databinding to a dictionary

[Dan Holmes]

I have a custom dictionary and i would like to bind it to a control.
Since Dictionary doesn't implement IList i would have to write it. Is
the only way to do this to keep another collection that matches the key
in the dictionary to an index in the collection?

dan

Here is the code i want to add IList to.

public interface ISystemMessageD ata
{
String MessageID { get; set;}
String WhseID { get; set;}
String Flag { get; set;}
String MessageDate { get; set;}
String UserID { get; set;}
String Message { get; set;}
String PersonID { get; set;}
String MachineName { get; set;}
String DeviceID { get; set;}
String Subject { get; set;}
String ToEmail { get; set;}
String EmailFlag { get; set;}
String FromEmail { get; set;}
}
[Serializable]
public class RemoteDataColle ction<TKey, TValue> :
System.Collecti ons.Generic.Dic tionary<TKey, TValue>
{
public RemoteDataColle ction() { }
protected
RemoteDataColle ction(System.Ru ntime.Serializa tion.Serializat ionInfo
info, System.Runtime. Serialization.S treamingContext context) :
base(info, context) { }
}

[Serializable]
public class SystemMessageDa taCollection :
RemoteDataColle ction<String, ISystemMessageD ata>
{
public SystemMessageDa taCollection() { }
protected
SystemMessageDa taCollection(Sy stem.Runtime.Se rialization.Ser ializationInfo
info, System.Runtime. Serialization.S treamingContext context):base(i nfo,
context){}
}

[Dan Holmes]

Here is what i did and i must have done something wrong cause it doesn't
work. What did i do wrong?

[Serializable]
public class RemoteDataColle ction<TKey, TValue> :
System.Collecti ons.Generic.Dic tionary<TKey, TValue>, IList<TValue>
{
protected System.Collecti ons.Generic.Lis t<TValue> _list = null;
public RemoteDataColle ction()
{
_list = new List<TValue>();
}
protected
RemoteDataColle ction(System.Ru ntime.Serializa tion.Serializat ionInfo
info, System.Runtime. Serialization.S treamingContext context) :
base(info, context) { }

public virtual void Add(TKey key, TValue value)
{
base.Add(key, value);
_list.Add(value );
}
public virtual bool Remove(TKey key)
{
TValue value;
bool b = this.TryGetValu e(key, out value);
_list.Remove(va lue);
base.Remove(key );
return b;
}

#region IList<TValue> Members

public int IndexOf(TValue item)
{
return _list.IndexOf(i tem);
}

public void Insert(int index, TValue item)
{
throw new Exception("The method or operation is not
implemented: RemoveAt.");
}

public void RemoveAt(int index)
{
throw new Exception("The method or operation is not
implemented: RemoveAt.");
}

public TValue this[int index]
{
get
{
throw new Exception("The method or operation is not
implemented.");
}
set
{
throw new Exception("The method or operation is not
implemented.");
}
}

#endregion

#region ICollection<TVa lue> Members

public void Add(TValue item)
{

((System.Collec tions.Generic.I Collection<TVal ue>)base.Values ).Add(item);
}

public bool Contains(TValue item)
{
return
((System.Collec tions.Generic.I Collection<TVal ue>)base.Values ).Contains(item );
}

public void CopyTo(TValue[] array, int arrayIndex)
{

((System.Collec tions.Generic.I Collection<TVal ue>)base.Values ).CopyTo(array,
arrayIndex);
}

public bool IsReadOnly
{
get { return
((System.Collec tions.Generic.I Collection<TVal ue>)base.Values ).IsReadOnly; }
}

public bool Remove(TValue item)
{

((System.Collec tions.Generic.I Collection<TVal ue>)base.Values ).Remove(item) ;
return true;
}

#endregion

#region IEnumerable<TVa lue> Members

public new IEnumerator<TVa lue> GetEnumerator()
{
return this.GetEnumera tor();
}

#endregion
}

Dan Holmes wrote:

I have a custom dictionary and i would like to bind it to a control.
Since Dictionary doesn't implement IList i would have to write it. Is
the only way to do this to keep another collection that matches the key
in the dictionary to an index in the collection?