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我的代碼：如何從代碼中訪問XAML按鈕後面WPF
<DataGrid HorizontalAlignment="Stretch" ScrollViewer.HorizontalScrollBarVisibility="Hidden" BorderBrush="#83D744" IsSynchronizedWithCurrentItem="False" VerticalGridLinesBrush="Transparent" Grid.Column="0" RowHeaderWidth="0" CanUserAddRows="False" AutoGenerateColumns="False" x:Name="datagrid1" Margin="10,150,8,50" Background="Transparent" RowBackground="#FF494949" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" ItemsSource="{Binding}">
<DataGrid.Resources>
<Style TargetType="{x:Type DataGridColumnHeader}">
<Setter Property="Background" Value="#83D744"/>
<Setter Property="Opacity" Value="1"/>
<Setter Property="Foreground" Value="White"/>
<Setter Property="HorizontalContentAlignment" Value="Center" />
<Setter Property="FontSize" Value="18"/>
<Setter Property="FontFamily" Value="Arial"/>
<Setter Property="Height" Value="50"/>
</Style>
<Style x:Key="TextInCellCenter" TargetType="{x:Type TextBlock}" >
<Setter Property="TextAlignment" Value="Center"/>
</Style>
<Style TargetType="{x:Type TextBlock}" x:Key="RightAligElementStyle">
<Setter Property="TextAlignment" Value="Right"/>
</Style>
<Style TargetType="{x:Type TextBlock}" x:Key="LeftAligElementStyle">
<Setter Property="TextAlignment" Value="Left"/>
</Style>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}"
Color="Transparent"/>
</DataGrid.Resources>
<DataGrid.Columns >
<DataGridTextColumn Binding="{Binding ProductName}" ElementStyle="{StaticResource LeftAligElementStyle}" Header="NAZIV ARTIKLA" MinWidth="350" Foreground="White" FontSize="20" FontFamily="Verdana" />
<DataGridTextColumn Binding="{Binding Quantity}" ElementStyle="{StaticResource TextInCellCenter}" Header="KOLIČINA" MinWidth="200" Foreground="White" FontSize="20" FontFamily="Verdana" />
</DataGrid.Columns>
<DataGrid.GroupStyle>
<!-- Style for groups at top level. -->
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Expander IsExpanded="True" Background="Black" Opacity="0.7">
<Expander.Header >
<DockPanel Height="50" Margin="0,0,0,0" Name="dockPanel" Width="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGrid}}, Path=ActualWidth}">
<Button Name="btnFinishOrder" Content="Finish Order" Margin="0,0,55,5" DockPanel.Dock="Right" Click="btnFinishOrder_Click" FontSize="12" BorderThickness="1.5" HorizontalAlignment="Left" VerticalAlignment="Bottom" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Foreground="#83D744" Background="Transparent" BorderBrush="#83D744" Width="130" Height="40">
<Button.Template>
<ControlTemplate TargetType="Button">
<Border BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush= "{TemplateBinding BorderBrush}"
Background= "{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
</Border>
</ControlTemplate>
</Button.Template>
</Button>
<Button Name="btnTakeIt" Click="btnTakeIt_Click" Content="Take it" Margin="0,0,20,5" DockPanel.Dock="Right" FontSize="12" BorderThickness="1.5" HorizontalAlignment="Left" VerticalAlignment="Bottom" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Foreground="#83D744" Background="Transparent" BorderBrush="#83D744" Width="130" Height="40">
<Button.Template>
<ControlTemplate TargetType="Button">
<Border BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="{TemplateBinding BorderBrush}"
Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
</Border>
</ControlTemplate>
</Button.Template>
</Button>
<TextBlock FontWeight="Normal" FontFamily="Verdana" FontSize="20" Height="25" Foreground="#83D744" Text="{Binding Path=Name,StringFormat= Number of Order:# {0}}" />
</DockPanel>
</Expander.Header>
<Expander.Content>
<ItemsPresenter />
</Expander.Content>
