TemplatePagerField.PagerCommand Ereignis
Definition
Wichtig
Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.
Tritt auf, wenn auf eine Schaltfläche in einem TemplatePagerField Objekt geklickt wird.
public:
event EventHandler<System::Web::UI::WebControls::DataPagerCommandEventArgs ^> ^ PagerCommand;public event EventHandler<System.Web.UI.WebControls.DataPagerCommandEventArgs> PagerCommand;member this.PagerCommand : EventHandler<System.Web.UI.WebControls.DataPagerCommandEventArgs> Public Custom Event PagerCommand As EventHandler(Of DataPagerCommandEventArgs) Ereignistyp
Beispiele
Das folgende Beispiel zeigt, wie Sie das PagerCommand Ereignis verwenden, um eine andere Aktion auszuführen, je nachdem, auf welche Schaltfläche in einem TemplatePagerField Objekt geklickt wurde.
<%@ Page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
// <Snippet2>
protected void TemplatePagerField_OnPagerCommand(object sender, DataPagerCommandEventArgs e)
{
// Check which button raised the event
switch(e.CommandName)
{
case "Next":
int newIndex = e.Item.Pager.StartRowIndex + e.Item.Pager.PageSize;
if (newIndex <= e.TotalRowCount)
{
e.NewStartRowIndex = newIndex;
e.NewMaximumRows = e.Item.Pager.MaximumRows;
}
break;
case "Previous":
e.NewStartRowIndex = e.Item.Pager.StartRowIndex - e.Item.Pager.PageSize;
e.NewMaximumRows = e.Item.Pager.MaximumRows;
break;
case "First":
e.NewStartRowIndex = 0;
e.NewMaximumRows = e.Item.Pager.MaximumRows;
break;
}
}
// </Snippet2>
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>TemplatePagerField.OnPagerCommand Example</title>
<style type="text/css">
body
{
text-align: center;
font: 12px Arial, Helvetica, sans-serif;
}
.item
{
border: solid 1px #2F4F4F;
background: #E6E6FA;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<h3>TemplatePagerField.OnPagerCommand Example</h3>
<asp:ListView ID="StoresListView"
DataSourceID="StoresDataSource"
runat="server">
<LayoutTemplate>
<table width="350" runat="server" id="tblStore">
<tr runat="server">
<th runat="server">ID</th>
<th runat="server">Store Name</th>
</tr>
<tr id="itemPlaceholder" runat="server">
</tr>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr runat="server">
<td class="item">
<asp:Label ID="IDLabel" runat="server" Text='<%#Eval("CustomerID") %>' />
</td>
<td align="left" class="item">
<asp:Label ID="NameLabel" runat="server" Text='<%#Eval("Name")%>' />
</td>
</tr>
</ItemTemplate>
</asp:ListView>
<br />
<asp:DataPager runat="server"
ID="ContactsDataPager"
PageSize="30"
PagedControlID="StoresListView">
<Fields>
<asp:TemplatePagerField OnPagerCommand="TemplatePagerField_OnPagerCommand">
<PagerTemplate>
<asp:LinkButton ID="FirstButton" runat="server" CommandName="First"
Text="<<" Enabled='<%# Container.StartRowIndex > 0 %>' />
<asp:LinkButton ID="PreviousButton" runat="server" CommandName="Previous"
Text='<%# (Container.StartRowIndex - Container.PageSize + 1) + " - " + (Container.StartRowIndex) %>'
Visible='<%# Container.StartRowIndex > 0 %>' />
<asp:Label ID="CurrentPageLabel" runat="server"
Text='<%# (Container.StartRowIndex + 1) + "-" + (Container.StartRowIndex + Container.PageSize > Container.TotalRowCount ? Container.TotalRowCount : Container.StartRowIndex + Container.PageSize) %>' />
<asp:LinkButton ID="NextButton" runat="server" CommandName="Next"
Text='<%# (Container.StartRowIndex + Container.PageSize + 1) + " - " + (Container.StartRowIndex + Container.PageSize*2 > Container.TotalRowCount ? Container.TotalRowCount : Container.StartRowIndex + Container.PageSize*2) %>'
Visible='<%# (Container.StartRowIndex + Container.PageSize) < Container.TotalRowCount %>' />
</PagerTemplate>
</asp:TemplatePagerField>
