WPF开发快速入门【1】WPF的布局

标签：控件 入门 布局 Visibility WPF 面板 public IsRightShow

概述

本文描述几款WPF中常用的布局控件。

 

Grid

Grid是WPF最常用的布局控件。 它把面板分割为固定长和宽的网格，子控件就放置在网格内。

    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="100"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="2*"/>
        </Grid.ColumnDefinitions>

        <TextBlock Text="hello" Grid.Column="0" Grid.ColumnSpan="2" HorizontalAlignment="Center" Margin="10"/>
    </Grid>

Grid控件有两个显著的特点：

1、行高和列宽可以设定为固定值，也可以按比例分配；

2、可以跨行或跨列。

 

StackPanel

StackPanel按顺序依次排列控件，通过Orientation="Horizontal"或Orientation="Vertical"来控制列表的方向。 

    <StackPanel Orientation="Horizontal">
        <TextBlock Text="Hello"/>
    </StackPanel>

 

GridSplitter

通过GridSplitter可以调整两个网格的宽度或高度。 

            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" MinWidth="150"/>
                    <ColumnDefinition Width="3"/>
                    <ColumnDefinition Width="2*" MinWidth="200"/>
                </Grid.ColumnDefinitions>

                <Grid Grid.Column="0" Background="WhiteSmoke"/>
                <GridSplitter Grid.Column="1" Background="CornflowerBlue"/>
                <Grid Grid.Column="2" Background="LightGray" />
            </Grid>

GridSplitter的宽度和颜色都可以设置。

 

DockPanel

DockPanel控件可以在主要的显示面板周五显示可以停靠的面板。 

            <DockPanel>
                <Grid Width="200" DockPanel.Dock="Left" Background="SeaGreen" Visibility="{Binding LeftVisibility}"/>
                <Grid Width="200" DockPanel.Dock="Right" Background="Orchid" Visibility="{Binding RightVisibility}"/>
                <Grid  Background="Silver">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="100"/>
                        <ColumnDefinition Width="*"/>
                        <ColumnDefinition Width="100"/>
                    </Grid.ColumnDefinitions>

                    <Button Grid.Column="0" Content="Left" Width="80" Height="30" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="5"
                            Command="{s:Action LeftClick}"/>
                    <Button Grid.Column="2" Content="Right" Width="80" Height="30" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="5"
                            Command="{s:Action RightClick}"/>
                </Grid>
            </DockPanel>

需要注意的是，主面板一定要放在最后描述。通过下面代码可以显示或隐藏Dock面板： 

    public class PageLayoutViewModel : Screen
    {
        public bool IsLeftShow { get; set; } = true;
        public bool IsRightShow { get; set; } = true;

        public Visibility LeftVisibility => IsLeftShow ? Visibility.Visible : Visibility.Collapsed;
        public Visibility RightVisibility => IsRightShow ? Visibility.Visible : Visibility.Collapsed;

        public void LeftClick()
        {
            IsLeftShow = !IsLeftShow;
        }

        public void RightClick()
        {
            IsRightShow = !IsRightShow;
        }
    }

View Code

  

DockPanelSplitter

有没有既可以停靠又可以调整宽度的面板呢？官方没有提供，但git上有。

下载地址：JVimes/DockPanelSplitter: Like WPF's GridSplitter, but for DockPanel instead of Grid. (github.com)

 

资源

系列目录：WPF开发快速入门【0】前言与目录 

代码下载：Learn WPF: WPF学习笔记 (gitee.com)

标签：控件,入门,布局,Visibility,WPF,面板,public,IsRightShow
From： https://www.cnblogs.com/seabluescn/p/16539591.html