tencent cloud

Message Classification

IM messages are classified by message destination into two types: one-to-one messages (also called C2C messages) and group messages.

IM messages can also be classified by content into text messages, image messages, video messages, voice messages, file messages, location messages, combined messages, and group tips.

Sending Text Messages

public static void MsgSendMessage() {
      string conv_id = ""; // The ID of a C2C message is the UserID, and that of a group message is the GroupID.
      Message message = new Message();
      message.message_conv_id = conv_id;
      message.message_conv_type = TIMConvType.kTIMConv_C2C;// For a group message, this value is TIMConvType.kTIMConv_Group.
      List<Elem> messageElems = new List<Elem>(); 
      Elem textMessage = new Elem(); // Create a message
      textMessage.elem_type = TIMElemType.kTIMElem_Text;
      textMessage.text_elem_content = "This is a text message";
      messageElems.Add(textMessage);
      message.message_elem_array = messageElems;
      StringBuilder messageId = new StringBuilder(128);
       TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
        // Async message sending result
      });
            // The message ID messageId returned when the message is sent
}

Sending Image Messages

public static void MsgSendMessage() {
      string conv_id = ""; // The ID of a C2C message is the UserID, and that of a group message is the GroupID.
      Message message = new Message();
      message.message_conv_id = conv_id;
      message.message_conv_type = TIMConvType.kTIMConv_C2C;// For a group message, this value is TIMConvType.kTIMConv_Group.
      List<Elem> messageElems = new List<Elem>(); 
      Elem imageMessage = new Elem(); // Create a message
      imageMessage.elem_type = TIMElemType.kTIMElem_Image;
      imageMessage.image_elem_orig_path = "/Users/xxx/xxx.png"; // Absolute path to the file
            imageMessage.image_elem_level = TIMImageLevel.kTIMImageLevel_Orig; // Send an original image
      messageElems.Add(imageMessage);
      message.message_elem_array = messageElems;
      StringBuilder messageId = new StringBuilder(128);
       TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, string json_param, string user_data)=>{
        // Async message sending result
      });
            // The message ID messageId returned when the message is sent
}

Getting Message Sending Progress

TencentIMSDK.SetMsgElemUploadProgressCallback((Message message, int index, int cur_size, int total_size, string user_data)=>{
// message represents the message being sent.
// index represents the number of the file being uploaded.
// cur_size represents the size (in MB) of the file being uploaded.
// total_size represents the total size of all files being uploaded.
})

Receiving Messages

// Register a message receiving listener
TencentIMSDK.RecvNewMsgCallback((List<Message> message, string user_data)=>{
})

Meanings of Message Fields