Question

 <InsertItemTemplate>


<asp:DropDownList ID="TxtsiteInsert" runat="server" Text='<%# Bind("SITE") 
       %>'  TabIndex="5" AutoPostBack="True" DataSourceID="inventsite"                                                                   


  DataTextField="SITEID" DataValueField="SITEID" 
 OnSelectedIndexChanged="sitedropdown_SelectedIndexChanged">


 </asp:DropDownList>


</InsertItemTemplate>

<ItemTemplate>

 <asp:Label ID="TxtSite" runat="server" Text='<%# Bind("SITE") %>'> 
 </asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="Warehouse" SortExpression="WAREHOUSE">

<EditItemTemplate>

<asp:TextBox ID="TxtWarehouseEdit" runat="server" Text='<%# Bind("WAREHOUSE") 
%>'></asp:TextBox>


</EditItemTemplate>

<InsertItemTemplate>

 <asp:DropDownList ID="TxtWarehouseInsert" runat="server" 

 TabIndex="6"  AutoPostBack="True" 

 SelectedValue='<%# Bind("WAREHOUSE") %>'>


 </asp:DropDownList>

这是我的vb编码：

     Protected Sub sitedropdown_SelectedIndexChanged(ByVal sender As Object, 
    ByVal e As EventArgs)
      Dim IdTxtsiteInsert As DropDownList = 
    CType(DetailsView3.Rows(0).FindControl("TxtsiteInsert"), DropDownList)
        Fillwarehouse(IdTxtsiteInsert.Text)
  End Sub
   Public Sub Fillwarehouse(ByVal siteid As String)

     Dim ddr As DropDownList = 
    DirectCast(DetailsView3.Rows(0).FindControl("TxtWarehouseInsert"), 
    DropDownList)
     Dim strConn As String =WebConfigurationManager.ConnectionStrings("BMGINC_DYNAX09_ProdConnectionString"). 
ConnectionString 

     Dim con As New SqlConnection(strConn)
      Dim cmd As New SqlCommand()
      cmd.Connection = con
      cmd.CommandType = CommandType.Text
      cmd.CommandText = "Select InventLocationId, Name from InventLocation 
   where InventSiteId ='" & siteid & "'"
     cmd.Parameters.AddWithValue("InventSiteId", siteid)
     Dim objDs As New DataSet()
     Dim dAdapter As New SqlDataAdapter()
     dAdapter.SelectCommand = cmd
      con.Open()
      dAdapter.Fill(objDs)
     con.Close()
     If objDs.Tables(0).Rows.Count > 0 Then
        ddr.DataSource = objDs.Tables(0)
        ddr.DataTextField = "InventLocationId"
        ddr.DataValueField = "InventLocationId"
        ddr.DataBind()
        ddr.Items.Insert(0, "-Select-")

    Else

        LblError.Text = "No Warehouse found"

    End If
End Sub

运行代码时，我得到的数据绑定方法（例如Eval（），XPath（）和Bind（））只能在发生数据绑定控制错误的情况下使用，并且所选值未存储在表中。我需要将场地和仓库存储到我的表中，但不允许我存储仓库记录，如何将这个选定的仓库下拉值传递到我的斧头表中

诸如Eval（），XPath（）和Bind（）之类的数据绑定方法只能在数据绑定控件的上下文中使用。

0 个答案: