C# 如何将StackPane的可见性绑定到属性?
我有几个堆栈窗格,我只想显示一个组合框的特定值。我已经让属性按我所希望的方式进行更改,但由于某些原因,当ComboBox值更新时,StackPane的可见性不会更新。不知道我做错了什么 RegisteredServersView.xamlC# 如何将StackPane的可见性绑定到属性?,c#,wpf,mvvm,data-binding,visibility,C#,Wpf,Mvvm,Data Binding,Visibility,我有几个堆栈窗格,我只想显示一个组合框的特定值。我已经让属性按我所希望的方式进行更改,但由于某些原因,当ComboBox值更新时,StackPane的可见性不会更新。不知道我做错了什么 RegisteredServersView.xaml <UserControl x:Class="WpfApp1.Servers.RegisteredServersView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presen
<UserControl x:Class="WpfApp1.Servers.RegisteredServersView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:b="http://schemas.microsoft.com/xaml/behaviors"
xmlns:local="clr-namespace:WpfApp1.Servers"
mc:Ignorable="d"
Height="250" Width="600">
<UserControl.DataContext>
<local:RegisteredServersViewModel/>
</UserControl.DataContext>
<StackPanel>
<StackPanel Orientation="Horizontal">
<Label Content="Server Instance:" Margin="30,10,10,10"/>
<TextBox Text="{Binding ServerName, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}"
Width="140" Margin="10">
<Validation.ErrorTemplate>
<ControlTemplate>
<StackPanel Orientation="Horizontal">
<AdornedElementPlaceholder x:Name="textBox"/>
<TextBlock Margin="10" Text="{Binding [0].ErrorContent}" Foreground="Red"/>
</StackPanel>
</ControlTemplate>
</Validation.ErrorTemplate>
</TextBox>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Label Content="Authorization Type:" Margin="10"/>
<ComboBox Name="cbAuthType"
Margin="10"
ItemsSource="{Binding Types}"
SelectedItem="{Binding AuthType, UpdateSourceTrigger=PropertyChanged}"
Width="141"/>
</StackPanel>
<StackPanel Orientation="Horizontal"
Visibility="{Binding Vis}">
<Label Content="Login:" Margin="80,10,10,10"/>
<TextBox Text="{Binding Login, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}"
Width="140" Margin="10">
<Validation.ErrorTemplate>
<ControlTemplate>
<StackPanel Orientation="Horizontal">
<AdornedElementPlaceholder x:Name="textBox"/>
<TextBlock Margin="10" Text="{Binding [0].ErrorContent}" Foreground="Red"/>
</StackPanel>
</ControlTemplate>
</Validation.ErrorTemplate>
</TextBox>
</StackPanel>
<StackPanel Orientation="Horizontal"
Visibility="{Binding Vis}">
<Label Content="Password:" Margin="60,10,10,10"/>
<TextBox Text="{Binding Password, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}"
Width="140" Margin="10">
<Validation.ErrorTemplate>
<ControlTemplate>
<StackPanel Orientation="Horizontal">
<AdornedElementPlaceholder x:Name="textBox"/>
<TextBlock Margin="10" Text="{Binding [0].ErrorContent}" Foreground="Red"/>
</StackPanel>
</ControlTemplate>
</Validation.ErrorTemplate>
</TextBox>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Button x:Name="Reg"
Content="Register"
Click="OnSave"
Margin="145,10,10,10"
Width="60"
IsEnabled="{Binding ButtonEnabled, ValidatesOnDataErrors=True}"/>
<Button x:Name="Cancel"
Content="Cancel"
Click="OnCancel"
Margin="5,10,10,10"
Width="60"/>
</StackPanel>
</StackPanel>
</UserControl>
RegisteredServersViewModel.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows.Input;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WpfApp1.Data;
using WpfApp1.Repos;
using System.Windows;
namespace WpfApp1.Servers
{
public class RegisteredServersViewModel : INotifyPropertyChanged, IDataErrorInfo
{
private readonly RegisteredServerValidator _validator;
private string _serverName;
private string _authType;
private string _login;
private string _password;
