GridView..::.PageIndex 属性

最新推荐文章于 2023-05-26 17:14:17 发布

ddm13142005

最新推荐文章于 2023-05-26 17:14:17 发布

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文章标签： xhtml c# c/c++

原文链接：http://www.cnblogs.com/zhchongyao/archive/2009/08/11/1543601.html

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GridView . . :: .PageIndex 属性

<BrowsableAttribute(True)> _
Public Overridable Property PageIndex As Integer

Visual Basic (用法)

Dim instance As GridView
Dim value As Integer

value = instance.PageIndex

instance.PageIndex = value

[BrowsableAttribute(true)]
public virtual int PageIndex { get; set; }

Visual C++

[BrowsableAttribute(true)]
public:
virtual property int PageIndex {
    int get ();
    void set (int value);
}

/** @property */
/** @attribute BrowsableAttribute(true) */
public int get_PageIndex()
/** @property */
/** @attribute BrowsableAttribute(true) */
public  void set_PageIndex(int value)

JScript

public function get PageIndex () : int
public function set PageIndex (value : int)

ASP.NET

属性值

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat= "server">

Sub PageDropDownList_SelectedIndexChanged( ByVal sender As Object, ByVal e As EventArgs)

    ' Retrieve the pager row.
    Dim pagerRow As GridViewRow = CustomersGridView.BottomPagerRow

    ' Retrieve the PageDropDownList DropDownList from the bottom pager row.
    Dim pageList As DropDownList = CType(pagerRow.Cells(0).FindControl( "PageDropDownList"), DropDownList)

    ' Set the PageIndex property to display that page selected by the user.
    CustomersGridView.PageIndex = pageList.SelectedIndex

End Sub

Sub CustomersGridView_DataBound( ByVal sender As Object, ByVal e As EventArgs)

    ' Retrieve the pager row.
    Dim pagerRow As GridViewRow = CustomersGridView.BottomPagerRow

    ' Retrieve the DropDownList and Label controls from the row.
    Dim pageList As DropDownList = CType(pagerRow.Cells(0).FindControl( "PageDropDownList"), DropDownList)
    Dim pageLabel As Label = CType(pagerRow.Cells(0).FindControl( "CurrentPageLabel"), Label)

    If Not pageList Is Nothing Then

      ' Create the values for the DropDownList control based on
      ' the total number of pages required to display the data
      ' source.
      Dim i As Integer

      For i = 0 To CustomersGridView.PageCount - 1

        ' Create a ListItem object to represent a page.
        Dim pageNumber As Integer = i + 1
        Dim item As ListItem = New ListItem(pageNumber.ToString())

        ' If the ListItem object matches the currently selected
        ' page, flag the ListItem object as being selected. Because
        ' the DropDownList control is recreated each time the pager
        ' row gets created, this will persist the selected item in
        ' the DropDownList control.
        If i = CustomersGridView.PageIndex Then

          item.Selected = True

        End If

        ' Add the ListItem object to the Items collection of the
        ' DropDownList.
        pageList.Items.Add(item)

      Next i

    End If

    If Not pageLabel Is Nothing Then

      ' Calculate the current page number.
      Dim currentPage As Integer = CustomersGridView.PageIndex + 1

      ' Update the Label control with the current page information.
      pageLabel.Text = "Page " & currentPage.ToString() & _
          " of " & CustomersGridView.PageCount.ToString()

    End If

End Sub

</script>

<html >
<head runat= "server">
    <title>GridView PagerTemplate Example</title>
</head>
<body>
    <form id= "form1" runat= "server">

      <h3>GridView PagerTemplate Example</h3>

      <asp:gridview id= "CustomersGridView"
        datasourceid= "CustomersSqlDataSource"
        autogeneratecolumns= "true"
        allowpaging= "true"
        ondatabound= "CustomersGridView_DataBound"
        runat= "server">

