添加了处理中的对话框

Views/Dialogs/ProcessingDialog.xaml

@@ -0,0 +1,34 @@
+<ui:ContentDialog x:Class="PMSWPF.Views.Dialogs.ProcessingDialog"
+                  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"
+                  xmlns:ui="http://schemas.inkore.net/lib/ui/wpf/modern"
+                  xmlns:vmd="clr-namespace:PMSWPF.ViewModels.Dialogs"
+                  Title="{Binding Title}"
+                  Background="#fff"
+                  d:DataContext="{d:DesignInstance vmd:ProcessingDialogViewModel}"
+                  mc:Ignorable="d">
+    <Grid Width="360"
+          Margin="10">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+
+        <TextBlock Grid.Row="0"
+                   Margin="0,0,0,20"
+                   FontSize="14"
+                   TextWrapping="Wrap"
+                   FontWeight="Bold"
+                   Text="{Binding Message}"
+                   HorizontalAlignment="Center" />
+
+        <ui:ProgressRing Grid.Row="1"
+                      IsActive="True"
+                      Width="50"
+                      Height="50"
+                      HorizontalAlignment="Center"
+                      VerticalAlignment="Center" />
+    </Grid>
+</ui:ContentDialog>

Views/Dialogs/ProcessingDialog.xaml.cs

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+using iNKORE.UI.WPF.Modern.Controls;
+using PMSWPF.ViewModels.Dialogs;
+
+namespace PMSWPF.Views.Dialogs;
+
+public partial class ProcessingDialog : ContentDialog
+{
+    public ProcessingDialog(ProcessingDialogViewModel viewModel)
+    {
+        InitializeComponent();
+        this.DataContext = viewModel;
+    }
+}