我试图在 Visual Studio 2008 中查看由其他人(前雇员)开发的表单,但是当我尝试查看 MainForm.xaml(它无法在设计器视图中加载)时不断遇到以下错误:
错误无法创建类型为“NumericTextBox”的实例。D:\MySolution\GUI\MainForm.xaml
我的解决方案是这样组织的(为了简洁而缩短 - 这是发生错误的最后一行):
\solution
\Gui
\App.xaml
\MainForm.xaml
\Utils
\NumericTextBox.cs
我的 MainForm.xaml 看起来像这样:
<Window x:Class="MyCompany.MyDepartment.MyProject.MainForm"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:MyCompany.MyDepartment.MyProject"
xmlns:myproject="clr-namespace:MyCompany.MyDepartment.MyProject;assembly=MyProject"
xmlns:dsp="clr-namespace:MyCompany.MyDepartment.MyProject.DSP;assembly=MyProject"
xmlns:filters="clr-namespace:MyCompany.MyDepartment.DSP.Filters;assembly=DSP"
xmlns:mydepartment="clr-namespace:MyCompany.MyDepartment.Utils;assembly=Utils"
xmlns:scope="clr-namespace:MyCompany.MyDepartment;assembly=ScopeControl"
Title="MyProject" Height="900" Width="1024"
Loaded="Window_Loaded"
Closing="Window_Closing" ResizeMode="CanResize" Icon="/MyProjectGUI;component/MyProjectGUI.ico">
<Window.Resources>
...
</Window.Resources>
<DockPanel>
<StackPanel DockPanel.Dock="Left" CanVerticallyScroll="True" CanHorizontallyScroll="False">
<GroupBox Name="SensorControlGroup" Header="Sensor Control">
...
</GroupBox>
<GroupBox Header="Sensor State">
<StackPanel Name="SensorStackPanel">
<Expander Name="EnvironmentExpander" Header="Environment">
...
</Expander>
<Expander Name="SynthExpander" Header="Synthesiser" IsExpanded="True">
<Border Margin="2" Background="White" Padding="3">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="120"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Label Grid.Column="0" Grid.Row="0">Frequency (MHz):</Label>
<mydepartment:NumericTextBox Grid.Column="1"
x:Name="SynthFrequency" DecimalPlaces="3"
Maximum="0" Minimum="0" />
什么可能导致该错误?一切都可以编译,但是当我运行它时应用程序崩溃了。我希望这两个问题可能是一个相关的问题。