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Question

what is use of hast table?? can we use directory in .net framework 3.5?? what is exactly key - value pair?? plz give detail explanation..

Sujeet Suman · Answer

We should prefer Dictionary over Hashtable. Because Dictionary is a generic type, Hashtable is not. That means you get type safety with Dictionary, because you can't insert any random object into it, and you don't have to cast the values you take out.

Raja T · Answer

yes you can use most prefer to Dictionary. http://www.dotnetperls.com/dictionary

Rajeesh Menoth · Answer

Hi, Ref the following 1) http://www.c-sharpcorner.com/UploadFile/e83792/C-Sharp-nethash-table-class/ 2) http://www.c-sharpcorner.com/UploadFile/mahesh/Hashtable11082005171748PM/Hashtable.aspx

Raja T · Answer

Hi, yes you can use and key-value pair is similar or just like to query string concept but not querystring. Dictionary is a generic type, allowing: static typing (and compile-time verification) use without boxing If you are .NET 2.0 or above, you should prefer Dictionary (and the other generic collections) Hashtable is also collection which takes a key corresponding to each values. If you want to find something in a hashtable you dont have to go through each value in hashtable, instead search for key values and is faster. Checkout below urls http://stackoverflow.com/questions/876656/difference-between-dictionary-and-hashtable http://www.codeproject.com/Tips/602537/Hashtable-vs-Dictionary http://www.c-sharpcorner.com/forums/thread/194369/hash-table-and-dictionary-in-C-Sharp.aspx

Munesh Sharma · Answer

Hashtable represents a collection of key/value pairs which maps keys to value. Any non-null object can be used as a key but a value can. We can retrieve items from hashTable to provide the key . Both keys and values are Objects. Hashtable ht = new Hashtable(); ht.Add("1", "Sunday"); ht.Add("2", "Monday"); if you want to check data ht.Contains("1") The above code return true if item exist else false. for more go on this link http://csharp.net-informations.com/collection/csharp-hashtable.htm

Swapnil Mache · Answer

can i use dictionary instead of hash table???

Swapnil Mache · Answer

thank you...:)

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