</Fields>
</asp:DataPager>
<!-- 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="StoresDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
SelectCommand="SELECT [CustomerID], [Name] FROM Sales.Store ORDER BY [Name]">
</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">
<script runat="server">
' <Snippet2>
Protected Sub TemplatePagerField_OnPagerCommand(ByVal sender As Object, _
ByVal e As DataPagerCommandEventArgs)
' Check which button raised the event
Select Case e.CommandName
Case "Next"
Dim newIndex As Integer = e.Item.Pager.StartRowIndex + e.Item.Pager.PageSize
If newIndex <= e.TotalRowCount Then
e.NewStartRowIndex = newIndex
e.NewMaximumRows = e.Item.Pager.MaximumRows
End If
Case "Previous"
e.NewStartRowIndex = e.Item.Pager.StartRowIndex - e.Item.Pager.PageSize
e.NewMaximumRows = e.Item.Pager.MaximumRows
Case "First"
e.NewStartRowIndex = 0
e.NewMaximumRows = e.Item.Pager.MaximumRows
End Select
End Sub
' </Snippet2>
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>TemplatePagerField.OnPagerCommand Example</title>
<style type="text/css">
body
{
text-align: center;
font: 12px Arial, Helvetica, sans-serif;
}
.item
{
border: solid 1px #2F4F4F;
background: #E6E6FA;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<h3>TemplatePagerField.OnPagerCommand Example</h3>
<asp:ListView ID="StoresListView"
DataSourceID="StoresDataSource"
runat="server">
<LayoutTemplate>
<table width="350" runat="server" id="tblStore">
<tr runat="server">
<th runat="server">ID</th>
<th runat="server">Store Name</th>
</tr>
<tr id="itemPlaceholder" runat="server">
</tr>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr runat="server">
<td class="item">
<asp:Label ID="IDLabel" runat="server" Text='<%#Eval("CustomerID") %>' />
</td>
<td align="left" class="item">
<asp:Label ID="NameLabel" runat="server" Text='<%#Eval("Name")%>' />
</td>
</tr>
</ItemTemplate>
</asp:ListView>
<br />
<asp:DataPager runat="server"
ID="ContactsDataPager"
PageSize="30"
PagedControlID="StoresListView">
<Fields>
<asp:TemplatePagerField OnPagerCommand="TemplatePagerField_OnPagerCommand">
<PagerTemplate>
<asp:LinkButton ID="FirstButton" runat="server" CommandName="First"
Text="<<" Enabled='<%# Container.StartRowIndex > 0 %>' />
<asp:LinkButton ID="PreviousButton" runat="server" CommandName="Previous"
Text='<%# (Container.StartRowIndex - Container.PageSize + 1) & " - " & (Container.StartRowIndex) %>'
Visible='<%# Container.StartRowIndex > 0 %>' />
<asp:Label ID="CurrentPageLabel" runat="server"
Text='<%# (Container.StartRowIndex + 1) & "-" & (IIf(Container.StartRowIndex + Container.PageSize > Container.TotalRowCount, Container.TotalRowCount, Container.StartRowIndex + Container.PageSize)) %>' />
<asp:LinkButton ID="NextButton" runat="server" CommandName="Next"
Text='<%# (Container.StartRowIndex + Container.PageSize + 1) & " - " & (IIf(Container.StartRowIndex + Container.PageSize*2 > Container.TotalRowCount, Container.TotalRowCount, Container.StartRowIndex + Container.PageSize*2)) %>'
Visible='<%# (Container.StartRowIndex + Container.PageSize) < Container.TotalRowCount %>' />
</PagerTemplate>
</asp:TemplatePagerField>
</Fields>
</asp:DataPager>
<!-- 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="StoresDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
SelectCommand="SELECT [CustomerID], [Name] FROM Sales.Store ORDER BY [Name]">
</asp:SqlDataSource>
</form>
</body>
</html>
Hinweise
Das PagerCommand Ereignis wird ausgelöst, wenn auf eine Schaltfläche in einem TemplatePagerField Objekt geklickt wird. Auf diese Weise können Sie immer dann eine benutzerdefinierte Routine ausführen, wenn dieses Ereignis eintritt.
