如何将工具提示和ContentTemplateSelector多个绑定到两个或多个属性？这是骨架代码：
<Grid>
<Grid Definitions>
<Content Control
**Line A** *ToolTip*//Want to bind to the same two properties as in the Text Box below and invoke the converter
**Line B** *ContentTemplateSelector* //Want to bind to the same two properties as in the Text Box below and invoke the converter
/>
**Line C** <TextBlock
<TextBlock.Text>
<MultiBinding Converter="{StaticResource CountToStringConverter}">
<Binding Path="Property1"/>
<Binding Path="Property2" />
</MultiBinding>
</TextBlock.Text>
</TextBlock>
<Grid Ends>
看起来我不能使用我用于文本块的MultiBinding方式。我的ContentTemplateSelector转换器继承了DataTemplateSelector控件。任何变通方法/输入值得赞赏。另外，我无法对工具提示使用类似的多重绑定声明
答案 0 :(得分：1)
关于问题的第一部分，您可以像设置文本块一样设置height的{{1}}，如果 `.maincontent {
margin-top: 200px;
background: #E0E0E0;
float: left;
border: 1px solid #013A57;
padding: 3px 2px;
margin-top: 0px;
border-radius: 5px;
height: 750pxmain;
width: 900px;
margin-left: 15px;
height: 750px;
}
.maincontent table{
height: 20%;
overflow-y: scroll;
width: 55%;
margin-top: 30px;
margin-left: 30px
}
.maincontent tr{
background: #E0E0E0;
border-bottom: 1px solid #FFF;
margin-bottom: 5px;
}
.maincontent td{
font-family: 'Lato', sans-serif;
font-weight: bold;
padding: 10px;
text-align: left;
width: 33.3333%;
font-size: 12px;
}
.maincontent h3{
padding: 10px;
border-bottom: 2px solid #013A57;
margin: 10px;
font-size: 23px;
color: #013A57;
}`
<div class="maincontent" style="">
<h3>Register Here</h3>
<div class="row justify-content-center" style="float: left;margin-left:
2px;margin-top: 50px">
<div class="col" style="width: 200px">
<?php if(!empty($msg)) { ?>
div id="dialog" title="" style="background: #013A57; color: white;">
<?php echo $msg;?>
</div>
<?php }?>
<form method="post" action="register.php" enctype="multipart/form- data"
style="width: 860px;margin: 0px;height: 580px;">
<input class="form-control" type="" name="name" placeholder="Name..."
style="width: 400px; margin-left: 200px" ><br>
<input class="form-control" type="email" name="email"
placeholder="Email..." style="width: 400px; margin-left: 200px" ><br>
<input class="form-control" type="password" name="password"
placeholder="Password" style="width: 400px; margin-left: 200px" ><br>
<input class="form-control" type="password" name="cPassword"
placeholder="confirm Password..." style="width: 400px; margin-left: 200px"
><br>
<input class="form-control" type="text" name="contactNO" placeholder="Your
contact No.." style="width: 400px; margin-left: 200px" ><br>
<div class="radio">
<h6>Select a Category</h6>
<input type="radio" name="category" value="customer">Customer<br>
<input type="radio" name="category" value="DispensaryOwner">Dispensary
Owner<br>
<input type="radio" name="category" value="dealer">Dealer<br>
</div>
<br>
<div class="address radio" >
<h6 style="margin-left: 20px">Address</h6>
<select name="district" id="district">
<option value="">Select District</option>
<?php echo load_district(); ?>
</select>
<br>
<select name="place" id="place">
<option value="">Select place</option>
</select>
</div>
<br>
<input class="btn-primary" type="submit" name="submit" value="Register"
style=" margin-left: 200px"><br><br>
</form>
</div>
</div>
</div>为空则工具提示赢了＆＃39 ; t出现。
对于ToolTip，只需定义两个使用ContentControl和转换器的模板（确保使用ContentControl绑定属性以避免TemplateSelector方案），并将Multibinding的{{1}}绑定到使用两个定义的ElementName设置的UnserValue，以下是如何执行此操作的完整示例：
MainWindow xaml：
ContentTemplateSelectorTemplateSelector，Converter和Codebehind：
ContentControl<强>更新
正如我所说，使用DataTriggers更容易做到这一点，因此为每个图标定义DataTemplateSelector，并根据DataTemplates的值设置<Window ...
