WPF datagrid.rowstyle 绑定
WPF datagrid.rowstyle binding
我遇到了一个已知错误
System.Windows.Data 错误:2:找不到目标元素的管理 FrameworkElement 或 FrameworkContentElement。BindingExpression:Path=Percent;数据项=空;目标元素是 'GradientStop' (HashCode=81530);目标 属性 是 'Offset'(类型 'Double')
关于这部分代码:
<DataGrid.RowStyle>
<Style TargetType="DataGridRow">
<Style.Triggers>
<DataTrigger Binding="{Binding State}" Value="Started">
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush EndPoint="1,0" StartPoint="0,0">
<GradientStop Color="Green" Offset="0" />
<GradientStop Color="#FF2D2D30" Offset="{Binding Percent}" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
</DataTrigger>
<Trigger Property="Validation.HasError" Value="true">
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="BorderBrush" Value="Red"/>
</Trigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
我已经尝试将 DataContext
设置为代理,但没有成功:
<DataGrid.Resources>
<app:BindingProxy x:Key="proxy" Data="{Binding}" />
</DataGrid.Resources>
[...]
<GradientStop Color="#FF2D2D30" Offset="{Binding Data.Percent, Source={StaticResource proxyRow}}" />
System.Windows.Data 错误:40:BindingExpression 路径错误:'Percent' 属性 在 'object' ''ViewModel' (HashCode=37637549)' 上找不到。 BindingExpression:Path=Data.Percent; DataItem='BindingProxy' (哈希码=3342738);目标元素是 'GradientStop' (HashCode=64874797);目标 属性 是 'Offset'(类型 'Double')
这很明显,因为数据现在包含控件的 DataContext,即我的 ViewModel。
有什么建议吗?谢谢!
正如其他帖子所建议的,我认为它不适用于我的问题,但使用转换器非常适合!以下是一些参考资料:
Binding GradientStop works but reports error
How to bind GradientStop Colours or GradientStops Property in Silverlight?
public object Convert(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
Model.ListParameters parameters = (Model.ListParameters)value;
if(parameters !=null)
{
var start = new GradientStop();
start.Color = Colors.Green;
start.Offset = 0;
var stop = new GradientStop();
stop.Color = (Color)ColorConverter.ConvertFromString("#FF2D2D30");
stop.Offset = parameters .Percent;
var result = new LinearGradientBrush();
result.StartPoint = new Point(0, 0);
result.EndPoint = new Point(1, 0);
result.GradientStops.Add(start);
result.GradientStops.Add(stop);
return result;
}
return null;
}
和 XAML
<UserControl.Resources>
<app:GradientProgressConverter x:Key="GradientProgressConverter" />
</UserControl.Resources>
<DataGrid>
<DataGrid.RowStyle>
<Style TargetType="DataGridRow">
<Style.Triggers>
<DataTrigger Binding="{Binding State}" Value="Started">
<Setter Property="Background" Value="{Binding Converter={StaticResource GradientProgressConverter}}" />
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
</<DataGrid>
我遇到了一个已知错误
System.Windows.Data 错误:2:找不到目标元素的管理 FrameworkElement 或 FrameworkContentElement。BindingExpression:Path=Percent;数据项=空;目标元素是 'GradientStop' (HashCode=81530);目标 属性 是 'Offset'(类型 'Double')
关于这部分代码:
<DataGrid.RowStyle>
<Style TargetType="DataGridRow">
<Style.Triggers>
<DataTrigger Binding="{Binding State}" Value="Started">
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush EndPoint="1,0" StartPoint="0,0">
<GradientStop Color="Green" Offset="0" />
<GradientStop Color="#FF2D2D30" Offset="{Binding Percent}" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
</DataTrigger>
<Trigger Property="Validation.HasError" Value="true">
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="BorderBrush" Value="Red"/>
</Trigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
我已经尝试将 DataContext
设置为代理,但没有成功:
<DataGrid.Resources>
<app:BindingProxy x:Key="proxy" Data="{Binding}" />
</DataGrid.Resources>
[...]
<GradientStop Color="#FF2D2D30" Offset="{Binding Data.Percent, Source={StaticResource proxyRow}}" />
System.Windows.Data 错误:40:BindingExpression 路径错误:'Percent' 属性 在 'object' ''ViewModel' (HashCode=37637549)' 上找不到。 BindingExpression:Path=Data.Percent; DataItem='BindingProxy' (哈希码=3342738);目标元素是 'GradientStop' (HashCode=64874797);目标 属性 是 'Offset'(类型 'Double')
这很明显,因为数据现在包含控件的 DataContext,即我的 ViewModel。
有什么建议吗?谢谢!
正如其他帖子所建议的,我认为它不适用于我的问题,但使用转换器非常适合!以下是一些参考资料:
Binding GradientStop works but reports error
How to bind GradientStop Colours or GradientStops Property in Silverlight?
public object Convert(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
Model.ListParameters parameters = (Model.ListParameters)value;
if(parameters !=null)
{
var start = new GradientStop();
start.Color = Colors.Green;
start.Offset = 0;
var stop = new GradientStop();
stop.Color = (Color)ColorConverter.ConvertFromString("#FF2D2D30");
stop.Offset = parameters .Percent;
var result = new LinearGradientBrush();
result.StartPoint = new Point(0, 0);
result.EndPoint = new Point(1, 0);
result.GradientStops.Add(start);
result.GradientStops.Add(stop);
return result;
}
return null;
}
和 XAML
<UserControl.Resources>
<app:GradientProgressConverter x:Key="GradientProgressConverter" />
</UserControl.Resources>
<DataGrid>
<DataGrid.RowStyle>
<Style TargetType="DataGridRow">
<Style.Triggers>
<DataTrigger Binding="{Binding State}" Value="Started">
<Setter Property="Background" Value="{Binding Converter={StaticResource GradientProgressConverter}}" />
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
</<DataGrid>