我正在尝试使用转发器显示其子类别和子子类别的购物类别。数据是绑定但它没有显示..任何人都可以帮助为什么? 这是我的代码:
.aspx文件
<asp:Repeater ID="CategoryRepeater" runat="server" OnItemDataBound="CategoryRepeater_OnItemDataBound">
<ItemTemplate>
<a href='Clothing.aspx?CategoryId=<%#Eval("CategoryId") %>'<%#Eval("CategoryName") %>></a><br />
<asp:Repeater ID="SubCategoryRepeater" runat="server" OnItemDataBound="SubCategoryRepeater_OnItemDataBound">
<ItemTemplate>
<a href='Clothing.aspx?CategoryId=<%#Eval("CategoryId") %>&SubCategoryId=<%#Eval("SubCategoryId") %>'<%#Eval("SubCategoryName") %>></a><br />
<asp:Repeater ID="SubSubCategoryRepeater" runat="server">
<ItemTemplate>
<a href='Clothing.aspx?CategoryId=<%#Eval("CategoryId") %>&SubCategoryId=<%#Eval("SubCategoryId") %>&SubSubCategoryId=<%#Eval("SubSubCategoryId") %>'<%#Eval("SubSubCategoryName") %>></a><br />
</ItemTemplate>
</asp:Repeater>
</ItemTemplate>
</asp:Repeater>
</ItemTemplate>
</asp:Repeater>
C#代码:
protected void CategoryRepeater_OnItemDataBound(object sender, RepeaterItemEventArgs e)
{
if ((e.Item.ItemType == ListItemType.Item)||(e.Item.ItemType == ListItemType.AlternatingItem))
{
DataRowView dataItem = e.Item.DataItem as DataRowView;
int categoryId = Convert.ToInt32(dataItem["CategoryId"]);
Repeater rp = (Repeater)e.Item.FindControl("SubCategoryRepeater");
ds = us.SelectSubCategories(categoryId);
rp.DataSource = ds;
rp.DataBind();
}
}
protected void SubCategoryRepeater_OnItemDataBound(object sender, RepeaterItemEventArgs e)
{
if ((e.Item.ItemType == ListItemType.Item)||(e.Item.ItemType == ListItemType.AlternatingItem))
{
DataRowView dataItem = e.Item.DataItem as DataRowView;
int SubCategoryId = Convert.ToInt32(dataItem["SubCategoryId"]);
Repeater rp1 = (Repeater)e.Item.FindControl("SubSubCategoryRepeater");
ds1 = us.SelectSubSubCategories(SubCategoryId);
rp1.DataSource = ds1;
rp1.DataBind();
}
}
答案 0 :(得分:1)
检查源代码以确保没有任何内容输出到页面。我想你只需要在锚标记内呈现类别名称。
这是相同的代码,简化了evals以查看正在发生的事情
<a href='Clothing.aspx?CategoryId={catid}'{name}></a>
应该是:
<a href='Clothing.aspx?CategoryId={catid}'>{name}</a>
或
<a href='Clothing.aspx?CategoryId=<%#Eval("CategoryId") %>'><%#Eval("CategoryName") %></a>
在所有三个地方都犯了同样的错误。
答案 1 :(得分:1)
我认为代码中的所有内容都是正确的,但输出错误。
你这样做:
<a href='Clothing.aspx?CategoryId=<%#Eval("CategoryId") %>&SubCategoryId=<%#Eval("SubCategoryId") %>'<%#Eval("SubCategoryName") %>></a><br />
但它必须是
<a href='Clothing.aspx?CategoryId=<%#Eval("CategoryId") %>&SubCategoryId=<%#Eval("SubCategoryId") %>'><%#Eval("SubCategoryName") %></a><br />
注意到我移动了'&gt;'后面&lt;%#Eval(“SubCategoryName”)%&gt;