我的Xaml代码：
<Grid>
<Grid.Background>
<ImageBrush ImageSource="background.jpg"/>
</Grid.Background>
<TextBlock x:Name="textBlock" HorizontalAlignment="Left" Height="52" Margin="10,10,0,0" TextWrapping="Wrap" Text="Welcome to University Portal" VerticalAlignment="Top" Width="456" FontSize="24" FontWeight="Bold" FontStyle="Italic" FontFamily="SimSun" TextAlignment="Center"/>
<TextBlock x:Name="textBlock_Copy" HorizontalAlignment="Left" Height="17" Margin="10,62,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="456" FontWeight="Bold" FontStyle="Italic" FontFamily="SimSun"><Run Text=" * Select your Domain."/></TextBlock>
<Button x:Name="teacher_btn" Content="Teacher" HorizontalAlignment="Left" VerticalAlignment="Top" Width="150" Height="50" Margin="10,89,0,0" FontFamily="SimSun" FontSize="22" FontWeight="Bold" FontStyle="Italic" Click="teacher_btn_Click">
<Button.BorderBrush>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="White" Offset="1"/>
</LinearGradientBrush>
</Button.BorderBrush>
<Button.Background>
<ImageBrush/>
</Button.Background>
</Button>
<Button x:Name="student_btn" Content="Student" HorizontalAlignment="Left" VerticalAlignment="Top" Width="150" Margin="165,89,0,0" Height="50" FontFamily="SimSun" FontSize="22" FontWeight="Bold" FontStyle="Italic" Click="student_btn_Click">
<Button.BorderBrush>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="White" Offset="1"/>
</LinearGradientBrush>
</Button.BorderBrush>
<Button.Background>
<ImageBrush/>
</Button.Background>
</Button>
<Button x:Name="exit_btn" Content="Exit" VerticalAlignment="Top" Margin="320,89,0,0" Height="50" FontWeight="Bold" FontStyle="Italic" FontSize="22" FontFamily="SimSun" HorizontalAlignment="Left" Width="150" Click="exit_btn_Click">
<Button.BorderBrush>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="White" Offset="1"/>
</LinearGradientBrush>
</Button.BorderBrush>
<Button.Background>
<ImageBrush/>
</Button.Background>
</Button>
<Grid Name="container" Margin="10,144,0,0" Height="auto" Width="auto" VerticalAlignment="Top" HorizontalAlignment="Left" />
</Grid>
我有一个Grid控件，我必须动态添加几个TextBox。它适用于单个TextBox，但是当我添加第二个TextBox时，首先改变它的位置。并且在添加Button之后，TextBox都改变了他们的位置。这是我的代码。
TextBlock name_block = new TextBlock();
name_block.Text = "Enter your ID : ";
name_block.Margin = new Thickness(5, 8, 0, 0);
container.Children.Add(name_block);
TextBox name_box = new TextBox();
name_box.Width = 200;
name_box.Height = 25;
name_box.Margin = new Thickness(150, 5, 1, 1);
container.Children.Add(name_box);
TextBlock pass_block = new TextBlock();
pass_block.Text = "Enter your password : ";
pass_block.Margin = new Thickness(5, 78, 0, 0);
container.Children.Add(pass_block);
PasswordBox pass_box = new PasswordBox();
pass_box.Width = 200;
pass_box.Height = 25;
pass_box.Margin = new Thickness(150, 75, 0, 0);
container.Children.Add(pass_box);
Button login_btn = new Button();
login_btn.Content = "Login";
login_btn.Height = 25;
login_btn.Margin = new Thickness(150, 150, 0, 0);
container.Children.Add(login_btn);
login_btn.Click += Teacher_Login_btn_Click;
答案 0 :(得分：1)
更新的答案：
好的，您需要在文本块中添加3个元素，并在密码框中调整边距。
需要将宽度分配给文本块，但您可能会遇到默认文本块行为设置水平对齐可能是中心，因此您还需要将其设置为.Left。
然后在您的密码框中调整您的保证金，这样它就不会被推到另一条线上，您应该做得很好，因为我已经通过上述更新进行了测试以确认。
这就是为什么以下示例更容易使用，在更新背后的代码上设置边距是一个巨大的麻烦。
通过根据需要设置列和行以及可见性来改进设计器中的布局选项：
使用列和行设置网格，并使用大小调整来处理布局。然后你的边距可以在你需要的时候保持差距。
