Как изменить иконку windows forms

I need to change the icon in the application I am working on. But simply browsing for other icons from the project property tab -> Application -> Icon, it is not getting the icons stored on the desktop..

What is the right way of doing it?

The Icon displayed in the Taskbar and Windowtitle is that of the main Form. By changing its Icon you also set the Icon shown in the Taskbar, when already included in your *.resx:

System.ComponentModel.ComponentResourceManager resources = 
    new System.ComponentModel.ComponentResourceManager(typeof(MyForm));
this.Icon = ((System.Drawing.Icon)(resources.GetObject("statusnormal.Icon")));

or, by directly reading from your Resources:

this.Icon = new Icon("Resources/statusnormal.ico");

If you cannot immediately find the code of the Form, search your whole project (CTRL+SHIFT+F) for the shown Window-Title (presuming that the text is static)

answered Sep 11, 2013 at 8:46

answered Nov 26, 2010 at 10:41

I added the .ico file to my project, setting the Build Action to Embedded Resource. I specified the path to that file as the project’s icon in the project settings, and then I used the code below in the form’s constructor to share it. This way, I don’t need to maintain a resources file anywhere with copies of the icon. All I need to do to update it is to replace the file.

var exe = System.Reflection.Assembly.GetExecutingAssembly();
var iconStream = exe.GetManifestResourceStream("Namespace.IconName.ico");
if (iconStream != null) Icon = new Icon(iconStream);

answered Oct 6, 2017 at 15:02

Put the following line in the constructor of your Form:

Icon = Icon.ExtractAssociatedIcon(System.Reflection.Assembly.GetExecutingAssembly().Location);

answered Nov 19, 2021 at 16:10

This is the way to set the same icon to all forms without having to change one by one.
This is what I coded in my applications.

FormUtils.SetDefaultIcon();

Here a full example ready to use.

static class Program
{
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main(string[] args)
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);

        //Here it is.
        FormUtils.SetDefaultIcon();

        Application.Run(new Form());
    }
}

Here is the class FormUtils:

using System.Drawing;
using System.Windows.Forms;

public static class FormUtils
{
    public static void SetDefaultIcon()
    {
        var icon = Icon.ExtractAssociatedIcon(EntryAssemblyInfo.ExecutablePath);
        typeof(Form)
            .GetField("defaultIcon", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static)
            .SetValue(null, icon);
    }
}

And here the class EntryAssemblyInfo. This is truncated for this example. It is my custom coded class taken from System.Winforms.Application.

using System.Security;
using System.Security.Permissions;
using System.Reflection;
using System.Diagnostics;

public static class EntryAssemblyInfo
{
    private static string _executablePath;

    public static string ExecutablePath
    {
        get
        {
            if (_executablePath == null)
            {
                PermissionSet permissionSets = new PermissionSet(PermissionState.None);
                permissionSets.AddPermission(new FileIOPermission(PermissionState.Unrestricted));
                permissionSets.AddPermission(new SecurityPermission(SecurityPermissionFlag.UnmanagedCode));
                permissionSets.Assert();

                string uriString = null;
                var entryAssembly = Assembly.GetEntryAssembly();

                if (entryAssembly == null)
                    uriString = Process.GetCurrentProcess().MainModule.FileName;
                else
                    uriString = entryAssembly.CodeBase;

                PermissionSet.RevertAssert();

                if (string.IsNullOrWhiteSpace(uriString))
                    throw new Exception("Can not Get EntryAssembly or Process MainModule FileName");
                else
                {
                    var uri = new Uri(uriString);
                    if (uri.IsFile)
                        _executablePath = string.Concat(uri.LocalPath, Uri.UnescapeDataString(uri.Fragment));
                    else
                        _executablePath = uri.ToString();
                }
            }

            return _executablePath;
        }
    }
}

answered Apr 19, 2022 at 16:31

On the solution explorer, right click on the project title and select the ‘Properties’ on the context menu to open the ‘Project Property’ form. In the ‘Application’ tab, on the ‘Resources’ group box there is a entry field where you can select the icon file you want for your application.

I found that the easiest way is:

1. Add an Icon file into your WinForms project.
2. Change the icon files’ build action into Embedded Resource

3. In the Main Form Load function:

   Icon = LoadIcon(«< the file name of that icon file >»);

answered Aug 14, 2017 at 14:05

Try this, e.g. in the form constructor:

public Form1()
{
  InitializeComponent();

  string imagePath = @"" + AppDomain.CurrentDomain.BaseDirectory + "path-for-icon";
  using (var stream = File.OpenRead(imagePath))
  {
     this.Icon = new Icon(stream);
  }
}

answered Dec 15, 2021 at 17:19

I follow Csmotor answer to set icon in my project but I need one more step to convert from Icon to ImageSource.

I shared for whom concerned.

this.Icon = ExportXML.Properties.Resources.IDR_MAINFRAME.ToImageSource();

public static class Helper{
        public static ImageSource ToImageSource(this Icon icon)
        {
            ImageSource imageSource = Imaging.CreateBitmapSourceFromHIcon(
                icon.Handle,
                Int32Rect.Empty,
                BitmapSizeOptions.FromEmptyOptions());

            return imageSource;
        }
    }

answered Nov 28, 2022 at 2:53

answered Aug 26, 2019 at 13:14

Select your project properties from Project Tab
Then Application->Resource->Icon And Manifest->change the default icon

This works in Visual studio 2019 finely
Note:Only files with .ico format can be added as icon

answered Nov 1, 2019 at 4:28

select Main form -> properties -> Windows style -> icon -> browse your ico

this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));