Introduction
This article provides a basic understanding of the Rules Engine for beginners .
The Rules Engine is a . NET C# project that validates business logic by defining a multiple rules for your data classes. Rules are defined using a fluent-interface (fluent validation) helper class, and not by decorating your existing objects with attributes, therefore de-coupling validation logic from data (or domain) classes.
Background
It makes it easier for developers to define business rules on domain objects without coupling the domain object to the business rule. The Rule Engine supports cross-field validation, conditional validation and the rules are also Inheritable and Extensible .
Using the code
Here you can watch the sample rule created, which is an Operator Test. We can create our own rules related to our scenario.
public class ProductBooks
{
public ProductBooks(decimal Price)
{
this._Price = Price;
}
private decimal _Price;
public decimal Price
{
get { return _Price; }
set { _Price = value; }
}
public static bool IsValueNull(decimal value, string errormsg)
{
bool isvalid;
if (value == null)
{
isvalid = false;
}
else
{
isvalid = true;
errormsg = "erro";
}
return isvalid;
}
}
Creation Of Rules
-
Open Visual Studio 2012 or earlier. Create a Sample Project.
-
Add a Folder named Rules, then add all your class files, where you can download the associated files.
Figure 1
Testing of Rules
-
Right-click on Solution Explorer add New Unit Test Project where you can write all the test cases as shown in Figure 1
-
Add a reference of Sample.Rules in test project
-
Set the test project as the start up project
Here you can see the sample test methods:
[TestClass()]
public class ProductBooksTest
Ramasagar PulidindiPosted Dec 5, 2012, 12:34 PM
Yes Its True @ mahesh Chand
Mahesh ChandeditedPosted Dec 5, 2012, 11:02 AMEdited Dec 5, 2012, 11:02 AM
Welcome to C# Corner Rama. I think this should move to Workflow section?