PrintPageEventArgs.HasMorePages 属性
定义
获取或设置一个值,该值指示是否打印附加页。Gets or sets a value indicating whether an additional page should be printed.
public:
property bool HasMorePages { bool get(); void set(bool value); };
public bool HasMorePages { get; set; }
member this.HasMorePages : bool with get, set
Public Property HasMorePages As Boolean
属性值
若应打印附加页,则为 true;否则为 false。true if an additional page should be printed; otherwise, false. 默认值为 false。The default is false.
示例
下面的代码示例假定 Button printButton PrintDocument pd 已在上创建了一个名为的和名为的 Form 。The following code example assumes a Button named printButton and a PrintDocument named pd have been created on a Form. 请确保 Click 的事件与该 Button 方法相关联 printButton_Click ,并且的事件与 PrintPage PrintDocument 示例中的方法相关联 pd_PrintPage 。Make sure the Click event for the Button is associated with the printButton_Click method and the PrintPage event of the PrintDocument is associated with the pd_PrintPage method in the example. printButton_Click示例中的方法调用 Print 引发事件的方法 PrintPage ,并打印方法中指定的 .bmp 文件 pd_PrintPage 。The printButton_Click method from the example calls the Print method raising the PrintPage event, and prints the .bmp file specified in the pd_PrintPage method. 若要运行此示例,请更改要打印的位图的路径。To run this example, change the path to the bitmap you want to print.
在 System.Drawing 此示例中使用、 System.Drawing.Printing 和 System.Windows.Forms 命名空间。Use the System.Drawing, System.Drawing.Printing, and System.Windows.Forms namespaces for this example.
private:
// Specifies what happens when the user clicks the Button.
void printButton_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
{
try
{
pd->Print();
}
catch ( Exception^ ex )
{
MessageBox::Show( "An error occurred while printing", ex->ToString() );
}
}
// Specifies what happens when the PrintPage event is raised.
void pd_PrintPage( Object^ /*sender*/, PrintPageEventArgs^ ev )
{
// Draw a picture.
ev->Graphics->DrawImage( Image::FromFile( "C:\\My Folder\\MyFile.bmp" ),
ev->Graphics->VisibleClipBounds );
// Indicate that this is the last page to print.
ev->HasMorePages = false;
}
// Specifies what happens when the user clicks the Button.
private void printButton_Click(object sender, EventArgs e)
{
try
{
// Assumes the default printer.
pd.Print();
}
catch(Exception ex)
{
MessageBox.Show("An error occurred while printing", ex.ToString());
}
}
// Specifies what happens when the PrintPage event is raised.
private void pd_PrintPage(object sender, PrintPageEventArgs ev)
{
// Draw a picture.
ev.Graphics.DrawImage(Image.FromFile("C:\\My Folder\\MyFile.bmp"), ev.Graphics.VisibleClipBounds);
// Indicate that this is the last page to print.
ev.HasMorePages = false;
}
' Specifies what happens when the user clicks the Button.
Private Sub printButton_Click(sender As Object, e As EventArgs) _
Handles printButton.Click
Try
pd.Print()
Catch ex As Exception
MessageBox.Show("An error occurred while printing", _
ex.ToString())
End Try
End Sub
' Specifies what happens when the PrintPage event is raised.
Private Sub pd_PrintPage(sender As Object, ev As PrintPageEventArgs) _
Handles pd.PrintPage
' Draw a picture.
ev.Graphics.DrawImage(Image.FromFile("C:\My Folder\MyFile.bmp"), _
ev.Graphics.VisibleClipBounds)
' Indicate that this is the last page to print.
ev.HasMorePages = False
End Sub
有关演示如何使用的另一个示例 HasMorePages ,请参阅 如何:在 Windows 窗体中打印多页文本文件For another example that shows how to use HasMorePages, see How to: Print a Multi-Page Text File in Windows Forms