private void BTSend_Click(object sender, EventArgs e) { byte[] sendBytes = Encoding.UTF8.GetBytes(tBmsg.Text.Trim()); if (tCPClient.SendData(TCPClient.Md5pwd, sendBytes)) { rTBMSG.Text += "已发送>>" + tBmsg.Text.Trim() + "\n"; tBmsg.Text = ""; } }
private void Button_Send_Click(object sender, EventArgs e) { try { string wholemessage = "(" + DateTime.Now.Hour + ":" + DateTime.Now.Minute + ":" + DateTime.Now.Second + ") " + myname + " - " + this.TextBox_Send.Text; string mymessage = "(" + DateTime.Now.Hour + ":" + DateTime.Now.Minute + ":" + DateTime.Now.Second + ") " + "You - " + this.TextBox_Send.Text; if (flag1 == 1) { byte[] Key1 = Encoding.UTF8.GetBytes(this.TextBox_Key.Text); int dem = 0; for (int i = 0; i < 32; i++) { if (dem < Key1.Length) { Key[i] = Key1[dem++]; } if (dem == Key1.Length) { dem = 0; } } using (Aes aes = Aes.Create()) { byte[] IV = aes.IV; encrypted = Encrypt_String_Aes(wholemessage, Key, aes.IV); //string cipherText = Encoding.UTF8.GetString(encrypted); string plaintext = Decrypt_String_AES(encrypted, Key, IV); int count1 = 0; int count2 = 0; int length = IV.Length + encrypted.Length; byte[] byte_length = ConvertInt32ToByteArray(length); byte[] byteSend = new byte[IV.Length + encrypted.Length + byte_length.Length]; for (int i = 0; i < IV.Length + encrypted.Length + byte_length.Length; i++) { if (i < byte_length.Length) { byteSend[i] = byte_length[i]; } else if (i < byte_length.Length + IV.Length) { byteSend[i] = IV[count1++]; } else { byteSend[i] = encrypted[count2++]; } } tcpclient.SendData(byteSend); } } Listbox_Chat.Items.Add(mymessage); this.TextBox_Send.Clear(); } catch (Exception ex) { MessageBox.Show(ex.Message.ToString(), "Runtime Exception", MessageBoxButtons.OK, MessageBoxIcon.Error); } }