然后，您可以使用列和行放置容器网格并布置XAML并将网格设置为折叠或隐藏（根据您的需要）。然后在按钮上单击，您可以更改可见性，而不是以编程方式添加元素。
以下是经过编辑的版本:(顶部网格确实不需要分配的列，但要遵循流程）
<Grid> <!--Notice I added columns and rows to set layout instead of relaying on your margins-->
<Grid.Background>
<ImageBrush ImageSource="background.jpg" Opacity="75"/>
</Grid.Background>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="40"/>
<RowDefinition Height="25"/>
<RowDefinition Height="75"/>
<RowDefinition Height="auto"/>
</Grid.RowDefinitions>
<TextBlock x:Name="textBlock" Grid.Column="0" Grid.Row="0" HorizontalAlignment="Left" Height="52" Margin="10,10,0,0" TextWrapping="Wrap" Text="Welcome to University Portal" VerticalAlignment="Top" Width="456" FontSize="24" FontWeight="Bold" FontStyle="Italic" FontFamily="SimSun" TextAlignment="Center"/>
<TextBlock x:Name="textBlock_Copy" Grid.Column="0" Grid.Row="1" HorizontalAlignment="Left" Height="17" Margin="5,5,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="456" FontWeight="Bold" FontStyle="Italic" FontFamily="SimSun"><Run Text=" * Select your Domain."/></TextBlock>
<Button x:Name="teacher_btn" Grid.Column="0" Grid.Row="2" Content="Teacher" HorizontalAlignment="Left" VerticalAlignment="Top" Width="150" Height="50" Margin="10,9,0,0" FontFamily="SimSun" FontSize="22" FontWeight="Bold" FontStyle="Italic" Click="teacher_btn_Click">
<Button.BorderBrush>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="White" Offset="1"/>
</LinearGradientBrush>
</Button.BorderBrush>
<Button.Background>
<ImageBrush/>
</Button.Background>
</Button>
<Button x:Name="student_btn" Grid.Column="0" Grid.Row="2" Content="Student" HorizontalAlignment="Left" VerticalAlignment="Top" Width="150" Margin="165,9,0,0" Height="50" FontFamily="SimSun" FontSize="22" FontWeight="Bold" FontStyle="Italic" Click="student_btn_Click">
<Button.BorderBrush>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="White" Offset="1"/>
</LinearGradientBrush>
</Button.BorderBrush>
<Button.Background>
<ImageBrush/>
</Button.Background>
</Button>
<Button x:Name="exit_btn" Grid.Column="0" Grid.Row="2" Content="Exit" VerticalAlignment="Top" Margin="320,9,0,0" Height="50" FontWeight="Bold" FontStyle="Italic" FontSize="22" FontFamily="SimSun" HorizontalAlignment="Left" Width="150" Click="exit_btn_Click">
<Button.BorderBrush>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="White" Offset="1"/>
</LinearGradientBrush>
</Button.BorderBrush>
<Button.Background>
<ImageBrush/>
</Button.Background>
</Button>
<!--Build out the grid and set it to collapsed to give back the space or Hidden if you want to keep the space-->
<Grid Name="container" Grid.Column="0" Grid.Row="3" Height="auto" Width="auto" VerticalAlignment="Top" HorizontalAlignment="Left" Visibility="Collapsed">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="25*"/>
<ColumnDefinition Width="75*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
</Grid.RowDefinitions>
<Label x:Name="lblID" Content="Enter your ID: " Grid.Column="0" Grid.Row="0" Margin="5,25,45,4"/>
<Label x:Name="lblPW" Content="Enter your Password: " Grid.Column="0" Grid.Row="1" Margin="5,4,45,25"/>
<TextBox x:Name="txtbxUserID" Grid.Column="1" Grid.Row="0" Width="200" Height="25" Margin="25,25,25,4"/>
<PasswordBox x:Name="txtbxPW" Grid.Column="1" Grid.Row="1" Width="200" Height="25" Margin="25,4,25,25"/>
</Grid>
</Grid>