what is the best way how to set selected value in combo box?

Question

2.00/5 (1 vote)

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I'm wondering, what is better solution and why?
I suppose that the second one, as exception should be in the code just to handle errors and this is not an error (just the value is not in combo box)? Am I right? And is it the only reason? Or there's nothing wrong about both solutions?
Or is there another solution? Better than these two?

C#

try
{
   cbOwner.SelectedValue = whatever.toString();
}
catch (Exception ex)
{
   //nothing happened, program can continue
}

or

SQL

if (cbOwner.Items.FindByValue(whatever.toString()) != null)
   cbOwner.SelectedValue = whatever.toString();

Posted 7-Feb-13 2:59am

Petra Cerna

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-02-07T03:05:00

What you show is a really bad way, because you may easily make a mistake with a string. Therefore, it's much better to set selected index (exact answer depends on exact type of ComboBox; there are different types under this name).

But really robust and reliable approach is to put items of some semantic data type in the list. I explain it in my past answers collected here:
combobox.selectedvalue shows {} in winform[^].

—SA

shiny13 · Answer 2 · 2013-02-07T03:15:00

Solution 2

There was a similar problem discussed and many people provided solutions in the asp.net forum: C# How To Assign Combo Box Values / Text[^]

Posted 7-Feb-13 3:15am

shiny13

Updated 7-Feb-13 3:33am

v2

Comments

Petra Cerna 7-Feb-13 9:59am

I'm not trying to assign a value, what I'm trying to do is - if whatever.toString() exist in combo box, than select it, else just continue

shiny13 7-Feb-13 10:07am

Well you can do all that then in an if statement. I understand our logic but I wonder why would you need to do this.