MsgSendMessage API (Details) to specify the list of group members to receive the message and send the message.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_Text,text_elem_content = Input.text}},message_target_group_member_array = userid_list, // Specify the list of `UserID` values of group members to receive the message};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});
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