BionicUtilities.Net 1.4.1

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Additional Details

Breaking change: the library has been moved to a new package and namespace: "BionicCode.Utilities.Net.Framework.Wpf" (and the dependency to "BionicCode.Utilities.Net.Standard"). Please install the "BionicCode.Utilities.Net.Framework.Wpf" package from now on. Remarks: only the namespaces have changed. Class names remain the same (except the class 'BaseViewModel` has been renamed to 'ViewModel' and 'IBaseViewModel' to 'IViewModel'. The 'BaseViewModel' class and the 'IBaseViewModel' interface are still available for backward compatibility, but have been marked as deprecated). For the .NET Core version please install the new "BionicCode.Utilities.Net.Core.Wpf" package.

dotnet add package BionicUtilities.Net --version 1.4.1                
NuGet\Install-Package BionicUtilities.Net -Version 1.4.1                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="BionicUtilities.Net" Version="1.4.1" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add BionicUtilities.Net --version 1.4.1                
#r "nuget: BionicUtilities.Net, 1.4.1"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install BionicUtilities.Net as a Cake Addin
#addin nuget:?package=BionicUtilities.Net&version=1.4.1

// Install BionicUtilities.Net as a Cake Tool
#tool nuget:?package=BionicUtilities.Net&version=1.4.1                


Reusable utility and class library for WPF.

NuGet package

Class Reference


Contains (snippet - full read me here)

(Click class link to load example)


  • Implements and encapsulates INotifyPropertyChanged and INotifyDataErrorInfo.
  • Allows to control whether invalid data is set on a property or neglected until validation passes by setting the default parameter isRejectInvalidValueEnabled of TrySetValue() to true (neglects invalid values by default).
  • Also allows to control whether to throw an exception on validation error or not (silent) by setting the default parameter isThrowExceptionOnValidationErrorEnabled of TrySetValue() to true (is silent by default).
  • Additionally exposes a PropertyValueChanged event which is raised in tandem with INotifyPropertyChanged.PropertyChanged but additionally carries old value and new value as event args.
Example with validation
private string name;
public string Name
  get =>;
    if (TrySetValue(
      (stringValue) =>
        var messages = new List<string>() {"Name must start with an underscore"};
        return (stringValue.StartsWith("_"), messages);
Example without validation
private string name;
public string Name
  get =>;
    if (TrySetValue(value, ref


Reusable generic command class that encapsulates ICommand and allows asynchronous execution. When used with a Binding the command will execute asynchronously when an awaitable execute handler is assigned to the command.

// ICommand property
public IAsyncRelayCommand<string> StringAsyncCommand => new AsyncRelayCommand<string>(ProcessStringAsync);
// Execute asynchronously
await StringAsyncCommand.ExecuteAsync("String value");
// Execute synchronously
StringAsyncCommand.Execute("String value");


Static helper methods to measure performance e.g. the execution time of a code portion.

// Specify a custom output
Profiler.LogPrinter = (timeSpan) => PrintToFile(timeSpan);
// Measure the average execution time of a specified number of iterations.
TimeSpan elapsedTime = Profiler.LogAverageTime(() => ReadFromDatabase(), 1000);
// Measure the execution times of a specified number of iterations.
List<TimeSpan> elapsedTime = Profiler.LogTimes(() => ReadFromDatabase(), 1000);
// Measure the execution time.
TimeSpan elapsedTime = Profiler.LogTime(() => ReadFromDatabase());


Generic EventArgs implementation that provides value change information like OldValue and NewValue.

// Specify a named ValueTuple as event argument
event EventHandler<ValueChangedEventArgs<(bool HasError, string Message)>> Completed;    
protected virtual void RaiseCompleted((bool HasError, string Message) oldValue, (bool HasError, string Message) newValue)
  this.Completed?.Invoke(this, new ValueChangedEventArgs<(bool HasError, string Message)>(oldValue, newValue));

private void OnCompleted(object sender, ValueChangedEventArgs<(bool HasError, string Message)> e)
  (bool HasError, string Message) newValue = e.NewValue;
  if (newValue.HasError)
    this.TaskCompletionSource.TrySetException(new InvalidOperationException(newValue.Message));


A static default API to the AppSettings that provides strongly typed reading and writing (e.g. boo, int, double, string) of key-value pair values.

// Write the Most Recently Used file count to the AppSettings file
AppSettingsConnector.WriteInt("mruCount", 10);

// If key exists read the Most Recently Used file count from the AppSettings file
if (TryReadInt("mruCount", out int mruCount))
  this.MruCount = mruCount;

GitHub (full read me here)

Product Compatible and additional computed target framework versions.
.NET Framework net48 is compatible.  net481 was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.4.1 1,292 12/4/2019
1.2.1 1,166 10/18/2019
1.2.0 1,134 10/13/2019
1.1.13 1,143 10/12/2019
1.1.12 1,176 10/3/2019
1.1.11 1,207 10/3/2019
1.1.10 1,145 10/3/2019
1.1.9 1,178 10/3/2019
1.1.8 1,171 10/3/2019
1.1.7 1,152 10/3/2019
1.1.6 1,138 10/3/2019
1.1.5 1,203 10/1/2019
1.1.4 1,181 10/1/2019
1.1.0 1,162 9/29/2019

- Fixed AsyncRelayCommand when using no param overload of CanExecute()
   - Added dynamic multitype EventAggregator
   - Added PropertyValueChanged event to BaseViewModel
   - Added MVVM conform display dialog infrastructure
   For bug reports or feature requests please visit the project home on GutHub (follow the "Project Site" link on the right) and then open an issue (open the "issue" tab, click "New Issue" and select the appropriate template) or send  a mail to Thank you very much.