C textbox1 validating
You are going to need to learn to learn this pattern if you want to write maintainable gui programs anyway.
@mohit2k8 You have many options, IMO, worst is to create a helper method that does this on a list of text components, much better is to learn the decorator pattern: You decorate the text boxes with ability to validate their text.
In that case you should also somehow tell the user that there’s a problem with the field. For example, if the user presses Tab, clicks on another control, presses Enter to trigger the Accept button, or presses Esc to trigger the Cancel button.
For example, you could display an error message, change the field’s background color, or at least beep to let the user know that focus did not leave the field because something is wrong. The event triggers even if the user tries to close the form.
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Visit Stack Exchange In a Win Form I'm doing initial validation in the Form. To make the code short only three fields are shown in the code.
however as I said, this is really the quickest and easiest way (code wise) to do it.
Navíc se komponenta Calendar pro zadávání data nehodí vždy – jednak si nějak rozumně neporadí s možností, kdy datum není zadáno (tedy s hodnotou null), a navíc kdyby po mě někdo chtěl, abych mu datum narození své babičky klikal v kalendáři a musel tisíckrát přepnout na předchozí měsíc, tak bych ho asi poslal velmi nevybíravými výrazy do Abu Dhábí.
In my windows form projects , i have validated the fields using Boolean method.
Find the below sample screen shot for validating the fields before saving the data Img 3: Validation method Here I have validated the fields using the Boolean method, If all the field values are entered properly it will return true, other wise it will return false and will display an error message.
if-else condition is only good for fewer textboxs in a winform or solution, if(Textbox1.text==null) else but if there are lots of textbox?
if there are six textforms in a winform I think it's not a good way to write if((Textbox1.text=="")&&(Textbox1.text==null)) .