Create MVVM Background Tasks with Progress Reporting

David Veeneman

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9 Sep 2011CPOL18 min read

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This article explains how to implement background processing and parallel processing for time consuming tasks in MVVM, and how to create a progress dialog with cancellation for those tasks.

WpfProgressDemo.zip
- WpfProgressDemo
  - _ReSharper.WpfProgressDemo
    - BuildScriptCache
      - .crc
      - .version
      - 4
        
        20bcce1c.dat
      - 5
      - 6
    - DecompilerCache
    - ModuleIds.xml
    - NamedArguments
      - .crc
      - .version
      - 2
        
        29a60d99.dat
    - PdbInfo
    - ProjectModel
      - ProjectModel.dat
    - Resources
      - .crc
      - .version
      - 3
        
        35ef083f.dat
    - SymbolCache.bin
    - TagPrefixes
      - .crc
      - .version
    - TodoCache
      - .crc
      - .version
      - 3
        
        35ef083f.dat
    - WebsiteFileReferences
      - .crc
      - .version
    - WordIndex
      - .crc
      - .version
      - 2
        
        29a60d99.dat
  - WpfProgressDemo.1.1.dotCover
  - WpfProgressDemo.5.1.ReSharper
  - WpfProgressDemo.5.1.ReSharper.user
  - WpfProgressDemo.sln
  - WpfProgressDemo
    - App.xaml
    - App.xaml.cs
    - bin
      - Debug
        
        WpfProgressDemo.exe
        
        WpfProgressDemo.vshost.exe
        
        WpfProgressDemo.vshost.exe.manifest
    - obj
      - x86
        
        Debug
        
        TempPE
        
        View
    - Operations
      - Commands
        
        CancelCommand.cs
        
        DoDemoWorkCommand.cs
      - Services
        
        ServiceOne.cs
        
        ServiceTwo.cs
    - Properties
    - View
      - MainWindow.xaml
      - MainWindow.xaml.cs
      - ProgressDialog.xaml
      - ProgressDialog.xaml.cs
      - Services
        
        ViewServices.cs
    - ViewModel
    - WpfProgressDemo.csproj

<Window x:Class="WpfProgressDemo.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="WPF Progress Demo" 
        Height="200" Width="350" 
        DataContextChanged="OnDataContextChanged" WindowStartupLocation="CenterScreen" ResizeMode="NoResize">
    <Grid>
        <Button Content="Do Demo Work" Command="{Binding DoDemoWork}" Width="125" Height="23" HorizontalAlignment="Center" />
    </Grid>
</Window>

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

David Veeneman

Software Developer (Senior) Foresight Systems

United States

David Veeneman is a financial planner and software developer. He is the author of "The Fortune in Your Future" (McGraw-Hill 1998). His company, Foresight Systems, develops planning and financial software.

Create MVVM Background Tasks with Progress Reporting

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