DataGridPagerStyle.Visible-Eigenschaft

Artikel
08/20/2007

Ruft einen Wert ab, der angibt, ob der Pager im DataGrid-Steuerelement angezeigt wird, oder legt diesen fest.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

Syntax

'Declaration
Public Property Visible As Boolean
'Usage
Dim instance As DataGridPagerStyle
Dim value As Boolean

value = instance.Visible

instance.Visible = value

public bool Visible { get; set; }

public:
property bool Visible {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_Visible ()

/** @property */
public void set_Visible (boolean value)

public function get Visible () : boolean

public function set Visible (value : boolean)

Eigenschaftenwert

true zum Anzeigen des Pagers, andernfalls false. Der Standardwert ist true.

Hinweise

Mithilfe der Visible-Eigenschaft können Sie angeben, ob der Pager im DataGrid-Steuerelement angezeigt werden soll.

Beispiel

Im folgenden Codebeispiel wird veranschaulicht, wie mit der Visible-Eigenschaft das Pager-Element im DataGrid-Steuerelement angezeigt und ausgeblendet wird.

<%@ Page Language="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<html>
   <script language="VB" runat="server">
     
    Function CreateDataSource() As ICollection
        Dim dt As New DataTable()
        Dim dr As DataRow
        
        dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32)))
        dt.Columns.Add(New DataColumn("StringValue", GetType(String)))
        dt.Columns.Add(New DataColumn("DateTimeValue", GetType(String)))
        dt.Columns.Add(New DataColumn("BoolValue", GetType(Boolean)))
        
        Dim i As Integer
        For i = 0 To 99
            dr = dt.NewRow()
            
            dr(0) = i
            dr(1) = "Item " & i.ToString()
            dr(2) = DateTime.Now.ToShortDateString()
            If i Mod 2 <> 0 Then
                dr(3) = True
            Else
                dr(3) = False
            End If
            
            dt.Rows.Add(dr)
        Next i
        
        Dim dv As New DataView(dt)
        Return dv
    End Function 'CreateDataSource

    Sub Page_Load(sender As Object, e As EventArgs)
        If chk1.Checked Then
            MyDataGrid.PagerStyle.Visible = True
        Else
            MyDataGrid.PagerStyle.Visible = False
        End If 
        BindGrid()
    End Sub 'Page_Load

    Sub MyDataGrid_Page(sender As Object, e As DataGridPageChangedEventArgs)
        MyDataGrid.CurrentPageIndex = e.NewPageIndex
        BindGrid()
    End Sub 'MyDataGrid_Page

    Sub BindGrid()
        MyDataGrid.DataSource = CreateDataSource()
        MyDataGrid.DataBind()
        ShowStats()
    End Sub 'BindGrid

    Sub ShowStats()
        lblEnabled.Text = "AllowPaging is " & MyDataGrid.AllowPaging
        lblCurrentIndex.Text = "CurrentPageIndex is " & MyDataGrid.CurrentPageIndex
        lblPageCount.Text = "PageCount is " & MyDataGrid.PageCount
        lblPageSize.Text = "PageSize is " & MyDataGrid.PageSize
    End Sub 'ShowStats 
   </script>
 
<body>
 
   <h3>Paging with DataGrid</h3>
 
   <form runat=server>
 
      <asp:DataGrid id="MyDataGrid" runat="server"
           AllowPaging="True"
           PageSize="10"
           PagerStyle-Mode="NumericPages"
           PagerStyle-HorizontalAlign="Right"
           OnPageIndexChanged="MyDataGrid_Page"
           BorderColor="black"
           BorderWidth="1"
           GridLines="Both"
           CellPadding="3"
           CellSpacing="0"
           Font-Name="Verdana"
           Font-Size="8pt"
           HeaderStyle-BackColor="#aaaadd"
           AlternatingItemStyle-BackColor="#eeeeee"/>
 
      <p>
 
      <asp:Checkbox id="chk1" runat="server"
           Text="Show pager"
           Font-Name="Verdana"
           Font-Size="8pt"
           AutoPostBack="true"/>
 
