Gridview回发数据源持久性

Question

我有一个数据绑定到通用列表的网格。我编辑并需要将更改保留到db。

问题是，当我点击提交按钮时，它会进行PostBack。并将gridview的数据源设置为null。

我已经尝试将数据源存储在视图状态ViewState [“data”]中，该状态很好但在网格上进行更改时，ViewState中的数据没有更新。

有什么想法吗？

以下是GridView的代码：

<asp:GridView ID="dgMerchantConfiguration" runat="server" 
    AutoGenerateColumns="False"
    CausesValidation="False" CustomPagerCssClass="" HeaderHeight="30px" NumberOfPagesHeight="15px"
    NumberOfPagesWidth="40px" PagerHeight="15px" PagerWidth="40px" ShowDataGridCustomPaging="None"
    SortHeight="15px" SortWidth="70px" BackColor="White" BorderColor="#999999" BorderWidth="1px"
    CellPadding="1" Font-Size="Smaller" GridLines="Vertical" Width="100%" 
    onrowdatabound="dgMerchantConfiguration_RowDataBound" ViewStateMode="Enabled" EnableViewState="False">
    <SelectedRowStyle Font-Bold="True" ForeColor="White" BackColor="#f80000"></SelectedRowStyle>
    <AlternatingRowStyle BackColor="Gainsboro"></AlternatingRowStyle>
    <RowStyle ForeColor="Black" BackColor="#EEEEEE"></RowStyle>
    <HeaderStyle Font-Bold="True" ForeColor="White" BackColor="#bd0000" HorizontalAlign="Center"></HeaderStyle>
    <FooterStyle ForeColor="Black" BackColor="#CCCCCC"></FooterStyle>
    <Columns>
        <asp:BoundField DataField="Id" HeaderText="ID">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
        </asp:BoundField>

        <asp:BoundField DataField="CommissionType" HeaderText="Commission Type">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
        </asp:BoundField>
        <asp:TemplateField HeaderText="Select">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:CheckBox ID="chkSelect" runat="server" Checked='<%# Bind("Selected") %>' OnCheckedChanged="chkSelect_CheckedChanged" AutoPostBack="True" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Override">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:CheckBox ID="chkOverride" runat="server" Checked='<%# Bind("Default") %>' OnCheckedChanged="chkOverride_CheckedChanged" AutoPostBack="True" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Comission Structure">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:DropDownList ID="drpCommissionStructure" runat="server" Width="200px" OnSelectedIndexChanged="drpCommissionStructure_SelectedIndexChanged" AutoPostBack="True"></asp:DropDownList>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Min">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:TextBox ID="txtMin" runat="server" Width="50px" Text='<%# Bind("Min") %>'></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Max">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:TextBox ID="txtMax" runat="server" Width="50px" Text='<%# Bind("Max") %>'></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Fixed">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:TextBox ID="txtFixed" runat="server" Width="50px" Text='<%# Bind("Fixed") %>'></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Cost Per Unit">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:TextBox ID="txtCostPerUnit" runat="server" Width="50px" Text='<%# Bind("CostPerUnit") %>'></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Unit Value">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:TextBox ID="txtUnitValue" runat="server" Width="50px" Text='<%# Bind("UnitValue") %>'></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Excluded Amount">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:TextBox ID="txtExclAmount" runat="server" Width="50px" Text='<%# Bind("ExcludedAmount") %>'></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Percentage">
            <HeaderStyle HorizontalAlign="Center" CssClass="NormalBold"></HeaderStyle>
            <ItemStyle HorizontalAlign="Center" CssClass="Normal"></ItemStyle>
            <ItemTemplate>
                <asp:TextBox ID="txtPercentage" runat="server" Width="50px" Text='<%# Bind("Percentage") %>'></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

如何设置数据源：

protected void ddlMerchants_SelectedIndexChanged(object sender, EventArgs e)
{
    // Load the selected businesses config from the db
    var t = client.GetMerchantCommissionStructure(new GetMerchantCommissionStructureRequest() { MerchantID = Int32.Parse(ddlMerchants.SelectedItem.Value) });

    ViewState["data"] = t.Configurations;
    dgMerchantConfiguration.DataSource = t.Configurations;
    dgMerchantConfiguration.DataBind();
}

提前致谢！