private Visibility _vis;
public IEnumerable<string> _types;
public RegisteredServersViewModel()
{
_types = new List<string>() { "SQLAuth", "Integrated" };
_validator = new RegisteredServerValidator();
}
public IEnumerable<string> Types
{
get { return _types; }
}
public string ServerName
{
get { return _serverName; }
set
{
_serverName = value;
CheckButtonEnabled();
OnPropertyChanged("ServerName");
}
}
public string AuthType
{
get { return _authType; }
set
{
_authType = value;
if(value.Equals("SQLAuth"))
{
Vis = Visibility.Visible;
}
else
{
Vis = Visibility.Hidden;
}
CheckButtonEnabled();
OnPropertyChanged("AuthType");
}
}
public Visibility Vis
{
get { return _vis; }
private set
{
_vis = value;
Console.WriteLine(_vis);
OnPropertyChanged("Vis");
}
}
public string Login
{
get { return _login; }
set
{
_login = value;
CheckButtonEnabled();
OnPropertyChanged("Login");
}
}
public string Password
{
get { return _password; }
set
{
_password = value;
CheckButtonEnabled();
OnPropertyChanged("Password");
}
}
public string this[string columnName]
{
get
{
var firstOrDefault = _validator.Validate(this).Errors.FirstOrDefault(lol => lol.PropertyName == columnName);
if(firstOrDefault != null)
{
return _validator != null ? firstOrDefault.ErrorMessage : "";
}
return "";
}
}
public string Error
{
get
{
if(_validator != null)
{
var results = _validator.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;
}
}
private bool _buttonEnabled;
public bool ButtonEnabled
{
get { return _buttonEnabled; }
set
{
_buttonEnabled = value;
//Console.WriteLine(_buttonEnabled);
OnPropertyChanged("ButtonEnabled");
}
}
public void CheckButtonEnabled()
{
if(ServerName != null && AuthType.Equals("SQLAuth") && Login != null && Password != null)
{
ButtonEnabled = true;
}
else if(ServerName != null && !AuthType.Equals("SQLAuth"))
{
ButtonEnabled = true;
}
else
{
ButtonEnabled = false;
}
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
}
}
使用系统;
使用System.Collections.Generic;
使用系统组件模型;
使用System.Windows.Input;
使用System.Linq;
使用系统文本;
使用System.Threading.Tasks;
使用WpfApp1.Data;
使用WpfApp1.Repos;
使用System.Windows;
命名空间WpfApp1.Servers
{
公共类RegisteredServerSiewModel:INotifyPropertyChanged,IDataErrorInfo
{
私有只读注册服务器验证程序_验证程序;
私有字符串_serverName;
私有字符串_authType;
私有字符串\u登录;
私有字符串\u密码;
私人能见度;
公共IEnumerable类型;
公共注册服务器IEWModel()
{
_types=newlist(){“SQLAuth”,“Integrated”};
_validator=新的RegisteredServerValidator();
}
公共IEnumerable类型
{
获取{return\u types;}
}
公共字符串服务器名
{
获取{return\u serverName;}
设置
{
_serverName=value;
CheckButtonEnabled();
OnPropertyChanged(“服务器名”);
}
}
公共字符串身份验证类型
{
获取{return\u authType;}
设置
{
_authType=值;
if(value.Equals(“SQLAuth”))
{
Vis=可见度。可见;
}
其他的
{
Vis=可见性。隐藏;
}
CheckButtonEnabled();
OnPropertyChanged(“AuthType”);
}
}
公众能见度
{
获取{return\u vis;}
专用设备
{
_vis=价值;
控制台写入线(_-vis);
不动产变更(“Vis”);
}
}
公共字符串登录
{
获取{return\u login;}
设置
{
_登录=值;
CheckButtonEnabled();
OnPropertyChanged(“登录”);
}
}
公共字符串密码
{
获取{return\u password;}
设置
{
_密码=值;
CheckButtonEnabled();
OnPropertyChanged(“密码”);
}
}
公共字符串此[string columnName]
{
得到
{
var firstOrDefault=\u validator.Validate(this).Errors.firstOrDefault(lol=>lol.PropertyName==columnName);
if(firstOrDefault!=null)
{
返回_validator!=null?firstOrDefault.ErrorMessage:;
}
返回“”;
}
}
公共字符串错误
{
得到
{
if(_validator!=null)
{
var results=\u validator.Validate(此);
if(results!=null&&results.Errors.Any())
{
var errors=string.Join(Environment.NewLine,results.errors.Select(x=>x.ErrorMessage.ToArray());
