Gu.Wpf.Validation

A set of attached properties for TextBox.

Sample:

<TextBox validation:Input.Value="{Binding DoubleValue}"
         validation:Input.NumberStyles="AllowDecimalPoint,AllowLeadingSign,AllowLeadingWhite"
         validation:Input.Min="-10"
         validation:Input.Max="10"
         validation:Input.DecimalDigits="2"
         validation:Input.ValidationTrigger="PropertyChanged" />

<TextBox validation:Input.Value="{Binding StringValue}"
         validation:Input.Pattern="a\d+"
         validation:Input.IsRequired="True"
         validation:Input.ValidationTrigger="PropertyChanged" />

For more samples see demo project.

• Creates a binding Text > validation:Input.Value internally. The binding has validationrules so it uses standard WPF validation. It picks up the type from the binding and selects default parsing/validation/formatting based on that.
• No custom controls.
• Higly configurable.
  • IValidator, plug in a validator of your own.
  • ITypeNumberStyles, plug in default numberstyles of choice.
  • ITypeRules, plug in default validationrules of choice.
  • ITypeStringConverters, plug in custom handling of to/from string.
  • All ^ can of course be bound per instance.
• Validates as you type or on lost focus.