//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";
}
}