Creating a custom feature line style

[Grv.Kmr]

I am looking at reference documents and don't see any methods that would help me create a custom feature line style. Is this possible? 

I am new to this and I am trying to achieve this in Dynamo environment. Any direction or reference would be really helpful. 

[hosneyalaa]

hi

try

CivilDocument doc = CivilApplication.ActiveDocument;
var stylefurid = CivilApplication.ActiveDocument.Styles.FeatureLineStyles.Add("MyFeatureLineStyle");