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I have DetailsView that automatically selects data from a datasource. Within that detailsview I have 2 dropdown lists bound from a different datasource. On update I want the text and value of each drop down list to store into the database.

I can't seem to get the value of the dropdown lists so I can update the paramaters before the SQL command is executed. Or if there is another way to do so that'd be great.

<asp:DetailsView ID="UserProfile" runat="server"
     AutoGenerateRows="False" DataKeyNames="UserId" DefaultMode="Edit"
     DataSourceID="UserProfileDataSource" onitemupdated="UserProfile_ItemUpdated" OnPageIndexChanging="UserProfile_PageIndexChanging">
     <Fields>
          <asp:BoundField DataField="fname" HeaderText="First Name:"
               SortExpression="fname" />
         <asp:BoundField DataField="lname" HeaderText="Last Name:"
               SortExpression="lname" />
         <asp:BoundField DataField="address" HeaderText="Address:"
               SortExpression="address" />
         <asp:BoundField DataField="city" HeaderText="City:"
               SortExpression="city" />
          <asp:TemplateField HeaderText="State:" SortExpression="state">
              <EditItemTemplate>
                  <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="SqlDataSource1" DataTextField="State_en" DataValueField="StateId">
                  </asp:DropDownList>
              </EditItemTemplate>
              <InsertItemTemplate>
                  <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("state") %>'></asp:TextBox>
              </InsertItemTemplate>
              <ItemTemplate>
                  <asp:Label ID="Label1" runat="server" Text='<%# Bind("state") %>'></asp:Label>
              </ItemTemplate>
          </asp:TemplateField>
         <asp:BoundField DataField="zip" HeaderText="Zip Code:"
               SortExpression="zip" />
         <asp:BoundField DataField="phoneNum" HeaderText="Phone Number:"
               SortExpression="phoneNum" />
          <asp:TemplateField HeaderText="Auto Carrier:" SortExpression="autoCarrier">
              <EditItemTemplate>
                  <asp:DropDownList ID="DropDownList2" runat="server" DataSourceID="SqlDataSource2" DataTextField="Name" DataValueField="CarrerID">
                  </asp:DropDownList>
              </EditItemTemplate>
              <InsertItemTemplate>
                  <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("autoCarrier") %>'></asp:TextBox>
              </InsertItemTemplate>
              <ItemTemplate>
                  <asp:Label ID="Label2" runat="server" Text='<%# Bind("autoCarrier") %>'></asp:Label>
              </ItemTemplate>
          </asp:TemplateField>
          <asp:BoundField DataField="policyNum" HeaderText="Policy Number:"
               SortExpression="policyNum" />
                     <asp:CommandField ShowEditButton="True" />
     </Fields>
</asp:DetailsView>
<asp:SqlDataSource ID="UserProfileDataSource" runat="server"
          ConnectionString="<%$ ConnectionStrings:DefaultConnection %>"
          SelectCommand="SELECT [fname], [lname], [address], [city], [state], [zip], [phoneNum], [autoCarrier], [policyNum], [accountid] ,[UserId] FROM [UserProfile] WHERE ([UserId] = @UserId)" 
    OnSelecting="UserProfileDataSource_Selecting" 
    OnUpdating="OnSqlUpdating" 
    UpdateCommand="UPDATE UserProfile SET
    stateId = @stateId,
    carrierId = @carrierId,
    fname = @fname,
    lname= @lname,
    address = @address,
    city = @city,
    state = @state,
    zip = @zip,
    phoneNum = @phoneNum,
    autoCarrier = @autoCarrier,
    policyNum = @policyNum
    WHERE ([UserId] = @UserId)">
     <SelectParameters>
          <asp:Parameter Name="UserId" Type="Object" />
     </SelectParameters>
     <UpdateParameters>
         <asp:Parameter Name="fname" />
         <asp:Parameter Name="lname" />
         <asp:Parameter Name="address" />
         <asp:Parameter Name="city" />
         <asp:Parameter Name="state" />
         <asp:Parameter Name="zip" />
         <asp:Parameter Name="phoneNum" />
         <asp:Parameter Name="autoCarrier" />
         <asp:Parameter Name="policyNum" />
         <asp:Parameter Name="stateId" />
         <asp:Parameter Name="carrierId" />
         <asp:Parameter Name="UserId" />
     </UpdateParameters>
</asp:SqlDataSource>
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:DefaultConnection %>" SelectCommand="SELECT [StateId], [State_en] FROM [States]"></asp:SqlDataSource>
    <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:DefaultConnection %>" 
        SelectCommand="SELECT [CarrerID], [Name] FROM ### WHERE ([AccountID] = (SELECT [accountid] FROM ### WHERE ([UserId] = @UserId)))" OnSelecting="UserProfileDataSource_Selecting">
    <SelectParameters>
          <asp:Parameter Name="UserId" Type="Object" />
     </SelectParameters>
    </asp:SqlDataSource>

