DataGridPagerStyle.Visible Vlastnost

Reference

Definice

Obor názvů:: System.Web.UI.WebControls

Sestavení:: System.Web.dll

Důležité

Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.

Získá nebo nastaví hodnotu označující, zda je pager zobrazen v ovládacím DataGrid prvku.

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

Hodnota vlastnosti

Boolean

truek zobrazení stránkovače; v opačném případě . false Výchozí hodnota je true.

Atributy: BindableAttribute

Příklady

Následující příklad kódu ukazuje, jak použít Visible vlastnost k zobrazení a skrytí prvku pager v ovládacím DataGrid prvku.

<%@ 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>

Poznámky

Visible Pomocí vlastnosti určete, zda je pager zobrazen v ovládacím DataGrid prvku.

Platí pro

Viz také

DataGrid

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