        <pagerstyle forecolor= "Blue"
          backcolor= "LightBlue"/>

        <pagertemplate>

          <table width= "100%">
            <tr>
              <td style= "width:70%">

                <asp:label id= "MessageLabel"
                  forecolor= "Blue"
                  text= "Select a page:"
                  runat= "server"/>
                <asp:dropdownlist id= "PageDropDownList"
                  autopostback= "true"
                  onselectedindexchanged= "PageDropDownList_SelectedIndexChanged"
                  runat= "server"/>

              </td>

              <td style= "width:70%; text-align:right">

                <asp:label id= "CurrentPageLabel"
                  forecolor= "Blue"
                  runat= "server"/>

              </td>

            </tr>
          </table>

        </pagertemplate>

      </asp:gridview>

      
      
      
      
      <asp:sqldatasource id= "CustomersSqlDataSource"
        selectcommand= "Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring= "<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat= "server">
      </asp:sqldatasource>

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

<%@ 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">

  void PageDropDownList_SelectedIndexChanged(Object sender, EventArgs e)
  {

    // Retrieve the pager row.
    GridViewRow pagerRow = CustomersGridView.BottomPagerRow;

    // Retrieve the PageDropDownList DropDownList from the bottom pager row.
    DropDownList pageList = (DropDownList)pagerRow.Cells[0].FindControl("PageDropDownList");

    // Set the PageIndex property to display that page selected by the user.
    CustomersGridView.PageIndex = pageList.SelectedIndex;

  }

  void CustomersGridView_DataBound(Object sender, EventArgs e)
  {

    // Retrieve the pager row.
    GridViewRow pagerRow = CustomersGridView.BottomPagerRow;

    // Retrieve the DropDownList and Label controls from the row.
    DropDownList pageList = (DropDownList)pagerRow.Cells[0].FindControl("PageDropDownList");
    Label pageLabel = (Label)pagerRow.Cells[0].FindControl("CurrentPageLabel");

    if(pageList != null)
    {

      // Create the values for the DropDownList control based on 
      // the  total number of pages required to display the data
      // source.
      for(int i=0; i<CustomersGridView.PageCount; i++)
      {

        // Create a ListItem object to represent a page.
        int pageNumber = i + 1;
        ListItem item = new ListItem(pageNumber.ToString());         

        // If the ListItem object matches the currently selected
        // page, flag the ListItem object as being selected. Because
        // the DropDownList control is recreated each time the pager
        // row gets created, this will persist the selected item in
        // the DropDownList control.   
        if(i==CustomersGridView.PageIndex)
        {
          item.Selected = true;
        }

        // Add the ListItem object to the Items collection of the 
        // DropDownList.
        pageList.Items.Add(item);

      }

    }

    if(pageLabel != null)
    {

      // Calculate the current page number.
      int currentPage = CustomersGridView.PageIndex + 1;     

      // Update the Label control with the current page information.
      pageLabel.Text = "Page " + currentPage.ToString() +
        " of " + CustomersGridView.PageCount.ToString();

    }    

  }

</script>

<html  >
  <head runat="server">
    <title>GridView PagerTemplate Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>GridView PagerTemplate Example</h3>

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource"   
        autogeneratecolumns="true"
        allowpaging="true"
        ondatabound="CustomersGridView_DataBound"  
        runat="server">

        <pagerstyle forecolor="Blue"
          backcolor="LightBlue"/>

        <pagertemplate>

          <table width="100%">                    
            <tr>                        
              <td style="width:70%">

                <asp:label id="MessageLabel"
                  forecolor="Blue"
                  text="Select a page:" 
                  runat="server"/>
                <asp:dropdownlist id="PageDropDownList"
                  autopostback="true"
                  onselectedindexchanged="PageDropDownList_SelectedIndexChanged" 
                  runat="server"/>

              </td>   

              <td style="width:70%; text-align:right">

                <asp:label id="CurrentPageLabel"
                  forecolor="Blue"
                  runat="server"/>

              </td>

            </tr>                    
          </table>

        </pagertemplate> 

      </asp:gridview>

      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>

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