C# 如何在网格中放置 XAML 用户控件
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How to place an XAML usercontrol in a grid
提问by Luis Valencia
I have the following main.xaml and usercontrol.
我有以下 main.xaml 和 usercontrol。
I need to place several times the user control on the 2nd row, 2nd column of the grid, By using visual studio it wont allow to drag and drop the user control, so I suppose I have to do it by code, I just dont know how
我需要在网格的第 2 行第 2 列上多次放置用户控件，通过使用 Visual Studio，它不允许拖放用户控件，所以我想我必须通过代码来完成，我只是不知道如何
MainPage.xaml
主页.xaml
<Grid HorizontalAlignment="Left" Height="768" VerticalAlignment="Top" Width="1366" x:Name="grid" Background="Black">
<Grid.RowDefinitions>
<RowDefinition Height="150"/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Width="250"/>
</Grid.ColumnDefinitions>
<Border BorderBrush="White" BorderThickness="3" Grid.Column="1" Background="Red" CornerRadius="30"/>
<TextBlock x:Name="txtCountry" Grid.Column="1" TextWrapping="Wrap" FontSize="36" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<TextBlock x:Name="txtTime" Grid.Row="1" TextWrapping="Wrap" FontSize="180" HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid>
Usercontrol
用户控件
<UserControl
x:Class="AlarmPro.TimeOnCity"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:AlarmPro"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="150"
d:DesignWidth="250">
<Grid Background="Black">
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition/>
</Grid.RowDefinitions>
<Border BorderBrush="#FFDE6A6A" BorderThickness="1" Grid.Row="0" Grid.Column="0" Background="#FFDC4646">
<TextBlock TextWrapping="Wrap" Text="TextBlock" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="16"/>
</Border>
<Border BorderBrush="Black" BorderThickness="1" Grid.Row="1" Background="#FFAE4F00">
<TextBlock TextWrapping="Wrap" Text="TextBlock" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="36"/>
</Border>
</Grid>
</UserControl>
采纳答案by Tom Studee
Do you mean like this?
你的意思是这样吗？
<my:UserControlName Grid.Column="2" Grid.Row="2" ... />
<my:in this case is the alias for the CLR namespace the UserControlresides in. It is defined at the top of your XAML, inside the <Window>or <UserControl>tag depending on context.
<my:在这种情况下，是UserControl所在的 CLR 命名空间的别名。它定义在 XAML 的顶部，在<Window>或<UserControl>标记内，具体取决于上下文。
For example,
例如，
<Window ...
xmlns:my="clr-namespace:AssemblyName"
...
/>
回答by user2652194
MainPage.Xaml
主页.Xaml
<Page
x:Class="UserControlExample.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:UserControlExample"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid x:Name="MainContent" Background="Azure" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<ScrollViewer Grid.Row="1" HorizontalScrollBarVisibility="Hidden"
VerticalScrollBarVisibility="Hidden">
<local:UserControl1 x:Name="MyHelloWorldUserControl" Grid.Row="1" />
</ScrollViewer>
</Grid>
</Page>
UserControl1.xaml
用户控件1.xaml
<UserControl
x:Class="UserControlExample.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:UserControlExample"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="300"
d:DesignWidth="400">
<Grid Background="Bisque">
<StackPanel>
<StackPanel Orientation="Horizontal" Height="81">
<TextBlock Text="Your Name is" Foreground="Blue" FontSize="30" Margin="0,0,0,10"/>
<TextBox x:Name="Input" Background="White" Width="225" />
</StackPanel>
<Button Content="Click Me" Foreground="Brown" FontSize="30" Click="Button_Click"/>
<TextBlock x:Name="Output" FontSize="100"/>
</StackPanel>
</Grid>
</UserControl>
回答by Ganesh
MainPage.xaml, I am binding a login UserControl by using the namespace: xmlns:UC="clr-namespace:Test.Views" , since I have my usercontrol in Folder named "Views".
MainPage.xaml，我正在使用命名空间绑定登录 UserControl ： xmlns:UC="clr-namespace:Test.Views" ，因为我在名为“ Views”的文件夹中有我的用户控件。
<ScrollViewer>
<UC:Login BtnLoginClick="Login_BtnLoginClick"/>
</ScrollViewer>
Login.cs
登录.cs
public partial class Login : UserControl {
public event EventHandler BtnLoginClick;
public Login()
{
InitializeComponent();
}
private void btnLogin_Click(object sender, RoutedEventArgs e)
{
string userName = txtUserName.Text;
string userPassword = txtUserPassword.Password.Trim();
if (userName != null && userName != string.Empty && userPassword != null && userPassword != string.Empty)
{
if (this.BtnLoginClick != null)
{
this.BtnLoginClick(this, e);
}
}
else
{
MessageBox.Show("Invalid username or password");
}
}
}
}
Finally, dont forgot to use the event handler in MainPage.xaml to capture the button clicked event from Login Usercontrol to do other actions.
最后，不要忘记使用 MainPage.xaml 中的事件处理程序从 Login Usercontrol 捕获按钮单击事件以执行其他操作。
MainPage.xaml
主页.xaml
<UC:Login BtnLoginClick="Login_BtnLoginClick"/>
Here "BtnLoginClick" its an event Handler defined in the Login.xaml[User Control].
这里的“BtnLoginClick”是在 Login.xaml[User Control] 中定义的事件处理程序。
Create new event for this "BtnLoginClick" event as i created "Login_BtnLoginClick".
为这个“BtnLoginClick”事件创建新事件，就像我创建“Login_BtnLoginClick”一样。
MainPage.cs
主页.cs
private void Login_BtnLoginClick(object sender, EventArgs e)
{
Messagebox.Show("Event captured successfully");
////Here you can add your stuffs...
}
