WPF新手在这里。我正在尝试构建一张我希望在一周中的每一天重复使用的表格。所以我把它移到了控制模板上。这里是XAML:访问C中的控件模板内的控件#
<ControlTemplate x:Key="defaultGridDesign" >
<Grid HorizontalAlignment="Center" Margin="0,5">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80"/>
<ColumnDefinition Width="80"/>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition Height="60"/>
<RowDefinition Height="60"/>
</Grid.RowDefinitions>
<Label x:Name="lblDayOfWeek" Style="{StaticResource BasicLabelLeft}" Grid.Row="0" Grid.Column="0" Grid.RowSpan="3" Content="Monday"/>
<Label x:Name="lblEmpty" Style="{StaticResource BasicLabelLeft}" Grid.Row="0" Grid.Column="1"/>
<Label x:Name="lblPlanned" Style="{StaticResource BasicLabelLeft}" Content="Planned" Grid.Row="1" Grid.Column="1"/>
<Label x:Name="lblProduced" Style="{StaticResource BasicLabelLeft}" Content="Produced" Grid.Row="2" Grid.Column="1"/>
<Label x:Name="lblPrevShift" Style="{StaticResource BasicLabelCenter}" Content="Previous Shift" Grid.Row="0" Grid.Column="2" />
<Label x:Name="lblPlannedPrevShift" Style="{StaticResource BasicLabelLeft}" Content="n/a" Grid.Row="1" Grid.Column="2" />
<Label x:Name="lblProducedPrevShift" Style="{StaticResource BasicLabelLeft}" Content="n/a" Grid.Row="2" Grid.Column="2" />
<Label x:Name="lbl1stHr" Style="{StaticResource BasicLabelCenter}" Content="01" Grid.Row="0" Grid.Column="3" />
<Label x:Name="lbl2ndHr" Style="{StaticResource BasicLabelCenter}" Content="02" Grid.Row="0" Grid.Column="4" />
<Label x:Name="lbl3rdHr" Style="{StaticResource BasicLabelCenter}" Content="03" Grid.Row="0" Grid.Column="5" />
<Label x:Name="lbl4thHr" Style="{StaticResource BasicLabelCenter}" Content="04" Grid.Row="0" Grid.Column="6" />
<Label x:Name="lbl5thHr" Style="{StaticResource BasicLabelCenter}" Content="05" Grid.Row="0" Grid.Column="7" />
<Label x:Name="lbl6thHr" Style="{StaticResource BasicLabelCenter}" Content="06" Grid.Row="0" Grid.Column="8" />
<Label x:Name="lbl7thHr" Style="{StaticResource BasicLabelCenter}" Content="07" Grid.Row="0" Grid.Column="9" />
<Label x:Name="lbl8thHr" Style="{StaticResource BasicLabelCenter}" Content="08" Grid.Row="0" Grid.Column="10"/>
<Label x:Name="lblTotal" Style="{StaticResource BasicLabelCenter}" Content="Total" Grid.Row="0" Grid.Column="11"/>
<Label x:Name="lblNextShift" Style="{StaticResource BasicLabelCenter}" Content="Next Shift" Grid.Row="0" Grid.Column="12"/>
<Label x:Name="lblPlannedTotal" Style="{StaticResource BasicLabelLeft}" Content="n/a" Grid.Row="1" Grid.Column="11"/>
<Label x:Name="lblPlannedNextShift" Style="{StaticResource BasicLabelLeft}" Content="n/a" Grid.Row="1" Grid.Column="12"/>
<Label x:Name="lblProducedTotal" Style="{StaticResource BasicLabelLeft}" Content="n/a" Grid.Row="2" Grid.Column="11"/>
<Label x:Name="lblShiftOEE" Style="{StaticResource BasicLabelLeft}" Content="n/a" Grid.Row="2" Grid.Column="12"/>
<StackPanel x:Name="stkPnlPlanned" Grid.Row="1" Grid.Column="3" Grid.ColumnSpan="8" Width="480"/>
<StackPanel x:Name="stkPnlProduced" Grid.Row="2" Grid.Column="3" Grid.ColumnSpan="8" Width="480"/>
</Grid>
</ControlTemplate>
这是我如何实例化它们:
<StackPanel>
