AutoCAD Hatches and Gradient Fills

Use this skill when creating or modifying hatch patterns, solid fills, or gradient fills in drawings.

Creating a Hatch Pattern

using (Transaction tr = db.TransactionManager.StartTransaction())
{
    BlockTableRecord btr = (BlockTableRecord)tr.GetObject(
        db.CurrentSpaceId, OpenMode.ForWrite);

    Hatch hatch = new Hatch();
    hatch.SetDatabaseDefaults();
    hatch.Normal = Vector3d.ZAxis;
    hatch.Elevation = 0.0;