C# 是否可能将数据从Webservice拉入Gridview？

我正试图将定价从我的Web服务拉到我的gridview中。为此，我在Itemtemplate和GridView行中使用了一个带有标签的列

我得到的错误标签2在当前上下文中不存在？？？？但显然是这样。当我将label2移到GridView之外时，就会找到它。但我得到的错误对象引用未设置为PartNumber=row.Cells[1].Text上对象的实例

这段代码会像我写的那样工作吗？以下是我用于执行此操作的代码：

<asp:GridView ID="GridView1" runat="server" BackColor="White" 
     BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px" 
     CellPadding="4" ForeColor="Black" GridLines="Vertical" 
     AutoGenerateColumns="False" DataKeyNames="ID" 
     DataSourceID="SqlDataSource2" Width="652px" CssClass="mGrid" 
     PagerStyle-CssClass="pgr" AlternatingRowStyle-CssClass="alt" >
    <AlternatingRowStyle BackColor="White" CssClass="alt" />
    <FooterStyle BackColor="#CCCC99" />
    <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="#F7F7DE" ForeColor="Black" 
             HorizontalAlign="Right" CssClass="pgr" />
    <RowStyle BackColor="#F7F7DE" />
    <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
    <SortedAscendingCellStyle BackColor="#FBFBF2" />
    <SortedAscendingHeaderStyle BackColor="#848384" />
    <SortedDescendingCellStyle BackColor="#EAEAD3" />
    <SortedDescendingHeaderStyle BackColor="#575357" />
    <Columns>
       <asp:BoundField DataField="ID" HeaderText="ID" 
            InsertVisible="False" ReadOnly="True" SortExpression="ID" 
            Visible="False" />
       <asp:BoundField DataField="PartNumber" 
            HeaderText="PartNumber" SortExpression="PartNumber" />
       <asp:BoundField DataField="PartDescription" 
            HeaderText="PartDescription" SortExpression="PartDescription" />
       <asp:BoundField DataField="Qty" HeaderText="Qty" SortExpression="Qty" />
       <asp:TemplateField HeaderText="Price">
       <ItemTemplate>
          <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
       </ItemTemplate>
       </asp:TemplateField>
    </Columns>        
</asp:GridView>

---

无法在页面加载中直接访问label控件，因为它位于GridView控件中。您可以在GridView的RowDataBound事件中设置其值，方法如下：-

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
      if (e.Row.RowType == DataControlRowType.DataRow)
      {
           Label Label2 = (Label)e.Row.FindControl("Label2");
           //And then set your value
           Label2.Text = //Your value
      }
}

<asp:TemplateField HeaderText="Price">
       <ItemTemplate>
             <%# Eval("Your Property")) %>
       </ItemTemplate>
</asp:TemplateField>

或者，您可以更改标记以直接绑定数据，如下所示：-

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
      if (e.Row.RowType == DataControlRowType.DataRow)
      {
           Label Label2 = (Label)e.Row.FindControl("Label2");
           //And then set your value
           Label2.Text = //Your value
      }
}

<asp:TemplateField HeaderText="Price">
       <ItemTemplate>
             <%# Eval("Your Property")) %>
       </ItemTemplate>
</asp:TemplateField>