0
我有一個WPF應用程序。我有一個名爲Metro.xaml的資源字典。我在這個資源字典中添加了一些樣式。在我爲日曆及其部件添加控制模板之前，它運行良好。ResourceDictionary中的運行時錯誤：{「密鑰不能爲空。 r nParameter name：key」}
這裏是叫Metro.xaml的資源字典：
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:c="clr-namespace:DairyManagement.Converters"
xmlns:powerMask="clr-namespace:DairyManagement.PowerControls.MaskedTextbox">
<Style TargetType="{x:Type FrameworkElement}" x:Key="baseStyle">
<Setter Property="TextElement.FontSize" Value="30" />
<Setter Property="TextElement.FontFamily" Value="Nilkanth" />
</Style>
<!--Calendar-->
<Style TargetType="Calendar">
<Setter Property="IsTabStop" Value="False" />
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFD3DEE8" Offset="0" />
<GradientStop Color="#FFD3DEE8" Offset="0.16" />
<GradientStop Color="#FFFCFCFD" Offset="0.16" />
<GradientStop Color="#FFFFFFFF" Offset="1" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="BorderThickness" Value="1" />
<Setter Property="BorderBrush">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFA3AEB9" Offset="0" />
<GradientStop Color="#FF8399A9" Offset="0.375" />
<GradientStop Color="#FF718597" Offset="0.375" />
<GradientStop Color="#FF617584" Offset="1" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Calendar">
<StackPanel x:Name="Root" HorizontalAlignment="Center">
<CalendarItem x:Name="CalendarItem" Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" />
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="CalendarItem">
<!-- eliminated-->
</Style>
<Style TargetType="CalendarDayButton">
<Setter Property="Background" Value="#FFBADDE9" />
<Setter Property="FontSize" Value="10" />
<Setter Property="HorizontalContentAlignment" Value="Center" />
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="MinWidth" Value="5" />
<Setter Property="MinHeight" Value="5" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="CalendarDayButton">
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.1" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal" />
<VisualState x:Name="MouseOver">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Background" Storyboard.TargetProperty="Opacity" To=".5"
Duration="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Background" Storyboard.TargetProperty="Opacity" To=".5"
Duration="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Background" Storyboard.TargetProperty="Opacity" To="0"
Duration="0" />
<DoubleAnimation Storyboard.TargetName="Content" Storyboard.TargetProperty="Opacity" To=".35"
Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Unselected" />
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SelectedBackground" Storyboard.TargetProperty="Opacity" To=".75"
Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="CalendarButtonFocusStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0" />
</VisualStateGroup.Transitions>
<VisualState x:Name="CalendarButtonFocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisual"
Storyboard.TargetProperty="Visibility" Duration="0">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="CalendarButtonUnfocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisual"
Storyboard.TargetProperty="Visibility" Duration="0">
<DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="ActiveStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Active" />
<VisualState x:Name="Inactive">
<Storyboard>
<ColorAnimation Storyboard.TargetName="Content"
Storyboard.TargetProperty="(ContentControl.Foreground).(GradientBrush.GradientStops)[2].(GradientStop.Color)"
To="#FF777777" Duration="0" />
<ColorAnimation Storyboard.TargetName="Content"
Storyboard.TargetProperty="(ContentControl.Foreground).(GradientBrush.GradientStops)[3].(GradientStop.Color)"
To="#FF777777" Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="DayStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0" />
