WPF 文本框最大宽度答案

【问题标题】：WPF textbox max widthWPF 文本框最大宽度
【发布时间】：2019-04-12 14:08:54
【问题描述】：

我希望 MyTextBox 占用整个宽度。标签的大小将根据所选语言而变化，并展开第一列。网格的第二列包括 MyTextBox 并且应该相应地扩展以吃掉整个宽度。我尝试了 HorizontalAlignment="Stretch 但似乎大小是根据第二列的第一行（堆栈面板）定义的。有什么想法吗？

<TabControl Grid.Row="1"  Margin="0 4 0 0" >
                    <TabItem Style="{DynamicResource MenuLevel2}" Header="Online Meeting">
                        <Grid HorizontalAlignment="Stretch" Width="Auto">
                            <Grid.RowDefinitions>
                                <RowDefinition Height="32" />
                                <RowDefinition Height="32" />
                            </Grid.RowDefinitions>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                                <ColumnDefinition Width="Auto" />
                            </Grid.ColumnDefinitions>
                            <Label VerticalAlignment="Center" Grid.Row="0" Grid.Column="0">Default Passcode</Label>
                            <StackPanel Grid.Row="0" Grid.Column="1" Orientation="Horizontal" VerticalAlignment="Center" Margin="10 0 0 0" HorizontalAlignment="Stretch" Width="Auto" >
                                <TextBox MaxLength="100"  horizontalAlignment="Stretch" Margin="0 0 10 0"/>
                                <CheckBox  VerticalAlignment="Center" HorizontalAlignment="Stretch" Click="chkBox_OMRandomPIN_Click"/>
                                <Label  Content="Random" Margin="0 1 0 0" Width="56" HorizontalAlignment="Stretch" />
                            </StackPanel>
                        <Label Grid.Row="1" Grid.Column="0"  Content="Default location label" VerticalAlignment="Center" />
                            <TextBox Grid.Row="1" Grid.Column="1" MaxLength="100" Name="MyTextBox" Margin="11,3,0,3" Height="25" HorizontalAlignment="Stretch" />
                        </Grid>
                    </TabItem>

【问题讨论】：

标签： wpf wpf-controls

【解决方案1】：

你的自动宽度太多了。

特别是堆栈面板所在的列。

这对我有用：

    <TabControl Grid.Row="1"  Margin="0 4 0 0" >
        <TabItem  Header="Online Meeting">
            <Grid >
                <Grid.RowDefinitions>
                    <RowDefinition Height="32" />
                    <RowDefinition Height="32" />
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <Label VerticalAlignment="Center" Grid.Row="0" Grid.Column="0">Default Passcode</Label>
                <StackPanel Grid.Row="0" Grid.Column="1" Orientation="Horizontal" VerticalAlignment="Center" Margin="10 0 0 0" HorizontalAlignment="Stretch">
                    <TextBox MaxLength="100" HorizontalAlignment="Stretch" Margin="0 0 10 0"/>
                    <CheckBox  VerticalAlignment="Center" HorizontalAlignment="Stretch" Click="chkBox_OMRandomPIN_Click"/>
                    <Label  Content="Random" Margin="0 1 0 0" Width="56" HorizontalAlignment="Stretch" />
                </StackPanel>
                <Label Grid.Row="1" Grid.Column="0"  Content="Default location label" VerticalAlignment="Center" />
                <TextBox Grid.Row="1" Grid.Column="1" MaxLength="100" Name="MyTextBox" Margin="11,3,0,3" Height="25"  />
            </Grid>
        </TabItem>

需要特别注意的事情。

我从堆栈面板的宽度中删除了 Auto，并将第二列设为 * 而不是 auto

【讨论】：