DataPagerFieldItem.Pager 屬性

定義

命名空間:

System.Web.UI.WebControls

組件:

System.Web.Extensions.dll

取得頁面巡覽區控制項，這個控制項包含頁面巡覽區欄位物件。

public:
 property System::Web::UI::WebControls::DataPager ^ Pager { System::Web::UI::WebControls::DataPager ^ get(); };

public System.Web.UI.WebControls.DataPager Pager { get; }

member this.Pager : System.Web.UI.WebControls.DataPager

Public ReadOnly Property Pager As DataPager

屬性值

DataPager

頁面巡覽區控制項。

範例

下列範例示範如何在 事件的處理程式TemplatePagerField.PagerCommand中使用 Pager 屬性來存取 控件的屬性DataPager。 此程式代碼範例是針對 類別提供的較大範例的 DataPagerCommandEventArgs 一部分。

protected void TemplatePagerField_OnPagerCommand(object sender, DataPagerCommandEventArgs e)
{     
    // Get the new page number 
    TextBox PageNumberTextBox = (TextBox)e.Item.FindControl("PageNumberTextBox");
    int newPageNumber = -1;
    try
    {
      newPageNumber = Convert.ToInt32(PageNumberTextBox.Text.Trim());
    }
    catch (FormatException)
    {
      Message.Text = "Invalid page number.";
      return;
    }
    catch (OverflowException)
    {
      Message.Text = "Invalid page number.";
      return;
    }

    int newIndex = (newPageNumber - 1) * e.Item.Pager.PageSize;
    //Verify if the new index is valid
    if (newIndex >= 0 && newIndex <= e.TotalRowCount)
    {
      //Set the new start index and maximum rows
      e.NewStartRowIndex = newIndex;
      e.NewMaximumRows = e.Item.Pager.MaximumRows;
    }
    else
      Message.Text = "Invalid page number.";
}

Protected Sub TemplatePagerField_OnPagerCommand(ByVal sender As Object, _
  ByVal e As DataPagerCommandEventArgs)
  
  ' Get the new page number 
  Dim PageNumberTextBox As TextBox = _
    CType(e.Item.FindControl("PageNumberTextBox"), TextBox)
  
  Dim newPageNumber As Integer = -1
  Try
    newPageNumber = Convert.ToInt32(PageNumberTextBox.Text.Trim())
  Catch fex As FormatException
    Message.Text = "Invalid page number."
    Return
  Catch oex As OverflowException
    Message.Text = "Invalid page number."
    Return
  End Try
      
  Dim newIndex As Integer = _
    (newPageNumber - 1) * e.Item.Pager.PageSize
  
  'Verify if the new index is valid
  If newIndex >= 0 AndAlso newIndex <= e.TotalRowCount Then
    'Set the new start index and maximum rows
    e.NewStartRowIndex = newIndex
    e.NewMaximumRows = e.Item.Pager.MaximumRows
  Else
    Message.Text = "Invalid page number."
  End If
  
End Sub

備註

Pager使用 屬性來擷DataPager取 控件。 這個屬性通常用來存取 事件事件處理程式 TemplatePagerField.PagerCommand 中控件的屬性。

另請參閱

• DataPager
• PagerCommand
• ListView 網頁伺服器控制件