BuildingCoder.CmdProjectParameterGuids.AddProjectParameterBinding C# (CSharp) Method

        static bool AddProjectParameterBinding(
            Document doc,
            ProjectParameterData projectParameterData,
            Category category)
        {
            // Following good SOA practices, first validate incoming parameters

              if( doc == null )
              {
            throw new ArgumentNullException( "doc" );
              }

              if( doc.IsFamilyDocument )
              {
            throw new Exception(
              "doc can not be a family document." );
              }

              if( projectParameterData == null )
              {
            throw new ArgumentNullException(
              "projectParameterData" );
              }

              if( category == null )
              {
            throw new ArgumentNullException( "category" );
              }

              bool result = false;

              CategorySet cats = projectParameterData.Binding
            .Categories;

              if( cats.Contains( category ) )
              {
            // It's already bound to the desired category.
            // Nothing to do.
            string errorMessage = string.Format(
              "The project parameter '{0}' is already bound to the '{1}' category.",
              projectParameterData.Definition.Name,
              category.Name );

            throw new Exception( errorMessage );
              }

              cats.Insert( category );

              // See if the parameter is an instance or type parameter.

              InstanceBinding instanceBinding
            = projectParameterData.Binding as InstanceBinding;

              if( instanceBinding != null )
              {
            // Is an Instance parameter

            InstanceBinding newInstanceBinding
              = doc.Application.Create
            .NewInstanceBinding( cats );

            if( doc.ParameterBindings.ReInsert(
              projectParameterData.Definition,
              newInstanceBinding ) )
            {
              result = true;
            }
              }
              else
              {
            // Is a type parameter
            TypeBinding typeBinding
              = doc.Application.Create
            .NewTypeBinding( cats );

            if( doc.ParameterBindings.ReInsert(
              projectParameterData.Definition, typeBinding ) )
            {
              result = true;
            }
              }
              return result;
        }