FileIOPermission.SetPathList FileIOPermission.SetPathList FileIOPermission.SetPathList FileIOPermission.SetPathList Method

定义

设置指定文件和目录的特定访问权限,以替换现有的权限状态。Sets the specified access to the specified files and directories, replacing the existing state of the permission.

重载

SetPathList(FileIOPermissionAccess, String) SetPathList(FileIOPermissionAccess, String) SetPathList(FileIOPermissionAccess, String) SetPathList(FileIOPermissionAccess, String)

设置指定文件或目录的特定访问权限,以替换现有的权限状态。Sets the specified access to the specified file or directory, replacing the existing state of the permission.

SetPathList(FileIOPermissionAccess, String[]) SetPathList(FileIOPermissionAccess, String[]) SetPathList(FileIOPermissionAccess, String[]) SetPathList(FileIOPermissionAccess, String[])

设置对指定文件和目录的指定访问权限,同时用一组新路径替换指定访问权限的当前状态。Sets the specified access to the specified files and directories, replacing the current state for the specified access with the new set of paths.

SetPathList(FileIOPermissionAccess, String) SetPathList(FileIOPermissionAccess, String) SetPathList(FileIOPermissionAccess, String) SetPathList(FileIOPermissionAccess, String)

设置指定文件或目录的特定访问权限,以替换现有的权限状态。Sets the specified access to the specified file or directory, replacing the existing state of the permission.

public:
 void SetPathList(System::Security::Permissions::FileIOPermissionAccess access, System::String ^ path);
public void SetPathList (System.Security.Permissions.FileIOPermissionAccess access, string path);
member this.SetPathList : System.Security.Permissions.FileIOPermissionAccess * string -> unit
Public Sub SetPathList (access As FileIOPermissionAccess, path As String)

参数

path
String String String String

文件或目录的绝对路径。The absolute path of the file or directory.

异常

access 参数不是 FileIOPermissionAccess 的有效值。The access parameter is not a valid value of FileIOPermissionAccess.

-or- path 参数不是有效的字符串。The path parameter is not a valid string.

- 或 --or- path 参数未指定文件或目录的绝对路径。The path parameter did not specify the absolute path to the file or directory.

示例

下面的代码示例演示FileIOPermission.SetPathList(FileIOPermissionAccess, String)方法的用法。The following code example shows the use of the FileIOPermission.SetPathList(FileIOPermissionAccess, String) method.

bool SetGetPathListDemo()
{
   try
   {
      Console::WriteLine( "********************************************************\n" );
      FileIOPermission^ fileIOPerm1;
      Console::WriteLine( "Creating a FileIOPermission with AllAccess rights for 'C:\\Examples\\Test\\TestFile.txt" );
      
      fileIOPerm1 = gcnew FileIOPermission( FileIOPermissionAccess::AllAccess,"C:\\Examples\\Test\\TestFile.txt" );
      
      Console::WriteLine( "Adding 'C:\\Temp' to the write access list, and \n 'C:\\Examples\\Test' to read access." );
      fileIOPerm1->AddPathList( FileIOPermissionAccess::Write, "C:\\Temp" );
      fileIOPerm1->AddPathList( FileIOPermissionAccess::Read, "C:\\Examples\\Test" );
      array<String^>^paths = fileIOPerm1->GetPathList( FileIOPermissionAccess::Read );
      Console::WriteLine( "Read access before SetPathList = " );
      IEnumerator^ myEnum = paths->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         String^ path = safe_cast<String^>(myEnum->Current);
         Console::WriteLine( "\t{0}", path );
      }

