I am creating a calculator form, and need to ensure the user enters a numeric only value (no empty values are valid). The user must enter a numeric value only, and if not a message box should appear. Also is it possible to validate both txtboxes at one, or do I need to enter the same code in both textboxes... Wow, man, consider the poor user who just has typed a long accesscode with one typo in it. I don't know much about the error providor, nor the Validating / Validated events. Would this be placed in in some sort of validating procedure?So I've chosen to write just one method (will be a static method of a 'validator' class) that can handle validation for both and am unsure if this is a good idea - having a method that essentially does I've run some tests to check the edge cases and passing in empty strings etc and it passed them, but for some reason this feels kind of wrong.Should I separate string and integer validation into separate methods?
I have created a form-based program that needs some input validation.
// From PHP documentation for is_numeric // ( // Finds whether the given variable is numeric. Examples: Pull in a reference to Visual Basic in your project and use its Information.
// Numeric strings consist of optional sign, any number of digits, optional decimal part and optional // exponential part. Is Numeric method such as shown below and be able to capture floats as well as integers unlike the answer above which only catches ints. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
It can contain only unformatted text in its Text property.
In many situations you need to enter only numeric values in the Textbox.