//多参数读取 static public void GetItems(MyServer server, string[] itemID, out string[] type, out string[] value) { int[] itemHANDLES = new int[] { 0 }; VarEnum[] arrayType = new VarEnum[] { VarEnum.VT_EMPTY }; MyVariant[] returnValue = null; server.AddItems(itemID, out itemHANDLES, out arrayType); server.ReadItems(itemID, itemHANDLES, arrayType, out returnValue); type = new string[returnValue.Length]; value = new string[returnValue.Length]; for (int i = 0; i < returnValue.Length; i++) { type[i] = MyServer.VarEnumToString(arrayType[i]); if (returnValue != null) { value[i] = returnValue[i].GetStringValue(); } else { value[i] = "null"; } } }
/* * 作者:梁泽逍 * 时间:2017年3月7日 * 目的:第一次重构代码,将主页面main的OPC操作分离到此类中 * */ //单参数读取 static public void GetItem(MyServer server, string[] itemID, out string type, out string value) { int[] itemHANDLES = new int[] { 0 }; VarEnum[] arrayType = new VarEnum[] { VarEnum.VT_EMPTY }; MyVariant[] returnValue = null; server.AddItems(itemID, out itemHANDLES, out arrayType); type = MyServer.VarEnumToString(arrayType[0]); server.ReadItems(itemID, itemHANDLES, arrayType, out returnValue); if (returnValue != null) { value = returnValue[0].GetStringValue(); } else { value = "null"; } }