How to access the MSBuild 's properties list when coding a custom task?

Question

I need to write a custom task that print all the defined properties (the non-reserved ones). So in my C# code, I wanna access to the properties list of MSBuild engine and I don't know how. Please help.

Answer 1

Using .NET 4 :

using Microsoft.Build.Evaluation;
using Microsoft.Build.Utilities;

namespace MSBuildTasks
{
  public class GetAllProperties : Task
  {
    public override bool Execute()
    {
      Project project = new Project(BuildEngine.ProjectFileOfTaskNode);
      foreach (ProjectProperty evaluatedProperty in project.AllEvaluatedProperties)
      {
        if (!evaluatedProperty.IsEnvironmentProperty &&
            !evaluatedProperty.IsGlobalProperty &&
            !evaluatedProperty.IsReservedProperty)
        {
          string name = evaluatedProperty.Name;
          string value = evaluatedProperty.EvaluatedValue;
        }

        // Do your stuff
      }

      return true;
    }
  }
}