我正在使用 Material Design In XAML Toolkit C#，以及 WPF C# 中的 Material Design MessageBox。
我需要一个类似或更好的 MessageBox 设计。
我尝试使用 DialogHost，但出现以下错误：
No loaded DialogHost instances.
private async void MenuPopupButton_OnClick(object sender, RoutedEventArgs e) {
var sampleMessageDialog = new SampleMessageDialog {
Message = {Text = "Goodbye"}
};
await DialogHost.Show(sampleMessageDialog, "RootDialog");
}
没有加载的DialogHost实例。
我在我的应用程序中开发了一个自定义消息框（使用Material Design控件）。以下是WPF XAML和C＃的代码。
它包含以下三种类型的消息框：
从下面的链接下载代码。
https://github.com/sandeepjadhav75502/CustomMessageBoxWPF
WPF XAML代码:
<Window x:Class="EVotingDashBoard.MessageBoxCustom"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Title="MessageBoxWindow" Height="220" Width="500"
WindowStartupLocation="CenterScreen" WindowStyle="None" Background="White"
ResizeMode="CanResize" Topmost="True" ShowInTaskbar="False"
xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
TextElement.Foreground="{DynamicResource MaterialDesignBody}"
TextElement.FontWeight="Regular"
TextElement.FontSize="10"
TextOptions.TextFormattingMode="Ideal"
TextOptions.TextRenderingMode="Auto"
FontFamily="{DynamicResource MaterialDesignFont}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="197*"/>
<ColumnDefinition Width="295*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<materialDesign:Card x:Name="cardHeader" Grid.Row="0" Padding="10" Margin="0" materialDesign:ShadowAssist.ShadowDepth="Depth5" Background="{DynamicResource PrimaryHueDarkBrush}" Foreground="{DynamicResource PrimaryHueDarkForegroundBrush}" Visibility="Visible" Grid.ColumnSpan="2">
<StackPanel>
<TextBlock x:Name="txtTitle" HorizontalAlignment="Center" VerticalAlignment="Stretch" Style="{DynamicResource MaterialDesignTitleTextBlock}" FontSize="20" >Message Title</TextBlock>
</StackPanel>
</materialDesign:Card>
<StackPanel HorizontalAlignment="Right" Margin="0,5,5,0" VerticalAlignment="Top" Grid.Column="1">
<Button x:Name="btnClose" Click="btnClose_Click" Width="35" Height="35" Background="White" Foreground="{DynamicResource PrimaryHueDarkBrush}" Style="{StaticResource MaterialDesignFloatingActionDarkButton}">
<materialDesign:PackIcon Kind="Close" />
</Button>
</StackPanel>
<Grid Grid.Row="1" Grid.ColumnSpan="2">
<Grid Margin="20">
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<materialDesign:TransitioningContent>
<materialDesign:TransitioningContent.OpeningEffects >
<materialDesign:TransitionEffect Kind="FadeIn" />
<materialDesign:TransitionEffect Kind="SlideInFromBottom" />
</materialDesign:TransitioningContent.OpeningEffects>
<TextBox x:Name="txtMessage" HorizontalAlignment="Center" IsReadOnly="True" Grid.Row="0" Margin="5" materialDesign:HintAssist.Hint="" FontSize="18" Style="{StaticResource MaterialDesignFloatingHintTextBox}" />
</materialDesign:TransitioningContent>
</Grid>
<Grid Grid.Row="1" Margin="0,20,0,5">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="auto"/>
<ColumnDefinition Width="auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Button x:Name="btnOk" Click="btnOk_Click" Grid.Column="1" Style="{StaticResource MaterialDesignRaisedButton}" Margin="5" Width="100" Content="OK" ToolTip="Ok"/>
<Button x:Name="btnCancel" Click="btnCancel_Click" Grid.Column="2" Style="{StaticResource MaterialDesignRaisedButton}" Margin="5" Width="100" Content="Cancel" ToolTip="Cancel"/>
<Button x:Name="btnYes" Click="btnYes_Click" Grid.Column="1" Style="{StaticResource MaterialDesignRaisedButton}" Margin="5" Width="100" Content="Yes" ToolTip="Yes"/>
<Button x:Name="btnNo" Click="btnNo_Click" Grid.Column="2" Style="{StaticResource MaterialDesignRaisedButton}" Margin="5" Width="100" Content="No" ToolTip="No"/>
</Grid>
</Grid>
</Grid>
</Grid>
</Window>
C#代码后台
/// <summary>
/// Interaction logic for MessageBoxCustom.xaml
/// </summary>
public partial class MessageBoxCustom : Window
{
public MessageBoxCustom(string Message, MessageType Type, MessageButtons Buttons)
{
InitializeComponent();
txtMessage.Text = Message;
switch (Type)
{
case MessageType.Info:
txtTitle.Text = "Info";
break;
case MessageType.Confirmation:
txtTitle.Text = "Confirmation";
break;
case MessageType.Success:
{
txtTitle.Text = "Success";
}
break;
case MessageType.Warning:
txtTitle.Text = "Warning";
break;
case MessageType.Error:
{
txtTitle.Text = "Error";
}
break;
}
switch (Buttons)
{
case MessageButtons.OkCancel:
btnYes.Visibility = Visibility.Collapsed; btnNo.Visibility = Visibility.Collapsed;
break;
case MessageButtons.YesNo:
btnOk.Visibility = Visibility.Collapsed; btnCancel.Visibility = Visibility.Collapsed;
break;
case MessageButtons.Ok:
btnOk.Visibility = Visibility.Visible;
btnCancel.Visibility = Visibility.Collapsed;
btnYes.Visibility = Visibility.Collapsed; btnNo.Visibility = Visibility.Collapsed;
break;
}
}
private void btnYes_Click(object sender, RoutedEventArgs e)
{
this.DialogResult = true;
this.Close();
}
private void btnCancel_Click(object sender, RoutedEventArgs e)
{
this.DialogResult = false;
this.Close();
}
private void btnOk_Click(object sender, RoutedEventArgs e)
{
this.DialogResult = true;
this.Close();
}
private void btnNo_Click(object sender, RoutedEventArgs e)
{
this.DialogResult = false;
this.Close();
}
private void btnClose_Click(object sender, RoutedEventArgs e)
{
this.DialogResult = false;
this.Close();
}
}
public enum MessageType
{
Info,
Confirmation,
Success,
Warning,
Error,
}
public enum MessageButtons
{
OkCancel,
YesNo,
Ok,
}
我们可以这样调用它
private void Button_Close(object sender, RoutedEventArgs e)
{
bool? Result = new MessageBoxCustom("Are you sure, You want to close
application ?", MessageType.Confirmation, MessageButtons.YesNo).ShowDialog();
if (Result.Value)
{
Application.Current.Shutdown();
}
}
