AutoCAD Civil 3D :: Remove (delete) All Breakline Sets Included In Definition Of Surface

Oct 30, 2013

I would like remove(delete) all brealkine sets inluded in definition of surface.

Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;


However, I don´t understand how I can get type of Surface Operation..

This code line doesn´t work.

if (OperationColl[i].GetType().ToString()== "SurfaceOperationAddBreakline")

Autocad Civil 3D 2014 +SP1
Quad Core Intel i7 3770-cpu 3.40Ghz.
ssd samsung 840 pro 512gb+ssd samsung 840 pro 256 gb+1tb hdd
32gb RAM 1600 Mhz.
nVidia Quadro 2000.
Win 7 Pro 64bit

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AutoCAD Civil 3D :: API / Delete All Breakline Sets Included In Definition Of Surface?

Oct 29, 2013

I want delete all breakline sets of one selected surface using API.

There is "SurfaceOperationAddBreakline" but I don´t find "SurfaceOperationDeleteSetBreakline" for example.

Is there other way to delete all breakline sets of one surface?

Later, I want to create one set breakline for each layer which has been selected by user.

I know that I can use qselect, but I want do this process automatically.
Autocad Civil 3D 2014 +SP1
Quad Core Intel i7 3770-cpu 3.40Ghz.
ssd samsung 840 pro 512gb+ssd samsung 840 pro 256 gb+1tb hdd
32gb RAM 1600 Mhz.
nVidia Quadro 2000.
Win 7 Pro 64bit

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AutoCAD Civil 3D :: Remove Breakline From Surface Using .net API?

May 3, 2012

I see BreakLinesDefinition prop, but only add methods.

I assume the RemoveAt is of no use, as you cannot get the objectID of each breakline to decide if its one that should be removed.

COM is the only way it seems.


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AutoCAD Civil 3D :: Delete A Breakline And Keep It In The Drawing?

Dec 12, 2011

I have a feature line in my drawing. It is one of over 1000 breaklines in a surface. I want to delete it from the surface but keep it in the drawing. How do I do this?

In 2009 this was easy. I could erase the featue line then use the OOPS command to get it back in the drawing. Unlike the UNDO command, OOPS did not put it back in the surface definition. This was a wonderful feature/bug. In 2012 OOPS behaves the same as UNDO.

I found this post regarding finding a breakline in the surface definition but that is not realistic with 1000 breaklines.

Here are a few options I have tried:
Delete all breaklines from the surface and add the ones I want. (This is my best option so far.)Copy the featureline to the clipboard, erase it, then paste it back in. (Copying feature lines to the clipboard, or wblock, is very slow. The feature line should be moved back to the orignal site.)Explode the feature line into a 3D polyline and then convert back into a feature line. (Good option but does not work well for curves.)

Civil 3D 2012 SP3 | Win 7 64-bit SP1
Xeon E5-1620 @ 3.60GHz, 16GB Ram | NVidia Quadro 600

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AutoCAD Civil 3D :: Editing Breakline Within Surface

Dec 3, 2013

I have a point in my surface that has a bad elevation. My question is this, I unlocked the points and edited the point containing the bad elevation and I am wondering why my surface is not automatically updating. I have a breakline in the surface that uses the "bad" point and by editing the point to the correct elevation, I was assuming that my surface would automatically update, which did not happen, so I selected the breakline and edited that also to the correct elev., and the surface still did not update until I chose "rebuild surface" even though I had "rebuild surface automatically" turned on, so I am a bit confused.

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AutoCAD Civil 3D :: Surface Drawing Triangles Across Breakline

Jan 6, 2014

i am trying to add as a breakline. i have not been able to get this particular line to work as a breakline and the surface keeps drawing triangles through the line like its not even there. The figure properties show that it is a breakline. The figure prefix database brings the line style in as a breakline from the start.

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AutoCAD Civil 3D :: Create A Separate Surface Inside Breakline?

Jul 2, 2012

I have created a breakline from a feature line which cuts the triangles of my surface. Is there any way to create a seperate surface from the triangles inside the breakline.

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AutoCAD Civil 3D :: Surface Display Disappears When Breakline Added

Sep 24, 2013

After adding 9 or so breaklines, the display of my surface (e.g. contours) disappears when I add the next breakline.  Based on the surface elevation shown at the pointer location, the breakline seems to have been added and the surface rebuilt. 