Here's the code Behind that I wrote, but doesn't work:

protected void OnSqlUpdating(object sender, SqlDataSourceCommandEventArgs e)
{

    string state = DropDownList1.SelectedItem.Text;
    string autoCarrier = DropDownList2.SelectedItem.Text;
    string stateId = DropDownList1.SelectedItem.Value;
    string carrierId = DropDownList2.SelectedItem.Value;

    e.Command.Parameters["@state"].Value = state;
    e.Command.Parameters["@autoCarrier"].Value = autoCarrier;
    e.Command.Parameters["@stateId"].Value = stateId;
    e.Command.Parameters["@carrierId"].Value = carrierId;
}

I keep getting:

Error 99 The name 'DropDownList1' does not exist in the current context Error 102 The name 'DropDownList1' does not exist in the current context
Error 101 The name 'DropDownList2' does not exist in the current context
Error 103 The name 'DropDownList2' does not exist in the current context

I'm new to ASP so any suggestions you recommend or cleaning up of bad code practices is appreciated.

4

1 回答 1

2

你不能直接访问DropDownList1， 因为 DropDownList2有控制。数据绑定后，您可以使用：TemplateFieldDetailsView

DropDownList1 myDropDownList =(DropDownList)UserProfile..Rows[0].Cells[0].FindControl("DropDownList1");
string state = myDropDownList .SelectedItem.Text;

要传递参数，您需要使用 OnUpdating 事件。

<asp:SqlDataSource ID="UserProfileDataSource" runat="server"  

OnUpdating="UserProfileDataSource_Updating"

          ConnectionString="<%$ ConnectionStrings:DefaultConnection %>" 
          SelectCommand="SELECT [fname], [lname], [address], [city], [state], [zip], [phoneNum], [autoCarrier], [policyNum], [accountid] ,[UserId] FROM [UserProfile] WHERE ([UserId] = @UserId)" 
    OnSelecting="UserProfileDataSource_Selecting" 
    OnUpdating="OnSqlUpdating" 
    UpdateCommand="UPDATE UserProfile SET
    stateId = @stateId,
    carrierId = @carrierId,
    fname = @fname,
    lname= @lname,
    address = @address,
    city = @city,
    state = @state,
    zip = @zip,
    phoneNum = @phoneNum,
    autoCarrier = @autoCarrier,
    policyNum = @policyNum
    WHERE ([UserId] = @UserId)">
     <SelectParameters>
          <asp:Parameter Name="UserId" Type="Object" />
     </SelectParameters>
     <UpdateParameters>
         <asp:Parameter Name="fname" />
         <asp:Parameter Name="lname" />
         <asp:Parameter Name="address" />
         <asp:Parameter Name="city" />
         <asp:Parameter Name="state" />
         <asp:Parameter Name="zip" />
         <asp:Parameter Name="phoneNum" />
         <asp:Parameter Name="autoCarrier" />
         <asp:Parameter Name="policyNum" />
         <asp:Parameter Name="stateId" />
         <asp:Parameter Name="carrierId" />
         <asp:Parameter Name="UserId" />
     </UpdateParameters>
</asp:SqlDataSource>
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:DefaultConnection %>" SelectCommand="SELECT [StateId], [State_en] FROM [States]"></asp:SqlDataSource>
    <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:DefaultConnection %>" 
        SelectCommand="SELECT [CarrerID], [Name] FROM ### WHERE ([AccountID] = (SELECT [accountid] FROM ### WHERE ([UserId] = @UserId)))" OnSelecting="UserProfileDataSource_Selecting">
    <SelectParameters>
          <asp:Parameter Name="UserId" Type="Object" />
     </SelectParameters>
    </asp:SqlDataSource>

然后在后面的代码中

  protected void UserProfileDataSource_Updating(object sender, SqlDataSourceCommandEventArgs e)
            {
                e.Command.Parameters["@ParamaterName"].Value = // The Value you get from the drop         downlist
            }
于 2013-09-27T23:44:21.787 回答