Windows Vista Forums

Image Rotate with C#

  1. #1


    Thomas Mueller Guest

    Image Rotate with C#

    Hi NG,

    how can i change the Rotate- State of an Image in C# Code? If I use the
    following code:

    try
    {

    this.m_TestImage.RenderTransform.Value.RotatePrepend(180);

    // ore:

    this.m_TestImage.RenderTransform.Value.RotateAt(45, 25, 50);
    }
    catch (Exception Ex)
    {
    MessageBox.Show(Ex.ToString());
    }

    the Image change not the Rotation.

    Thank you for all Answers

    TOM_MUE
    www.tom-mue.de




      My System SpecsSystem Spec

  2. #2


    Jason [Mobiform] Guest

    Re: Image Rotate with C#

    the Image change not the Rotation.??

    Maybe you could post an image of the result you are getting and what you
    want to happen?

    Jason

    "Thomas Mueller" <_info@tom-mue.de> wrote in message
    news:eglJ31MUGHA.3192@TK2MSFTNGP09.phx.gbl...
    > Hi NG,
    >
    > how can i change the Rotate- State of an Image in C# Code? If I use the
    > following code:
    >
    > try
    > {
    >
    > this.m_TestImage.RenderTransform.Value.RotatePrepend(180);
    >
    > // ore:
    >
    > this.m_TestImage.RenderTransform.Value.RotateAt(45, 25,
    > 50);
    > }
    > catch (Exception Ex)
    > {
    > MessageBox.Show(Ex.ToString());
    > }
    >
    > the Image change not the Rotation.
    >
    > Thank you for all Answers
    >
    > TOM_MUE
    > www.tom-mue.de
    >
    >
    >




      My System SpecsSystem Spec

  3. #3


    Adam Smith [MS] Guest

    Re: Image Rotate with C#

    The problem here is that .Value returns a one-off Matrix representing the
    current effective transform of the object upon which you're calling .Value.
    It is not a read-write property. (incidentally, even if it were, since
    Value returns a Matrix which is a value type, and since all value types are
    pass by value by default, this wouldn't work in that case either)

    If you control your app to the extent that you can ensure that the value of
    RenderTransform is always a given type of Transform, you can do this like
    so:

    ((RotateTransform)this.m_TestImage.RenderTransform).Angle += 180;

    Or you could use a MatrixTransform and its Matrix property if you want
    general transformations. Remember that you still can't call
    MatrixTransform.Matrix.RotatePrepent(180) directly, since the RotatePrepend
    will operate on the temporary return value of .Matrix.

    -Adam Smith [MS]

    "Jason [Mobiform]" <Jason@mobiform.com> wrote in message
    news:u4BE88cUGHA.5828@TK2MSFTNGP10.phx.gbl...
    > the Image change not the Rotation.??
    >
    > Maybe you could post an image of the result you are getting and what you
    > want to happen?
    >
    > Jason
    >
    > "Thomas Mueller" <_info@tom-mue.de> wrote in message
    > news:eglJ31MUGHA.3192@TK2MSFTNGP09.phx.gbl...
    >> Hi NG,
    >>
    >> how can i change the Rotate- State of an Image in C# Code? If I use the
    >> following code:
    >>
    >> try
    >> {
    >>
    >> this.m_TestImage.RenderTransform.Value.RotatePrepend(180);
    >>
    >> // ore:
    >>
    >> this.m_TestImage.RenderTransform.Value.RotateAt(45, 25,
    >> 50);
    >> }
    >> catch (Exception Ex)
    >> {
    >> MessageBox.Show(Ex.ToString());
    >> }
    >>
    >> the Image change not the Rotation.
    >>
    >> Thank you for all Answers
    >>
    >> TOM_MUE
    >> www.tom-mue.de
    >>
    >>
    >>

    >
    >




      My System SpecsSystem Spec


Image Rotate with C#
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