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</DataGrid.GroupStyle>
那裏你可以看到球員，當我點擊按鈕Click="btnTakeIt_Click"我programaticaly改變按鈕文本「訂單正在進行中」。我在我的數據庫IsInProgres 1更新場 - 真，代碼是在這裏：
private void btnTakeIt_Click(object sender, RoutedEventArgs e)
{
Button b = sender as Button;
CollectionViewGroup group = b.DataContext as CollectionViewGroup;
var x = group.Name;
int orderNumber = Convert.ToInt32(x);
b.BorderBrush = null;
b.Content = "Order is in progress";
b.FontSize = 12;
OrdersController.SetOrderInProgressByID(orderNumber);
}
但發生了什麼，因爲我刷新我的網格每20秒我的按鈕內容再次成爲喜歡它的缺省「拿去！」因爲這就是用XAML寫的。
像這樣： 
這是我後面的代碼（更新每隔幾秒鐘）：
public MainWindow()
{
try
{
InitializeComponent();
this.WindowStartupLocation = WindowStartupLocation.CenterScreen;
this.WindowState = WindowState.Maximized;
var ordersList = OrdersController.localOrders();
collectionViewSource.Source = ordersList;
collectionViewSource.GroupDescriptions.Add(new PropertyGroupDescription("NumberOfOrder"));
DataContext = collectionViewSource;
DispatcherTimer timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromSeconds(20);
timer.Tick += timer_Tick;
timer.Start();
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
void timer_Tick(object sender, EventArgs e)
{
var ordersList = OrdersController.localOrders();
collectionViewSource.Source = null;
collectionViewSource.Source = ordersList;
DataContext = collectionViewSource;
datagrid1.ScrollIntoView(datagrid1.Items[datagrid1.Items.Count - 1]);
}
}
所以我的問題是我能以某種方式循環我localOrders和檢查有IsInProgress = 1並且簡單地設置：
btnTakeIt.Content="Order in progress.."
所以每次我的網格刷新我可以循環我的命令，並檢查是爲了InProgress之後，我可以設置按鈕btnTakeIt內容爲「在建訂單。」
或者，如果有任何其他的方式，我打開試試吧！
PS我想媒體鏈接，但我的btnTakeIt是無法訪問的代碼:(
編輯背後：
void timer_Tick(object sender, EventArgs e)
{
Button MyButton = FindChild<Button>(datagrid1, "btnTakeIt");
var ordersList = OrdersController.localOrders();
collectionViewSource.Source = null;
collectionViewSource.Source = ordersList;
foreach (var item in ordersList)
{
if (item.IsInProgress== true)
{
MyButton.Content = "Order is in progress";
}
}
DataContext = collectionViewSource;
}
我可以做這樣我檢查debuger，它是if語句內進入當我看着它斷點變化acctualy的內容，但對電網我什麼都看不到改變:(
編輯：
我不得不提到我的類產品被包含在我的OrdersController :)
@Ayuman 你覺得這個怎麼樣：
<Button Name="btnTakeIt" DataContext="{Binding Items[0]}" Content="{Binding Status}"Click="btnTakeIt_Click" Content="Take it" Margin="0,0,20,5" DockPanel.Dock="Right" FontSize="12" BorderThickness="1.5" HorizontalAlignment="Left" VerticalAlignment="Bottom" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Foreground="#83D744" Background="Transparent" BorderBrush="#83D744" Width="130" Height="40">
<Button.Template>
<ControlTemplate TargetType="Button">
<Border BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="{TemplateBinding BorderBrush}"
Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
</Border>
</ControlTemplate>
</Button.Template>
</Button>
後面的代碼：
public static List<LocalOrders> localOrders()
{
var results = DataServices.POS.proc_GetAllOrders().ToList();
List<LocalOrders> localOrdersList = new List<LocalOrders>();
foreach (var item in results)
{
LocalOrders lokal = new LocalOrders();
if (item.IsInProgress)
{
localo.Pihvacena = true;
localo.Status = "IN PROCESS";
}
else
{
lokalne.Status = "IT IS NOT YET IN PROCESS";
}
lokal.User = item.User;
lokal.Quantity = Convert.ToInt32(item.Quantity);
lokal.Title = item.Title;
lokal.NumberOfOrder = item.NumberOfOrder;
localOrdersList.Add(lokal);
}
return localOrdersList;
}
因此，我可以programaticaly檢查訂單的狀態，並設置按鈕的內容像是..它可能是好的解決方案嗎？
你可以使用在帖子中建議的方法遍歷可視樹。 http://stackoverflow.com/questions/16997951/how-to-access-datagrid-template-column-textbox-text-wpf-c-sharp –
@Ayyappan Subramanian我從你的鏈接編輯下面的帖子，你可以採取看編輯隊友，我可能犯了一些錯誤，我發現按鈕，它的內容，但我不能改變它的方式。檢查編輯夥計 –
我認爲你沒有改變文本文本都說「訂單正在進行中」。 –