当 DetailsView 不处于只读模式时，我想将模板字段（链接按钮）设置为不可见。我创建了一个链接按钮来替换自动生成的“删除”按钮，并希望在编辑和插入时隐藏它。
<asp:DetailsView ID="resultDetailsView" runat="server" AutoGenerateRows="False" DataKeyNames="smo_code,id"
DataSourceID="detailviewDataSource" Height="50px" Width="125px" OnItemInserting="resultDetailsView_ItemInserting"
OnItemUpdating="resultDetailsView_ItemUpdating" OnItemUpdated="resultDetailsView_ItemUpdated"
OnItemDeleted="resultDetailsView_ItemDeleted" OnItemInserted="resultDetailsView_ItemInserted"
OnItemDeleting="resultDetailsView_ItemDeleting" OnModeChanging="resultDetailsView_ModeChanging"
OnDataBound="resultDetailsView_DataBound" OnItemCommand="resultDetailsView_ItemCommand">
<Fields>
<asp:BoundField DataField="event" HeaderText="event" SortExpression="event" />
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="deleteLink" runat="server" CommandName="Delete" Text="Delete"
OnClientClick='return confirm("Are you sure you want to delete this item?");' />
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="False" ShowEditButton="True" ShowInsertButton="True" />
</Fields>
</asp:DetailsView>
在后面的代码中，FINDCONTROL 返回 null：
protected void resultDetailsView_DataBound(object sender, EventArgs e)
{
LinkButton deleteLink = (LinkButton)resultDetailsView.FindControl("deleteLink");
if (resultDetailsView.CurrentMode == DetailsViewMode.ReadOnly)
{
deleteLink.Visible = true;
}
else
{
deleteLink.Visible = false;
}
}