System.ServiceModel缺失

Question

I'm working with VS2010 express on Win7 (64 bit) and I'm trying use System.ServiceModel but I get an error that there is no ServiceModel in the System namespace:

The type or namespace name 'ServiceModel' does not exist in the namespace 'System' (are you missing an assembly reference?)

I looked in \\Windows\\Microsoft.NET\\Framework\\v4.0.30319 and there are some ServiceModel___.dll files but I don't know if I'm missing something or if they are corrupted.

Any advice?

Thanks, Yonatan

Answer 1

Add a reference to the assembly System.ServiceModel. Select Project -> Add Reference and then select the assembly name.

Answer 2

右键单击Project - > Properties - > Application - > Target Framework = .NET Framework 4.5

Answer 3

The System.ServiceModel namespace is in System.ServiceModel.dll.

I'm not running 64 bit Windows so I can't check whether that's the right location.

Answer 4

Sometimes Visual Studio doesn't install this dll in GAC.
You can gac what is located in %systemDrive%\\Windows\\Microsoft.NET\\Framework\\v4.0.30319 using gacutil /i dll_file
To use gacutil you can open Command Prompt from Visual Studio Tools menu.