Image.RotateFlip 方法

此方法旋转、翻转或者同时旋转和翻转 Image。

**命名空间:**System.Drawing
**程序集:**System.Drawing（在 system.drawing.dll 中）

语法

声明
Public Sub RotateFlip ( _
    rotateFlipType As RotateFlipType _
)
用法
Dim instance As Image
Dim rotateFlipType As RotateFlipType

instance.RotateFlip(rotateFlipType)

public void RotateFlip (
    RotateFlipType rotateFlipType
)

public:
void RotateFlip (
    RotateFlipType rotateFlipType
)

public void RotateFlip (
    RotateFlipType rotateFlipType
)

public function RotateFlip (
    rotateFlipType : RotateFlipType
)

参数

• rotateFlipType
  RotateFlipType 成员，指定要应用于该图像的旋转和翻转的类型。

返回值

此方法不返回值。

示例

下面的代码示例演示如何设置 Image 的 RotateFlip 属性和 RotateFlipType 枚举。

此示例旨在用于包含名为 PictureBox1 的 PictureBox 和名为 Button1 的按钮的 Windows 窗体。将该代码粘贴到一个窗体中，在该窗体的构造函数中调用 InitializeBitmap，并将 Button1_Click 与按钮的 Click 事件关联。请确保位图的文件路径在您的系统上是有效的。

Dim bitmap1 As Bitmap

Private Sub InitializeBitmap()
    Try
        bitmap1 = CType(Bitmap.FromFile("C:\Documents and Settings\All Users\" _
            & "Documents\My Music\music.bmp"), Bitmap)
        PictureBox1.SizeMode = PictureBoxSizeMode.AutoSize
        PictureBox1.Image = bitmap1
    Catch ex As System.IO.FileNotFoundException
        MessageBox.Show("There was an error. Check the path to the bitmap.")
    End Try


End Sub

Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click

    If Not bitmap1 Is Nothing Then
        bitmap1.RotateFlip(RotateFlipType.Rotate180FlipY)
        PictureBox1.Image = bitmap1
    End If

End Sub

Bitmap bitmap1;

private void InitializeBitmap()
{
    try
    {
        bitmap1 = (Bitmap)Bitmap.FromFile(@"C:\Documents and Settings\" + 
            @"All Users\Documents\My Music\music.bmp");
        PictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
        PictureBox1.Image = bitmap1;
    }
    catch(System.IO.FileNotFoundException)
    {
        MessageBox.Show("There was an error." + 
            "Check the path to the bitmap.");
    }


}

private void Button1_Click(System.Object sender, System.EventArgs e)
{

    if (bitmap1 != null)
    {
        bitmap1.RotateFlip(RotateFlipType.Rotate180FlipY);
        PictureBox1.Image = bitmap1;
    }

}

Bitmap^ bitmap1;
void InitializeBitmap()
{
   try
   {
      bitmap1 = dynamic_cast<Bitmap^>(Bitmap::FromFile( "C:\\Documents and Settings\\"
      "All Users\\Documents\\My Music\\music.bmp" ));
      PictureBox1->SizeMode = PictureBoxSizeMode::AutoSize;
      PictureBox1->Image = bitmap1;
   }
   catch ( System::IO::FileNotFoundException^ ) 
   {
      MessageBox::Show( "There was an error."
      "Check the path to the bitmap." );
   }

}

void Button1_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
   if ( bitmap1 != nullptr )
   {
      bitmap1->RotateFlip( RotateFlipType::Rotate180FlipY );
      PictureBox1->Image = bitmap1;
   }
}

private Bitmap bitmap1;

private void InitializeBitmap()
{
    try {
        bitmap1 = ((Bitmap)(Bitmap.FromFile(("C:\\Documents and Settings\\"
            + "All Users\\Documents\\My Music\\music.bmp"))));
        pictureBox1.set_SizeMode(PictureBoxSizeMode.AutoSize);
        pictureBox1.set_Image(bitmap1);
    }
    catch (System.IO.FileNotFoundException exp) {
        MessageBox.Show(("There was an error." 
            + "Check the path to the bitmap."));
    }
} //InitializeBitmap

private void button1_Click(Object sender, System.EventArgs e)
{
    if (bitmap1 != null) {
        bitmap1.RotateFlip(RotateFlipType.Rotate180FlipY);
        pictureBox1.set_Image(bitmap1);
    }
} //button1_Click

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

Image 类
Image 成员
System.Drawing 命名空间