Question

Motive : I have a decimal property in a class which I wish to validate so that it adheres to regex “^\d{1,7}.\d{2,7}$”

So i have applied the Regex validator attribute to the property

   [RegexValidator(@"^\d{1,7}\.\d{2,7}$"...)]
   public Decimal MyDecimalProperty { get; set; }

Then, via propertyproxyvalidator on my asp.net page i have tied a textbox validation to this property type.

<cc1:PropertyProxyValidator ID="MyValidator" runat="server" ControlToValidate="MyTextBox"
PropertyName="MyDecimalProperty" SourceTypeName="Myclass, Mydll"></cc1:PropertyProxyValidator>

At runtime i get this error when validation gets performed:

“Value to validate is not of the
expected type: expected System.String
but got System.Decimal instead.”

Any idea how to get around this issue, or an alternate to achieve my motive ?

Answer 1

Regular expressions are built to work on strings, not numeric types. Perhaps you need something like this instead:

public Decimal MyDecimalProperty { get; set; }

[RegexValidator(@"^\d{1,7}\.\d{2,7}$")]
public string MyDecimalPropertyString
{
    get
    {
        return this.MyDecimalProperty.ToString();
    }
}

Also, update the PropertyName attribute of the PropertyProxyValidator.