c# change framework error

Question

I am running Visual Studio 2010. I just change the frame work of my project from 4.0 to 3.5. I removed the reference Microsoft.Framework that it asked me to remove then trie

Answer 1

I ran into a Visual Studio bug that caused me a similar problem. I used this workaround to solve it:

A fix that SEEMS to work is to manually alter one character in the image stream EVERY TIME the usercontrol or form is edited in the designer

<data name="icons_20.ImageStream" mimetype="application/x-microsoft.net.object.binary.base64">
    <value>
     AAEAAAD/////AQAAAAAAAAAMAgAAAFdTeXN0ZW0uV2luZG93cy5Gb3JtcywgVmVyc2lvbj00LjAuMC4w

Change to

     AAEAAAD/////AQAAAAAAAAAMAgAAAFdTeXN0ZW0uV2luZG93cy5Gb3JtcywgVmVyc2lvbj0yLjAuMC4w

That is 00LjAuMC4w back to 0yLjAuMC4w at the end of the line (00 back to 0y)

But I have to fix that every time I change something in that form.

Answer 2

You can try regenerating the file by right-clicking the .resx file and choosing 'Run Custom Tool' from the context menu.

Edit: before you do this, change the Access Modifier or add a new value to force a regeneration.

Another edit: See Downgrade an application from .net 4.0 to 3.5 for another possibility

Answer 3

Having this problem for a long time, i lost hope that microsoft fix this bug ever. Then i begin use manual written code for handle pictures contains in resources:

string resource = "Company.Namespace.Resources.picture.gif";
pictureBox1.Image = new Bitmap(Assembly.GetExecutingAssembly()
.GetManifestResourceStream(resource));

Dot forget to set property "Build action" of picture.gif to "Embeded resource"

Answer 4

Not sure about this, but since the other answers didn't help, try this. The Version=4.0.0.0 in your file is telling the compiler to use .net 4.0 assemblies. Try changing them to Version=3.5.0.0 or Version=2.0.0.0 and see if that solves it.