feedbacks addressed

Author: Dhileep4290

DisplayPDF_fundamental_syntax_errors/MainWindow.xaml

@@ -6,7 +6,7 @@
         xmlns:local="clr-namespace:LoadFundamentalSyntaxErrorDocument"
         xmlns:syncfusion="clr-namespace:Syncfusion.Windows.PdfViewer;assembly=Syncfusion.PdfViewer.WPF"
         mc:Ignorable="d"
-        Title="MainWindow" Height="450" Width="800">
+        Title="MainWindow" WindowState="Maximized">
     <Window.DataContext>
         <local:MainWindowViewModel />
     </Window.DataContext>
@@ -15,18 +15,14 @@
             <RowDefinition Height="Auto" />
             <RowDefinition />
         </Grid.RowDefinitions>
-        <Grid Grid.Row="0"
+        <StackPanel Grid.Row="0" Orientation="Horizontal"
            Margin="12">
-            <Grid.ColumnDefinitions>
-                <ColumnDefinition Width="70*" />
-                <ColumnDefinition Width="30*" />
-            </Grid.ColumnDefinitions>
-            <TextBlock Text="{Binding FilePath, TargetNullValue=No file selected, StringFormat={}File: {0}}" />
             <Button Content="Open"
-                 Command="{Binding OpenPDFFileCommand}"
-                 Grid.Column="1" />
-        </Grid>
-        <syncfusion:PdfDocumentView Grid.Row="1"
+                 Command="{Binding OpenPDFFileCommand}" 
+                    Width="50"
+                    Height="30"/>
+        </StackPanel>
+        <syncfusion:PdfViewerControl Grid.Row="1"
                                  Margin="12"
                                  ZoomMode="FitPage"
                                  ItemSource="{Binding PdfDocument, UpdateSourceTrigger=PropertyChanged}" />

DisplayPDF_fundamental_syntax_errors/MainWindow.xaml.cs

@@ -1,17 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Documents;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using System.Windows.Navigation;
-using System.Windows.Shapes;
+using System.Windows;
 
 namespace LoadFundamentalSyntaxErrorDocument
 {

DisplayPDF_fundamental_syntax_errors/MainWindowViewModel.cs

@@ -1,10 +1,8 @@
-using System;
-using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using Microsoft.Win32;
 using Syncfusion.Pdf.Parsing;
 using System.IO;
-using System.Xml.Linq;
 
 namespace LoadFundamentalSyntaxErrorDocument
 {
@@ -33,7 +31,8 @@ private void OpenPDFFile()
         {
             var dialog = new OpenFileDialog
             {
-                Filter = "PDF files (*.pdf)|*.pdf"
+                Filter = "PDF files (*.pdf)|*.pdf",
+                InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop),
             };
             if (dialog.ShowDialog() == true)
             {