添加项目文件。

GroupLine.App/View/MsgInput.xaml

@@ -0,0 +1,38 @@
+<Window
+    x:Class="GroupLine.App.View.MsgInput"
+    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:local="clr-namespace:GroupLine.App.View"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    Title="输入信息"
+    Width="400"
+    Height="200"
+    mc:Ignorable="d">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="1*" />
+            <RowDefinition Height="2*" />
+        </Grid.RowDefinitions>
+        <StackPanel
+            Margin="10"
+            HorizontalAlignment="Center"
+            Orientation="Horizontal">
+            <Label Height="30">请输入数据</Label>
+            <TextBox
+                x:Name="Box"
+                Width="100"
+                Height="30"
+                HorizontalAlignment="Center"
+                VerticalAlignment="Center"
+                FontSize="18"
+                TextAlignment="Center" />
+        </StackPanel>
+        <Button
+            x:Name="ButtonCmd"
+            Grid.Row="1"
+            Margin="30"
+            Click="ButtonCmd_Click"
+            Content="确定" />
+    </Grid>
+</Window>