C# | Remove from the specified index of the StringCollection
Last Updated :
01 Feb, 2019
StringCollection class is a new addition to the .NET Framework class library that represents a collection of strings. StringCollection class is defined in the System.Collections.Specialized namespace.
StringCollection.RemoveAt(Int32) method is used to remove the string at the specified index of the StringCollection.
Syntax:
public void RemoveAt (int index);
Here, index is the zero-based index of the string to remove.
Exception: This method will give ArgumentOutOfRangeException if the index is less than zero or index is equal to or greater than Count.
Note: This method is an O(n) operation, where n is Count.
Below programs illustrate the use of StringCollection.RemoveAt(Int32) Method:
Example 1:
using System;
using System.Collections;
using System.Collections.Specialized;
class GFG {
public static void Main()
{
StringCollection myCol = new StringCollection();
String[] myArr = new String[] { "A" , "B" , "C" , "D" , "E" };
myCol.AddRange(myArr);
Console.WriteLine( "Elements in StringCollection myCol are : " );
foreach (Object obj in myCol)
Console.WriteLine(obj);
myCol.RemoveAt(3);
Console.WriteLine( "Elements in StringCollection myCol are : " );
foreach (Object obj in myCol)
Console.WriteLine(obj);
}
}
|
Output:
Elements in StringCollection myCol are :
A
B
C
D
E
Elements in StringCollection myCol are :
A
B
C
E
Example 2:
using System;
using System.Collections;
using System.Collections.Specialized;
class GFG {
public static void Main()
{
StringCollection myCol = new StringCollection();
String[] myArr = new String[] { "1" , "2" , "3" , "4" , "5" };
myCol.AddRange(myArr);
Console.WriteLine( "Elements in StringCollection myCol are : " );
foreach (Object obj in myCol)
Console.WriteLine(obj);
myCol.RemoveAt(-5);
Console.WriteLine( "Elements in StringCollection myCol are : " );
foreach (Object obj in myCol)
Console.WriteLine(obj);
}
}
|
Output:
Unhandled Exception:
System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Reference:
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