SortedList.GetKey(Int32) Method is used to get the key at the specified index of a SortedList object.
Syntax:
public virtual object GetKey (int index);
Here, index is the zero-based index of the key to get.
Return Value: This method returns the key at the specified index of the SortedList object.
Exception: This method throws ArgumentOutOfRangeException
if the index is outside the range of valid indexes for the SortedList object.
Below programs illustrate the use of above-discussed method:
Example 1:
// C# code to get the key at // the specified index of a // SortedList object using System;
using System.Collections;
class Geeks {
// Main Method
public static void Main(String[] args)
{
// Creating a SortedList of integers
SortedList mylist = new SortedList();
// Adding elements to SortedList
mylist.Add( "key1" , "C++" );
mylist.Add( "key2" , "Java" );
mylist.Add( "key3" , "DSA" );
mylist.Add( "key4" , "Python" );
mylist.Add( "key5" , "C#" );
// storing the value of
// index that needed by
// used into a variable
int i = 2;
// getting the key at index 2
Console.WriteLine( "Key at index {0} is {1}" ,
i, mylist.GetKey(i));
}
} |
Output:
Key at index 2 is key3
Example 2:
// C# code to get the key at // the specified index of a // SortedList object using System;
using System.Collections;
class Geeks {
// Main Method
public static void Main(String[] args)
{
// Creating a SortedList of integers
SortedList mylist = new SortedList();
// Adding elements to SortedList
mylist.Add( "First" , "Ram" );
mylist.Add( "Second" , "Shyam" );
mylist.Add( "Third" , "Mohit" );
mylist.Add( "Fourth" , "Rohit" );
mylist.Add( "Fifth" , "Manish" );
// storing the value of
// index that needed by
// used into a variable
// it will throw an exception
// as index is out of range of
// valid indexes of SortedList object
int i = 7;
// getting the key at index 7
Console.WriteLine( "Key at index {0} is {1}" ,
i, mylist.GetKey(i));
}
} |
Runtime Error:
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: