Solved

Limit to the list

Posted on 2003-10-23
6
282 Views
Last Modified: 2010-04-16
Greetings,

I have a ComboBox defined as "DropDown" style. I want to limit the user's input, so the user can only type/pick the item from the drop down list.

Thanks in Advance.
0
Comment
Question by:mrong
[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
  • 3
  • 2
6 Comments
 
LVL 1

Accepted Solution

by:
jlach earned 50 total points
ID: 9610102
You would want to do this either using the KeyUP event or the TextChanged event ... loop throug the items in the combo box (foreach.... in ....) .. if the strings found, they can type, if not, stop them from typing.. if using keyup.. you can use e.handled = true .. if using textchanged, make sure you keep a variable of the text before the text changed event (KeyDown maybe?) and then set the text back to that variable
0
 

Author Comment

by:mrong
ID: 9611318
Please explain "if the strings found, they can type, if not, stop them from typing". Do you mean check the user's input character by character or the whole string? Please provide more details.
Thanks.
0
 
LVL 1

Expert Comment

by:jlach
ID: 9612596
check the current string typed in the combo box against all items in the combo box, if the string is not found to be contained in any of the items, set the text back to what it was before the keypress
0
SharePoint Admin?

Enable Your Employees To Focus On The Core With Intuitive Onscreen Guidance That is With You At The Moment of Need.

 

Author Comment

by:mrong
ID: 9613973
Hi jlach,

I found a sample code at the following URL and I think it fits my needs. But I am not sure how to put into my code. Could you help me? Thanks.

http://www.thecodeproject.com/cs/combobox/csautocomplete.asp
0
 
LVL 15

Expert Comment

by:SRigney
ID: 9616604
You may be ok with just changing the DropDownStyle to DropDownList.
This prevents typing in new items, and as the user types the list finds the closest item to the typing.
0
 

Author Comment

by:mrong
ID: 9616647
I tried that already. But the current data won't be show up in the ComboBox. Those list Items are there.
0

Featured Post

Independent Software Vendors: 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!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Name Space error VS2015 1 48
linq, c# 8 52
C# Get Current Exchange Rate from XE 9 42
Inserting LocalDB Table to SQL Server C# 3 51
In order to hide the "ugly" records selectors (triangles) in the rowheaders, here are some suggestions. Microsoft doesn't have a direct method/property to do it. You can only hide the rowheader column. First solution, the easy way The first sol…
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…
Suggested Courses

759 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