      Console::WriteLine( "Setting the read access list to \n'C:\\Temp'" );
      fileIOPerm1->SetPathList( FileIOPermissionAccess::Read, "C:\\Temp" );
      paths = fileIOPerm1->GetPathList( FileIOPermissionAccess::Read );
      Console::WriteLine( "Read access list after SetPathList = " );
      IEnumerator^ myEnum1 = paths->GetEnumerator();
      while ( myEnum1->MoveNext() )
      {
         String^ path = safe_cast<String^>(myEnum1->Current);
         Console::WriteLine( "\t{0}", path );
      }

      paths = fileIOPerm1->GetPathList( FileIOPermissionAccess::Write );
      Console::WriteLine( "Write access list after SetPathList = " );
      IEnumerator^ myEnum2 = paths->GetEnumerator();
      while ( myEnum2->MoveNext() )
      {
         String^ path = safe_cast<String^>(myEnum2->Current);
         Console::WriteLine( "\t{0}", path );
      }

      Console::WriteLine( "Write access = \n{0}", fileIOPerm1->GetPathList( FileIOPermissionAccess::AllAccess ) );
   }
   catch ( ArgumentException^ e ) 
   {
      
      // FileIOPermissionAccess.AllAccess can not 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 file variable access. : \n{0}", e );
   }

   return true;
}


private bool SetGetPathListDemo()
{
    try
    {
        Console.WriteLine("********************************************************\n");

        FileIOPermission fileIOPerm1;
        Console.WriteLine("Creating a FileIOPermission with AllAccess rights for 'C:\\Examples\\Test\\TestFile.txt");
        fileIOPerm1 = new FileIOPermission(FileIOPermissionAccess.AllAccess, "C:\\Examples\\Test\\TestFile.txt");
        Console.WriteLine("Adding 'C:\\Temp' to the write access list, and \n 'C:\\Examples\\Test' to read access.");
        fileIOPerm1.AddPathList(FileIOPermissionAccess.Write, "C:\\Temp");
        fileIOPerm1.AddPathList(FileIOPermissionAccess.Read, "C:\\Examples\\Test");
        string[] paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Read);
        Console.WriteLine("Read access before SetPathList = ");
        foreach (string path in paths)
        {
            Console.WriteLine("\t" + path);
        }
        Console.WriteLine("Setting the read access list to \n'C:\\Temp'");
        fileIOPerm1.SetPathList(FileIOPermissionAccess.Read, "C:\\Temp");
        paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Read);
        Console.WriteLine("Read access list after SetPathList = ");
        foreach (string path in paths)
        {
            Console.WriteLine("\t" + path);
        }

        paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Write);
        Console.WriteLine("Write access list after SetPathList = ");
        foreach (string path in paths)
        {
            Console.WriteLine("\t" + path);
        }

        Console.WriteLine("Write access = \n" +
            fileIOPerm1.GetPathList(FileIOPermissionAccess.AllAccess));

    }
    catch (ArgumentException e)
    {
        // FileIOPermissionAccess.AllAccess can not 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 file variable access. : \n" + e);
    }

    return true;
}
Private Function SetGetPathListDemo() As Boolean
    Try
        Console.WriteLine("********************************************************" & ControlChars.Lf)

        Dim fileIOPerm1 As FileIOPermission
        Console.WriteLine("Creating a FileIOPermission with AllAccess rights for 'C:\Examples\Test\TestFile.txt")
        fileIOPerm1 = New FileIOPermission(FileIOPermissionAccess.AllAccess, "C:\Examples\Test\TestFile.txt")
        Console.WriteLine("Adding 'C:\Temp' to the write access list, and " & ControlChars.Lf & " 'C:\Examples\Test' to read access.")
        fileIOPerm1.AddPathList(FileIOPermissionAccess.Write, "C:\Temp")
        fileIOPerm1.AddPathList(FileIOPermissionAccess.Read, "C:\Examples\Test")
        Dim paths As String() = fileIOPerm1.GetPathList(FileIOPermissionAccess.Read)
        Console.WriteLine("Read access before SetPathList = ")
        Dim path As String
        For Each path In paths
            Console.WriteLine((ControlChars.Tab & path))
        Next path
        Console.WriteLine("Setting the read access list to " & ControlChars.Lf & "'C:\Temp'")
        fileIOPerm1.SetPathList(FileIOPermissionAccess.Read, "C:\Temp")
        paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Read)
        Console.WriteLine("Read access list after SetPathList = ")
        For Each path In paths
            Console.WriteLine((ControlChars.Tab & path))
        Next path

