如何以编程方式创建在XP,Vista和Windows 7中工作的文件关联

using Microsoft.Win32;

public static void CreateFileAssociation(string extension, string progId, string applicationPath)
{
    // 创建关联的ProgID
    using (RegistryKey rootKey = Registry.ClassesRoot.CreateSubKey(progId))
    {
        rootKey.SetValue(null, "My File Type");
        rootKey.SetValue("DefaultIcon", applicationPath + ",0");
        rootKey.SetValue("shell\\open\\command", "\"" + applicationPath + "\" \"%1\"");
    }

    // 将扩展名与ProgID关联
    using (RegistryKey rootKey = Registry.ClassesRoot.CreateSubKey(extension))
    {
        rootKey.SetValue(null, progId);
    }
}

CreateFileAssociation(".myextension", "MyApp.FileType", "C:\\Program Files\\MyApp\\MyApp.exe");