Hi,
I have a solution with many, many projects. How do I change the target framework to .NET 4.0 without going to each one individually and manually changing the dropdown?
+1
A:
Try comparing a 3.5 project file and a 4.0 project file and use a file based search/replace operation.
I think only these two version numbers differ:
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
Sandor Drieënhuizen
2010-04-26 13:26:56
I've searched the whole solution and not found the strings "TargetFrameworkVersion" or "ToolsVersion" ??
Carlos
2010-04-26 13:32:00
Did you open a .csproj file in Notepad using Windows Explorer?
Sandor Drieënhuizen
2010-04-26 13:33:52
No, I used the find/replace in VS2010.
Carlos
2010-04-26 13:34:30
I see. I think the easiest way to go about is closing you solution (but not Visual Studio) and press Control+Shift+H to open the Find and Replace box. Look in the solution directory and all file types.
Sandor Drieënhuizen
2010-04-26 13:36:45
But then how do I edit all the files?I fond this:http://www.codeproject.com/Articles/74805/Visual-Studio-2010-and-Target-Framework-Version.aspx
Carlos
2010-04-26 13:41:17
The Find and Replace box you get by pressing Control+Shift+H can do that for you. Just replace `<Project ToolsVersion="3.5"` by `<Project ToolsVersion="4.0"` (I'm guessing the 3.5 here, check for the actual value yourself) and replace `<TargetFrameworkVersion>v3.5</TargetFrameworkVersion>` by `<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>`.
Sandor Drieënhuizen
2010-04-26 13:43:45
Aha! It seems to work. The toolsversions don't need changing, because I've already opened the files in VS2010.The critical point is that the find/replace appears to work differently when you don't have a solution loaded.
Carlos
2010-04-26 13:54:57