ListView.ItemPlaceholderID Property
Definition
Important
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Gets or sets the ID for the item placeholder in a ListView control.
public:
virtual property System::String ^ ItemPlaceholderID { System::String ^ get(); void set(System::String ^ value); };public virtual string ItemPlaceholderID { get; set; }member this.ItemPlaceholderID : string with get, setPublic Overridable Property ItemPlaceholderID As StringProperty Value
The ID for the item placeholder in a ListView control. The default is "itemPlaceholder".
Exceptions
The specified ID is null or an empty string.
Examples
The following example shows how to use the ItemPlaceholderID property to specify an ID for the item placeholder of the ListView control.
<%@ Page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>ListView GroupContainerID and ItemContainerID Example</title>
<style type="text/css">
body
{
font: 10pt Trebuchet MS, Arial, Tahoma;
text-align: center;
}
th { background: #b7cfff; }
.item
{
border: 1px dashed #a4cbf4;
background: white;
min-height: 19px;
width: 33%;
}
.alternatingItem
{
border: solid 1px #a4cbf4;
background: #edf5fd;
width: 33%;
min-height: 19px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<h3>ListView GroupContainerID and ItemContainerID Example</h3>
<asp:ListView ID="ContactsListView"
DataSourceID="ContactsDataSource"
GroupItemCount="3"
GroupPlaceholderID="ContactRowContainer"
ItemPlaceholderID="ContactItemContainer"
runat="server">
<LayoutTemplate>
<table cellpadding="4" width="640px" runat="server" id="tblContacts">
<tr runat="server">
<th colspan="3" runat="server">Contacts</th>
</tr>
<tr runat="server" id="ContactRowContainer" />
</table>
<asp:DataPager ID="ContactsDataPager" runat="server" PageSize="30">
<Fields>
<asp:NumericPagerField ButtonCount="10" />
</Fields>
</asp:DataPager>
</LayoutTemplate>
<GroupTemplate>
<tr runat="server" id="ContactRow">
<td runat="server" id="ContactItemContainer" />
</tr>
</GroupTemplate>
<ItemTemplate>
<td class="item" runat="server">
<asp:Label ID="NameLabel" runat="server"
Text='<%# Eval("LastName") + ", " + Eval("FirstName")%>' />
</td>
</ItemTemplate>
<AlternatingItemTemplate>
<td class="alternatingItem" runat="server">
<asp:Label ID="NameLabel" runat="server"
Text='<%# Eval("LastName") + ", " + Eval("FirstName")%>' />
</td>
</AlternatingItemTemplate>
</asp:ListView>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the AdventureWorks sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:SqlDataSource ID="ContactsDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
SelectCommand="SELECT [FirstName], [LastName]
FROM Person.Contact ORDER BY [LastName], [FirstName] ">
</asp:SqlDataSource>
</form>
</body>
</html>
<%@ Page language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>ListView GroupContainerID and ItemContainerID Example</title>
<style type="text/css">
body
{
font: 10pt Trebuchet MS, Arial, Tahoma;
text-align: center;
}
th { background: #b7cfff; }
.item
{
border: 1px dashed #a4cbf4;
background: white;
min-height: 19px;
width: 33%;
}
.alternatingItem
{
border: solid 1px #a4cbf4;
background: #edf5fd;
width: 33%;
min-height: 19px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<h3>ListView GroupContainerID and ItemContainerID Example</h3>
<asp:ListView ID="ContactsListView"
DataSourceID="ContactsDataSource"
GroupItemCount="3"
GroupPlaceholderID="ContactRowContainer"
ItemPlaceholderID="ContactItemContainer"
runat="server">
<LayoutTemplate>
<table cellpadding="4" width="640px" runat="server" id="tblContacts">
<tr id="Tr1" runat="server">
<th id="Th1" colspan="3" runat="server">Contacts</th>
</tr>
<tr runat="server" id="ContactRowContainer" />
</table>
<asp:DataPager ID="ContactsDataPager" runat="server" PageSize="30">
<Fields>
<asp:NumericPagerField ButtonCount="10" />
</Fields>
</asp:DataPager>
</LayoutTemplate>
<GroupTemplate>
<tr runat="server" id="ContactRow">
<td runat="server" id="ContactItemContainer" />
</tr>
</GroupTemplate>
<ItemTemplate>
<td id="Td1" class="item" runat="server">
<asp:Label ID="NameLabel" runat="server"
Text='<%# Eval("LastName") & ", " & Eval("FirstName")%>' />
</td>
</ItemTemplate>
<AlternatingItemTemplate>
<td id="Td2" class="alternatingItem" runat="server">
<asp:Label ID="NameLabel" runat="server"
Text='<%# Eval("LastName") & ", " & Eval("FirstName")%>' />
</td>
</AlternatingItemTemplate>
</asp:ListView>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the AdventureWorks sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:SqlDataSource ID="ContactsDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
SelectCommand="SELECT [FirstName], [LastName]
FROM Person.Contact ORDER BY [LastName], [FirstName] ">
</asp:SqlDataSource>
</form>
</body>
</html>
Remarks
Use the ItemPlaceholderID property to specify an ID for the item placeholder. The item placeholder is the control that you add to the LayoutTemplate template (if you are not using groups) or to the GroupTemplate template (if you are using groups) to represent where the item will be rendered.
Applies to
See also
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