</VisualStateGroup.Transitions>
<VisualState x:Name="RegularDay" />
<VisualState x:Name="Today">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="TodayBackground" Storyboard.TargetProperty="Opacity" To="1"
Duration="0" />
<DoubleAnimation Storyboard.TargetName="Content"
Storyboard.TargetProperty="(ContentControl.Foreground).(GradientBrush.GradientStops)[1].(GradientStop.Offset)"
To="1" Duration="0" />
<DoubleAnimation Storyboard.TargetName="Content"
Storyboard.TargetProperty="(ContentControl.Foreground).(GradientBrush.GradientStops)[2].(GradientStop.Offset)"
To="1" Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="BlackoutDayStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0" />
</VisualStateGroup.Transitions>
<VisualState x:Name="NormalDay" />
<VisualState x:Name="BlackoutDay">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="BlackoutVisual" Storyboard.TargetProperty="Opacity" To=".2"
Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle x:Name="TodayBackground" RadiusX="1" RadiusY="1" Opacity="0" Fill="#FFAAAAAA" />
<Rectangle x:Name="SelectedBackground" RadiusX="1" RadiusY="1" Opacity="0" Fill="{TemplateBinding Background}" />
<Rectangle x:Name="Background" RadiusX="1" RadiusY="1" Opacity="0" Fill="{TemplateBinding Background}" />
<ContentControl x:Name="Content" IsTabStop="False" Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
FontSize="{TemplateBinding FontSize}" Margin="5,1,5,1">
<ContentControl.Foreground>
<LinearGradientBrush>
<GradientStop Offset="0" Color="#FFFFFFFF" />
<GradientStop Offset="0" Color="#FFFFFFFF" />
<GradientStop Offset="0" Color="#FF333333" />
<GradientStop Offset="1" Color="#FF333333" />
</LinearGradientBrush>
</ContentControl.Foreground>
</ContentControl>
<Path x:Name="BlackoutVisual" Opacity="0" Margin="3" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
RenderTransformOrigin="0.5,0.5" Fill="#FF000000" Stretch="Fill"
Data="M8.1772461,11.029181 L10.433105,11.029181 L11.700684,12.801641 L12.973633,11.029181 L15.191895,11.029181 L12.844727,13.999395 L15.21875,17.060919 L12.962891,17.060919 L11.673828,15.256231 L10.352539,17.060919 L8.1396484,17.060919 L10.519043,14.042364 z" />
<Rectangle x:Name="FocusVisual" Visibility="Collapsed" IsHitTestVisible="false" RadiusX="1" RadiusY="1" Stroke="#FF6DBDD1" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="CalendarButton">
<Setter Property="Background" Value="#FFBADDE9" />
<Setter Property="FontSize" Value="10" />
<Setter Property="HorizontalContentAlignment" Value="Center" />
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="MinWidth" Value="40" />
<Setter Property="MinHeight" Value="42" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="CalendarButton">
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.1" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal" />
<VisualState x:Name="MouseOver">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Background" Storyboard.TargetProperty="Opacity"
To=".5" Duration="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="Background" Storyboard.TargetProperty="Opacity" To=".5"
Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Unselected" />
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SelectedBackground" Storyboard.TargetProperty="Opacity" To=".75"
Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="ActiveStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Active" />
<VisualState x:Name="Inactive">
<Storyboard>
<ColorAnimation Storyboard.TargetName="Content"
Storyboard.TargetProperty="(ContentControl.Foreground).(SolidColorBrush.Color)"
To="#FF777777" Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="CalendarButtonFocusStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0" />
</VisualStateGroup.Transitions>
