请求把下列C#转成vb.net

public class DingTalkEncryptException : Exception
    {
        /**成功**/
        public static readonly int SUCCESS = 0;
        /**加密明文文本非法**/
        public readonly static int ENCRYPTION_PLAINTEXT_ILLEGAL = 900001;
        /**加密时间戳参数非法**/
        public readonly static int ENCRYPTION_TIMESTAMP_ILLEGAL = 900002;
        /**加密随机字符串参数非法**/
        public readonly static int ENCRYPTION_NONCE_ILLEGAL = 900003;
        /**不合法的aeskey**/
        public readonly static int AES_KEY_ILLEGAL = 900004;
        /**签名不匹配**/
        public readonly static int SIGNATURE_NOT_MATCH = 900005;
        /**计算签名错误**/
        public readonly static int COMPUTE_SIGNATURE_ERROR = 900006;
        /**计算加密文字错误**/
        public readonly static int COMPUTE_ENCRYPT_TEXT_ERROR = 900007;
        /**计算解密文字错误**/
        public readonly static int COMPUTE_DECRYPT_TEXT_ERROR = 900008;
        /**计算解密文字长度不匹配**/
        public readonly static int COMPUTE_DECRYPT_TEXT_LENGTH_ERROR = 900009;
        /**计算解密文字corpid不匹配**/
        public readonly static int COMPUTE_DECRYPT_TEXT_CORPID_ERROR = 900010;

        private static Dictionary<int, String> msgMap = new Dictionary<int, String>();
        static DingTalkEncryptException()
        {
            msgMap[SUCCESS] = "成功";
            msgMap[ENCRYPTION_PLAINTEXT_ILLEGAL] = "加密明文文本非法";
            msgMap[ENCRYPTION_TIMESTAMP_ILLEGAL] = "加密时间戳参数非法";
            msgMap[ENCRYPTION_NONCE_ILLEGAL] = "加密随机字符串参数非法";
            msgMap[SIGNATURE_NOT_MATCH] = "签名不匹配";
            msgMap[COMPUTE_SIGNATURE_ERROR] = "签名计算失败";
            msgMap[AES_KEY_ILLEGAL] = "不合法的aes key";
            msgMap[COMPUTE_ENCRYPT_TEXT_ERROR] = "计算加密文字错误";
            msgMap[COMPUTE_DECRYPT_TEXT_ERROR] = "计算解密文字错误";
            msgMap[COMPUTE_DECRYPT_TEXT_LENGTH_ERROR] = "计算解密文字长度不匹配";
            msgMap[COMPUTE_DECRYPT_TEXT_CORPID_ERROR] = "计算解密文字corpid不匹配";
        }

        private int code;
        public DingTalkEncryptException(int exceptionCode) : base(msgMap[exceptionCode])
        {
            this.code = exceptionCode;
        }
    }

Imports System
Imports System.Collections.Generic

Namespace ConsoleApp
	Public Class DingTalkEncryptException
		Inherits Exception
		Public Shared SUCCESS As Integer
		Public Shared ENCRYPTION_PLAINTEXT_ILLEGAL As Integer
		Public Shared ENCRYPTION_TIMESTAMP_ILLEGAL As Integer
		Public Shared ENCRYPTION_NONCE_ILLEGAL As Integer
		Public Shared AES_KEY_ILLEGAL As Integer
		Public Shared SIGNATURE_NOT_MATCH As Integer
		Public Shared COMPUTE_SIGNATURE_ERROR As Integer
		Public Shared COMPUTE_ENCRYPT_TEXT_ERROR As Integer
		Public Shared COMPUTE_DECRYPT_TEXT_ERROR As Integer
		Public Shared COMPUTE_DECRYPT_TEXT_LENGTH_ERROR As Integer
		Public Shared COMPUTE_DECRYPT_TEXT_CORPID_ERROR As Integer
		Private Shared msgMap As Dictionary(Of Integer, String)
		Private code As Integer
		Shared Sub New()
			DingTalkEncryptException.SUCCESS = 0
			DingTalkEncryptException.ENCRYPTION_PLAINTEXT_ILLEGAL = 900001
			DingTalkEncryptException.ENCRYPTION_TIMESTAMP_ILLEGAL = 900002
			DingTalkEncryptException.ENCRYPTION_NONCE_ILLEGAL = 900003
			DingTalkEncryptException.AES_KEY_ILLEGAL = 900004
			DingTalkEncryptException.SIGNATURE_NOT_MATCH = 900005
			DingTalkEncryptException.COMPUTE_SIGNATURE_ERROR = 900006
			DingTalkEncryptException.COMPUTE_ENCRYPT_TEXT_ERROR = 900007
			DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_ERROR = 900008
			DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_LENGTH_ERROR = 900009
			DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_CORPID_ERROR = 900010
			DingTalkEncryptException.msgMap = New Dictionary(Of Integer, String)()
			DingTalkEncryptException.msgMap(DingTalkEncryptException.SUCCESS) = "成功"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.ENCRYPTION_PLAINTEXT_ILLEGAL) =  "加密明文文本非法"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.ENCRYPTION_TIMESTAMP_ILLEGAL) = "加密时间戳参数非法"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.ENCRYPTION_NONCE_ILLEGAL) =  "加密随机字符串参数非法"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.SIGNATURE_NOT_MATCH) = "签名不匹配"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.COMPUTE_SIGNATURE_ERROR) = "签名计算失败"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.AES_KEY_ILLEGAL) = "不合法的aes key"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.COMPUTE_ENCRYPT_TEXT_ERROR) = "计算加密文字错误"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_ERROR) =  "计算解密文字错误"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_LENGTH_ERROR) =  "计算解密文字长度不匹配"
			DingTalkEncryptException.msgMap(DingTalkEncryptException.COMPUTE_DECRYPT_TEXT_CORPID_ERROR) =  "计算解密文字corpid不匹配"
		End Sub

		Public Sub New(exceptionCode As Integer)
			MyBase.[New](DingTalkEncryptException.msgMap(exceptionCode))
			Me.code = exceptionCode
		End Sub
	End Class
End Namespace

下载.NET SDK直接用即可

https://developers.dingtalk.com/document/resourcedownload?pnamespace=app