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AutoCAD Civil 3D :: Adding Data To A Surface / Non-Destructive Breakline

Nov 7, 2012

When adding data to a surface, there is the option to add it as a "Non-destructive" breakline. [URL] .....

What is this good for? I created a surface, copied it, and created a volume surface between the two of them. As expected, the resultant volume was 0.

I then draw a 3d polyline and snapped to elevations on the surface. I then took that 3d polyline and moved it up 5'. I then added that breakline to the surface as a "Non-destructive" breakline and the resultant volume between the original surface and the one modified with the new breakline was still 0. Absolutely no change was made to the actual surface, it just added additional triangles. 

I'm trying to find a reason it's even option and I'm coming up blank. There has to be SOME reason it's there.

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AutoCAD Civil 3D :: Error Adding Breakline Message When Editing Surface With Feature Lines

Jul 11, 2012

I am working on a 6 mile highway project whose surface file is 85MB big. So, I created a Data Shortcut of this surface and used this for creating profiles. However, at some locations the corridors go below the surface(as per their original profile) which was not intended. So, I need to restrict the surface to follow the corridors but not go beyond it.

I have created feature lines from corridors and tried to add them as breaklines to the surface. But " error adding breakline" error pops up. 

Is it because I am trying to add the breaklines to the mirror surface which I created from Data Shortcut ??

Will it be useful if I copy feature lines to original surface file and add these feature lines as breaklines in that file??

Windows 7 x 64
Nvidia Quadro 2000
24 GB Ram
i7 960 @ 3.20 GHz
Civil 3D 2012

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AutoCAD Civil 3D :: Surface Not Extending To All Included Points

Jun 25, 2013

2013 version. Long story short, I am having problems with pressure networks in my drawing so to simplify things I want to just show the top of the current watermain in my profiles because we are not doing anything with the water main, though it needs to be shown in the profile. To do this I created some points where the watermain is and made their elevation 1.8m lover than the existing surface at those points (due to the 1.8m of cover the watermain has).

I then created a surface using those points and an outer boundary surrounding the points. For some reason the surface stops at one point and doesn't continue to the rest (about 5 more points). So when I create my profile the surface stops short. The points are included in the point group the surface uses, and the outer boundary doesn't cut them out either. Not sure why the surface isn't referencing those points.

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AutoCAD Civil 3D :: Surface From Corridor Loses Definition?

Oct 31, 2012

C3d 2011 updated to all service packs

39 meg overlot design file

I have had this issue at least 3 times and twice on the same drawing.  I create a surface from corridor and add several polylines and feature line as well as a boundary to the surface.  Randomly it will lose all definition (breaklines and boundary) and i will have to "select similar" (and hope I get everything) and add all of my definition back.

It seems to only occur on large files and when my frequency is tight on curve and vertical curves.

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AutoCAD Civil 3D :: Add Points Option Missing From Surface Definition

Feb 13, 2013

I have been trying to follow "Autodesk 3d Civil Help>Surfaces>Adding and Editing Surface Data" in order to construct a surface from a point cloud I have, in x,y,z format. I have been trying to creat a grid surface since my data is regular DTM data.

 My first issue is that a lot of the options are greyed out when creating the surface (for example I cannot change "Render Material Style". I can still create a surface though. The second, more important issue, is that I am then told to expand the surface definiton section on the Prospector tab and click on the points icon there. This icon is simply not there for me - I have a choice of Boundaries, DEM Files or Edits.

 I should point out that I am working in Autodesk Civil 3d 2006.

Is it some issue with the liscence/installation? Or am I missing something erally obvious that greys out some options and makes others dissapear completely!

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Feb 1, 2013

I graded a commercial site with mostly feature lines. I added points where I needed them to get everything to work. After modifying my surface, I suddenly have zero elevations randomly throughout my site. They don't make any sense why they appear. Some are just added to my drawing and others are existing points that were changed to zero. I can go to a back up drawing from a few hours ago and redo some grading, but I would like to know if there is a way to just erase zero elevations from the surface. I remember LDD was able to create surfaces ignoring elevations below a set elevation.

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AutoCAD Civil 3D :: How To Delete The Broken Surface Reference

Jul 19, 2007

I have got the ole Program Errors Dialogue back again. It seemed to stem from a rogue data shortcut that got broken.

