DataGrid.PageCount Property

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

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Gets the total number of pages required to display the items in the DataGrid control.

public:
 property int PageCount { int get(); };

[System.ComponentModel.Browsable(false)]
public int PageCount { get; }

[<System.ComponentModel.Browsable(false)>]
member this.PageCount : int

Public ReadOnly Property PageCount As Integer

Property Value

Int32

The total number of pages required to display the items in the DataGrid control.

Attributes: BrowsableAttribute

Examples

The following code example demonstrates how to use the PageCount property to determine the number of pages required to display the items in the DataGrid control.

<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
 <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.Mode = PagerMode.NumericPages;
       else 
          MyDataGrid.PagerStyle.Mode = PagerMode.NextPrev;
 
       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>
 
 <head runat="server">
    <title>DataGrid Paging Example</title>
</head>
<body>
 
    <h3>DataGrid Paging Example</h3>
 
    <form id="form1" runat="server">
 
       <asp:DataGrid id="MyDataGrid" runat="server"
            AllowPaging="True"
            PageSize="10"
            OnPageIndexChanged="MyDataGrid_Page"
            BorderColor="black"
            BorderWidth="1"
            GridLines="Both"
            CellPadding="3"
            CellSpacing="0"
            Font-Names="Verdana"
            Font-Size="8pt">

            <PagerStyle Mode="NumericPages"
                        HorizontalAlign="Right">
            </PagerStyle>


            <HeaderStyle BackColor="#aaaadd">
            </HeaderStyle>

            <AlternatingItemStyle BackColor="#eeeeee">
            </AlternatingItemStyle>

       </asp:DataGrid>
 
       <br />
 
       <asp:Checkbox id="chk1" runat="server"
            Text="Show numeric page navigation buttons"
            Font-Names="Verdana"
            Font-Size="8pt"
            AutoPostBack="true"/>
 
       <br />
 
       <table style="background-color:#eeeeee; padding:6">
          <tr>
             <td style="display:inline">
                
 
                   <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="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
 <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.Mode = PagerMode.NumericPages
    Else
        MyDataGrid.PagerStyle.Mode = PagerMode.NextPrev
    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>
 
 <head runat="server">
    <title>DataGrid Paging Example</title>
</head>
<body>
 
    <h3>DataGrid Paging Example</h3>
 
    <form id="form1" runat="server">
 
       <asp:DataGrid id="MyDataGrid" runat="server"
            AllowPaging="True"
            PageSize="10"
            OnPageIndexChanged="MyDataGrid_Page"
            BorderColor="black"
            BorderWidth="1"
            GridLines="Both"
            CellPadding="3"
            CellSpacing="0"
            Font-Names="Verdana"
            Font-Size="8pt">

            <PagerStyle Mode="NumericPages"
                        HorizontalAlign="Right">
            </PagerStyle>


            <HeaderStyle BackColor="#aaaadd">
            </HeaderStyle>

            <AlternatingItemStyle BackColor="#eeeeee">
            </AlternatingItemStyle>

       </asp:DataGrid>
 
       <br />
 
       <asp:Checkbox id="chk1" runat="server"
            Text="Show numeric page navigation buttons"
            Font-Names="Verdana"
            Font-Size="8pt"
            AutoPostBack="true"/>
 
       <br />
 
       <table style="background-color:#eeeeee; padding:6">
          <tr>
             <td style="display:inline">
                
 
                   <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>

Remarks

Use this property to programmatically determine the number of pages required to display the items in the DataGrid control. This property is only used when the AllowPaging property is set to true.

Applies to

Dela via