x:Name="Main"
Title="MainWindow" Height="450" Width="800" DataContext="{Binding RelativeSource={RelativeSource Self}}" >
<Window.Resources>
<local:CountToStringConverter x:Key="CountToStringConverter"/>
<DataTemplate x:Key="FirstTemplate">
<Grid>
<TextBlock>
<TextBlock.Text>
<MultiBinding Converter="{StaticResource CountToStringConverter}">
<Binding Path="DataContext.Property1" ElementName="Main"/>
<Binding Path="DataContext.Property2" ElementName="Main"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</Grid>
</DataTemplate>
<DataTemplate x:Key="SecondTemplate">
<Grid>
<TextBlock>
<TextBlock.Text>
<MultiBinding Converter="{StaticResource CountToStringConverter}">
<Binding Path="DataContext.Property2" ElementName="Main"/>
<Binding Path="DataContext.Property1" ElementName="Main"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</Grid>
</DataTemplate>
<local:MyTemplateSelector x:Key="MyTemplateSelector" FirstDataTemplate="{StaticResource FirstTemplate}" SecondDataTemplate="{StaticResource SecondTemplate}"/>
</Window.Resources>
<Grid>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ContentControl ContentTemplateSelector="{StaticResource MyTemplateSelector}">
<ContentControl.ToolTip>
<MultiBinding Converter="{StaticResource CountToStringConverter}">
<Binding Path="Property1"/>
<Binding Path="Property2" />
</MultiBinding>
</ContentControl.ToolTip>
</ContentControl>
<TextBlock Grid.Row="1">
<TextBlock.Text>
<MultiBinding Converter="{StaticResource CountToStringConverter}">
<Binding Path="Property1"/>
<Binding Path="Property2" />
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</Grid>
</Grid>
</Window>
和public class MyTemplateSelector : DataTemplateSelector
{
public DataTemplate FirstDataTemplate { get; set; }
public DataTemplate SecondDataTemplate { get; set; }
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
// select your template based on item
return (new Random()).Next(2)==0?SecondDataTemplate:FirstDataTemplate;
}
}
public class CountToStringConverter:IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (values == null)
return null;
return values[0]?.ToString() + values[1]?.ToString();
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
public partial class MainWindow : Window, INotifyPropertyChanged
{
private string _property1;
public string Property1
{
get { return _property1; }
set
{
if (value == _property1) return;
_property1 = value;
OnPropertyChanged();
}
}
private string _property2;
public string Property2
{
get { return _property2; }
set
{
if (value == _property2) return;
_property2 = value;
OnPropertyChanged();
}
}
public MainWindow()
{
InitializeComponent();
Property1 = "Property 1";
Property2 = "Property 2";
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
使用相同的多值转换器：
让我们假设您有两个DataTemplates定义如下：
DataTrigger您的DataTriggers应如下所示：
ContentTemplate现在，如果要绑定图标，可以使用property1绑定始终执行此操作：
property2您可能还会考虑的另一个选项是在<Window.Resources>
<DataTemplate x:Key="WarningIconImageTemplate">
<StackPanel>
<TextBlock Text="Some Text"></TextBlock>
<Image Source="/Icons/warningIcon.png"></Image>
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="CautionIconImageTemplate">
<StackPanel>
<TextBlock Text="Some Other Text"></TextBlock>
<Image Source="/Icons/cautionIcon.png"></Image>
</StackPanel>
</DataTemplate>
<local:CountToStringConverter x:Key="CountToStringConverter"/>
</Window.Resources>
中定义<ContentControl>
<ContentControl.Style>
<Style TargetType="ContentControl">
<Style.Triggers>
<DataTrigger >
<DataTrigger.Binding>
<MultiBinding Converter="{StaticResource CountToStringConverter}">
<Binding Path="Property1"/>
<Binding Path="Property2" />
</MultiBinding>
</DataTrigger.Binding>
<DataTrigger.Value>
<system:String>Property 1Property 2</system:String>
<!--update based on your need-->
</DataTrigger.Value>
<Setter Property="ContentTemplate" Value="{StaticResource WarningIconImageTemplate}"/>
<Setter Property="ToolTip" Value="First ToolTip"/>
</DataTrigger>
<DataTrigger >
<DataTrigger.Binding>
<MultiBinding Converter="{StaticResource CountToStringConverter}">
<Binding Path="Property1"/>
<Binding Path="Property2" />
</MultiBinding>
</DataTrigger.Binding>
<DataTrigger.Value>
<system:String>Property 2Property 1</system:String>
<!--update based on your need-->
</DataTrigger.Value>
<Setter Property="ContentTemplate" Value="{StaticResource CautionIconImageTemplate}"/>
<Setter Property="ToolTip" Value="Second ToolTip"/>
</DataTrigger>
</Style.Triggers>
</Style>
</ContentControl.Style>
</ContentControl>
。
答案 1 :(得分：0)
您可以通过以下两种方式之一编写任何属性：
或者：
<ContentControl ToolTip="Some Tooltip" />
或
<ContentControl>
<ContentControl.ToolTip>
<MultiBinding Converter="{StaticResource CountToStringConverter}">
<Binding Path="Property1"/>
<Binding Path="Property2" />
</MultiBinding>
</ContentControl.ToolTip>
</ContentControl>