سؤال هام : كيف اتصل بملف كاد عن طريق السي شارب واعمل تعديلات فيه على اساس انه في شكل قاعدة بيانات واغير الوان مثلا فيه

using Autodesk.AutoCAD.ApplicationServices;

using Autodesk.AutoCAD.EditorInput;

using Autodesk.AutoCAD.Runtime;

using Autodesk.AutoCAD.Interop;

using System.Runtime.InteropServices;

namespace RedefineOpen

{

public class CommandRedefinitions

: Autodesk.AutoCAD.Runtime.IExtensionApplication

{

public void Initialize()

{

AcadApplication app =

(AcadApplication)Application.AcadApplication;

app.ActiveDocument.SendCommand("_.UNDEFINE _OPEN ");

}

public void Terminate(){}

[CommandMethod("OPEN", CommandFlags.Session)]

static public void Open()

{

DocumentCollection dm = Application.DocumentManager;

Editor ed = dm.MdiActiveDocument.Editor;

PromptOpenFileOptions opts =

new PromptOpenFileOptions(

"Select a drawing file (for a custom command)"

);

opts.Filter = "Drawing (*.dwg)";

PromptFileNameResult pr = ed.GetFileNameForOpen(opts);

if (pr.Status == PromptStatus.OK)

{

dm.Open(pr.StringResult);

}

}

}

}