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C sharp validating

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This example extends previous article how to show an Input Box in C# using simple static method. This code shows the Input Box class implementation.

In this example I use simple class named Input Box with static method Show (to be similar to Message Box. It has overloaded static method Show which takes following paramaters: a dialog title, a prompt text, a default value and optionally a validation delegate.

Doing console iteractions in a property setter is NOT something that is commonly done in C#.

Not only is it not idiomatic, its just not a good idea period.

It work on both end; first it will work on client validation and than on server validation. It can most commonly be used when you need to confirm password entered by the user at the registration time. Range Validator Control The Range Validator Server Control is another validator control, which checks to see if a control value is within a valid range.

At any cost server validation will work always whether client validation is executed or not. The attributes that are necessary to this control are: Maximum Value, Minimum Value, and Type.

I am using the following objects: A Tex Box to enter the value A Validating event linked to the Text Box to validate the data.

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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.

Although if the users takes focus of the field, the "bad" data (such as "fdgfdg") is still left in the field.

So could some demonstrate how when focus is lost on the field, if the data is not valid, a default value will be entered instead e.g.

Note also that the user can leave a field if it doesn’t have a This entry was posted in controls and tagged C#, C# programming, controls, example, example program, validate field, validate form, Validating event, Windows Forms programming.

I have been writing a check in a name property of my person abstract class.