Open-source libraries to create multifunctional and safe structure for your project
Represents UnniResult class which allows you to easy transfer validation errors and inner exceptions between methods.
Install NuGet package: Unni.Infrastructure
Or using the command line below:
dotnet add package unni.infrastructure
using Unni.Infrastructure;Divided on 2 classes - UnniResult and UnniResult<T>
UnniResult contains these properties:
| Property | Description |
|---|---|
| Success | Indicates if executed method was successful |
| Errors | Contains list of validation errors |
| InnerException | Contains thrown exception from method |
UnniResult<T> extends UnniResult and adds this property:
| Property | Description |
|---|---|
| Data | Final result of executed method with type <T> |
Let's create the simple console app with example of usage
- Create the new Console project
- Add
Unni.Infrastructurelibrary using NuGet - Add the namespace to the
Program.csfile
using Unni.Infrastructure;- Add the method which represents a service for getting the list of numbers
public static UnniResult<List<int>> FillArray(int count)
{
try
{
if (count == 0)
{
return new UnniResult<List<int>>("! Count can not be 0");
}
List<int> result = new List<int>(count);
for (int i = 1; i <= count; i++)
{
result.Add(i);
}
return new UnniResult<List<int>>(result);
}
catch(Exception ex)
{
return new UnniResult<List<int>>(ex);
}
}- Add the method for displaying errors
public static void ShowErrorResult(UnniResult result)
{
if (result.InnerException != null)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"- Oops, something went wrong!"); //Tell user about unexpected error
Console.WriteLine($"- Exception occured: {result.InnerException.Message}"); //Log exception to proceed it in the future
Console.ForegroundColor = ConsoleColor.White;
}
Console.ForegroundColor = ConsoleColor.Yellow;
foreach (var error in result.Errors)
{
Console.WriteLine(error); //Tell user about validation errors
}
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine();
}- Add the method for executing
FillArraymethod
public static void ExecuteResut(int count)
{
Console.WriteLine($"Executing method with count {count}");
var result = FillArray(count);
if (result.Success)
{
for (int i = 0; i < result.Data.Count; i++)
{
Console.WriteLine(result.Data[i]);
}
}
else
{
ShowErrorResult(result);
}
}- Change the
Mainmethod to run some tests
public static void Main()
{
//Testing validation errors
ExecuteResut(0);
//Testing inner exception
ExecuteResut(-1);
//Testing successful method execution
ExecuteResut(5);
}- Run the project and you will get this output
Executing method with count 0
! Count can not be 0
Executing method with count -1
- Oops, something went wrong!
- Exception occured: Non-negative number required. (Parameter 'capacity')
Executing method with count 5
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