<Window x:Class="TestOfMultiBinding.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<StackPanel Background="LightBlue" >
<TextBox x:Name="textBox1" Height="23" Margin="5" />
<TextBox x:Name="textBox2" Height="23" Margin="5,0" />
<TextBox x:Name="textBox3" Height="23" Margin="5" />
<TextBox x:Name="textBox4" Height="23" Margin="5,0" />
<Button x:Name="button1" Content="Submit"
Width="80" Margin="5" />
</StackPanel>
</Window>
using System;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
namespace TestOfMultiBinding
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.SetMultiBinding();
}
private void SetMultiBinding()
{
Binding b1 = new Binding("Text")
{
Source = this.textBox1
};
Binding b2 = new Binding("Text")
{
Source = this.textBox2
};
Binding b3 = new Binding("Text")
{
Source = this.textBox3
};
Binding b4 = new Binding("Text")
{
Source = this.textBox4
};
MultiBinding mb = new MultiBinding()
{
Mode = BindingMode.OneWay
};
mb.Bindings.Add(b1);
mb.Bindings.Add(b2);
mb.Bindings.Add(b3);
mb.Bindings.Add(b4);
mb.Converter = new LogonMultiBindingConverter();
this.button1.SetBinding(Button.IsEnabledProperty, mb);
}
}
public class LogonMultiBindingConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (!values.Cast<string>().Any(text => string.IsNullOrEmpty(text))
&& values[0].ToString() == values[1].ToString()
&& values[2].ToString() == values[3].ToString())
{
return true;
}
return false;
}
//不会被调用
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
}