How do I install the Threading Wpf Dispatcher skill?

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Is Threading Wpf Dispatcher free to use?

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Who published Threading Wpf Dispatcher?

tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Threading Wpf Dispatcher by tomevault-io

Name: Threading Wpf Dispatcher
Author: tomevault-io

Threading Wpf Dispatcher

Explains WPF Dispatcher priority system and threading patterns. Use when implementing background operations, maintaining UI responsiveness, or understanding task scheduling order. Use when this capability is needed.

tomevault-io Updated Sep 17, 2026

File contents

WPF Dispatcher Threading

Priority Levels (High to Low)

Priority	Value	Use Case
Send	10	Synchronous (avoid - deadlock risk)
Normal	9	Standard operations
DataBind	8	Binding updates
Render	7	Rendering operations
Loaded	6	Loaded event handlers
Input	5	User input processing
Background	4	Background tasks (UI stays responsive)
ContextIdle	3	After context operations
ApplicationIdle	2	App idle (cache cleanup)
SystemIdle	1	System idle
Inactive	0	Disabled

Common Patterns

Background Work (UI Responsive)

await Dispatcher.InvokeAsync(() =>
{
    // This runs between input processing
    ProcessNextChunk();
}, DispatcherPriority.Background);

After Render Complete

await Dispatcher.InvokeAsync(() =>
{
    // Runs after layout/render
    ScrollIntoView(lastItem);
}, DispatcherPriority.Loaded);

Idle Cleanup

Dispatcher.InvokeAsync(() =>
{
    // Low priority cleanup
    ClearUnusedCache();
}, DispatcherPriority.ApplicationIdle);

Yielding Pattern

Keep UI responsive during long operations:

public async Task ProcessLargeDataAsync(IList<Item> items)
{
    for (int i = 0; i < items.Count; i++)
    {
        Process(items[i]);

        // Yield every 100 items to process pending input
        if (i % 100 == 0)
        {
            await Dispatcher.Yield(DispatcherPriority.Background);
            UpdateProgress(i, items.Count);
        }
    }
}

Threading Rules

// Check if on UI thread
if (!Dispatcher.CheckAccess())
{
    Dispatcher.Invoke(() => UpdateUI());
    return;
}

// From background thread
await Task.Run(() =>
{
    var result = HeavyComputation();

    // Marshal back to UI
    Dispatcher.Invoke(() => DisplayResult(result));
});

Avoid

// ❌ Send priority - can cause deadlock
Dispatcher.Invoke(() => {}, DispatcherPriority.Send);

// ❌ Blocking UI thread
Thread.Sleep(1000);

// ✅ Use async/await instead
await Task.Delay(1000);

Converted and distributed by TomeVault — claim your Tome and manage your conversions.

---name: threading-wpf-dispatcherdescription: Explains WPF Dispatcher priority system and threading patterns. Use when implementing background operations, maintaining UI responsiveness, or understanding task scheduling order. Use when this capability is needed.---# WPF Dispatcher Threading## Priority Levels (High to Low)| Priority | Value | Use Case ||----------|-------|----------|| Send | 10 | Synchronous (avoid - deadlock risk) || Normal | 9 | Standard operations || DataBind | 8 | Binding updates || Render | 7 | Rendering operations || Loaded | 6 | Loaded event handlers || Input | 5 | User input processing || Background | 4 | Background tasks (UI stays responsive) || ContextIdle | 3 | After context operations || ApplicationIdle | 2 | App idle (cache cleanup) || SystemIdle | 1 | System idle || Inactive | 0 | Disabled |## Common Patterns### Background Work (UI Responsive)```csharpawait Dispatcher.InvokeAsync(() =>{ // This runs between input processing ProcessNextChunk();}, DispatcherPriority.Background);```### After Render Complete```csharpawait Dispatcher.InvokeAsync(() =>{ // Runs after layout/render ScrollIntoView(lastItem);}, DispatcherPriority.Loaded);```### Idle Cleanup```csharpDispatcher.InvokeAsync(() =>{ // Low priority cleanup ClearUnusedCache();}, DispatcherPriority.ApplicationIdle);```## Yielding PatternKeep UI responsive during long operations:```csharppublic async Task ProcessLargeDataAsync(IList<Item> items){ for (int i = 0; i < items.Count; i++) { Process(items[i]); // Yield every 100 items to process pending input if (i % 100 == 0) { await Dispatcher.Yield(DispatcherPriority.Background); UpdateProgress(i, items.Count); } }}```## Threading Rules```csharp// Check if on UI threadif (!Dispatcher.CheckAccess()){ Dispatcher.Invoke(() => UpdateUI()); return;}// From background threadawait Task.Run(() =>{ var result = HeavyComputation(); // Marshal back to UI Dispatcher.Invoke(() => DisplayResult(result));});```## Avoid```csharp// ❌ Send priority - can cause deadlockDispatcher.Invoke(() => {}, DispatcherPriority.Send);// ❌ Blocking UI threadThread.Sleep(1000);// ✅ Use async/await insteadawait Task.Delay(1000);```---> Converted and distributed by [TomeVault](https://tomevault.io/claim/christian289) — claim your Tome and manage your conversions.

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