在ASP.NET 3.5中使用新的ListView控件(4)
2010-11-19 11:10
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正如你所看到的，使用ListView控件显示数据相对要直接得多，但你还可以让用户在ListView中直接编辑数据，添加一个新页面ListViewEditExample.aspx，它的代码如清单2所示。
清单2.编辑ListView
<%@ Page Language="C#" %>
<script runat="server">
void deptsView_ItemUpdated(object sender,
ListViewUpdatedEventArgs e)
{
lblResult.Text = e.AffectedRows.ToString() +
" row(s) successfully updated";
}
void deptsView_PagePropertiesChanged(object sender, EventArgs e)
{
//Set the text to empty when navigating to a different page
lblResult.Text = "";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<link rel="Stylesheet" type="text/css" href="StyleSheet.css" />
<title>Editing Data using ListView Control</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="ContactsListView" DataSourceID="deptSource"
DataKeyNames="DepartmentID" runat="server"
OnItemUpdated="deptsView_ItemUpdated"
OnPagePropertiesChanged="deptsView_PagePropertiesChanged"> DataKeyNames="DepartmentID" runat="server"
OnItemUpdated="deptsView_ItemUpdated"
OnPagePropertiesChanged="deptsView_PagePropertiesChanged">
<LayoutTemplate>
> runat="server" id="tblProducts">
<tr id="row1" runat="server" class="header">
<th id="header2" runat="server">Name</th>
<th id="header3" runat="server">Group Name</th>
<th id="header1" runat="server">Action</th>
</tr>
<tr runat="server" id="itemPlaceholder" />
</table>
<asp:DataPager runat="server" ID="deptsDataPager"
PageSize="3"> PageSize="3">
<Fields>
<asp:NextPreviousPagerField ShowFirstPageButton="True"
ShowLastPageButton="True" FirstPageText="|< ShowLastPageButton="True" FirstPageText="|<< "
LastPageText=" >>|" NextPageText=" >"
PreviousPageText=" <" />
</Fields>
</asp:DataPager>
</LayoutTemplate>
<ItemTemplate>
<tr id="row2" runat="server">
<td>
<asp:Label ID="lblName" runat="Server"
Text='< Text='<%#Eval("Name") %>' />
</td>
<td valign="top">
<asp:Label ID="lblGroupName" runat="Server"
Text='< Text='<%#Eval("GroupName") %>' />
</td>
<td>
<asp:LinkButton ID="btnEdit" runat="Server" Text="Edit"
CommandName="Edit" /> CommandName="Edit" />
</td>
</tr>
</ItemTemplate>
<EditItemTemplate>
<tr style="background-color: #ADD8E6">
<td>
<asp:TextBox ID="txtName" runat="server"
Text='< Text='<%# Bind("Name") %>'
MaxLength="50" /><br />
</td>
<td>
<asp:TextBox ID="txtGroupName" runat="server" Text='<%#
Bind("GroupName") %>' MaxLength="50" /><br />
</td>
<td>
<asp:LinkButton ID="btnUpdate" runat="server"
CommandName="Update" Text="Update" /> CommandName="Update" Text="Update" />
<asp:LinkButton ID="btnCancel" runat="server"
CommandName="Cancel" Text="Cancel" /> CommandName="Cancel" Text="Cancel" />
</td>
</tr>
</EditItemTemplate>
</asp:ListView>
<asp:SqlDataSource ID="deptSource" runat="server"
ConnectionString="< ConnectionString="<%$ ConnectionStrings:AdventureWorks %>"
SelectCommand="SELECT [DepartmentID],[Name],[GroupName] FROM
HumanResources.Department" UpdateCommand="UPDATE
HumanResources.Department SET Name = @Name,
GroupName = @GroupName WHERE DepartmentID = @DepartmentID">
</asp:SqlDataSource>
<br /><br />
<asp:Label runat="server" ID="lblResult" Text=""
Font-Bold="true" /> Font-Bold="true" />
</div>
</form>
</body>
