Access Data From Ordered Dictionary

Ordered Dictionary

When we need to represent the data as key/ pair, the best option is Ordered Dictionary. We later access the data using key or index.

 

Namespace

We need to use two namespaces.

using System.Collections.Specialized;
using System.Collections;

We use System.Collections namespace if we need to retrieve the data using ICollection.

 

Code

OrderedDictionary person = new OrderedDictionary();
person.Add("Name","Salman");
person.Add("Address","Pakistan");

Retrieve the data using LINQ Element Query Operator.

for(int i=0; i<person.Count; i++)
{
var item = person.ElementAt(i);
Console.WriteLine("Key: " + item.Key);
Console.WriteLine("Value: " + item.Value);
}

Retrieve the data usnig ICollection.

ICollection keyCOllection = person.Keys;
            ICollection valueCollection = person.Values;

            String[] myKeys = new String[person.Count];
            String[] myValues = new String[person.Count];

            keyCOllection.CopyTo(myKeys, 0);
            valueCollection.CopyTo(myValues, 0);

for(int i=0; i<person.Count; i++)
{
Console.WriteLine("Key: " + myKeys[i]);
Console.WriteLine("Value: " + myValues[i]);
}

I hope you understand.