C# 在GridView中嵌套ListView

我有一个ASP.NET GridView，其中一个值将ID绑定到其中一列

    <asp:TemplateField HeaderText="columnItems">
        <ItemTemplate>
            <asp:ListView ID="listOfItems" runat="server" DataSourceID="MyObjectDataSource >
                <ItemTemplate>
                    <asp:LinkButton ID="MyLinkButton" Runat="Server" Text='item'></asp:LinkButton>
                </ItemTemplate>
            </asp:ListView>
            <asp:ObjectDataSource ID="MyObjectDataSource" runat="server"   
                TypeName="MyTypeName.Whatever" SelectMethod="GetItems">
                <SelectParameters>
                    <asp:Parameter Name="requestId" Type="String" DefaultValue='<%# Eval("ID")'/>
                </SelectParameters>
            </asp:ObjectDataSource>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

此表的另一列应包含项列表，这些项应通过从GridView传入ID来解析

    <asp:TemplateField HeaderText="columnItems">
        <ItemTemplate>
            <asp:ListView ID="listOfItems" runat="server" DataSourceID="MyObjectDataSource >
                <ItemTemplate>
                    <asp:LinkButton ID="MyLinkButton" Runat="Server" Text='item'></asp:LinkButton>
                </ItemTemplate>
            </asp:ListView>
            <asp:ObjectDataSource ID="MyObjectDataSource" runat="server"   
                TypeName="MyTypeName.Whatever" SelectMethod="GetItems">
                <SelectParameters>
                    <asp:Parameter Name="requestId" Type="String" DefaultValue='<%# Eval("ID")'/>
                </SelectParameters>
            </asp:ObjectDataSource>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

为了实现这一点，我尝试将ListView嵌套在GridView中，并将ID传递到ListView使用的ObjectDataSource的默认参数中，但不允许使用以下语法：

    <asp:TemplateField HeaderText="columnItems">
        <ItemTemplate>
            <asp:ListView ID="listOfItems" runat="server" DataSourceID="MyObjectDataSource >
                <ItemTemplate>
                    <asp:LinkButton ID="MyLinkButton" Runat="Server" Text='item'></asp:LinkButton>
                </ItemTemplate>
            </asp:ListView>
            <asp:ObjectDataSource ID="MyObjectDataSource" runat="server"   
                TypeName="MyTypeName.Whatever" SelectMethod="GetItems">
                <SelectParameters>
                    <asp:Parameter Name="requestId" Type="String" DefaultValue='<%# Eval("ID")'/>
                </SelectParameters>
            </asp:ObjectDataSource>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

    <asp:TemplateField HeaderText="columnItems">
        <ItemTemplate>
            <asp:ListView ID="listOfItems" runat="server" DataSourceID="MyObjectDataSource >
                <ItemTemplate>
                    <asp:LinkButton ID="MyLinkButton" Runat="Server" Text='item'></asp:LinkButton>
                </ItemTemplate>
            </asp:ListView>
            <asp:ObjectDataSource ID="MyObjectDataSource" runat="server"   
                TypeName="MyTypeName.Whatever" SelectMethod="GetItems">
                <SelectParameters>
                    <asp:Parameter Name="requestId" Type="String" DefaultValue='<%# Eval("ID")'/>
                </SelectParameters>
            </asp:ObjectDataSource>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

您可能需要在RowDataBound事件中执行此操作，在那里获取ID，然后执行DB
然后做一些类似的事情

    <asp:TemplateField HeaderText="columnItems">
        <ItemTemplate>
            <asp:ListView ID="listOfItems" runat="server" DataSourceID="MyObjectDataSource >
                <ItemTemplate>
                    <asp:LinkButton ID="MyLinkButton" Runat="Server" Text='item'></asp:LinkButton>
                </ItemTemplate>
            </asp:ListView>
            <asp:ObjectDataSource ID="MyObjectDataSource" runat="server"   
                TypeName="MyTypeName.Whatever" SelectMethod="GetItems">
                <SelectParameters>
                    <asp:Parameter Name="requestId" Type="String" DefaultValue='<%# Eval("ID")'/>
                </SelectParameters>
            </asp:ObjectDataSource>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

if(e.Row.RowType != DataControlRowType.DataRow)
{
    return;
}

ListView a = (ListView)e.Row.FindControl("listOfItems");
a.datasource = // the result of your db call
a.databind();

将“OnRowDataBound”事件附加到GridView控件，以检索GridView上每一行的ListView项（在绑定GridView之后）：

    <asp:TemplateField HeaderText="columnItems">
        <ItemTemplate>
            <asp:ListView ID="listOfItems" runat="server" DataSourceID="MyObjectDataSource >
                <ItemTemplate>
                    <asp:LinkButton ID="MyLinkButton" Runat="Server" Text='item'></asp:LinkButton>
                </ItemTemplate>
            </asp:ListView>
            <asp:ObjectDataSource ID="MyObjectDataSource" runat="server"   
                TypeName="MyTypeName.Whatever" SelectMethod="GetItems">
                <SelectParameters>
                    <asp:Parameter Name="requestId" Type="String" DefaultValue='<%# Eval("ID")'/>
                </SelectParameters>
            </asp:ObjectDataSource>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

e、 g.在ASPX页面上：

    <asp:TemplateField HeaderText="columnItems">
        <ItemTemplate>
            <asp:ListView ID="listOfItems" runat="server" DataSourceID="MyObjectDataSource >
                <ItemTemplate>
                    <asp:LinkButton ID="MyLinkButton" Runat="Server" Text='item'></asp:LinkButton>
                </ItemTemplate>
            </asp:ListView>
            <asp:ObjectDataSource ID="MyObjectDataSource" runat="server"   
                TypeName="MyTypeName.Whatever" SelectMethod="GetItems">
                <SelectParameters>
                    <asp:Parameter Name="requestId" Type="String" DefaultValue='<%# Eval("ID")'/>
                </SelectParameters>
            </asp:ObjectDataSource>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>

<asp:GridView id="MyGridView" OnRowDataBound="GetItems" ... > ... </asp:GridView>

（如果合适的话，我试着编辑Tunisiano的帖子，详细说明他关于将事件附加到GridView并获取请求ID的回答，但是编辑们没有什么好的理由拒绝了它。上面的代码经过测试，准确地回答了问题）

    <asp:TemplateField HeaderText="columnItems">
        <ItemTemplate>
            <asp:ListView ID="listOfItems" runat="server" DataSourceID="MyObjectDataSource >
                <ItemTemplate>
                    <asp:LinkButton ID="MyLinkButton" Runat="Server" Text='item'></asp:LinkButton>
                </ItemTemplate>
            </asp:ListView>
            <asp:ObjectDataSource ID="MyObjectDataSource" runat="server"   
                TypeName="MyTypeName.Whatever" SelectMethod="GetItems">
                <SelectParameters>
                    <asp:Parameter Name="requestId" Type="String" DefaultValue='<%# Eval("ID")'/>
                </SelectParameters>
            </asp:ObjectDataSource>
        </ItemTemplate>
    </asp:TemplateField>
</Columns>