我剛剛開始一個(gè)新的 WPF 應(yīng)用程序。我有一個(gè)網(wǎng)格，想要?jiǎng)討B(tài)創(chuàng)建行（例如按按鈕），然后在該行內(nèi)創(chuàng)建 TextView/ProgressBar。我已經(jīng)搜索過如何以編程方式創(chuàng)建網(wǎng)格行。但在每個(gè)解決方案中，我都無(wú)法訪問里面的內(nèi)容，并且它變得毫無(wú)用處。<Grid x:Name="MainGrid"> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <Button x:Name="AddLineButton" Content="Click to add a new line" Click="AddLineButton_Click"/> <Grid x:Name="beGrid" Grid.Row="1"><!-- I need my new rows here --> </Grid></Grid>int i = 0; //nb of rows private void AddLineButton_Click(object sender, RoutedEventArgs e) { Create_line(); i++; } private void Create_line() { RowDefinition gridRow = new RowDefinition(); gridRow.Height = new GridLength(1, GridUnitType.Star); beGrid.RowDefinitions.Add(gridRow); StackPanel stack = new StackPanel(); stack.Orientation = Orientation.Horizontal; TextBlock textBlock = new TextBlock(); textBlock.Text = "Question"; textBlock.Name = "Test" + i.ToString(); stack.Children.Add(textBlock); beGrid.Children.Add(stack); Grid.SetRow(stack, i); }我無(wú)法訪問以前創(chuàng)建的元素?；卮鸷螅?nbsp; private void Create_line() { RowDefinition gridRow = new RowDefinition(); gridRow.Height = new GridLength(1, GridUnitType.Star); beGrid.RowDefinitions.Add(gridRow); StackPanel stack = new StackPanel(); stack.Orientation = Orientation.Horizontal; TextBlock textBlock = new TextBlock(); textBlock.Text = "Question"; textBlock.Name = "Test" + i.ToString(); RegisterName(textBlock.Name, textBlock); stack.Children.Add(textBlock); beGrid.Children.Add(stack); Grid.SetRow(stack, i); }獲取創(chuàng)建的 TextBlock ：var text = (TextBlock)FindName("Test"+i.ToString());
2 回答
明月笑刀無(wú)情
TA貢獻(xiàn)1828條經(jīng)驗(yàn) 獲得超4個(gè)贊
您可以將所有創(chuàng)建的 StackPanel 存儲(chǔ)在列表中。
private void AddLineButton_Click(object sender, RoutedEventArgs e)
{
Create_line();
}
List<StackPanel> items;
private void Create_line()
{
RowDefinition gridRow = new RowDefinition();
gridRow.Height = new GridLength(1, GridUnitType.Star);
beGrid.RowDefinitions.Add(gridRow);
StackPanel stack = new StackPanel();
stack.Orientation = Orientation.Horizontal;
int i = items.Count + 1;
TextBlock textBlock = new TextBlock();
textBlock.Text = "Question";
textBlock.Name = "Test" + i.ToString();
stack.Children.Add(textBlock);
beGrid.Children.Add(stack);
Grid.SetRow(stack, items.Count);
items.Add(stack);
}
您可以通過索引訪問任何以前的面板，例如items[0]，并從Children屬性獲取元素：items[0].Children[0] as TextBlock
倚天杖
TA貢獻(xiàn)1828條經(jīng)驗(yàn) 獲得超3個(gè)贊
像這樣手動(dòng)創(chuàng)建控件確實(shí)不是 WPF 方式......
最好的方法是定義一個(gè)項(xiàng)目類，其中包含要顯示/編輯的每個(gè)值的屬性。
然后在窗口中創(chuàng)建ObservableCollection這些項(xiàng)目（因?yàn)槟鷮⒃趩螕舭粹o時(shí)手動(dòng)添加項(xiàng)目），并將其設(shè)置為控件ItemsSource的屬性ItemsControl。ADataTemplate用于定義精確的控件以顯示控件中的每個(gè)項(xiàng)目，該控件將綁定到該項(xiàng)目的屬性。
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