examples for .net 8 / 9 features

.NET 08/GetStockIcon/GetStockIconTest.sln

@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.12.35514.174 d17.12
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GetStockIconTest", "GetStockIconTest\GetStockIconTest.csproj", "{9A3E489E-90B6-4419-9B18-9A3C6BEF4D76}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{9A3E489E-90B6-4419-9B18-9A3C6BEF4D76}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9A3E489E-90B6-4419-9B18-9A3C6BEF4D76}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9A3E489E-90B6-4419-9B18-9A3C6BEF4D76}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9A3E489E-90B6-4419-9B18-9A3C6BEF4D76}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

.NET 08/GetStockIcon/GetStockIconTest/Form1.cs

@@ -0,0 +1,97 @@
+using System.Linq;
+
+namespace GetStockIconTest;
+
+public partial class Form1 : Form
+{
+    readonly Bitmap connImg;
+    readonly Bitmap disconnImg;
+
+    public Form1()
+    {
+        InitializeComponent();
+
+        connImg = SystemIcons.GetStockIcon(StockIconId.DriveNet, 128).ToBitmap();
+        disconnImg = SystemIcons.GetStockIcon(StockIconId.DriveNetDisabled, 128).ToBitmap();
+    }
+
+    private void Form1_FormClosed(object sender, FormClosedEventArgs e)
+    {
+        connImg.Dispose();
+        disconnImg.Dispose();
+    }
+
+    private void Form1_Load(object sender, EventArgs e)
+    {
+        lboxSaveIcons.SelectedIndex = 0;
+
+        // Populate image list with default size, which should be 32 px
+        imageList1.Images.Add("Conn", SystemIcons.GetStockIcon(StockIconId.DriveNet));
+        imageList1.Images.Add("Disconn", SystemIcons.GetStockIcon(StockIconId.DriveNetDisabled));
+
+        button1.ImageKey = "Conn";
+        pictureBox1.Image = connImg;
+
+        // Populate another image list with 64 px size
+        foreach (StockIconId icon in Enum.GetValues(typeof(StockIconId)))
+            imageList2.Images.Add(icon.ToString(), SystemIcons.GetStockIcon(icon, 64));
+
+        // Then use the icons in the second list to populate the toolbar
+        // and generate a bunch of pictures with the icon at the larger size
+        foreach (var imageKey in imageList2.Images.Keys)
+        {
+            var btn = new ToolStripButton(imageList2.Images[imageKey]);
+            btn.Click += (s, e) => MessageBox.Show($"Stock Icon: {imageKey}");
+            btn.Image = imageList2.Images[imageKey];
+            btn.ToolTipText = imageKey;
+            toolStrip1.Items.Add(btn);
+
+            var pb = new PictureBox
+            {
+                Width = 64, Height = 64,
+                Image = imageList2.Images[imageKey]
+            };
+            toolTip1.SetToolTip(pb, imageKey);
+            flowLayoutPanel1.Controls.Add(pb);
+        }
+    }
+
+    private void button1_Click(object sender, EventArgs e)
+    {
+        // Toggle between two icons
+        if (button1.ImageKey == "Conn")
+        {
+            button1.ImageKey = "Disconn";
+            button1.Text = "Disconnected";
+            pictureBox1.Image = disconnImg;
+        }
+        else
+        {
+            button1.ImageKey = "Conn";
+            button1.Text = "Connected";
+            pictureBox1.Image = connImg;
+        }
+    }
+
+    private void btnSaveIcons_Click(object sender, EventArgs e)
+    {
+        // Save all icons in .ico format (which looks ugly)
+        // and in .bmp format (which looks great) 
+        var result = folderBrowserDialog1.ShowDialog();
+        if (result == DialogResult.OK)
+        {
+            var savePath = folderBrowserDialog1.SelectedPath;
+            foreach (StockIconId icon in Enum.GetValues(typeof(StockIconId)))
+            {
+                var stockIcon = SystemIcons.GetStockIcon(icon, Convert.ToInt32(lboxSaveIcons.SelectedItem));
+
+                // Save .bmp file
+                stockIcon.ToBitmap().Save(Path.Combine(savePath, $"{icon}.bmp"));
+
+                // Save .ico file
+                using FileStream fs = new(Path.Combine(savePath, $"{icon}.ico"), FileMode.Create);
+                stockIcon.Save(fs);
+            }
+        }
+    }
+}