        paths = fileIOPerm1.GetPathList(FileIOPermissionAccess.Write)
        Console.WriteLine("Write access list after SetPathList = ")
        For Each path In paths
            Console.WriteLine((ControlChars.Tab & path))
        Next path

        Dim pathList() As String
        pathList = fileIOPerm1.GetPathList(FileIOPermissionAccess.AllAccess)

    Catch e As ArgumentException
        ' FileIOPermissionAccess.AllAccess can not 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 file variable access. : " & ControlChars.Lf & e.ToString()))
    End Try

    Return True
End Function 'SetGetPathListDemo

注解

指定访问类型的当前权限的以前状态被覆盖。The previous state of the current permission for the specified access type is overwritten. 下面的代码将 C:\temp 的访问设置为ReadThe following code sets the access for C:\temp to Read.

fileIOPerm1->SetPathList(FileIOPermissionAccess::Read, "C:\\temp");
fileIOPerm1.SetPathList(FileIOPermissionAccess.Read, "C:\\temp");
fileIOPerm1.SetPathList(FileIOPermissionAccess.Read, "C:\\temp")

此访问将不会被以下代码覆盖,因为访问类型不相同。This access will not be overwritten by the following code because the access types are not the same.

fileIOPerm1->SetPathList(FileIOPermissionAccess::Write, "C:\\documents");
fileIOPerm1.SetPathList(FileIOPermissionAccess.Write, "C:\\documents");
fileIOPerm1.SetPathList(FileIOPermissionAccess.Write, "C:\\documents")

SetPathList(FileIOPermissionAccess, String[]) SetPathList(FileIOPermissionAccess, String[]) SetPathList(FileIOPermissionAccess, String[]) SetPathList(FileIOPermissionAccess, String[])

设置对指定文件和目录的指定访问权限,同时用一组新路径替换指定访问权限的当前状态。Sets the specified access to the specified files and directories, replacing the current state for the specified access with the new set of paths.

public:
 void SetPathList(System::Security::Permissions::FileIOPermissionAccess access, cli::array <System::String ^> ^ pathList);
public void SetPathList (System.Security.Permissions.FileIOPermissionAccess access, string[] pathList);
member this.SetPathList : System.Security.Permissions.FileIOPermissionAccess * string[] -> unit
Public Sub SetPathList (access As FileIOPermissionAccess, pathList As String())

参数

pathList
String[]

包含文件和目录的绝对路径的数组。An array containing the absolute paths of the files and directories.

异常

access 参数不是 FileIOPermissionAccess 的有效值。The access parameter is not a valid value of FileIOPermissionAccess.

- 或 --or- pathList 参数中的某一项不是有效的字符串。An entry in the pathList parameter is not a valid string.

注解

指定访问类型的当前权限的以前状态被覆盖。The previous state of the current permission for the specified access type is overwritten. 下面的代码将 C:\temp 的访问设置为ReadThe following code sets the access for C:\temp to Read.

此访问将不会被以下代码覆盖,因为访问类型不相同。This access will not be overwritten by the following code because the access types are not the same.

fileIOPerm1->SetPathList(FileIOPermissionAccess::Write, gcnew array<String^> {"C:\\pictures", "C:\\music"});
fileIOPerm1.SetPathList(FileIOPermissionAccess.Write, new string[] {"C:\\pictures", "C:\\music"});
fileIOPerm1.SetPathList(FileIOPermissionAccess.Write, New String() {"C:\\pictures", "C:\\music"})

适用于