C＃向后兼容性

Question

1. I am using windows 7 running .net 4.0
2. I wrote an application on my platform then distributed it to my coworkers.
3. They are using windows XP .net 3.0 and 3.5
4. They can not update to .net 4 for business reasons.
5. I am running Visual studio 2010

How can i make my application backwards compatible so that they can use it?

Answer 1

If you don't use any .NET 4 specific features, just target 3.0 or 3.5. That will solve any compatibility problems. Here's a link on MSDN detailing how to do it:

• On the Project menu, click ProjectName Properties.
• Click the Application tab.
• In the Target Framework list, select either .NET Framework 2.0, .NET Framework 3.0, or .NET Framework 3.5.

Answer 2

Don't use .NET 4.0 features and set the target framework to .NET 3.5 on your project. Then rebuild and redistribute. How to do it:

• In Visual Studio, open the project you want to change.

• Right-click the project in Solution Explorer and then click Properties.

• In the Project Designer, locate the Target Framework list, as follows.

• For Visual C# projects, the Target Framework list is on the Application tab of the Project Designer. For more information, see Application Page, Project Designer (C#).

• In the Target Framework list, select the .NET Framework version or profile that you want.

More detailed information here .

Also, about don't using 4.0 features, you can read more about what C# features here .

Answer 3

在项目中定位.Net v3.51框架

Answer 4

Only use features supported by .net 3.5. Don't use any .net 4.0+ features.