SecureString.InsertAt(Int32, Char) Yöntem
Tanım
Önemli
Bazı bilgiler ürünün ön sürümüyle ilgilidir ve sürüm öncesinde önemli değişiklikler yapılmış olabilir. Burada verilen bilgilerle ilgili olarak Microsoft açık veya zımni hiçbir garanti vermez.
Bu güvenli dizeye belirtilen dizin konumunda bir karakter ekler.
public:
void InsertAt(int index, char c);
public void InsertAt (int index, char c);
[System.Runtime.ExceptionServices.HandleProcessCorruptedStateExceptions]
public void InsertAt (int index, char c);
member this.InsertAt : int * char -> unit
[<System.Runtime.ExceptionServices.HandleProcessCorruptedStateExceptions>]
member this.InsertAt : int * char -> unit
Public Sub InsertAt (index As Integer, c As Char)
Parametreler
- index
- Int32
Parametrenin ekli olduğu c
dizin konumu.
- c
- Char
Eklensin karakter.
- Öznitelikler
Özel durumlar
Bu güvenli dize zaten atıldı.
Bu güvenli dize salt okunur.
index
sıfırdan küçük veya bu güvenli dizenin uzunluğundan büyük.
-veya- Bu işlemi gerçekleştirmek, bu güvenli dizenin uzunluğunu 65.536 karakterden büyük hale döndürür.
Bu güvenli dizenin değerini korurken veya korurken bir hata oluştu.
Örnekler
Aşağıdaki örnek, , AppendChar InsertAt ve RemoveAt SetAt Clear yöntemlerinin bir nesnenin değerini nasıl etkilediğini SecureString gösterir.
using namespace System;
using namespace System::Security;
void main()
{
String^ msg = L" The current length of the SecureString object: {0}\n";
SecureString ^ ss = gcnew SecureString;
Console::WriteLine(L"1) Instantiate the SecureString object:");
Console::WriteLine(msg, ss->Length );
Console::WriteLine(L"2) Append 'a' to the value:");
ss->AppendChar('a');
Console::WriteLine(msg, ss->Length );
Console::WriteLine(L"3) Append 'X' to the value:");
ss->AppendChar('X');
Console::WriteLine(msg, ss->Length);
Console::WriteLine(L"4) Append 'c' to the value:");
ss->AppendChar('c');
Console::WriteLine(msg, ss->Length);
Console::WriteLine(L"5) Insert 'd' at the end of the value:");
ss->InsertAt(ss->Length, 'd');
Console::WriteLine(msg, ss->Length);
Console::WriteLine(L"6) Remove the last character ('d') from the value:");
ss->RemoveAt(3);
Console::WriteLine(msg, ss->Length);
Console::WriteLine(L"7) Set the second character ('X') of the value to 'b':" );
ss->SetAt(1, 'b');
Console::WriteLine(msg, ss->Length );
Console::WriteLine(L"8) Delete the value of the SecureString object:");
ss->Clear();
Console::WriteLine(msg, ss->Length);
delete ss;
}
/*
This code example produces the following results:
This example demonstrates the effect of the AppendChar, InsertAt,
RemoveAt, SetAt, and Clear methods on the value of a SecureString
object. This example simulates the value of the object because the
actual value is encrypted.
1) The initial value of the SecureString object:
SecureString = ""
Length = 0
2) AppendChar: Append 'a' to the value:
SecureString = "a"
Length = 1
3) AppendChar: Append 'X' to the value:
SecureString = "aX"
Length = 2
4) AppendChar: Append 'c' to the value:
SecureString = "aXc"
Length = 3
5) InsertAt: Insert 'd' at the end of the value (equivalent
to AppendChar):
SecureString = "aXcd"
Length = 4
6) RemoveAt: Remove the last character ('d') from the value:
SecureString = "aXc"
Length = 3
7) SetAt: Set the second character ('X') of the value to 'b':
SecureString = "abc"
Length = 3
8) Clear: Delete the value of the SecureString object:
SecureString = ""
Length = 0
*/
using System;
using System.Security;
class Example
{
public static void Main()
{
string msg = "The curent length of the SecureString object: {0}\n";
Console.WriteLine("1) Instantiate the SecureString object.");
SecureString ss = new SecureString();
Console.WriteLine(msg, ss.Length);
Console.WriteLine("2) Append 'a' to the value.");
ss.AppendChar('a');
Console.WriteLine(msg, ss.Length);
Console.WriteLine("3) Append 'X' to the value.");
ss.AppendChar('X');
Console.WriteLine(msg, ss.Length);
Console.WriteLine("4) Append 'c' to the value.");
ss.AppendChar('c');
Console.WriteLine(msg, ss.Length);
Console.WriteLine("5) Insert 'd' at the end of the value.");
ss.InsertAt(ss.Length, 'd');
Console.WriteLine(msg, ss.Length);
Console.WriteLine("6) Remove the last character ('d') from the value.");
ss.RemoveAt(3);
Console.WriteLine(msg, ss.Length);
Console.WriteLine("7) Set the second character of the value to 'b'.");
ss.SetAt(1, 'b');
Console.WriteLine(msg, ss.Length);
Console.WriteLine("8) Delete the value of the SecureString object:");
ss.Clear();
Console.WriteLine(msg, ss.Length);
ss.Dispose();
}
}
// The example displays the following output:
// 1) Instantiate the SecureString object.
