How to Create and Manage Scheduled Tasks in C# WPF Applications?

Scheduling Tasks in C# WPF Applications

C# WPF applications often require scheduled tasks for automated operations. This guide demonstrates how to create and manage these tasks using the Task Scheduler Managed Wrapper.

Setting Up Your Project

First, ensure your project includes the necessary references and using directives:

<code class="language-csharp">using System;
using Microsoft.Win32.TaskScheduler;</code>

Creating a Scheduled Task: A Step-by-Step Guide

1. Access the Task Service: Obtain a reference to the local machine's Task Service:

<code class="language-csharp">using (TaskService taskService = new TaskService())</code>

2. Define the Task: Create a new task definition:

<code class="language-csharp">TaskDefinition taskDefinition = taskService.NewTask();</code>

3. Configure Task Properties: Set properties like the description:

<code class="language-csharp">taskDefinition.RegistrationInfo.Description = "Automated Task";</code>

4. Set the Trigger: Define when the task should run. For example, a daily trigger:

<code class="language-csharp">taskDefinition.Triggers.Add(new DailyTrigger { DaysInterval = 2 }); // Runs every 2 days</code>

5. Specify the Action: Determine the task's action upon triggering. This example launches Notepad:

<code class="language-csharp">taskDefinition.Actions.Add(new ExecAction("notepad.exe", "c:\test.log", null));</code>

6. Register the Task: Register the task in the root folder:

<code class="language-csharp">taskService.RootFolder.RegisterTaskDefinition("MyScheduledTask", taskDefinition);</code>

7. (Optional) Task Removal: Delete the task after creation (for testing purposes):

<code class="language-csharp">taskService.RootFolder.DeleteTask("MyScheduledTask");</code>

Alternative Approaches

While the Task Scheduler Managed Wrapper is convenient, other options exist, including the native Windows API and the Quartz.NET library. Further details on these alternatives can be found in the linked resources (if provided in the original code example).

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