GridView RowUpdating - UpdateParameters

Question

我无法设置所有更新参数。我的GridView中的大部分字段都是DataBound，但其中两个是下拉列表，一个列表项指定，另一个从另一个数据源拉取。当用户点击GridView上的“更新”时，我想将它们的值设置为UpdateParameters以发送到我的存储过程。虽然我不确定如何去做这件事。

这是我的工作的代码，这两个下拉列表是 “ddlTransferLocation” 和 “ddlReconcileStatus”：

数据来源

<asp:SqlDataSource ID="reconcileDataSource" runat="server" 
    ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 
    SelectCommand="GetReconcileItems" SelectCommandType="StoredProcedure" 
    UpdateCommand="UpdateReconcileItems" UpdateCommandType="StoredProcedure"> 

    <UpdateParameters> 
     <asp:Parameter Name="ItemID" /> 
     <asp:Parameter Name="TransType" Type="String" /> 
     <asp:Parameter Name="LocationID" Type="String" /> 
     <asp:Parameter Name="Description" Type="String" /> 
     <asp:Parameter Name="Stat" Type="String" /> 
     <asp:Parameter Name="TransferLocation" Type="String" /> 
    </UpdateParameters> 

</asp:SqlDataSource> 

C＃ROW UPDATING

protected void reconcileGrid_RowUpdating(object sender, GridViewUpdateEventArgs e) 
    { 
     DropDownList ddlReconcileStatus = (DropDownList)reconcileGrid.Rows[e.RowIndex].Cells[0].FindControl("ddlReconcileStatus"); 

     reconcileDataSource.UpdateParameters["Stat"].DefaultValue = ddlReconcileStatus.SelectedValue.ToString(); 

    } 

ASP.NET GRIDVIEW

<asp:UpdatePanel ID="reconcileUpdatePanel" runat="server"> 
     <ContentTemplate> 
      <asp:GridView ID="reconcileGrid" runat="server" AutoGenerateColumns="False" 
       DataKeyNames="ItemID" DataSourceID="reconcileDataSource" OnRowUpdating="reconcileGrid_RowUpdating" > 
       <Columns> 
        <asp:CommandField ShowEditButton="True" /> 
        <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" ReadOnly="true" /> 
        <asp:BoundField DataField="Description" HeaderText="Description" SortExpression="Description" ReadOnly="true"/> 
        <asp:BoundField DataField="last_known_location" HeaderText="Last Known Location" SortExpression="last_known_location" ReadOnly="true" /> 
        <asp:TemplateField HeaderText="Status"> 
         <ItemTemplate> 
          <asp:Label ID="lblStatus" runat="server" Text='<%# evalStatus(Eval("Stat")) %>'></asp:Label></ItemTemplate><EditItemTemplate> 
          <asp:DropDownList ID="ddlReconcileStatus" runat="server" OnSelectedIndexChanged="ddlReconcileStatus_SelectedIndexChanged" AutoPostBack="true" > 
           <asp:ListItem Value="3" Text="Allocated"></asp:ListItem><asp:ListItem Value="4" Text="Transferred"></asp:ListItem></asp:DropDownList></EditItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="Transfer Location" Visible="false" > 
         <EditItemTemplate> 
          <asp:DropDownList ID="ddlTransferLocation" runat="server" 
           DataSourceID="ddlTransferLocationDataSource" DataTextField="Name" 
           DataValueField="ID" Enabled="true" ></asp:DropDownList> 
         <asp:SqlDataSource 
           ID="ddlTransferLocationDataSource" runat="server" 
           ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 
           SelectCommand="SELECT [ID], [Name] FROM [TransferLocation]"> 
         </asp:SqlDataSource> 
         </EditItemTemplate> 
        </asp:TemplateField> 
        <asp:BoundField DataField="ItemID" HeaderText="ItemID" ReadOnly="true" /> 
       </Columns> 
      </asp:GridView> 
     </ContentTemplate> 
    </asp:UpdatePanel> 

Answer 1

我想你应该使用SqlDataSource.Updating事件，并完成类似

DropDownList ddlReconcileStatus = (DropDownList)reconcileGrid.Rows[reconcileGrid.EditIndex].Cells[0].FindControl("ddlReconcileStatus"); 
reconcileDataSource.UpdateParameters["Stat"].DefaultValue = ddlReconcileStatus.SelectedValue.ToString();