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Converting System.Windows.Media to System.Drawing objects

Posted By:      Posted Date: September 06, 2010    Points: 0   Category :Windows Application
Hello, I want to know if it's possible to convert the System.Windows.Media objects Color and Imaging.BitmapSource to the System.Drawing objects Color and Bitmap and the other way around. If yes, how can I do this?

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Converting a System.Windows.Control.Image object to byte array.

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System.Windows.Shapes.Ellipse to 'System.Windows.Media.Geometry'



is there a way to use  System.Windows.Shapes.Ellipse or other shapes where  'System.Windows.Media.Geometry' is required?

System.Windows.Media.Composition.DUCE.Channel.SyncFlush() error when we open our application in IE 8


Experts, please advice.

I have a WPF application developed using Visual Studio 2008 + DotNET 3.5 + Windows XP - SP 3.We have wrapped Our WPF application in Active X and hosting in IE 6 and it is works fine ,recently we migrated to IE 8 .Actually we are launching our app inside a parent application which is Browser based application(developed in java).

When we launch our app in IE 8 and switching between different modules along with our app in parent application our application is crashing.Pls find below stack trace for the problem.


Exception from HRESULT: 0x88980406
Exception Stack Trace: 

  at System.Windows.Media.Composition.DUCE.Channel.SyncFlush()
   at System.Windows.Media.MediaContext.CompleteRender()
   at System.Windows.Interop.HwndTarget.OnResize()
   at System.Windows.Interop.HwndTarget.HandleMessage(Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

Maximum size of a WriteableBitmap (System.Windows.Media.Imaging.WritableBitmap)

I'm trying to find out the size limits on the WPF WritableBitmap class (ie. System.Windows.Media.Imaging.WritableBitmap, not the Silverlight class with the same name).
In the help for the BitmapSource base class it says:
"The maximum height and width of an image is 2^16 pixels at 32 bits per channel * 4 channels. The maximum size of a BitmapSource is 2^32 bytes (64 gigabytes) and the maximum image size is four gigapixels."
1. By my calculation, 2^32 bytes is 4 Gigabytes, not 64 Gigabytes. So is the size limit 2^32 (4 Gigabytes) or 64 Gigabytes (2^36)? 
2. Are the limits different on 32 and 64 bit versions of the OS?
3. Do these size limits also apply to the derived WriteableBitmap class, or are there further constraints based on available / addressable system memory and/or video (texture) memory?
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Hi folks,

Just had a long afternoon debugging a potential bug in WPF (.NET 3.5 SP1 rev. 3.5.30729.4926).

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It started with a System.Windows.UIElement.Measure() call which crashed into a System.ExecutionEngineException. 

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I guess this would require a fix sometime :-).



Call Stack

0:011> !CLRStack

OS Thread Id: 0x5d4 (11)

ESP       EIP     

0705cf9c 75db194b [HelperMethodFrame_1OBJ: 0705cf9c] System.Environment.FailFast(System.String)

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Bitmap.SetResolution does nothing on Windows 7. It works fine on XP and Vista. This code demonstrates the problem:


            foreach (string file in Directory.GetFiles(@"C:\Temp\input"))


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                using (var bitmap = (Bitmap)Image.FromFile(file))


                    bitmap.SetResolution(200, 200);

                    newFile = Path.Combine(@"C:\Temp\output", Path.GetFileName(file));

                    bitmap.Save(newFile, ImageFormat.Png);


                using (Image image = Image.FromFile(newFile))





Hi there,


 I am doing one task on asp.net graphics. i would like to a form that let the user choose the color code from the color picker.

inside my backend code, i can get the color code and convert to the system.drawing.color.



Dim col As System.Drawing.Color = System.Drawing.ColorTranslator.FromHtml("#9932CC")

 Dim Brush As New SolidBrush(col)


but i have some problem in make this col object to alpha color. as i know the .net code that make the system color to become alpha is wrote as like tat :

gr.DrawString(strWatermarkText, wmFont, New SolidBrush(Color.FromArgb(8, 0, 0, 0)), x, y)


May someone share me how to make the color input from form to become alpha color? thanx in advanced. hope to hear from you all soon 


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I am trying to get the height and width of the image dynamically.  The reason is I am loading multiple images using code, where the image name is from the database. 

Here is my code:

in the ascx page, I have an asp image

<asp:image id="imgInfo" runat="server" /> 


In the code behind

string ImagePath = "~/products/img/" + dataviewImgInfo[0]["imgName"].ToString();

System.Drawing Image imgProd = System.Drawing.Image.FromFile(ImagePath);

if(imgProd.Height > 200)

imgInfo.Height = 100;




imgInfo.Height = 200



WHen I run this page I am getting the folloiwng error

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Mueez Siddiqui

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EventType clr20r3, P1 devenv.exe, P2 9.0.30729.1, P3 488f2b50, P4 system.drawing, P5, P6 488

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