EnvironmentPermission.SetPathList(EnvironmentPermissionAccess, String) Methode

Referenz

Definition

Namespace:: System.Security.Permissions

Assembly:: System.Security.Permissions.dll

Assembly:: mscorlib.dll

Paket:: System.Security.Permissions v6.0.0

Paket:: System.Security.Permissions v7.0.0

Paket:: System.Security.Permissions v8.0.0

Paket:: System.Security.Permissions v9.0.0-preview.2.24128.5

Quelle:: EnvironmentPermission.cs

Quelle:: EnvironmentPermission.cs

Quelle:: EnvironmentPermission.cs

Wichtig

Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.

Legt den angegebenen Zugriff auf die angegebenen Umgebungsvariablen auf den vorhandenen Zustand der Berechtigung fest.

public:
 void SetPathList(System::Security::Permissions::EnvironmentPermissionAccess flag, System::String ^ pathList);

public void SetPathList (System.Security.Permissions.EnvironmentPermissionAccess flag, string pathList);

member this.SetPathList : System.Security.Permissions.EnvironmentPermissionAccess * string -> unit

Public Sub SetPathList (flag As EnvironmentPermissionAccess, pathList As String)

Parameter

flag: EnvironmentPermissionAccess

Einer der EnvironmentPermissionAccess-Werte.

pathList: String

Eine Liste von Umgebungsvariablen (durch Semikolon getrennt).

Ausnahmen

ArgumentNullException

Der pathList-Parameter ist null.

ArgumentException

Der flag-Parameter ist kein gültiger Wert von EnvironmentPermissionAccess.

Beispiele

Im folgenden Codebeispiel wird die Verwendung der SetPathList -Methode veranschaulicht. Dieses Codebeispiel ist Teil eines größeren Beispiels, das für die EnvironmentPermission-Klasse bereitgestellt wird.

private bool SetGetPathListDemo()
{
    try
    {
        Console.WriteLine("********************************************************\n");
        Console.WriteLine("Creating an EnvironmentPermission with AllAccess rights for 'TMP'");
        EnvironmentPermission envPerm1 = new EnvironmentPermission(EnvironmentPermissionAccess.AllAccess, "TMP");
        Console.WriteLine("Adding 'TEMP' to the write access list, and 'windir' to the read access list.");
        envPerm1.AddPathList(EnvironmentPermissionAccess.Write, "TEMP");
        envPerm1.AddPathList(EnvironmentPermissionAccess.Read, "windir");
        Console.WriteLine("Read access list before SetPathList = "
            + envPerm1.GetPathList(EnvironmentPermissionAccess.Read));
        Console.WriteLine("Setting read access to 'TMP'");
        envPerm1.SetPathList(EnvironmentPermissionAccess.Read, "TMP");
        Console.WriteLine("Read access list after SetPathList = "
            + envPerm1.GetPathList(EnvironmentPermissionAccess.Read));
        Console.WriteLine("Write access list = " + envPerm1.GetPathList(EnvironmentPermissionAccess.Write));
        Console.WriteLine("Write access environment variables = "
            + envPerm1.GetPathList(EnvironmentPermissionAccess.AllAccess));
    }
    catch (ArgumentException e)
    {
        // EnvironmentPermissionAccess.AllAccess cannot be used as a parameter for GetPathList.
        Console.WriteLine("An ArgumentException occurred as a result of using AllAccess. "
            + " This property cannot be used as a parameter in GetPathList, because it represents "
            + "more than one type of environment variable : \n" + e);
    }

    return true;
}

Private Function SetGetPathListDemo() As Boolean 
    Try
        Console.WriteLine("********************************************************" + vbLf)
        Console.WriteLine("Creating an EnvironmentPermission with AllAccess rights for 'TMP'")
        Dim envPerm1 As New EnvironmentPermission(EnvironmentPermissionAccess.AllAccess, "TMP")
        Console.WriteLine("Adding 'TEMP' to the write access list, and 'windir' to the read access list.")
        envPerm1.AddPathList(EnvironmentPermissionAccess.Write, "TEMP")
        envPerm1.AddPathList(EnvironmentPermissionAccess.Read, "windir")
        Console.WriteLine("Read access list before SetPathList = " + envPerm1.GetPathList(EnvironmentPermissionAccess.Read))
        Console.WriteLine("Setting read access to 'TMP'")
        envPerm1.SetPathList(EnvironmentPermissionAccess.Read, "TMP")
        Console.WriteLine("Read access list after SetPathList = " + envPerm1.GetPathList(EnvironmentPermissionAccess.Read))
        Console.WriteLine("Write access list = " + envPerm1.GetPathList(EnvironmentPermissionAccess.Write))
        Console.WriteLine("Write access environment variables = " + envPerm1.GetPathList(EnvironmentPermissionAccess.AllAccess))
    Catch e As ArgumentException
        ' EnvironmentPermissionAccess.AllAccess cannot be used as a parameter for GetPathList.
        Console.WriteLine("An ArgumentException occurred as a result of using AllAccess. " + _
        " This property cannot be used as a parameter in GetPathList, because it represents " + _
        "more than one type of environment variable : " + vbLf + e.Message)
    End Try
    
    Return True

End Function 'SetGetPathListDemo

Hinweise

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