Topic: User Input - Getpoint Method - rubber band line

[Oak3s]

I am trying to rewrite the C# code for the GetPoint Method found in AutoCAD .NET Developers Guide/Prompt for User Input.

I rewriting it in hopes of better understanding it...which I think it working But I am stuck on the rubber portion. I can pick the two points and draw the line...but once I pick the first point I want the rubber band line...not getting it.

Code: [Select]

[CommandMethod("UserPoint")]
        public static void UserPoint()
        {
            Document acDoc = Application.DocumentManager.MdiActiveDocument;
            Database acCurDb = acDoc.Database;
            PromptPointOptions usrPointOpts = new PromptPointOptions("Enter the start point of the line: ");    //prompt for point
            PromptPointResult usrPointRes = acDoc.Editor.GetPoint(usrPointOpts);                                //get user point
            Point3d usrStart = usrPointRes.Value;                                                               //store user value

            PromptPointOptions usrEndPointOpts = new PromptPointOptions("\nEnter the end point of the line: ");   //prompt for point

           [color=red] //set a rubber band line **************NOT WORKING********************[/color]
            usrPointOpts.UseBasePoint = true;
            usrPointOpts.BasePoint = usrStart;

            PromptPointResult usrEndPointRes = acDoc.Editor.GetPoint(usrEndPointOpts);                          //get user point
            Point3d usrEnd = usrEndPointRes.Value;                                                              //store user value

            //start a transaction
            using (Transaction acTrans = acCurDb.TransactionManager.StartOpenCloseTransaction())
            {
                BlockTable acBlkTbl;
                BlockTableRecord acBlkTblRec;
                //open model space for write
                acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, OpenMode.ForRead) as BlockTable;
                acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForWrite)
                                                                                    as BlockTableRecord;
                //define the new line
                Line usrLine = new Line(usrStart, usrEnd);
                usrLine.SetDatabaseDefaults();

                //add new line to the drawing
                acBlkTblRec.AppendEntity(usrLine);
                acTrans.AddNewlyCreatedDBObject(usrLine, true);

                //commit the changes and dispose of the transaction
                acTrans.Commit();
            }
        }
(side question, how do I add color to a portion of code?)

As usual, any help is appreciated.

[Jeff_M]

You are using the wrong PromptOption...

Code: [Select]

            usrPointOpts.UseBasePoint = true;
            usrPointOpts.BasePoint = usrStart; <<<<<

            PromptPointResult usrEndPointRes = acDoc.Editor.GetPoint(usrEndPointOpts);    <<<<<<<
[/code

[Jeff H]

PromptPointOptions inherits from PromptCornerOptions,
which has a UseDashedLine property

[Oak3s]

Jeff_M
Is this what it should be?

Code: [Select]

            //set a rubber band line
            usrEndPointOpts.UseBasePoint = true;
            usrEndPointOpts.BasePoint = usrStart;

            PromptPointResult usrEndPointRes = acDoc.Editor.GetPoint(usrEndPointOpts);
Thats what seems to be working as intended...

[Jeff_M]

That's correct.

[Oak3s]

Thank you.