如何在网格 ItemTemplate 中 hide/show a DIV?
How do I hide/show a DIV inside a grid ItemTemplate?
我想像这样以编程方式在网格内设置单独的 DIV visible/hidden,但它不起作用。您将如何修复此代码?
foreach (DataGridItem dgItem in dgW.Items)
{
HtmlGenericControl dvGoodRow =
(HtmlGenericControl)dgItem.FindControl("dvGoodRow");
HtmlGenericControl dvBadRow =
(HtmlGenericControl)dgItem.FindControl("dvBadRow");
dvGoodRow.Visible = true;
dvBadRow.Visible = false;
}
调试会话显示我上面设置的 Visible 属性至少在我的手表上确实有效 window,但在浏览器上我看不到任何变化。我有一个如下所示的网格:
<asp:datagrid id="dgW" AutoGenerateColumns="False" ShowHeader="False" ShowFooter="False" runat="server" DataKeyField="SID" CellPadding="0" GridLines="None" AllowSorting="True" OnItemDataBound="dgW_ItemDataBound">
<HeaderStyle />
<FooterStyle>
</FooterStyle>
<Columns>
<asp:TemplateColumn HeaderText="SID" SortExpression="SID">
<ItemTemplate>
<asp:Label ID="lblSID" Runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "SID") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Extension" SortExpression="ExtensionStopDate">
<ItemTemplate>
<asp:Label id="lblExtensionStopDate" Runat="server" text='<%# String.Format("{0:MM/dd/yyyy}", DataBinder.Eval(Container.DataItem, "ExtensionStopDate"))%>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn>
<ItemTemplate>
<div id="dvGoodRow" runat="server" hidden>
<div>
<asp:Label runat="server" ID="lblGoodRow">
<i id="icnGoodRow" runat="server"></i>
</asp:Label>
</div>
</div>
<div id="dvBadRow" runat="server" hidden>
<div>
<asp:Label runat="server" ID="lblBadRow">
<i id="icnBadRow" runat="server"></i>
</asp:Label>
</div>
</div>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:datagrid>
删除 'hidden' 属性 并使用 visible
<div id="dvGoodRow" runat="server" visible="false">
<div id="dvBadRow" runat="server" visible="false">
这是我最终修复代码的方法:我切换到 showing/hiding ASP.NET 面板而不是 DIV!
<asp:TemplateColumn>
<ItemTemplate>
<asp:Panel runat="server" ID="pnlGoodRow" Visible="False">
<div id="dvGoodRow">
<asp:Label runat="server" ID="lblGoodRow">
<i id="icnGoodRow" runat="server"></i>
</asp:Label>
</div>
</asp:Panel>
<asp:Panel runat="server" ID="pnlBadRow" Visible="False">
<div id="dvBadRow">
<asp:Label runat="server" ID="lblBadRow">
<i id="icnBadRow" runat="server"></i>
</asp:Label>
</div>
</asp:Panel>
</ItemTemplate>
</asp:TemplateColumn>
所以在代码中,我现在 hide/show Panel 元素而不是 DIV:
foreach (DataGridItem dgItem in dgW.Items)
{
System.Web.UI.WebControls.Panel pnlGoodRow =
(System.Web.UI.WebControls.Panel)dgItem.FindControl("pnlGoodRow");
System.Web.UI.WebControls.Panel pnlBadRow =
(System.Web.UI.WebControls.Panel)dgItem.FindControl("pnlBadRow");
pnlGoodRow.Visible = true;
pnlBadRow.Visible = false;
}
这有效!
我想像这样以编程方式在网格内设置单独的 DIV visible/hidden,但它不起作用。您将如何修复此代码?
foreach (DataGridItem dgItem in dgW.Items)
{
HtmlGenericControl dvGoodRow =
(HtmlGenericControl)dgItem.FindControl("dvGoodRow");
HtmlGenericControl dvBadRow =
(HtmlGenericControl)dgItem.FindControl("dvBadRow");
dvGoodRow.Visible = true;
dvBadRow.Visible = false;
}
调试会话显示我上面设置的 Visible 属性至少在我的手表上确实有效 window,但在浏览器上我看不到任何变化。我有一个如下所示的网格:
<asp:datagrid id="dgW" AutoGenerateColumns="False" ShowHeader="False" ShowFooter="False" runat="server" DataKeyField="SID" CellPadding="0" GridLines="None" AllowSorting="True" OnItemDataBound="dgW_ItemDataBound">
<HeaderStyle />
<FooterStyle>
</FooterStyle>
<Columns>
<asp:TemplateColumn HeaderText="SID" SortExpression="SID">
<ItemTemplate>
<asp:Label ID="lblSID" Runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "SID") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Extension" SortExpression="ExtensionStopDate">
<ItemTemplate>
<asp:Label id="lblExtensionStopDate" Runat="server" text='<%# String.Format("{0:MM/dd/yyyy}", DataBinder.Eval(Container.DataItem, "ExtensionStopDate"))%>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn>
<ItemTemplate>
<div id="dvGoodRow" runat="server" hidden>
<div>
<asp:Label runat="server" ID="lblGoodRow">
<i id="icnGoodRow" runat="server"></i>
</asp:Label>
</div>
</div>
<div id="dvBadRow" runat="server" hidden>
<div>
<asp:Label runat="server" ID="lblBadRow">
<i id="icnBadRow" runat="server"></i>
</asp:Label>
</div>
</div>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:datagrid>
删除 'hidden' 属性 并使用 visible
<div id="dvGoodRow" runat="server" visible="false">
<div id="dvBadRow" runat="server" visible="false">
这是我最终修复代码的方法:我切换到 showing/hiding ASP.NET 面板而不是 DIV!
<asp:TemplateColumn>
<ItemTemplate>
<asp:Panel runat="server" ID="pnlGoodRow" Visible="False">
<div id="dvGoodRow">
<asp:Label runat="server" ID="lblGoodRow">
<i id="icnGoodRow" runat="server"></i>
</asp:Label>
</div>
</asp:Panel>
<asp:Panel runat="server" ID="pnlBadRow" Visible="False">
<div id="dvBadRow">
<asp:Label runat="server" ID="lblBadRow">
<i id="icnBadRow" runat="server"></i>
</asp:Label>
</div>
</asp:Panel>
</ItemTemplate>
</asp:TemplateColumn>
所以在代码中,我现在 hide/show Panel 元素而不是 DIV:
foreach (DataGridItem dgItem in dgW.Items)
{
System.Web.UI.WebControls.Panel pnlGoodRow =
(System.Web.UI.WebControls.Panel)dgItem.FindControl("pnlGoodRow");
System.Web.UI.WebControls.Panel pnlBadRow =
(System.Web.UI.WebControls.Panel)dgItem.FindControl("pnlBadRow");
pnlGoodRow.Visible = true;
pnlBadRow.Visible = false;
}
这有效!