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how to implement FluentValidation in wpf
“how to implement FluentValidation in wpf” Code Answer’s
how to implement FluentValidation in wpf
csharp by
Cute Crane
on Jul 15 2020
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1
using System; using System.ComponentModel; using System.Linq; using WpfFluentValidationExample.Lib; namespace WpfFluentValidationExample.ViewModels { public class UserViewModel : INotifyPropertyChanged, IDataErrorInfo { private readonly UserValidator _userValidator; private string _zip; private string _email; private string _name; public UserViewModel() { _userValidator = new UserValidator(); } public string Name { get { return _name; } set { _name = value; OnPropertyChanged("Name"); } } public string Email { get { return _email; } set { _email = value; OnPropertyChanged("Email"); } } public string Zip { get { return _zip; } set { _zip = value; OnPropertyChanged("Zip"); } } public string this[string columnName] { get { var firstOrDefault = _userValidator.Validate(this).Errors.FirstOrDefault(lol => lol.PropertyName == columnName); if (firstOrDefault != null) return _userValidator != null ? firstOrDefault.ErrorMessage : ""; return ""; } } public string Error { get { if (_userValidator != null) { var results = _userValidator.Validate(this); if (results != null && results.Errors.Any()) { var errors = string.Join(Environment.NewLine, results.Errors.Select(x => x.ErrorMessage).ToArray()); return errors; } } return string.Empty; } } public event PropertyChangedEventHandler PropertyChanged; protected virtual void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName)); } } }
Source:
gist.github.com
how to implement FluentValidation in wpf
csharp by
Cute Crane
on Jul 15 2020
Donate
1
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:viewModels="clr-namespace:WpfFluentValidationExample.ViewModels" x:Class="WpfFluentValidationExample.Views.UserView" Title="UserView" Height="300" MinWidth="500"> <Window.DataContext> <viewModels:UserViewModel/> </Window.DataContext> <StackPanel> <StackPanel Orientation="Horizontal"> <Label Content="Name" Margin="10"/> <TextBox Text="{Binding Name, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Width="200" Margin="10"> <Validation.ErrorTemplate> <ControlTemplate> <StackPanel Orientation="Horizontal"> <!-- Placeholder for the TextBox itself --> <AdornedElementPlaceholder x:Name="textBox"/> <TextBlock Margin="10" Text="{Binding [0].ErrorContent}" Foreground="Red"/> </StackPanel> </ControlTemplate> </Validation.ErrorTemplate> </TextBox> </StackPanel> <StackPanel Orientation="Horizontal"> <Label Content="E-Mail" Margin="10"/> <TextBox Text="{Binding Email, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Width="200" Margin="10"> <Validation.ErrorTemplate> <ControlTemplate> <StackPanel Orientation="Horizontal"> <!-- Placeholder for the TextBox itself --> <AdornedElementPlaceholder x:Name="textBox"/> <TextBlock Margin="10" Text="{Binding [0].ErrorContent}" Foreground="Red"/> </StackPanel> </ControlTemplate> </Validation.ErrorTemplate> </TextBox> </StackPanel> <StackPanel Orientation="Horizontal"> <Label Content="Zip" Margin="10"/> <TextBox Text="{Binding Zip, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Width="200" Margin="10"> <Validation.ErrorTemplate> <ControlTemplate> <StackPanel Orientation="Horizontal"> <!-- Placeholder for the TextBox itself --> <AdornedElementPlaceholder x:Name="textBox"/> <TextBlock Margin="10" Text="{Binding [0].ErrorContent}" Foreground="Red"/> </StackPanel> </ControlTemplate> </Validation.ErrorTemplate> </TextBox> </StackPanel> <Button Margin="10">Submit</Button> </StackPanel> </Window>
Source:
gist.github.com
how to implement FluentValidation in wpf
csharp by
Cute Crane
on Jul 15 2020
Donate
0
using System.Text.RegularExpressions; using FluentValidation; using WpfFluentValidationExample.ViewModels; namespace WpfFluentValidationExample.Lib { public class UserValidator : AbstractValidator<UserViewModel> { public UserValidator() { RuleFor(user => user.Name) .NotEmpty() .WithMessage("Please Specify a Name."); RuleFor(user => user.Email) .EmailAddress() .WithMessage("Please Specify a Valid E-Mail Address"); RuleFor(user => user.Zip) .Must(BeAValidZip) .WithMessage("Please Enter a Valid Zip Code"); } private static bool BeAValidZip(string zip) { if (!string.IsNullOrEmpty(zip)) { var regex = new Regex(@"\d{5}"); return regex.IsMatch(zip); } return false; } } }
Source:
gist.github.com
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