<ContentControl Template="{StaticResource defaultGridDesign}" x:Name="ccTuesday"></ContentControl>
<ContentControl Template="{StaticResource defaultGridDesign}" x:Name="ccWednesday" />
<ContentControl Template="{StaticResource defaultGridDesign}" x:Name="ccThursday" />
<ContentControl Template="{StaticResource defaultGridDesign}" x:Name="ccFriday" />
<ContentControl Template="{StaticResource defaultGridDesign}" x:Name="ccSaturday" />
<ContentControl Template="{StaticResource defaultGridDesign}" x:Name="ccMonday" />
</StackPanel>
现在,我撞了南墙,是当我想要绑定的控件模板内的标签。我在网上找到的每一个绑定例子都使用了一个基本的例子,我还没有找到一个能够解决这种情况的例子。我基本上想在第一列设置小时数,第一列设置小时数,但最终我需要根据从Excel文件中读取的内容来填充堆叠面板。我期望堆叠面板的装订/填充是一个完整的其他球场。每个表获得不同的信息。每个小时,我需要更新它们中的每一个。
我已经试过这无济于事:
Label test = (Label) this.ccTuesday.Template.FindName("lblDayOfWeek", ccTuesday);
但结果是零。
而且我一直在这里看着这个讨论: https://codereview.stackexchange.com/questions/44760/is-there-a-better-way-to-get-a-child
但它确实似乎为了访问一个标签,一个很大的开销。
同样,我是一个新手,所以我不知道我是否正确地做了。也许有更好更优雅的方式来做到这一点。欢迎任何建议。
编辑1:
以下作品的答案,但是当我尝试执行视图和模型之间的ViewModel类,在这个环节http://www.codeproject.com/Articles/819294/WPF-MVVM-step-by-step-Basics-to-Advance-Level#Level3:-Addingactionsand“INotifyPropertyChanged的”接口
标签回去空着。
View类:
public partial class MainWindow : Window
{
private TableViewModel tableViewModelMonday = null;
private TableViewModel tableViewModelTuesday = null;
public MainWindow()
{
InitializeComponent();
try
{
this.tableViewModelMonday = new TableViewModel("Monday");
this.tableViewModelTuesday = new TableViewModel("Tuesday");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void ccTuesday_Loaded(object sender, RoutedEventArgs e)
{
this.ccTuesday.DataContext = this.tableViewModelTuesday;
}
private void ccMonday_Loaded(object sender, RoutedEventArgs e)
{
this.ccMonday.DataContext = this.tableViewModelMonday;
}
的App.xaml中,其中结合是:
<Label x:Name="lblDayOfWeek" Style="{StaticResource BasicLabelLeft}" Grid.Row="0" Grid.Column="0" Grid.RowSpan="3" Content="{Binding dayOfWeek}"/>
视图模型类:
public class TableViewModel : INotifyPropertyChanged
{
private TableModel tableModel = null;
public TableViewModel(string day)
{
tableModel = new TableModel(day);
}
public string lblDayOfWeek
{
get
{
return tableModel.dayOfWeek;
}
set
{
if (tableModel.dayOfWeek != value)
{
tableModel.dayOfWeek = value;
this.OnNotifyPropertyChanged("dayOfWeek");
}
}
}
private void OnNotifyPropertyChanged(string msg)
{
if (this.PropertyChanged != null)
{
this.PropertyChanged(this, new PropertyChangedEventArgs(msg));
}
}
public event PropertyChangedEventHandler PropertyChanged;
}
和模型类:
public class TableModel
{
private string _dayOfWeek;
public string dayOfWeek
{
get
{
return this._dayOfWeek;
}
set
{
if (this._dayOfWeek != value)
{
this._dayOfWeek = value;
}
}
}
public TableModel(string day)
{
this._dayOfWeek = day;
}
}
我错过了什么?
你能指定你想通过'Template.FindName(“lblDayOfWeek”,ccTuesday)获得标签吗?在构造函数或其他地方? – Grx70
@ Grx70在主窗口的构造函数中,只是为了测试出来 – CostaRica
好吧,那就是问题 - 在这一点上,控件被实例化,但是它们的模板还没有被应用,因此'null'结果。一旦应用了模板,您就需要使用这种方法 - 您最好的办法是在'Window'或'ContentControl'本身上订阅'Loaded'事件。或者,如果您需要在加载控件之前获取模板内容,请创建一个来自“ContentControl”(甚至是“Control”,如果您不打算放入任何内容)的控件,并覆盖“ OnApplyTemplate'方法。 – Grx70