我无法使用数据表正确绑定我的子中继器(lvTwo)。它总是抛出NullReferenceException。在调试模式下,我的数据表看起来很好,有什么想法吗?
HTML代码:
<asp:Repeater ID="lvOne" runat="server" OnItemDataBound="lvOne_ItemDataBound">
<ItemTemplate>
<div>
I am the one.
</div>
<asp:Repeater ID="lvTwo" runat="server">
<ItemTemplate>
I am the two.
</ItemTemplate>
</asp:Repeater>
</ItemTemplate>
</asp:Repeater>
代码隐藏(dtTable绑定到lvOne,dtTable2绑定到lvTwo):
protected void Page_Load(object sender, EventArgs e)
{
DataTable dtTable = new DataTable();
dtTable.TableName = "T1";
dtTable.Columns.Add("ProjectName");
DataRow dr = dtTable.NewRow();
dr["ProjectName"] = "ThreeSixFive";
dtTable.Rows.Add(dr);
if (!Page.IsPostBack)
{
lvOne.DataSource = dtTable;
lvOne.DataBind();
}
}
protected void lvOne_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
DataTable dtTable2 = new DataTable();
dtTable2.TableName = "T2";
dtTable2.Columns.Add("C");
DataRow dr = dtTable2.NewRow();
dr["C"] = "ThreeSixFive";
dtTable2.Rows.Add(dr);
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
if (dtTable2 != null)
{
lvTwo.DataSource = dtTable2;
lvTwo.DataBind();
}
}
}`
答案 0 :(得分:0)
罪魁祸首是由于未被识别的lvTwo控件。由于控件在设计器文件中注册,因此能够编译,而我需要使用ff:
var lvTwo = (ListView) e.Item.FindControl("lvTwo");