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StringCollection Class in C#
The StringCollection class represents a collection of strings. Following are the properties of the StringCollection class −
| Sr.no | Property & Description |
|---|---|
| 1 | Count Gets the number of key/values pairs contained in the OrderedDictionary collection. |
| 2 | IsReadOnly Gets a value indicating whether the StringCollection is read-only.. |
| 3 | IsSynchronized Gets a value indicating whether access to the StringCollection is synchronized (thread safe). |
| 4 | Item[Int32] Gets or sets the element at the specified index. |
| 5 | SyncRoot Gets an object that can be used to synchronize access to the StringCollection. |
Following are the methods of the StringCollection class −
| Sr.no | Method & Description |
|---|---|
| 1 | Add(String) Adds a string to the end of the StringCollection. |
| 2 | AddRange(String[]) Copies the elements of a string array to the end of the StringCollection. |
| 3 | Clear() Removes all the strings from the StringCollection. |
| 4 | Contains(String) Determines whether the specified string is in the StringCollection. |
| 5 | CopyTo(String[],Int32) Copies the entire StringCollection values to a onedimensional array of strings, starting at the specified index of the target array. |
| 6 | Equals(Object) Determines whether the specified object is equal to the current object. (Inherited from Object) |
| 7 | GetEnumerator() Returns a StringEnumerator that iterates through the StringCollection. |
Let us now see some examples
To check if two StringCollection objects are equal, the code is as follows −
Example
using System;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
StringCollection strCol1 = new StringCollection();
strCol1.Add("Accessories");
strCol1.Add("Books");
strCol1.Add("Electronics");
Console.WriteLine("StringCollection1 elements...");
foreach (string res in strCol1) {
Console.WriteLine(res);
}
StringCollection strCol2 = new StringCollection();
strCol2.Add("Accessories");
strCol2.Add("Books");
strCol2.Add("Electronics");
Console.WriteLine("StringCollection2 elements...");
foreach (string res in strCol1) {
Console.WriteLine(res);
}
Console.WriteLine("Both the String Collections are equal? = "+strCol1.Equals(strCol2));
}
}Output
This will produce the following output −
StringCollection1 elements... Accessories Books Electronics StringCollection2 elements... Accessories Books Electronics Both the String Collections are equal? = False
To check if the specified string is in the StringCollection, the code is as follows −
Example
using System;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
StringCollection stringCol = new StringCollection();
String[] arr = new String[] { "100", "200", "300", "400", "500" };
Console.WriteLine("Array elements...");
foreach (string res in arr) {
Console.WriteLine(res);
}
stringCol.AddRange(arr);
Console.WriteLine("Does the specified string is in the StringCollection? = "+stringCol.Contains("800"));
}
}Output
This will produce the following output −
Array elements... 100 200 300 400 500 Does the specified string is in the StringCollection? = False
Updated on: 10-Dec-2019
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