diff --git a/testWPFDevelopers.sln b/testWPFDevelopers.sln
new file mode 100644
index 0000000..9d49047
--- /dev/null
+++ b/testWPFDevelopers.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34525.116
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "testWPFDevelopers", "testWPFDevelopers\testWPFDevelopers.csproj", "{0003FC75-7BBF-4BF1-B3A6-55D2D7C792DD}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {0003FC75-7BBF-4BF1-B3A6-55D2D7C792DD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {0003FC75-7BBF-4BF1-B3A6-55D2D7C792DD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {0003FC75-7BBF-4BF1-B3A6-55D2D7C792DD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {0003FC75-7BBF-4BF1-B3A6-55D2D7C792DD}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {78A48234-9673-425C-912D-1A983319881B}
+ EndGlobalSection
+EndGlobal
diff --git a/testWPFDevelopers/App.xaml b/testWPFDevelopers/App.xaml
new file mode 100644
index 0000000..206b107
--- /dev/null
+++ b/testWPFDevelopers/App.xaml
@@ -0,0 +1,9 @@
+
+
+
+
+
diff --git a/testWPFDevelopers/App.xaml.cs b/testWPFDevelopers/App.xaml.cs
new file mode 100644
index 0000000..4368829
--- /dev/null
+++ b/testWPFDevelopers/App.xaml.cs
@@ -0,0 +1,14 @@
+using System.Configuration;
+using System.Data;
+using System.Windows;
+
+namespace testWPFDevelopers
+{
+ ///
+ /// Interaction logic for App.xaml
+ ///
+ public partial class App : Application
+ {
+ }
+
+}
diff --git a/testWPFDevelopers/AssemblyInfo.cs b/testWPFDevelopers/AssemblyInfo.cs
new file mode 100644
index 0000000..b0ec827
--- /dev/null
+++ b/testWPFDevelopers/AssemblyInfo.cs
@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+ ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+ //(used if a resource is not found in the page,
+ // or application resource dictionaries)
+ ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+ //(used if a resource is not found in the page,
+ // app, or any theme specific resource dictionaries)
+)]
diff --git a/testWPFDevelopers/MainViewModel.cs b/testWPFDevelopers/MainViewModel.cs
new file mode 100644
index 0000000..bcca541
--- /dev/null
+++ b/testWPFDevelopers/MainViewModel.cs
@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace testWPFDevelopers
+{
+ public class MainViewModel
+ {
+ private ObservableCollection myVar;
+
+ public ObservableCollection MyProperty
+ {
+ get { return myVar; }
+ set { myVar = value; }
+ }
+ public MainViewModel()
+ {
+ myVar = new ObservableCollection();
+ myVar.Add("a001");
+ myVar.Add("保001");
+ myVar.Add("保德03");
+ myVar.Add("dc04");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ myVar.Add("保德03");
+ }
+ }
+}
diff --git a/testWPFDevelopers/MainWindow.xaml b/testWPFDevelopers/MainWindow.xaml
new file mode 100644
index 0000000..e569251
--- /dev/null
+++ b/testWPFDevelopers/MainWindow.xaml
@@ -0,0 +1,22 @@
+
+
+
+
+
diff --git a/testWPFDevelopers/MainWindow.xaml.cs b/testWPFDevelopers/MainWindow.xaml.cs
new file mode 100644
index 0000000..686fda5
--- /dev/null
+++ b/testWPFDevelopers/MainWindow.xaml.cs
@@ -0,0 +1,36 @@
+using System.Text;
+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;
+
+namespace testWPFDevelopers
+{
+ ///
+ /// Interaction logic for MainWindow.xaml
+ ///
+ public partial class MainWindow : Window
+ {
+ List list = new List { "aa", "bb", "abc", "csd", "sdlfks", "osdi", "awd" , "aa", "bb", "abc", "csd", "sdlfks", "osdi", "awd", "aa", "bb", "abc", "csd", "sdlfks", "osdi", "awd" };
+ public MainWindow()
+ {
+ InitializeComponent();
+ this.DataContext=new MainViewModel();
+ comboBox1.ItemsSource = list;
+ }
+ private void comboBox1_KeyUp(object sender, KeyEventArgs e)
+ {
+
+ List mylist = new List();
+ mylist = list.FindAll(delegate (string s) { return s.Contains(comboBox1.Text.Trim()); });
+ comboBox1.ItemsSource = mylist;
+ comboBox1.IsDropDownOpen = true;
+ }
+ }
+
+}
\ No newline at end of file
diff --git a/testWPFDevelopers/testWPFDevelopers.csproj b/testWPFDevelopers/testWPFDevelopers.csproj
new file mode 100644
index 0000000..18b9a12
--- /dev/null
+++ b/testWPFDevelopers/testWPFDevelopers.csproj
@@ -0,0 +1,11 @@
+
+
+
+ WinExe
+ net6.0-windows
+ enable
+ enable
+ true
+
+
+