DataGridPagerStyle.Visible Eigenschap

Definitie

Naamruimte:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Belangrijk

Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.

Hiermee wordt een waarde opgehaald of ingesteld die aangeeft of de pager wordt weergegeven in het DataGrid besturingselement.

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

[System.ComponentModel.Bindable(true)]
public bool Visible { get; set; }

public bool Visible { get; set; }

[<System.ComponentModel.Bindable(true)>]
member this.Visible : bool with get, set

member this.Visible : bool with get, set

Public Property Visible As Boolean

Waarde van eigenschap

Boolean

true om de pager weer te geven; anders, false. De standaardwaarde is true.

Kenmerken: BindableAttribute

Voorbeelden

In het volgende codevoorbeeld ziet u hoe u de Visible eigenschap gebruikt om het pager-element in het DataGrid besturingselement weer te geven en te verbergen.

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script 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>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Paging with DataGrid</title>
</head>
<body>
   <form id="form1" runat="server">
   <div>

   <h3>Paging with DataGrid</h3>

   <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-Names="Verdana"
       Font-Size="8pt"
       HeaderStyle-BackColor="#aaaadd"
       AlternatingItemStyle-BackColor="#eeeeee"/>
 
   <p>
       <asp:Checkbox id="chk1" runat="server"
           Text="Show pager"
           Font-Names="Verdana"
           Font-Size="8pt"
           AutoPostBack="true"/>
   </p>

   <table style="background-color: #eeeeee" cellpadding="6">
       <tr>
           <td style="white-space: 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>

   </div>
   </form>
</body>
</html>

<%@ Page Language="VB" %>
<%@ Import Namespace="System.Data" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script 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(ByVal sender As Object, _
        ByVal 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(ByVal sender As Object, _
        ByVal 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>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Paging with DataGrid</title>
</head>
<body>
   <form id="form1" runat="server">
   <div>

   <h3>Paging with DataGrid</h3>
 
      <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-Names="Verdana"
          Font-Size="8pt"
          HeaderStyle-BackColor="#aaaadd"
          AlternatingItemStyle-BackColor="#eeeeee" />
 
      <p>
          <asp:Checkbox id="chk1" runat="server"
              Text="Show pager"
              Font-Names="Verdana"
              Font-Size="8pt"
              AutoPostBack="true" />
      </p>
 
      <table style="background-color: #eeeeee" cellpadding="6">
          <tr>
              <td style="white-space: 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>

   </div>
   </form>
</body>
</html>

Opmerkingen

Gebruik de Visible eigenschap om op te geven of de pager wordt weergegeven in het DataGrid besturingselement.

Van toepassing op

Zie ook

DataGrid

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