public static void ConvSetDraft() { string conv_id = "287646"; DraftParam param = new DraftParam(); param.draft_user_define = "你好啊"; param.draft_edit_time = (ulong)new DateTimeOffset(DateTime.UtcNow).ToUnixTimeMilliseconds(); Message message = new Message(); param.draft_msg = message; TIMResult res = TencentIMSDK.ConvSetDraft(conv_id, TIMConvType.kTIMConv_C2C, param); addDataToConsole(res); }