I could not delete the broken surface reference, so had to create another data shortcut, create a reference and then I had the opportunity to delete the rogue surface and then the data shortcut.

Anyway, I got this error on Audit. (see image attached)

and this was the audit command line dump...

Command: audit

Fix any errors detected? [Yes/No] : y

Auditing Header

Auditing Tables

Auditing Entities Pass 1

Pass 1 100 objects audited

XData String Length 260 > 255
Truncate to 255

could not be repaired.

Pass 1 30600 objects audited

Auditing Entities Pass 2


I may have made an error by importing a data shortcut I didn't need in past weeks on this job. When a data shortcut is broken, it is quite hard to remove the reference.

Anyway, perhaps I just need to upgrade but I don't want to do it for this curent project as I am almost finished. (famous last words).

So what is causing this error that cannot be fixed? I didn't ask foran Xdata string to exceed 255 characters...

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Feb 8, 2013

I can delete the label once and modify the surface triangulation

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AutoCAD Civil 3D :: How To Delete / Remove Parcel Segment Element

Oct 8, 2011

How can I remove Parcel Segment Element? I have oPar as AeccParcel and oSeg as AeccParcelSegment

AeccParcelLoop loop = oPar.ParcelLoops[0];           
List<AeccParcelSegmentElement> SegElem = new List<AeccParcelSegmentElement>();
foreach (AeccParcelSegmentElement segE in loop)       
SegElem.Add(segE); // Seem not good idea here.. because all segE in this list look the same           
foreach (AeccParcelSegmentElement oSE in oSeg)           
if (!SegElem.Contains(oSE))               

***delete/remove oSE here //can't find info, how to delete/remove this segment element           

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AutoCAD Civil 3D :: How To Remove The Loops From Surface

Jun 8, 2013

Today's Question is as mentioned above, How to remove the loops from a surface?

I have a surface created from the points. Eventually it has got many ups & downs in the elevations, so I did delete some of the points from the surface. And due to this, some loops are developed inside the surface itself with the closed boundaries.

I also tried to draw surface lines in those loops, either they get shorten or gets enlarged but does not completely vanishes...

64 bit OS | Win-7 | 3.60 GHz Processor | 16.0 GB RAM | Civil 3D 2013 |

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AutoCAD Civil 3D :: Cannot Remove Points From Surface

Mar 29, 2013

I have an "existing" surface built. But there has been some construction since my company surveyed the site. So, my surveyor went out and got the new points in the area of the new construction. I am trying to remodel the "existing" surface without rebuilding the entire surface. I have removed the old (demoed) points from the point group used to define the surface. But, the points are not being removed from the surface.

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Nov 5, 2013

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With  SurfaceBreakline.Vertices  property I can get a ObjectId collection of them but generally will contain more vertex that original vertex because it depend of "weeding factor" values and "suplementing factor" values.

How can I get only original vertex from breakline?Perhaps, API should have other property to get only original vertex from breakline.

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Dec 17, 2013

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AutoCAD Civil 3D :: Automatically Creating Breakline From Existing Surfaces?

Nov 15, 2012

Our company, was contracted to create a DTM of a residential neighborhood using our Lieca HDS C10 Laser Scanner.  Utilizing the Leica software I was provided LandXML file that contained a 2ft by 2ft Mesh surface along with breaklines for the edge of roadway, driveways and sidewalks, which was imported into Civil 3D 2012.   

Our client now wishes for us to provide them with a breakline for the crown of the roadway.  My first thoughts on calculating such breakline was to set the Contours at an interval of 0.05' to identify the crown of the road, then drawn the break line along the crown based on contours. 

Is there a way to automatically create a Breakline from Exisitng Surfaces? 

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May 12, 2012

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AutoCAD Civil 3D :: Remove Feature Line Used As Break Line When Creating Surface

Dec 11, 2012

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I noticed the same thing happens when I removed the surface boundary and inserted a new boundary.  why these points remain and how to remove when I delete boundary and feature line from surface?

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Dec 21, 2013

I got this problem during creation of corridor surface boundaries. I would like to create a corridor datum surface using the daylight feature lines, automatically from the corridor surfaces-boundaries dialog box, but the daylight does not appear in the list.

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check and see if there is a "Modeldoc.cuix" file included in your Civil 3D directories anywhere?

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