Question

HashTable Remove - Search Functionality.

Asked by: steve_mick972

Hi,

Here is my Hashtable.

HasTable myHash = new HashTable();

myHash.Add("~Chapter1-example1","A");
myHash.Add("~Chapter1-example2","B");
myHash.Add("~Chapter1-example3","C");
myHash.Add("~Chapter1-example4","D");


myHash.Add("~Chapter2-example1","A");
myHash.Add("~Chapter2-example2","B");
myHash.Add("~Chapter2-example3","C");
myHash.Add("~Chapter2-example4","D");
myHash.Add("~Chapter2-example5","E");



How can i remove all elements with key = "~Chapter1-"

kind of like a partial search, just want to remove all the keys, that start with the following key.



thanks,
steve.

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Asked On
2004-04-14 at 16:33:44ID20954486
Tags

hashtable

Topic

C# Programming Language

Participating Experts
2
Points
500
Comments
2

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Answers

 

by: dfiala13Posted on 2004-04-14 at 19:04:53ID: 10829467

Afraid you have to loop..

IDictionaryEnumerator en = myHash.GetEnumerator();

while ( en.MoveNext() )
{
         string sKey = (string)en.Key;
         if(sKey.IndexOf("partialkey") == 0)
               myHash.Remove(sKey);
}

 

by: Troy_LynePosted on 2004-04-15 at 13:38:38ID: 10836834

Nest hashtables:

myHashCh1.Add("example1","A");
myHashCh1.Add("example2","B");
myHashCh1.Add("example3","C");
myHashCh1.Add("example4","D");

myHashCh2.Add("example1","A");
myHashCh2.Add("example2","B");
myHashCh2.Add("example3","C");
myHashCh2.Add("example4","D");
myHashCh2.Add("example5","E");

myHash.Add("~Chapter1-", myHashCh1);
myHash.Add("~Chapter2-", myHashCh2);

20120131-EE-VQP-002

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