//
// Private helpers
//
private void Reset()
{
_entriesArray = new ArrayList();
_entriesTable = new Hashtable(_keyComparer);
_nullKeyEntry = null;
_version++;
}
/// <devdoc>
/// <para> Removes the entry at the specified index of the
/// <see cref='System.Collections.Specialized.NameObjectCollectionBase'/> instance.</para>
/// </devdoc>
protected void BaseRemoveAt(int index)
{
if (_readOnly)
{
throw new NotSupportedException(SR.CollectionReadOnly);
}
string?key = BaseGetKey(index);
if (key != null)
{
// remove from hashtable
_entriesTable.Remove(key);
}
else
{ // null key -- special case
// null out special 'null key' entry
_nullKeyEntry = null;
}
// remove from array
_entriesArray.RemoveAt(index);
_version++;
}
//
// Methods to add / remove entries
//
/// <devdoc>
/// <para>Adds an entry with the specified key and value into the
/// <see cref='System.Collections.Specialized.NameObjectCollectionBase'/> instance.</para>
/// </devdoc>
protected void BaseAdd(string?name, object?value)
{
if (_readOnly)
{
throw new NotSupportedException(SR.CollectionReadOnly);
}
NameObjectEntry entry = new NameObjectEntry(name, value);
// insert entry into hashtable
if (name != null)
{
if (_entriesTable[name] == null)
{
_entriesTable.Add(name, entry);
}
}
else
{ // null key -- special case -- hashtable doesn't like null keys
if (_nullKeyEntry == null)
{
_nullKeyEntry = entry;
}
}
// add entry to the list
_entriesArray.Add(entry);
_version++;
}
private void Reset(int capacity)
{
_entriesArray = new ArrayList(capacity);
_entriesTable = new Hashtable(capacity, _keyComparer);
_nullKeyEntry = null;
_version++;
}
/// <devdoc>
/// <para>Sets the value of the first entry with the specified key in the <see cref='System.Collections.Specialized.NameObjectCollectionBase'/>
/// instance, if found; otherwise, adds an entry with the specified key and value
/// into the <see cref='System.Collections.Specialized.NameObjectCollectionBase'/>
/// instance.</para>
/// </devdoc>
protected void BaseSet(string?name, object?value)
{
if (_readOnly)
{
throw new NotSupportedException(SR.CollectionReadOnly);
}
NameObjectEntry?entry = FindEntry(name);
if (entry != null)
{
entry.Value = value;
_version++;
}
else
{
BaseAdd(name, value);
}
}
/// <devdoc>
/// <para>Removes the entries with the specified key from the
/// <see cref='System.Collections.Specialized.NameObjectCollectionBase'/> instance.</para>
/// </devdoc>
protected void BaseRemove(string?name)
{
if (_readOnly)
{
throw new NotSupportedException(SR.CollectionReadOnly);
}
if (name != null)
{
// remove from hashtable
_entriesTable.Remove(name);
// remove from array
for (int i = _entriesArray.Count - 1; i >= 0; i--)
{
if (_keyComparer.Equals(name, BaseGetKey(i)))
{
_entriesArray.RemoveAt(i);
}
}
}
else
{ // null key -- special case
// null out special 'null key' entry
_nullKeyEntry = null;
// remove from array
for (int i = _entriesArray.Count - 1; i >= 0; i--)
{
if (BaseGetKey(i) == null)
{
_entriesArray.RemoveAt(i);
}
}
}
_version++;
}
//
// Access by name
//
/// <devdoc>
/// <para>Gets the value of the first entry with the specified key from
/// the <see cref='System.Collections.Specialized.NameObjectCollectionBase'/> instance.</para>
/// </devdoc>
protected object?BaseGet(string?name)
{
NameObjectEntry?e = FindEntry(name);
return((e != null) ? e.Value : null);
}
//
// Access by name
//
/// <devdoc>
/// <para>Gets the value of the first entry with the specified key from
/// the <see cref='System.Collections.Specialized.NameObjectCollectionBase'/> instance.</para>
/// </devdoc>
protected object?BaseGet(string?name)
{
NameObjectEntry?e = FindEntry(name);
return(e?.Value);
}