分享程序员开发的那些事...
更新时间：2022-09-18 22:12:05
代码注意事项：
1、代码实现的样式赋值
XXX.Style = TryFindResource("StyleName") as Style;
2.WPF中FindName方法的使用
(1)简单的使用 前台代码：
<Button x:Name="btnName" Click="btnName_Click">Test Method FindName</Button>
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后台代码:
private void btnName_Click(object sender, RoutedEventArgs e)
{
Button b = FindName("btnName") as Button;
MessageBox.Show(b.Name);
}
（2）在模板中使用FindName方法
<Grid> <Grid x:Name="childGrid">
<Button x:Name="rootBtn">
<Button.Template>
<ControlTemplate>
<Button x:Name="btnName" Click="btnName_Click">Test Method FindName</Button>
</ControlTemplate>
</Button.Template>
</Button>
</Grid>
</Grid>
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后台代码：
private void btnName_Click(object sender, RoutedEventArgs e)
{
Button b = rootBtn.Template.FindName("btnName",rootBtn) as Button;
MessageBox.Show(b.Name);
}
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3.使用多个绑定参数
<Button Height="23" Command="{Binding AddCommand}" Content="计算"
HorizontalAlignment="Left" Margin="20,0,0,49" Name="button1" VerticalAlignment="Bottom" Width="75">
<Button.CommandParameter>
<MultiBinding Converter="{StaticResource ParameterConverter}">
<Binding Path="Text" ElementName="textBox1"/>
<Binding Path="Text" ElementName="textBox2"/>
</MultiBinding>
</Button.CommandParameter>
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4、将代码写在XAML中
<Grid> <x:Code> <![CDATA[
private void button1_Click(object sender, RoutedEventArgs e)
{
button1.Background = Brushes.Blue;
button1.Content = "The code is in XAML";
MessageBox.Show("hi");
}
]]></x:Code>
<Button Height="23" Margin="46,56,32,0" Name="button1" VerticalAlignment="Top" Click="button1_Click">Click me!</Button>
</Grid> |
5、各属性对应的C#代码
5.1<Window><Grid><Button ...></Grid></window>
等效代码如下：
Grid g = new Grid();
Button b = new Button();
b.Width = 100;b.Height = 100;b.Content = "Test Button";
b.Foreground = Brushes.LightBlue;g.Children.Add(b);myWindow.AddChild(g); |
6、ItemContainerGenerator.ContainerFromIndex方法的使用
TreeViewItem item = (TreeViewItem)myTreeView.ItemContainerGenerator.ContainerFromIndex(1); |
7、WPF获取子控件和父控件方法
public class Globals
{
/// <summary>
/// 获取父控件方法。该方法将根据当前控件，遍历查找其父控件是否存在。参数1是表示当前子控件名，参数2是要查询父控件名；
/// </summary>
public T GetParentObject<T>(DependencyObject obj, string name) where T : FrameworkElement
{
DependencyObject parent = VisualTreeHelper.GetParent(obj);
while (parent != null)
{
if (parent is T && (((T)parent).Name == name | string.IsNullOrEmpty(name)))
{
return (T)parent;
}
parent = VisualTreeHelper.GetParent(parent);
}
return null;
}
/// <summary>
/// 该方法将根据当前控件，遍历查找其子控件是否存在。参数1是表示当前父控件名，参数2是要查询子控件名；
/// </summary>
public T GetChildObject<T>(DependencyObject obj, string name) where T : FrameworkElement
{
DependencyObject child = null;
T grandChild = null;
for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)
{
child = VisualTreeHelper.GetChild(obj, i);
if (child is T && (((T)child).Name == name | string.IsNullOrEmpty(name)))
{
return (T)child;
}
else
{
grandChild = GetChildObject<T>(child, name);
if (grandChild != null)
return grandChild;
}
}
return null;
}
/// <summary>
/// 该方法将把所有子控件作为List集合返回到客户端。
/// 其中第一个参数是父控件参数，而第二个参数是特定子控件名称，
/// 如果需要遍历全部子控件，第二个参数留空即可。
/// </summary>
public List<T> GetChildObjects<T>(DependencyObject obj, string name) where T : FrameworkElement
{
DependencyObject child = null;
List<T> childList = new List<T>();
for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)
{
child = VisualTreeHelper.GetChild(obj, i);
if (child is T && (((T)child).Name == name || string.IsNullOrEmpty(name)))
{
childList.Add((T)child);
}
childList.AddRange(GetChildObjects<T>(child, ""));
}
return childList;
}
}
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XAML：
Globals VTHelper = new Globals();
StackPanel sp = VTHelper.GetChildObject<StackPanel>(this.LayoutRoot, "spDemoPanel");
Grid layoutGrid = VTHelper.GetParentObject<Grid>(this.spDemoPanel, "LayoutRoot");
List<TextBlock> textblock = VTHelper.GetChildObjects<TextBlock>(this.LayoutRoot, "");
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8.GridSplitter控件的使用：
<Grid> <Grid.ColumnDefinitions>
<ColumnDefinition Width="90*" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="180*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="190*" />
<RowDefinition Height="Auto" />
<RowDefinition Height="70*" />
</Grid.RowDefinitions>
<Button Content="ButtonA" Margin="3" Grid.Row="0" Grid.Column="0" Grid.RowSpan="3" />
<Button Content="ButtonB" Margin="3" Grid.Row="0" Grid.Column="2" />
<Button Content="ButtonC" Margin="3" Grid.Row="2" Grid.Column="2" />
<GridSplitter Width="3" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Row="0" Grid.Column="1" Grid.RowSpan="3"></GridSplitter>
<GridSplitter Height="3" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Grid.Row="1" Grid.Column="2"></GridSplitter>
</Grid> |
效果图:
9.UniformGrid控件中每行没列都相等
<UniformGrid> <Button Content="ButtonA" />
<Button Content="ButtonB" />
<Button Content="ButtonC" />
<Button Content="ButtonD" />
<Button Content="ButtonE" />
<Button Content="ButtonF" />
<Button Content="ButtonG" />
<Button Content="ButtonH" />
</UniformGrid> |
如图：
本文转自Work Hard Work Smart博客园博客，原文链接：http://www.cnblogs.com/linlf03/archive/2011/09/07/2159169.html，如需转载请自行联系原作者