<VisualState x:Name="CalendarButtonFocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisual" Storyboard.TargetProperty="Visibility"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="CalendarButtonUnfocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisual" Storyboard.TargetProperty="Visibility"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle x:Name="SelectedBackground" RadiusX="1" RadiusY="1" Opacity="0" Fill="{TemplateBinding Background}" />
<Rectangle x:Name="Background" RadiusX="1" RadiusY="1" Opacity="0" Fill="{TemplateBinding Background}" />
<ContentControl x:Name="Content" IsTabStop="False" Foreground="#FF333333" Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
FontSize="{TemplateBinding FontSize}" Margin="1,0,1,1" />
<Rectangle x:Name="FocusVisual" Visibility="Collapsed" IsHitTestVisible="false" RadiusX="1" RadiusY="1" Stroke="#FF6DBDD1" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<ControlTemplate x:Key="DatePickerTextBoxControlTemplate" TargetType="DatePickerTextBox">
<Grid>
<Grid.Resources>
<SolidColorBrush x:Key="G">#FFAAAAAA</SolidColorBrush>
</Grid.Resources>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup Name="CommonStates" />
<VisualStateGroup Name="WatermarkStates" />
<VisualStateGroup Name="FocusStates" />
</VisualStateManager.VisualStateGroups>
<Border BorderThickness="{TemplateBinding Border.BorderThickness}" Padding="{TemplateBinding Control.Padding}" CornerRadius="1,1,1,1"
BorderBrush="{TemplateBinding Border.BorderBrush}" Background="{TemplateBinding Panel.Background}" Name="Border" Opacity="1">
<Grid Name="WatermarkContent" HorizontalAlignment="{TemplateBinding Control.HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding Control.VerticalContentAlignment}">
<Border BorderThickness="1,1,1,1" BorderBrush="#FFFFFFFF" Name="ContentElement" />
<Border BorderThickness="1,1,1,1" BorderBrush="#FFFFFFFF" Name="watermark_decorator">
<ContentControl Padding="2,2,2,2" Name="PART_Watermark" Opacity="0" IsHitTestVisible="False" Focusable="False" />
</Border>
<ScrollViewer HorizontalContentAlignment="{TemplateBinding Control.HorizontalContentAlignment}"
VerticalContentAlignment="{TemplateBinding Control.VerticalContentAlignment}"
Name="PART_ContentHost" Margin="0,0,0,0" />
<Border CornerRadius="1,1,1,1" BorderBrush="#FF45D6FA" Name="FocusVisual" Opacity="0" IsHitTestVisible="False" />
</Grid>
</Border>
</Grid>
</ControlTemplate>
<Style x:Key="DatePickerCalendarStyle"
TargetType="{x:Type Calendar}"
BasedOn="{StaticResource {x:Type Calendar}}" />
<!--The template for the button that displays the calendar.-->
<Style x:Key="DropDownButtonStyle" TargetType="Button">
<!-- eliminated-->
</Style>
<!--DatePicker-->
<Style TargetType="{x:Type DatePicker}" BasedOn="{StaticResource baseStyle}">
<!-- eliminated-->
</Style>
</ResourceDictionary>
注：我已經消除了一些風格這是沒有必要的問題，因爲stackoverflow.com不允許我有個字符超過30000
我得到一個運行時錯誤：添加值到'System.Windows.ResourceDictionary'類型的字典引發異常。
當我去到內部異常，我得到：{「鍵不能爲空\ r \ n參數名：關鍵」}
下面是內部異常的堆棧跟蹤：
at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add)
at System.Collections.Hashtable.Add(Object key, Object value)
at System.Windows.ResourceDictionary.AddWithoutLock(Object key, Object value)
at System.Windows.ResourceDictionary.Add(Object key, Object value)
at System.Xaml.Schema.XamlTypeInvoker.AddToDictionary(Object instance, Object key, Object item)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.AddToDictionary(Object collection, XamlType dictionaryType, Object value, XamlType valueXamlType, Object key)
讓我澄清一下。如果我將日曆樣式註釋掉，那麼它可以正常工作。所以，問題部分是日曆的樣式。所以，我沒有註釋日曆的風格，並提供了一個關鍵。然後查看DatePickerCalendarStyle的樣式。我還將BasedOn屬性的值更改爲該鍵。但現在它不起作用。我的意思是它給了我同樣的錯誤。如果我刪除BasedOn然後它工作正常。 – Vishal 2014-09-03 05:50:05
我剛剛將您的ResourceDictionary添加到新的WPF項目，它似乎很好。所以問題可能在別的地方。 – venerik 2014-09-03 06:14:46
好的，我會試着弄清楚，並告訴你我是否有任何解決方案。 – Vishal 2014-09-03 06:15:39