tencent cloud

// Pull historical one-to-one messages
// Set `msg_getmsglist_param_last_msg` to `null` for the first pull
// `msg_getmsglist_param_last_msg` can be the last message in the returned message list for the second pull.
var get_message_list_param = new MsgGetMsgListParam
    {
      msg_getmsglist_param_last_msg = LastMessage
    };
TIMResult res = TencentIMSDK.MsgGetMsgList(conv_id, TIMConvType.kTIMConv_C2C, get_message_list_param, (int code, string desc, string user_data) => {
  // Process the callback logic
});

// Pull historical group messages
// Set `msg_getmsglist_param_last_msg` to `null` for the first pull
// `msg_getmsglist_param_last_msg` can be the last message in the returned message list for the second pull.
var get_message_list_param = new MsgGetMsgListParam
    {
      msg_getmsglist_param_last_msg = LastMessage
    };
TIMResult res = TencentIMSDK.MsgGetMsgList(conv_id, TIMConvType.kTIMConv_Group, get_message_list_param, (int code, string desc, string user_data) => {
  // Process the callback logic
});