A collection of elements of type String : CollectionBase « Collections Data Structure « C# / C Sharp






A collection of elements of type String

   
// 
// Copyright (c) 2004-2006 Jaroslaw Kowalski <jaak@jkowalski.net>
// 
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//   contributors may be used to endorse or promote products derived from this
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#if NETCF

// a substitute for the missing .NET CF Class

using System;
using System.Collections;
using System.Text;

namespace System.Collections.Specialized
{
    /// <summary>
    /// A collection of elements of type String
    /// </summary>
    internal class StringCollection: System.Collections.CollectionBase
    {
        /// <summary>
        /// Initializes a new empty instance of the StringCollection class.
        /// </summary>
        public StringCollection()
        {
            // empty
        }

        /// <summary>
        /// Initializes a new instance of the StringCollection class, containing elements
        /// copied from an array.
        /// </summary>
        /// <param name="items">
        /// The array whose elements are to be added to the new StringCollection.
        /// </param>
        public StringCollection(String[]items)
        {
            this.AddRange(items);
        }

        /// <summary>
        /// Initializes a new instance of the StringCollection class, containing elements
        /// copied from another instance of StringCollection
        /// </summary>
        /// <param name="items">
        /// The StringCollection whose elements are to be added to the new StringCollection.
        /// </param>
        public StringCollection(StringCollection items)
        {
            this.AddRange(items);
        }

        /// <summary>
        /// Adds the elements of an array to the end of this StringCollection.
        /// </summary>
        /// <param name="items">
        /// The array whose elements are to be added to the end of this StringCollection.
        /// </param>
        public virtual void AddRange(String[]items)
        {
            foreach (String item in items)
            {
                this.List.Add(item);
            }
        }

        /// <summary>
        /// Adds the elements of another StringCollection to the end of this StringCollection.
        /// </summary>
        /// <param name="items">
        /// The StringCollection whose elements are to be added to the end of this StringCollection.
        /// </param>
        public virtual void AddRange(StringCollection items)
        {
            foreach (String item in items)
            {
                this.List.Add(item);
            }
        }

        /// <summary>
        /// Adds an instance of type String to the end of this StringCollection.
        /// </summary>
        /// <param name="value">
        /// The String to be added to the end of this StringCollection.
        /// </param>
        public virtual void Add(String value)
        {
            this.List.Add(value);
        }

        /// <summary>
        /// Determines whether a specfic String value is in this StringCollection.
        /// </summary>
        /// <param name="value">
        /// The String value to locate in this StringCollection.
        /// </param>
        /// <returns>
        /// true if value is found in this StringCollection;
        /// false otherwise.
        /// </returns>
        public virtual bool Contains(String value)
        {
            return this.List.Contains(value);
        }

        /// <summary>
        /// Return the zero-based index of the first occurrence of a specific value
        /// in this StringCollection
        /// </summary>
        /// <param name="value">
        /// The String value to locate in the StringCollection.
        /// </param>
        /// <returns>
        /// The zero-based index of the first occurrence of the _ELEMENT value if found;
        /// -1 otherwise.
        /// </returns>
        public virtual int IndexOf(String value)
        {
            return this.List.IndexOf(value);
        }

        /// <summary>
        /// Inserts an element into the StringCollection at the specified index
        /// </summary>
        /// <param name="index">
        /// The index at which the String is to be inserted.
        /// </param>
        /// <param name="value">
        /// The String to insert.
        /// </param>
        public virtual void Insert(int index, String value)
        {
            this.List.Insert(index, value);
        }

        /// <summary>
        /// Gets or sets the String at the given index in this StringCollection.
        /// </summary>
        public virtual String this[int index]
        {
            get { return (String)this.List[index]; }
            set { this.List[index] = value; }
        }

        /// <summary>
        /// Removes the first occurrence of a specific String from this StringCollection.
        /// </summary>
        /// <param name="value">
        /// The String value to remove from this StringCollection.
        /// </param>
        public virtual void Remove(String value)
        {
            this.List.Remove(value);
        }

        /// <summary>
        /// Type-specific enumeration class, used by StringCollection.GetEnumerator.
        /// </summary>
        public class Enumerator: System.Collections.IEnumerator
        {
            private System.Collections.IEnumerator wrapped;

            public Enumerator(StringCollection collection)
            {
                this.wrapped = ((System.Collections.CollectionBase)collection).GetEnumerator();
            }

            public String Current
            {
                get { return (String)(this.wrapped.Current); }
            }

            object System.Collections.IEnumerator.Current
            {
                get { return (String)(this.wrapped.Current); }
            }

            public bool MoveNext()
            {
                return this.wrapped.MoveNext();
            }

            public void Reset()
            {
                this.wrapped.Reset();
            }
        }

        /// <summary>
        /// Returns an enumerator that can iterate through the elements of this StringCollection.
        /// </summary>
        /// <returns>
        /// An object that implements System.Collections.IEnumerator.
        /// </returns>        
        public new virtual StringCollection.Enumerator GetEnumerator()
        {
            return new StringCollection.Enumerator(this);
        }
    }
}

#endif

   
    
    
  








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