效果如下：
左边3个文本框信息，下面的文本框绑定上2个文本框信息
<StackPanel HorizontalAlignment="Left"
Height="230"
Margin="10 10 0 0"
VerticalAlignment="Top" Width="366">
<TextBox x:Name="txtFname" Text="FName"/>
<TextBox x:Name="txtLname" Text="LName"/>
<TextBox>
<TextBox.Text>
<MultiBinding Converter="{StaticResource FLName2FullName}">
<Binding ElementName="txtFname" Path="Text"/>
<Binding ElementName="txtLname" Path="Text"/>
</MultiBinding>
</TextBox.Text>
</TextBox>
</StackPanel>
实现多绑定转换类：
using System.Windows.Data;
public class FirstNameLastNameToFullNameConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (values != null)
{
return values[0].ToString() + " " + values[1].ToString();
}
else
{
return null;
}
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
string[] values = null;
if (value != null && value.ToString() != "")
{
return values = value.ToString().Split(' ');
}
else
{
return null;
}
}
}
右边部分是CheckBox的多绑定
<StackPanel HorizontalAlignment="Left"
Height="232"
Margin="408 8 0 0"
VerticalAlignment="Top" Width="382">
<TextBlock TextWrapping="Wrap" Text="Which statements are True? select all that apply"/>
<CheckBox x:Name="chk1" Content="target binds to multiple source"/>
<CheckBox x:Name="chk2" Content="binding can not done inline"/>
<CheckBox x:Name="chk3" Content="requires multbinding"/>
<TextBlock>
<TextBlock.Text>
<MultiBinding Converter="{StaticResource bools2String}">
<Binding ElementName="chk1" Path="IsChecked"/>
<Binding ElementName="chk2" Path="IsChecked"/>
<Binding ElementName="chk3" Path="IsChecked"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</StackPanel>
转换类：
using System.Windows.Data;
public class BoolsToStringConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
string answer = " You answer is : ";
if ((bool)values[0] == true && (bool)values[1] == true && (bool)values[2] == true)
{
return answer + "CORRECT";
}
else if ((bool)values[0] == false && (bool)values[1] == false && (bool)values[2] == false)
{
return answer;
}
else
{
return answer + "INCORRECT";
}
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
资源设置：
<Window.Resources>
<Style TargetType="StackPanel">
<Setter Property="Background" Value="Beige"/>
</Style>
<Style TargetType="CheckBox">
<Setter Property="Margin" Value="5"/>
<Setter Property="FontSize" Value="20"/>
<Setter Property="FontWeight" Value="Bold"/>
</Style>
<Style TargetType="TextBlock">
<Setter Property="Margin" Value="3"/>
<Setter Property="FontSize" Value="20"/>
</Style>
<Style TargetType="TextBox">
<Setter Property="Margin" Value="3"/>
<Setter Property="FontSize" Value=" 16"/>
</Style>
<local:FirstNameLastNameToFullNameConverter x:Key="FLName2FullName"></local:FirstNameLastNameToFullNameConverter>
<local:BoolsToStringConverter x:Key="bools2String"/>
</Window.Resources>
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