Question

After creating this object

ClassName obj = new ClassName
{
  Currency = "eur",
  DateStart = DateTime.Now.AddDays(-1),
  DateEnd = DateTime.Now.AddDays(-1)
};

and trying to validate it

var validationResults = Validation.Validate<ClassName>(obj);

I see this error, and I don’t figure out where to look and fix this:

An unhandled exception of type 'System.ArgumentException' occurred in
Microsoft.Practices.EnterpriseLibrary.Validation.dll

Additional information: Object must be of type Int32.

Any help is appreciated.

Thanks.

EDIT

Here seems to be the problem:

[RangeValidator(0f, RangeBoundaryType.Inclusive, 0f, RangeBoundaryType.Ignore, MessageTemplate = "...")]
public virtual double Price
{
    get;
    set;
}

Answer 1

You must have decorated some fields or properties of ClassName with Validator attributes. I assume that some of the attributes are either not applicable or you missed some parameters…