// The curent length of the SecureString object: 0
//
// 2) Append 'a' to the value.
// The curent length of the SecureString object: 1
//
// 3) Append 'X' to the value.
// The curent length of the SecureString object: 2
//
// 4) Append 'c' to the value.
// The curent length of the SecureString object: 3
//
// 5) Insert 'd' at the end of the value.
// The curent length of the SecureString object: 4
//
// 6) Remove the last character ('d') from the value.
// The curent length of the SecureString object: 3
//
// 7) Set the second character of the value to 'b'.
// The curent length of the SecureString object: 3
//
// 8) Delete the value of the SecureString object:
// The curent length of the SecureString object: 0
Imports System.Security
Module Example
Public Sub Main()
Dim msg As String = "The curent length of the SecureString object: {0}" + vbCrLf
Console.WriteLine("1) Instantiate the SecureString object.")
Dim ss As New SecureString()
Console.WriteLine(msg, ss.Length)
Console.WriteLine("2) Append 'a' to the value.")
ss.AppendChar("a"c)
Console.WriteLine(msg, ss.Length)
Console.WriteLine("3) Append 'X' to the value.")
ss.AppendChar("X"c)
Console.WriteLine(msg, ss.Length)
Console.WriteLine("4) Append 'c' to the value.")
ss.AppendChar("c"c)
Console.WriteLine(msg, ss.Length)
Console.WriteLine("5) Insert 'd' at the end of the value.")
ss.InsertAt(ss.Length, "d"c)
Console.WriteLine(msg, ss.Length)
Console.WriteLine("6) Remove the last character ('d') from the value.")
ss.RemoveAt(3)
Console.WriteLine(msg, ss.Length)
Console.WriteLine("7) Set the second character of the value to 'b'.")
ss.SetAt(1, "b"c)
Console.WriteLine(msg, ss.Length)
Console.WriteLine("8) Delete the value of the SecureString object:")
ss.Clear()
Console.WriteLine(msg, ss.Length)
ss.Dispose()
End Sub
End Module
' The example displays the following output:
' 1) Instantiate the SecureString object.
' The curent length of the SecureString object: 0
'
' 2) Append 'a' to the value.
' The curent length of the SecureString object: 1
'
' 3) Append 'X' to the value.
' The curent length of the SecureString object: 2
'
' 4) Append 'c' to the value.
' The curent length of the SecureString object: 3
'
' 5) Insert 'd' at the end of the value.
' The curent length of the SecureString object: 4
'
' 6) Remove the last character ('d') from the value.
' The curent length of the SecureString object: 3
'
' 7) Set the second character of the value to 'b'.
' The curent length of the SecureString object: 3
'
' 8) Delete the value of the SecureString object:
' The curent length of the SecureString object: 0
Açıklamalar
Dizin sıfır tabanlıdır; Bu güvenli dizedeki ilk karakter dizin konumunda sıfırdır.
Uygulama şifreleme gibi bir koruma mekanizması kullanıyorsa, varsa güvenli dizenin değeri korumasızdır; c
belirtilen dizin konumunda eklenir; ardından yeni değer yeniden korunur. yöntemi, parametresi bu örneğin uzunluğuna ayarlanırsa, güvenli bir dizenin sonuna bir karakter ekser yöntemiyle InsertAt AppendChar aynı sonuçları index
InsertAt verir.