C sharp validating
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.
So before saving data, I want to validate whether all the required fields are filled (Text Boxes) by the user. I would rather use a generic function that would be passed each control on the form and based on the type of the control, separate validation logic would be written.The main advantage is that it prevents a page from being postback to the server until the client validation is executed successfully. Server validation will only performed when Cause Validation is set to true. You can have a Required Field Validator control for each form element on which you wish to enforce Mandatory Field rule.For developer point of view serve side is preferable because it will not fail, it is not dependent on browser and scripting language. NET validation, which will ensure client, and server validation. When the value of the Causes Validation property is set to true, you can also use the Validation Group property to specify the name of the validation group for which the Button control causes validation. Compare Validator Control The Compare Validator control allows you to make comparison to compare data entered in an input control with a constant value or a value in a different control.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.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.
in case extra validation like restricting validation to some of the controls only, that would be decided at the function calling level.
In my windows form projects , i have validated the fields using Boolean method.
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.
That means the user cannot close the form unless the field passes validation.
Changing this to a method won't make the design any better.