add wildcards

Author: DerekGooding

SimpleDataGrid.Example/App.xaml.cs

@@ -1,13 +1,9 @@
-using System.Configuration;
-using System.Data;
-using System.Windows;
+using System.Windows;
 
 namespace SimpleDataGrid.Example;
 
 /// <summary>
 /// Interaction logic for App.xaml
 /// </summary>
-public partial class App : Application
-{
-}
+public partial class App : Application;
 

SimpleDataGrid.Example/MainViewModel.cs

@@ -1,6 +1,4 @@
-
 using SimpleDataGrid.Pagination;
-using System.Collections.Generic;
 
 namespace SimpleDataGrid.Example;
 
@@ -14,10 +12,10 @@ public MainViewModel()
         People.SetSource(GetPeople());
     }
 
-    private List<Person> GetPeople()
+    private static List<Person> GetPeople()
     {
         var people = new List<Person>();
-        for (int i = 1; i <= 100; i++)
+        for (var i = 1; i <= 100; i++)
         {
             people.Add(new Person { Id = i, Name = $"Person {i}", Age = 20 + (i % 50) });
         }

SimpleDataGrid.Example/MainWindow.xaml

@@ -1,3 +1,4 @@
+
 <Window x:Class="SimpleDataGrid.Example.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
@@ -19,6 +20,7 @@
         <StackPanel Grid.Row="0" Orientation="Horizontal" Margin="5">
             <TextBox x:Name="SearchTextBox" Width="200" Margin="5" />
             <Button Content="Search" Click="SearchButton_Click" Margin="5" />
+            <CheckBox x:Name="WildcardCheckBox" Content="Use Wildcards" VerticalAlignment="Center" Margin="5" />
         </StackPanel>
 
         <local:PersonPagedDataGrid x:Name="PagedDataGrid" Grid.Row="1" PagedSource="{Binding People}" AutoGenerateColumns="True" />
@@ -31,4 +33,4 @@
             <Button Content="Next" Click="NextButton_Click" Margin="5" />
         </StackPanel>
     </Grid>
-</Window>
+</Window>

SimpleDataGrid.Example/MainWindow.xaml.cs

@@ -1,34 +1,29 @@
-
 using SimpleDataGrid.Controls;
 using System.Windows;
 
-namespace SimpleDataGrid.Example
-{
-    public partial class MainWindow : Window
-    {
-        public MainWindow()
-        {
-            InitializeComponent();
-        }
+namespace SimpleDataGrid.Example;
 
-        private void PreviousButton_Click(object sender, RoutedEventArgs e)
-        {
-            var viewModel = (MainViewModel)DataContext;
-            viewModel.People.PreviousPage();
-        }
+public partial class MainWindow : Window
+{
+    public MainWindow() => InitializeComponent();
 
-        private void NextButton_Click(object sender, RoutedEventArgs e)
-        {
-            var viewModel = (MainViewModel)DataContext;
-            viewModel.People.NextPage();
-        }
+    private void PreviousButton_Click(object sender, RoutedEventArgs e)
+    {
+        var viewModel = (MainViewModel)DataContext;
+        viewModel.People.PreviousPage();
+    }
 
-        private void SearchButton_Click(object sender, RoutedEventArgs e)
-        {
-            var viewModel = (MainViewModel)DataContext;
-            viewModel.People.SetSearch(p => p.Name, SearchTextBox.Text);
-        }
+    private void NextButton_Click(object sender, RoutedEventArgs e)
+    {
+        var viewModel = (MainViewModel)DataContext;
+        viewModel.People.NextPage();
     }
 
-    public class PersonPagedDataGrid : PagedDataGrid<Person> { }
+    private void SearchButton_Click(object sender, RoutedEventArgs e)
+    {
+        var viewModel = (MainViewModel)DataContext;
+        viewModel.People.SetSearch(p => p.Name, SearchTextBox.Text, WildcardCheckBox.IsChecked == true);
+    }
 }
+
+public class PersonPagedDataGrid : PagedDataGrid<Person>;

SimpleDataGrid/GlobalUsings.cs

@@ -1,5 +1,5 @@
-
 using System.ComponentModel;
+using System.Text.RegularExpressions;
 
 namespace SimpleDataGrid.Pagination;
 
@@ -17,6 +17,7 @@ public class PagedCollection<T> : INotifyPropertyChanged
     private readonly List<Func<T, bool>> _filters = [];
     private Func<T, string>? _searchSelector;
     private string? _searchTerm;
+    private bool _useWildcards;
 
     /// <summary>
     /// Initializes a new instance of the <see cref="PagedCollection{T}"/> class.
@@ -62,10 +63,12 @@ public void ClearFilters()
     /// </summary>
     /// <param name="selector">A function that returns the string representation of the object to search.</param>
     /// <param name="term">The search term.</param>
-    public void SetSearch(Func<T, string> selector, string? term)
+    /// <param name="useWildcards">A value indicating whether to use wildcards in the search term.</param>
+    public void SetSearch(Func<T, string> selector, string? term, bool useWildcards = false)
     {
         _searchSelector = selector;
         _searchTerm = term;
+        _useWildcards = useWildcards;
         ApplyFiltering();
     }
 
@@ -80,16 +83,27 @@ private void ApplyFiltering()
 
         if (!string.IsNullOrWhiteSpace(_searchTerm) && _searchSelector != null)
         {
-            query = query.Where(x =>
-                _searchSelector(x)
-                    ?.Contains(_searchTerm, StringComparison.OrdinalIgnoreCase) == true);
+            if (_useWildcards)
+            {
+                var regex = new Regex(WildcardToRegex(_searchTerm), RegexOptions.IgnoreCase);
+                query = query.Where(x => regex.IsMatch(_searchSelector(x)));
+            }
+            else
+            {
+                query = query.Where(x =>
+                    _searchSelector(x)
+                        ?.Contains(_searchTerm, StringComparison.OrdinalIgnoreCase) == true);
+            }
         }
 
         _filtered = [.. query];
         _currentPage = 0;
         RaiseAllChanged();
     }
 
+    private static string WildcardToRegex(string pattern)
+        => "^" + Regex.Escape(pattern).Replace(@"\*", ".*").Replace(@"\?", ".") + "$";
+
     /// <summary>
     /// Gets the items on the current page.
     /// </summary>
@@ -161,4 +175,4 @@ private void RaiseAllChanged()
     public event PropertyChangedEventHandler? PropertyChanged;
     private void OnPropertyChanged(string name) =>
         PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
-}
+}