README.md

ValidationEngine

A .NET Attribute based validation framework for Model and Domain classes

Available Attribute X Validations

• Required:BOOL, checks if the field is required (not empty or null).
• MaxSize:INT, checks the maximum length of the field as string.
• MinSize:INT, checks the minimum length of the field as string.
• MaxValue:INT, checks the maximum integer value allowed in the field.
• MinValue:INT, checks the minimum integer value allowed in the field.
• AllowedInputType:ENUM, checks for the data format as string.

AllowedInputType Enum

• Numeric, Only numbers.
• Alphanumeric, Letters, numbers, and symbols.
• Alphabetic, Only letters.
• Email, Email pattern.
• URL, Web URL patter.
• Any, Any character or pattern is accepted.

Requirements

The project was developed and tested using Visual Studio 2013 and .NET Framework 4.5.

Usage

public class TestModel
{
    [Validation(Required = true, MaxSize = 100, MinSize = 0, AllowedInputType = InputType.Any)]
    public string Field1 { get; set;}

    [Validation(Required = true, MaxValue = 10, MinValue = 1, AllowedInputType = InputType.Numeric)]
    public double Field2 { get; set;}

    [Validation(AllowedInputType = InputType.Email)]
    public string Field3 { get; set;}
}

// After loading the data into the Model in your Controller or ViewModel class:

static void Main(string[] args)
{
    var engine = new ValidationEngine();
    var testModelInstance = LoadTestModelWithData();

    engine.Validate(testModelInstance);

    foreach (var prop in engine.Error)
        foreach (var msg in prop.Value)
            Console.WriteLine(string.Format("{0} {1}", prop.Key.Name, msg));

    Console.ReadKey();
}