WebForms UI validation

juhilt — Wed, 19 May 2010 12:39:16 GMT

Hello!

I am new to the CSLA .NET and I am wondering how the CSLA business entities can be used with Web Forms UI. I am going to use CSLA 3.8 with .NET 3.5 Framework.

How can I for example use validation rules from the business entity to validate multiple textboxes?

How does the validation logic for example handle type casting from string to int and give a reasonable error messages to user when using data binding? Does type casting error stop validation, does it continue or does it crash the whole application? Can I call the validation to test if the user input can be type casted?

How can I for example change the color of a specific textbox to red when validation or type casting of the data fails? Is there some way to map the UI element to the business entity property or do I need to create a mapper by my self? If latter, how should I do it?

A very simple example

Web form

First name: [textbox]

Last name: [textbox]

Age: [textbox]

Organisation id: [textbox]

Business entity

string FirstName {get; set;}

string LastName {get; set;}

int Age {get; set;}

int OrganisationId {get; set;}

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WebForms UI validation