Solved

HashTable Remove - Search Functionality.

Posted on 2004-04-14
2
304 Views
Last Modified: 2010-04-15
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.
0
Comment
Question by:steve_mick972
2 Comments
 
LVL 12

Accepted Solution

by:
dfiala13 earned 500 total points
ID: 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);
}
0
 
LVL 1

Expert Comment

by:Troy_Lyne
ID: 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);
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…
I designed this idea while studying technology in the classroom.  This is a semester long project.  Students are asked to take photographs on a specific topic which they find meaningful, it can be a place or situation such as travel or homelessness.…

932 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now