public int ClearConvHistroy()//清除会议历史记录 { try { LogManager.SystemLog.Debug(string.Format("Start UC_SDK_ClearConvHistroy")); int iRet = UCInterface.UC_SDK_ClearConvHistroy(); if (iRet != 0) { LogManager.SystemLog.Error(string.Format("Start UC_SDK_ClearConvHistroy error {0}", iRet)); return(iRet); } LogManager.SystemLog.Debug(string.Format("End UC_SDK_ClearConvHistroy")); return(iRet); } catch (System.Exception ex) { LogManager.SystemLog.Error(ex.ToString()); return(-1); } }