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115 lines
2.8 KiB
C#
115 lines
2.8 KiB
C#
namespace OPCDA.NET
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{
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using System;
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using System.Collections;
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using System.Threading;
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internal class ItemCollection : CollectionBase
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{
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private Mutex mtx = new Mutex();
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internal void Add(ItemDef gItem)
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{
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this.Lock();
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base.List.Add(gItem);
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this.Unlock();
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}
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internal bool Contains(string name)
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{
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this.Lock();
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IEnumerator enumerator = base.List.GetEnumerator();
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while (enumerator.MoveNext())
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{
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ItemDef current = (ItemDef) enumerator.Current;
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if (name == current.OpcIDef.ItemID)
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{
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this.Unlock();
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return true;
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}
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}
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this.Unlock();
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return false;
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}
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public ItemDef FindClientHandle(int Hnd)
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{
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this.Lock();
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IEnumerator enumerator = base.List.GetEnumerator();
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while (enumerator.MoveNext())
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{
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ItemDef current = (ItemDef) enumerator.Current;
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if (Hnd == current.OpcIDef.HandleClient)
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{
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this.Unlock();
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return current;
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}
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}
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this.Unlock();
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return null;
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}
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internal int IndexOf(string name)
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{
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this.Lock();
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for (int i = 0; i < base.List.Count; i++)
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{
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if (base.List[i] != null)
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{
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ItemDef def = (ItemDef) base.List[i];
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if (name == def.OpcIDef.ItemID)
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{
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this.Unlock();
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return i;
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}
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}
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}
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this.Unlock();
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return -1;
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}
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internal ItemDef Item(int Index)
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{
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this.Lock();
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ItemDef def = (ItemDef) base.List[Index];
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this.Unlock();
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return def;
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}
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public ItemDef Item(string name)
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{
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this.Lock();
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IEnumerator enumerator = base.List.GetEnumerator();
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while (enumerator.MoveNext())
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{
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ItemDef current = (ItemDef) enumerator.Current;
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if (name == current.OpcIDef.ItemID)
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{
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this.Unlock();
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return current;
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}
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}
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this.Unlock();
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return null;
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}
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private void Lock()
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{
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this.mtx.WaitOne();
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}
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internal void Remove(ItemDef gItem)
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{
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this.Lock();
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base.List.Remove(gItem);
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this.Unlock();
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}
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private void Unlock()
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{
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this.mtx.ReleaseMutex();
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}
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}
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}
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