SafeInvoker

SafeInvoker helps ensure your WPF and WinForms code interacts with UI elements safely and correctly.
It provides a Fody-powered method attribute and a clean extension API for thread-safe UI invocation.

Free to use for personal and commercial projects. This package is closed source.

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Features

• ✅ [WPF.SafeInvoke] attribute for automatic thread safety on WPF methods
• ✅ [Forms.SafeInvoke] attribute for WinForms control methods
• ✅ Extension methods for DispatcherObject.SafeInvoke(...) (WPF)
• ✅ Extension methods for Control.SafeInvoke(...) (WinForms)
• ✅ Prevents InvalidOperationException from unsafe UI thread access
• ✅ Supports nested and re-entrant dispatcher or control thread invocation

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🚀 Usage Examples

1. WPF – Auto-Safe Method Invocation via Attribute

public class MyViewModel : DispatcherObject
{
    [WPF.SafeInvoke]
    public void UpdateUI()
    {
        Console.WriteLine($"Running on UI thread: {Dispatcher.CheckAccess()}");
    }
}

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2. WPF – Manual SafeInvoke with Lambda

myWindow.SafeInvoke(w =>
{
    w.Title = "Updated safely from any thread!";
});

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3. WinForms – Auto-Safe Method Invocation via Attribute

public class MyForm : Form
{
    [Forms.SafeInvoke]
    public void UpdateLabel()
    {
        myLabel.Text = "Thread-safe update";
    }
}

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4. WinForms – Manual SafeInvoke with Lambda

myLabel.SafeInvoke(lbl =>
{
    lbl.Text = "Safe call from any thread";
});

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5. Invoke with Action Delegate (WPF or WinForms)