</html>
清单2的代码说明了如何使用EditItemTemplate组件在编辑模式下生成内容，然后通过SqlDataSource更新数据库
清单2.编辑ListView
<%@ Page Language="C#" %>
<script runat="server">
void deptsView_ItemUpdated(object sender,
ListViewUpdatedEventArgs e)
{
lblResult.Text = e.AffectedRows.ToString() +
" row(s) successfully updated";
}
void deptsView_PagePropertiesChanged(object sender, EventArgs e)
{
//Set the text to empty when navigating to a different page
lblResult.Text = "";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<link rel="Stylesheet" type="text/css" href="StyleSheet.css" />
<title>Editing Data using ListView Control</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ListView ID="ContactsListView" DataSourceID="deptSource"
DataKeyNames="DepartmentID" runat="server"
OnItemUpdated="deptsView_ItemUpdated"
OnPagePropertiesChanged="deptsView_PagePropertiesChanged"> DataKeyNames="DepartmentID" runat="server"
OnItemUpdated="deptsView_ItemUpdated"
OnPagePropertiesChanged="deptsView_PagePropertiesChanged">
<LayoutTemplate>
> runat="server" id="tblProducts">
<tr id="row1" runat="server" class="header">
<th id="header2" runat="server">Name</th>
<th id="header3" runat="server">Group Name</th>
<th id="header1" runat="server">Action</th>
</tr>
<tr runat="server" id="itemPlaceholder" />
</table>
<asp:DataPager runat="server" ID="deptsDataPager"
PageSize="3"> PageSize="3">
<Fields>
<asp:NextPreviousPagerField ShowFirstPageButton="True"
ShowLastPageButton="True" FirstPageText="|< ShowLastPageButton="True" FirstPageText="|<< "
LastPageText=" >>|" NextPageText=" >"
PreviousPageText=" <" />
</Fields>
</asp:DataPager>
</LayoutTemplate>
<ItemTemplate>
<tr id="row2" runat="server">
<td>
<asp:Label ID="lblName" runat="Server"
Text='< Text='<%#Eval("Name") %>' />
</td>
<td valign="top">
<asp:Label ID="lblGroupName" runat="Server"
Text='< Text='<%#Eval("GroupName") %>' />
</td>
<td>
<asp:LinkButton ID="btnEdit" runat="Server" Text="Edit"
CommandName="Edit" /> CommandName="Edit" />
</td>
</tr>
</ItemTemplate>
<EditItemTemplate>
<tr style="background-color: #ADD8E6">
<td>
<asp:TextBox ID="txtName" runat="server"
Text='< Text='<%# Bind("Name") %>'
MaxLength="50" /><br />
</td>
<td>
<asp:TextBox ID="txtGroupName" runat="server" Text='<%#
Bind("GroupName") %>' MaxLength="50" /><br />
</td>
<td>
<asp:LinkButton ID="btnUpdate" runat="server"
CommandName="Update" Text="Update" /> CommandName="Update" Text="Update" />
<asp:LinkButton ID="btnCancel" runat="server"
CommandName="Cancel" Text="Cancel" /> CommandName="Cancel" Text="Cancel" />
</td>
</tr>
</EditItemTemplate>
</asp:ListView>
<asp:SqlDataSource ID="deptSource" runat="server"
ConnectionString="< ConnectionString="<%$ ConnectionStrings:AdventureWorks %>"
SelectCommand="SELECT [DepartmentID],[Name],[GroupName] FROM
HumanResources.Department" UpdateCommand="UPDATE
HumanResources.Department SET Name = @Name,
GroupName = @GroupName WHERE DepartmentID = @DepartmentID">
</asp:SqlDataSource>
<br /><br />
<asp:Label runat="server" ID="lblResult" Text=""
Font-Bold="true" /> Font-Bold="true" />
</div>
</form>
</body>
</html>
清单2的代码说明了如何使用EditItemTemplate组件在编辑模式下生成内容，然后通过SqlDataSource更新数据库
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