Image.RotateFlip(RotateFlipType) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Rotates, flips, or rotates and flips the Image.
public:
void RotateFlip(System::Drawing::RotateFlipType rotateFlipType);public void RotateFlip (System.Drawing.RotateFlipType rotateFlipType);member this.RotateFlip : System.Drawing.RotateFlipType -> unitPublic Sub RotateFlip (rotateFlipType As RotateFlipType)Parameters
- rotateFlipType
- RotateFlipType
A RotateFlipType member that specifies the type of rotation and flip to apply to the image.
Examples
The following code example demonstrates how to call the RotateFlip method on an Image and the RotateFlipType enumeration.
This example is designed to be used with a Windows Form that contains a PictureBox named PictureBox1 and a button named Button1. Paste the code into a form, call InitializeBitmap from the form's constructor, and associate Button1_Click with the button's Click event. Ensure the file path to the bitmap is valid on your system.
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;
}
}
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;
}
}
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 bitmap1 IsNot Nothing Then
bitmap1.RotateFlip(RotateFlipType.Rotate180FlipY)
PictureBox1.Image = bitmap1
End If
End Sub
Remarks
The RotateFlip method rotates the image clockwise.
If you wish to draw on an image once it has been rotated, you should always retrieve a new graphics object from the image, otherwise an exception could occur.
