/// <summary>
/// 为待监听的全部Item生成ClientHandles，
/// 根据配置信息将这些ClientHandles归档(Sum,Avg,Single)，
/// 并返回为之生成的ClientHandles
/// </summary>
/// <returns>生成的ClientHandles</returns>
private int[] SetupItems()
{
int handle = 1;
int id = 1;
List <int> result = new List <int>();
for (int i = 0; i < Config.Group.OpcItems.Length; i++)
{
foreach (var item in Config.Group.OpcItems[i].Items)
{
ItemRow ir = new ItemRow();
ir.ID = id;
ir.Name = item.Name;
ir.Strategy = item.Strategy;
ir.Handles = new List <int>();
ir.Data = new object[item.SubItems.Count];
foreach (var subItem in item.SubItems)
{
rowIdMap.Add(handle, id);
ir.Handles.Add(handle);
result.Add(handle);
itemIDs.Add(subItem.Value);
handle++;
}
itemTable.Add(ir);
id++;
}
}
return(result.ToArray());
}
private void Group_DataChange(int _TransactionID, int _NumItems, ref Array _ClientHandles, ref Array _ItemValues, ref Array _Qualities, ref Array _timeStamps)
{
//_ClientHandles可确定该条数据是哪个测点的
int id = 0;
for (int i = 1; i <= _NumItems; i++)
{
OPCAutomation.OPCQuality quality = (OPCAutomation.OPCQuality)_Qualities.GetValue(i);
int clientHandle = (int)_ClientHandles.GetValue(i);
id = (int)rowIdMap[clientHandle];
if (quality == OPCAutomation.OPCQuality.OPCQualityGood)
{
object value = _ItemValues.GetValue(i);
ItemRow ir = itemTable[id - 1];
//clientHandle-id可保证每次都覆盖clientHandle对应位置上的数据并保留本次没有更新到的数据
ir.Data[clientHandle - id] = value;
//重复赋值，但只取最后一次的值，待优化
ir.Timestamp = (DateTime)_timeStamps.GetValue(i);
}
else
{
errorCount++;
errorItems.Add(itemIDs[id - 1]);
}
}
Hashtable result = ProcessItemTable();
if (errorCount == 0)
{
OPCDataChanged(this, new OpcDataChangedEventArgs(Config.Type, result));
}
else
{
string message = OpcUnableToReadException.CreateErrorMessage(errorCount, errorItems);
OPCDataChanged(this, new OpcDataChangedEventArgs(Config.Type, result, message));
}
}
/// <summary>
/// 为待监听的全部Item生成ClientHandles，
/// 根据配置信息将这些ClientHandles归档(Sum,Avg,Single)，
/// 并返回为之生成的ClientHandles
/// </summary>
/// <returns>生成的ClientHandles</returns>
private int[] SetupItems()
{
int handle = 1;
int id = 1;
List<int> result = new List<int>();
for (int i = 0; i < Config.Group.OpcItems.Length; i++)
{
foreach (var item in Config.Group.OpcItems[i].Items)
{
ItemRow ir = new ItemRow();
ir.ID = id;
ir.Name = item.Name;
ir.Strategy = item.Strategy;
ir.Handles = new List<int>();
ir.Data = new object[item.SubItems.Count];
foreach (var subItem in item.SubItems)
{
rowIdMap.Add(handle, id);
ir.Handles.Add(handle);
result.Add(handle);
itemIDs.Add(subItem.Value);
handle++;
}
itemTable.Add(ir);
id++;
}
}
return result.ToArray();
}