <ItemTemplate>
                    <asp:Button ID="btnReject" runat="server" Text="Reject" OnClick="btnApprove_Click" />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>

这是我的ConsumerStatus（）数据层：

以下是绑定GridView的方式：

    DataTable gridViewConsumer = new DataTable();
    gridViewConsumer = ClassConsumer.GetRows();

    gvconsumer.DataSource = gridViewConsumer;
    gvconsumer.DataBind();

我的问题是，我必须双击按钮来更新gridView的状态字段。但是当我检查数据库时（第一次单击），状态字段已经更新了。。

---

请帮助……

在db操作成功后，您需要再次绑定网格

        string retUpdateStatus = "";

        string consumerStatus = "UPDATE MerchantConsumer SET Status = @Status, DateAccepted = @DateAccepted WHERE ConsumerID = @Consumerid";

        string[] param = { "@Consumerid", "@Status", "@DateAccepted" };
        object[] paramVal = { ConsumerID, Status, DateAccepted };

        try
        {
            ClassDBQuery.ExecNonQuery(consumerStatus, param, paramVal);
        }
        catch (Exception ex)
        {
            throw ex;
        }

        return retUpdateStatus;

    DataTable gridViewConsumer = new DataTable();
    gridViewConsumer = ClassConsumer.GetRows();

    gvconsumer.DataSource = gridViewConsumer;
    gvconsumer.DataBind();