Microsoft.VisualStudio.Project.ProjectConfig.SetPropertyUnderCondition C# (CSharp) Method

        private void SetPropertyUnderCondition(string propertyName, string propertyValue, string condition)
        {
            string conditionTrimmed = (condition == null) ? String.Empty : condition.Trim();

            if (conditionTrimmed.Length == 0)
            {
                this.project.BuildProject.SetProperty(propertyName, propertyValue);
                return;
            }

            // New OM doesn't have a convenient equivalent for setting a property with a particular property group condition.
            // So do it ourselves.
            MSBuildConstruction.ProjectPropertyGroupElement newGroup = null;

            foreach (MSBuildConstruction.ProjectPropertyGroupElement group in this.project.BuildProject.Xml.PropertyGroups)
            {
                if (String.Equals(group.Condition.Trim(), conditionTrimmed, StringComparison.OrdinalIgnoreCase))
                {
                    newGroup = group;
                    break;
                }
            }

            if (newGroup == null)
            {
                newGroup = this.project.BuildProject.Xml.AddPropertyGroup(); // Adds after last existing PG, else at start of project
                newGroup.Condition = condition;
            }

            foreach (MSBuildConstruction.ProjectPropertyElement property in newGroup.PropertiesReversed) // If there's dupes, pick the last one so we win
            {
                if (String.Equals(property.Name, propertyName, StringComparison.OrdinalIgnoreCase) && property.Condition.Length == 0)
                {
                    property.Value = propertyValue;
                    return;
                }
            }

            newGroup.AddProperty(propertyName, propertyValue);
        }