Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

ComboBox issues in .Net 2008 C# Windows Forms application

Posted on 2012-03-20
4
Medium Priority
?
268 Views
Last Modified: 2012-03-20
I have a simple combobox that is populated using a dataset which gets data from a SQL server. This combobox (cmb1) is populated during the form's Load event

On the cmb1_SelectedIndexChanged event, I have another combobox (cmb2) populating based on the cmb1's value.

Problem is, whe the form loads, the second combo box is getting populated with the first element in cmb1. I need cmb2 to remain blank until the user selects something in cmb1.
0
Comment
Question by:CodeWrangler
[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
4 Comments
 
LVL 75

Accepted Solution

by:
käµfm³d   👽 earned 2000 total points
ID: 37745091
Have you tried checking that something is selected:

protected void cmb1_SelectedIndexChanged(object sender, EventArgs e)
{
    if (cmb1.SelectedIndex >= 0)
    {
        // Load cmd2
    }
}

Open in new window

0
 

Author Comment

by:CodeWrangler
ID: 37745107
Yep, thats is exactly what I am doing. As a temporary workaround, I am putting something in index 0 which I know will not return results from the database.
0
 

Author Comment

by:CodeWrangler
ID: 37745191
Figured it out. Thanks Kaufmed. Even though you suggested something I had already tried, it got me thinking on something I did incorrectly.
0
 

Author Comment

by:CodeWrangler
ID: 37745408
In case someone wanders in here for any combobox issues.. if you are wondering why the _SelectedIndexChanged event is firing when trying to populate comboxes using SQL.. use:

if (cmbKey2.SelectedIndex > -1 && cmbKey2.ContainsFocus == true)
            {....}
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

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

We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
For those of you who don't follow the news, or just happen to live under rocks, Microsoft Research released a beta SDK (http://www.microsoft.com/en-us/download/details.aspx?id=27876) for the Xbox 360 Kinect. If you don't know what a Kinect is (http:…
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…

610 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