DataPagerFieldItem.Pager 属性

  • 参考

定义

命名空间:
System.Web.UI.WebControls
程序集:
System.Web.Extensions.dll

获取包含页导航字段对象的页导航控件。

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

属性值

DataPager

页导航控件。

示例

以下示例演示如何通过在 Pager 事件的处理程序中使用 属性来访问 DataPager 控件的属性TemplatePagerField.PagerCommand。 此代码示例是为 DataPagerCommandEventArgs 类提供的一个更大示例的一部分。

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

注解

Pager使用 属性检索DataPager控件。 此属性通常用于访问 事件的事件处理程序 TemplatePagerField.PagerCommand 中的 控件的属性。

适用于

另请参阅