How do I check for multiple text boxes are empty.

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Title say's it all. I've been doing it like this,

C#

if (string.IsNullOrWhiteSpace(textEdit1.Text))
                   {
                       XtraMessageBox.Show("Textbox can't be empty ", "Error"); return;

                   }

But I'm trying to clean up my coding and some options has 10 text boxes, so it looks really sloppy with that pasted 10 times haha.

What I have tried:

C#

if (string.IsNullOrWhiteSpace(textEdit1.Text))
                   {
                       XtraMessageBox.Show("Textbox can't be empty ", "Error"); return;

                   }

Posted 12-Dec-17 18:02pm

Member 13199106

Updated 12-Dec-17 20:07pm

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Bryian Tan 13-Dec-17 0:27am

check this out: c# - Loop through Textboxes - Stack Overflow[^]

________________ 13-Dec-17 2:18am

All simple - if you need same behavior from controls - best way is to create UserControl.
In code of UserControl - you once add all needed validations, than simple drag and drop this new element to your form from designer.
It is ability to add custom properties - so you could change the validation principal also from designer.

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OriginalGriff · Answer 1 · 2017-12-12T20:03:00

I'd leave it as it is: maybe move the tests into a method that returns false if any box was empty but I'd leave it as separate tests - if only so that you can give an explicit reason and put the focus to the "faulty" input:

C#

if (string.IsNullOrWhitespace(tbAddress.text))
   {
   XtraMessageBox.Show("An address is required", "Error");
   tbAddress.Focus();
   return false;
   }
if (string.IsNullOrWhitespace(tbMobile.text))
   {
   XtraMessageBox.Show("An mobile number is required", "Error");
   tbMobile.Focus();
   return false;
   }
...

It looks clumsy as code, but it's a lot more friendly for the user.