public bool AddItem(Tag bi)
{
try
{
#region *********集合已包含此Tag,则退出*************************
foreach (Tag item in this.Tags)
{
if (item.TagName == bi.TagName)
{
MessageBox.Show("Tag重复：在在重复的Tag点", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(false);
}
}
#endregion
OPCItems items = this.OPCGroup.OPCItems;//根据指定的组类别，取出组下的标签集合
Func <Tag, int> f = p => { if (p != null)
{
return(p.ExtraAs <DaExtra>().ItmHandleClient + 1);
}
return(0); };
int itmHandleBegin = f(Tags.LastOrDefault());//itmHandleBegin的逻辑为最后一个标签itmHandle值+1
//关键，此步骤将标签添加入OPCclient的监听列表中
OPCItem ki = items.AddItem(bi.OpcTagName, itmHandleBegin);
bi.ExtraAs <DaExtra>().ItmHandleClient = itmHandleBegin;
//bi.DataTypeName = DaOpcTypes.GetEnumTypeRemarkByValue(ki.CanonicalDataType);
bi.ExtraAs <DaExtra>().ItmHandleServer = ki.ServerHandle;
Tags.Add((Tag)(Object)bi);
AddItemsComplete?.Invoke(this);
return(true);
}
catch (Exception)
{
throw;
}
}
public IGroup AddItems(List <Tag> biList)
{
try
{
#region 入的标签集合为空时，直接返回
if (biList.Count == 0)
{
return(this);
}
#endregion
#region 当前标签集合已包含此Tag,则退出
if (Tags.Count(p => biList.Select(b => b.TagName).Contains(p.TagName)) != 0)
{
MessageBox.Show("Tag重复：在在重复的Tag点", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(this);
}
#endregion
//根据组名，取出组下的子集合
OPCItems items = this.OPCGroup.OPCItems;
int itmHandleBegin;
int NUMITEMS;
Array OPCItemIDs;
Array ItemClientHandles;
Array ItemServerHandles;
Array AddItemServerErrors;
Func <Tag, int> f = (p => p != null ? p.ExtraAs <DaExtra>().ItmHandleClient : 0);
itmHandleBegin = f(Tags.LastOrDefault()); //itmHandleBegin的逻辑为最后一个标签itmHandle值
NUMITEMS = biList.Count() + 1; //OPCitem集合元素是以1为数组的基数,例：如果新增5个标签的话，就需要创建一个长度为6的标签，
OPCItemIDs = Array.CreateInstance(typeof(string), NUMITEMS);
ItemClientHandles = Array.CreateInstance(typeof(int), NUMITEMS);
ItemServerHandles = Array.CreateInstance(typeof(int), NUMITEMS);
AddItemServerErrors = default(System.Array);
//标签赋值后加入daTags
for (int i = 1; i < NUMITEMS; i++)
{
OPCItemIDs.SetValue(biList[i - 1].OpcTagName, i);
ItemClientHandles.SetValue(itmHandleBegin + i, i);
biList[i - 1].ExtraAs <DaExtra>().ItmHandleClient = itmHandleBegin + i;
Tags.Add((Tag)(Object)biList[i - 1]);
}
//关键，此步骤将标签添加入OPCclient的监听列表中
items.AddItems(biList.Count, ref OPCItemIDs, ref ItemClientHandles, out ItemServerHandles, out AddItemServerErrors);
#region ***********判断tag点是否正常监听************
for (short i = 1; i < NUMITEMS; i++)
{
if ((int)AddItemServerErrors.GetValue(i) == 0) //If the item was added successfully then allow it to be used.
{
Tags[i - 1].Message = "OPC Add Item Successful";
Tags[i - 1].Enabled = true;
//设置标签的数据类型及ServerHandle
OPCItem ki = items.GetOPCItem((int)ItemServerHandles.GetValue(i));
//biList[i - 1].DataTypeName = DaOpcTypes.GetEnumTypeRemarkByValue(ki.CanonicalDataType);
biList[i - 1].DataType = DaOpcTypes.GetEnumTypeByValue(ki.CanonicalDataType);
biList[i - 1].ExtraAs <DaExtra>().ItmHandleServer = (int)ItemServerHandles.GetValue(i);
}
else
{
Tags[i - 1].Message = "OPC Add Item Fail";
Tags[i - 1].Enabled = false;
//ItemServerHandles(i) = 0; // If the handle was bad mark it as empty
//OPCItemValue(i).Enabled = false;
//OPCItemValue(i).Text = "OPC Add Item Fail";
}
}
#endregion
AddItemsComplete?.Invoke(this);
return(this);
}
catch (Exception e)
{
throw;
}
}