返回错误;
}
}
返回字符串。空;
}
}
已启用私有布尔(U)按钮;
公共布尔按钮已启用
{
获取{return\u buttonEnabled;}
设置
{
_按钮启用=值;
//控制台写入线(_按钮已启用);
关于财产变更(“按钮启用”);
}
}
public void CheckButtonEnabled()
{
if(ServerName!=null&&AuthType.Equals(“SQLAuth”)&&Login!=null&&Password!=null)
{
ButtonneEnabled=真;
}
else if(ServerName!=null&&!AuthType.Equals(“SQLAuth”))
{
ButtonneEnabled=真;
}
其他的
{
ButtonneEnabled=错误;
}
}
公共事件属性更改事件处理程序属性更改;
受保护的虚拟void OnPropertyChanged(字符串propertyName)
{
PropertyChangedEventHandler处理程序=PropertyChanged;
if(handler!=null)handler(这是新的PropertyChangedEventArgs(propertyName));
}
}
}
RegisteredServerValidator.cs
using FluentValidation;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WpfApp1.Data;
using WpfApp1.Servers;
namespace WpfApp1
{
class RegisteredServerValidator : AbstractValidator<RegisteredServersViewModel>
{
public RegisteredServerValidator()
{
RuleFor(instance => instance.ServerName)
.NotEmpty()
.WithMessage("This field cannot be left blank.");
RuleFor(instance => instance.Login)
.NotEmpty()
.WithMessage("This field cannot be left blank.");
RuleFor(instance => instance.Password)
.NotEmpty()
.WithMessage("This field cannot be left blank");
}
}
}
使用FluentValidation;
使用制度;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
使用System.Threading.Tasks;
使用WpfApp1.Data;
使用WpfApp1.Servers;
命名空间WpfApp1
{
类RegisteredServerValidator:AbstractValidator
{
公共注册服务器验证程序()
{
RuleFor(实例=>instance.ServerName)
.NotEmpty()
.WithMessage(“此字段不能为空”);
RuleFor(实例=>instance.Login)
.NotEmpty()
.WithMessage(“此字段不能为空”);
RuleFor(实例=>instance.Password)
.NotEmpty()
.WithMessage(“此字段不能为空”);
}
}
}
INotifyPropertyChanged.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
namespace WpfApp1
{
public class INotifyPropertyChanged : System.ComponentModel.INotifyPropertyChanged
{
protected virtual void SetProperty<T>(ref T member, T val,
[CallerMemberName]string propertyName = null)
{
if (object.Equals(member, val)) return;
member = val;
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
public event PropertyChangedEventHandler PropertyChanged = delegate { };
}
}
使用系统;
使用System.Collections.Generic;
使用系统组件模型;
使用System.Linq;
使用System.Runtime.CompilerServices;
使用系统文本;
使用System.Threading.Tasks;
命名空间WpfApp1
{
已更改的公共类INotifyPropertyChanged:System.ComponentModel.INotifyPropertyChange
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
namespace WpfApp1
{
public class INotifyPropertyChanged : System.ComponentModel.INotifyPropertyChanged
{
protected virtual void SetProperty<T>(ref T member, T val,
[CallerMemberName]string propertyName = null)
{
if (object.Equals(member, val)) return;
member = val;
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
public event PropertyChangedEventHandler PropertyChanged = delegate { };
}
}
<Window x:Class="WpfApp1.Servers.RegisteredServersWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:WpfApp1.Servers"
mc:Ignorable="d"
Height="300" Width="500"
Title="Registered Servers">
<!--This contains the UserControl with the form.-->
<Grid>
<local:RegisteredServersView HorizontalAlignment="Left"
Margin="0, 0, 0, 0"
VerticalAlignment="Top"/>
</Grid>
</Window>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace WpfApp1.Servers
{
/// <summary>
/// Interaction logic for RegisteredServersWindow.xaml
/// </summary>
public partial class RegisteredServersWindow : Window
{
public RegisteredServersWindow()
{
InitializeComponent();
}
}
}