Polyline

[xShaider]

using Autodesk.AutoCAD.ApplicationServices; using Autodesk.AutoCAD.DatabaseServices; using Autodesk.AutoCAD.EditorInput; using Autodesk.AutoCAD.Geometry; using Autodesk.AutoCAD.Runtime;

public class Commands { [CommandMethod("Create3DPolyline")] public void Create3DPolyline() { // Get the current document and database Document doc = Application.DocumentManager.MdiActiveDocument; Database db = doc.Database;

    // Start a transaction
    using (Transaction tr = db.TransactionManager.StartTransaction())
    {
        // Open the BlockTable for read
        BlockTable bt = tr.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;

        // Open the BlockTableRecord (model space) for write
        BlockTableRecord btr = tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;

        // Prompt the user to select the first point
        PromptPointResult firstPointResult = doc.Editor.GetPoint("Select the first point: ");
        if (firstPointResult.Status != PromptStatus.OK) return;

        // Prompt the user to select the second point
        PromptPointResult secondPointResult = doc.Editor.GetPoint("Select the second point: ");
        if (secondPointResult.Status != PromptStatus.OK) return;

        // Create a 3D polyline with the selected points
        Polyline3d polyline = new Polyline3d();
        polyline.AddVertexAt(0, firstPointResult.Value.Convert3d(), 0, 0, 0);
        polyline.AddVertexAt(1, secondPointResult.Value.Convert3d(), 0, 0, 0);

        // Add the polyline to the block table record
        btr.AppendEntity(polyline);
        tr.AddNewlyCreatedDBObject(polyline, true);

        // Commit the transaction
        tr.Commit();
    }
}

}