      <p>
 
      <table bgcolor="#eeeeee" cellpadding="6">
         <tr>
            <td nowrap>
               
 
                  <asp:Label id="lblEnabled" 
                       runat="server"/><br>
                  <asp:Label id="lblCurrentIndex" 
                       runat="server"/><br>
                  <asp:Label id="lblPageCount" 
                       runat="server"/><br>
                  <asp:Label id="lblPageSize" 
                       runat="server"/><br>
 
               
            </td>
         </tr>
      </table>
 
   </form>
 
</body>
</html>

<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<html>
   <script language="C#" runat="server">
 
      ICollection CreateDataSource() 
      {
         DataTable dt = new DataTable();
         DataRow dr;
 
         dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
         dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
         dt.Columns.Add(new DataColumn("DateTimeValue", typeof(string)));
         dt.Columns.Add(new DataColumn("BoolValue", typeof(bool)));
 
         for (int i = 0; i < 100; i++) 
         {
            dr = dt.NewRow();
 
            dr[0] = i;
            dr[1] = "Item " + i.ToString();
            dr[2] = DateTime.Now.ToShortDateString();
            dr[3] = (i % 2 != 0) ? true : false;
  
            dt.Rows.Add(dr);
         }
 
         DataView dv = new DataView(dt);
         return dv;
      }
  
      void Page_Load(Object sender, EventArgs e) 
      {
         if (chk1.Checked)
            MyDataGrid.PagerStyle.Visible = true;
         else 
            MyDataGrid.PagerStyle.Visible = false;
 
         BindGrid();
      }
 
      void MyDataGrid_Page(Object sender, DataGridPageChangedEventArgs e) 
      {
         MyDataGrid.CurrentPageIndex = e.NewPageIndex;
         BindGrid();
      }
 
      void BindGrid() 
      {
         MyDataGrid.DataSource = CreateDataSource();
         MyDataGrid.DataBind();
         ShowStats();
      }
 
      void ShowStats() 
      {
         lblEnabled.Text = "AllowPaging is " + MyDataGrid.AllowPaging;
         lblCurrentIndex.Text = "CurrentPageIndex is " + MyDataGrid.CurrentPageIndex;
         lblPageCount.Text = "PageCount is " + MyDataGrid.PageCount;
         lblPageSize.Text = "PageSize is " + MyDataGrid.PageSize;
      }
 
 
   </script>
 
<body>
 
   <h3>Paging with DataGrid</h3>
 
   <form runat=server>
 
      <asp:DataGrid id="MyDataGrid" runat="server"
           AllowPaging="True"
           PageSize="10"
           PagerStyle-Mode="NumericPages"
           PagerStyle-HorizontalAlign="Right"
           OnPageIndexChanged="MyDataGrid_Page"
           BorderColor="black"
           BorderWidth="1"
           GridLines="Both"
           CellPadding="3"
           CellSpacing="0"
           Font-Name="Verdana"
           Font-Size="8pt"
           HeaderStyle-BackColor="#aaaadd"
           AlternatingItemStyle-BackColor="#eeeeee"/>
 
      <p>
 
      <asp:Checkbox id="chk1" runat="server"
           Text="Show pager"
           Font-Name="Verdana"
           Font-Size="8pt"
           AutoPostBack="true"/>
 
      <p>
 
      <table bgcolor="#eeeeee" cellpadding="6">
         <tr>
            <td nowrap>
               
 
                  <asp:Label id="lblEnabled" 
                       runat="server"/><br>
                  <asp:Label id="lblCurrentIndex" 
                       runat="server"/><br>
                  <asp:Label id="lblPageCount" 
                       runat="server"/><br>
                  <asp:Label id="lblPageSize" 
                       runat="server"/><br>
 
               
            </td>
         </tr>
      </table>
 
   </form>
 
</body>
</html>

Plattformen

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

DataGridPagerStyle-Klasse
DataGridPagerStyle-Member
System.Web.UI.WebControls-Namespace
DataGrid-Klasse

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