?
Solved

sort data like Windows Explorer sorts files??

Posted on 2004-09-14
12
Medium Priority
?
332 Views
Last Modified: 2010-04-15
have a Windows datagrid whose column values are
(1,10,100,1000,101,10-1,103,11,1710,2).  When the column's sorted (the
column's of type String), it'll sort this way
[1,10,100,1000,101,10-1,103,11,1710,2], which is wrong.  But in Windows
Explorer, when there are files with these same names , Explorer will sort
them like this: [1,2,10,10-1,11,100,101,103,1000,1710], which is correct.

How can I emulate this Windows explorer sort in my column?

Thanks.
0
Comment
Question by:MyersA
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
  • 2
12 Comments
 
LVL 14

Accepted Solution

by:
AvonWyss earned 152 total points
ID: 12059180
Pad the strings with leading 0s.

string sortKey=columnValue.PadLeft(20, '0');
And then compare the sortkeys of the items you want to sort.
0
 
LVL 2

Author Comment

by:MyersA
ID: 12059487
Thanks.
Why does it sort correctly when I add the leading 0's?
0
 
LVL 14

Expert Comment

by:AvonWyss
ID: 12059505
because...
  1 will be 00001 (if padded to 5 digits)
  2 will be 00002
10 will be 00010
etc.
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 2

Author Comment

by:MyersA
ID: 12060171
And what about something like "1-100" or "10A"? How will it treat those?
0
 

Assisted Solution

by:hunor_nam
hunor_nam earned 148 total points
ID: 12062675
You could write youre own compare method to the grid...
Compare(object arg1, object arg2) from the IComparer interface.

It's easy to get something like this:
1,2,10,11,100,101,103,1000,1710,10-1,10-D

You would first check if the two items are numbers (isNum) if so, compare them normally, if bouth items are string, compare them as strings
IF one of the items is number and the other is string then the number is "smaller".
This way you could get a sort as described above... numbers in natural order, and then Strings in "natural" order.

If you don't understand something, just ask.

(Sorry i curently do not work in C#, this is the reason I don't give code, as i don't want to make syntax errors)
0
 
LVL 2

Author Comment

by:MyersA
ID: 12183167
I was assuming that Windows Explorer had a certain sorting mechanism that could be used. Isn't there an easier way to sort these without having to parse the string?
0
 
LVL 14

Expert Comment

by:AvonWyss
ID: 12183673
My solution for instance? The very first one?
0
 
LVL 14

Expert Comment

by:AvonWyss
ID: 12393799
TheLearnedOne, what is your recommendation?
0
 

Expert Comment

by:hunor_nam
ID: 12398408
Good question :)
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

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

Entity Framework is a powerful tool to help you interact with the DataBase but still doesn't help much when we have a Stored Procedure that returns more than one resultset. The solution takes some of out-of-the-box thinking; read on!
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
Suggested Courses

771 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