C# 如何检查当前用户在Windows系统下的权限

System.Security.Principal.WindowsIdentity wid = System.Security.Principal.WindowsIdentity.GetCurrent();
System.Security.Principal.WindowsPrincipal printcipal = new System.Security.Principal.WindowsPrincipal(wid);
bool isAdmin=(printcipal .IsInRole(System.Security.Principal.WindowsBuiltInRole.Administrator));

如果 isAdmin 为true，则是在管理员权限下。

namespace System.Security.Principal
{
    // Summary:
    //     Specifies common roles to be used with System.Security.Principal.WindowsPrincipal.IsInRole(System.String).
    [Serializable]
    [ComVisible(true)]
    public enum WindowsBuiltInRole
    {
        // Summary:
        //     Administrators have complete and unrestricted access to the computer or domain.
        Administrator = 544,
        //
        // Summary:
        //     Users are prevented from making accidental or intentional system-wide changes.
        //     Thus, users can run certified applications, but not most legacy applications.
        User = 545,
        //
        // Summary:
        //     Guests are more restricted than users.
        Guest = 546,
        //
        // Summary:
        //     Power users possess most administrative permissions with some restrictions.
        //     Thus, power users can run legacy applications, in addition to certified applications.
        PowerUser = 547,
        //
        // Summary:
        //     Account operators manage the user accounts on a computer or domain.
        AccountOperator = 548,
        //
        // Summary:
        //     System operators manage a particular computer.
        SystemOperator = 549,
        //
        // Summary:
        //     Print operators can take control of a printer.
        PrintOperator = 550,
        //
        // Summary:
        //     Backup operators can override security restrictions for the sole purpose
        //     of backing up or restoring files.
        BackupOperator = 551,
        //
        // Summary:
        //     Replicators support file replication in a domain.
        Replicator = 552,
    }
}