tencent cloud

// List of messages to be forwarded, which can contain combined messages but not group tips
var message = new Message
{
   message_conv_id = conv_id,
   message_conv_type = TIMConvType.kTIMConv_Group,
   message_elem_array = new List<Elem>{
    new Elem
   {
     elem_type = TIMElemType.kTIMElem_Merge,
     merge_elem_title = "Chat History of user1 and user2", // Title of the combined message
     merge_elem_message_array = new List<Message>
     {
      message1,
      message2
     },
     merge_elem_abstract_array = new List<string>
     {
      "user1:hello", "user2:hello" // Digest list of the combined message
     },
     merge_elem_compatible_text = "The current version does not support the message" // Compatibility text of the combined message. If the early SDK version does not support the combined message, the user will receive a text message with the content `compatibleText` by default.
   }},
};
StringBuilder messageId = new StringBuilder(128);
TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_Group, message, messageId, (int code, string desc, string json_param, string user_data)=>{
 // Async message sending result
});