array as sbyte()=new sbyte() { -84 , 99 , -7 }
c#.NET代码：
System.Array.ConvertAll<sbyte, byte>(array, a => (byte) a)
代码：
System.Array.ConvertAll(Of SByte, Byte)(array, Function(a) (IIf(a > 0, a, 256 - Math.Abs(a))))
array参数是定义好的sbyte()
套嵌 iif(a>0,cbyte(a),cbyte(256-Math.Abs(a))) 时候出错，array数组里面有负数
把cbyte 壳去掉竟然好了
里面没有更好的转换方法么？将SBbyte转换Byte

【完整过程代码】
    Public Shared Function DecryptionKEY(ByVal message As String) As String
        Try
            Dim keystring As String = "q1!2@3#we>WacE/.Q,?<b"
            Dim array As SByte() = New SByte() {-87, -101, -56, 50, &H56, &H35, -29, 3}
            Dim num As Integer = &H13
            Dim generator As New PKCSKeyGenerator(keystring, System.Array.ConvertAll(Of SByte, Byte)(array, Function(a) (IIf(a > 0, a, 256 - Math.Abs(a)))), num, 1)
            Dim inputBuffer As Byte() = Convert.FromBase64String(message)
            Dim bytes As Byte() = generator.Decryptor.TransformFinalBlock(inputBuffer, 0, inputBuffer.Length)
            Return Encoding.UTF8.GetString(bytes)
        Catch ex As Exception
            Return "ERROR CODE 702"
        End Try
    End Function
【C#完整代码】
public static String DecryptionKEY(String message)
        {
            try
            {
                String key = "q1!2@3#we>WacE/.Q,?<b";  
                sbyte[] salt = { -87, -101, -56, 50, 86, 53, -29, 3 };
                int count = 19;

                PKCSKeyGenerator cipher = new PKCSKeyGenerator(key, Array.ConvertAll(salt, a => (byte)a), count, 1);
                byte[] src = Convert.FromBase64String(message);
                byte[] result = cipher.Decryptor.TransformFinalBlock(src, 0, src.Length);
                return Encoding.UTF8.GetString(result);
            }
            catch
            {
                return "DecryptionKEY Fail.";
            }
            
        }

[ 本帖最后由 hn496658432 于 2014-4-8 23:00 编辑 ]

兰姆达表达式，可以直接这么写的，现在需要的是类型转换

代码不完成的，直接截取的。跪求解释或者其他更简明的转换方法或者函数，搜不到资料了

[ 本帖最后由 hn496658432 于 2014-4-8 22:56 编辑 ]