Set "start in" box for a shortcut C#

How can I set the start in 开发者_高级运维path for a shortcut? I am creating the shortcut using

WshShellClass WshShell = new WshShellClass(); 
IWshRuntimeLibrary.IWshShortcut shortcut;

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I believe to set that you use the WorkingDirectory property of IWshShortcut

shortcut.WorkingDirectory = "C:\temp";

See this link for a C# tutorial on creating shortcuts