InternalDataCollectionBase.cs

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using System.Collections;
using System.ComponentModel;
using System.Globalization;
 
namespace System.Data;
 
public class InternalDataCollectionBase : ICollection, IEnumerable
{
    internal static readonly CollectionChangeEventArgs s_refreshEventArgs = new CollectionChangeEventArgs(CollectionChangeAction.Refresh, null);
 
    [Browsable(false)]
    public virtual int Count => List.Count;
 
    [Browsable(false)]
    public bool IsReadOnly => false;
 
    [Browsable(false)]
    public bool IsSynchronized => false;
 
    [Browsable(false)]
    public object SyncRoot => this;
 
    protected virtual ArrayList List => null;
 
    public virtual void CopyTo(Array ar, int index)
    {
        List.CopyTo(ar, index);
    }
 
    public virtual IEnumerator GetEnumerator()
    {
        return List.GetEnumerator();
    }
 
    internal int NamesEqual(string s1, string s2, bool fCaseSensitive, CultureInfo locale)
    {
        if (fCaseSensitive)
        {
            if (string.Compare(s1, s2, ignoreCase: false, locale) != 0)
            {
                return 0;
            }
            return 1;
        }
        if (locale.CompareInfo.Compare(s1, s2, CompareOptions.IgnoreCase | CompareOptions.IgnoreKanaType | CompareOptions.IgnoreWidth) == 0)
        {
            if (string.Compare(s1, s2, ignoreCase: false, locale) != 0)
            {
                return -1;
            }
            return 1;
        }
        return 0;
    }
}