Create new DGN file

To start with the OpenRoads designer, the first thing you need to do is create a Dgn file. The file has extension ".dgn". To create a new file, there must be an existing dgn file which serves as seed file.

The existing files which are used as seed can be found at location "C:\ProgramData\Bentley\OpenRoads Designer CE 10.11\Configuration\WorkSpaces\Training and Examples\Worksets\Training-Imperial\Standards\Seed\Seed2D - Imperial Training.dgn" if user has OpenRoads Designer installed.

Example

The below code snippet shows how to create a new dgn file using OpenRoads Designer SDK.

   
bool CreateNewDGNFile()
{

	Bentley.DgnPlatformNET.DgnFile newDGNFile;

	//Path of existing file which is used as seed file for creating new file
	String seedFilePath = "D:\\Dgn\\Seed2D-ImperialTraining.dgn";

	//Create and Initialize session
	Bentley.DgnPlatformNET.Host session = new Bentley.DgnPlatformNET.Host();
	Bentley.DgnPlatformNET.DgnPlatformLib.Initialize(session, true);

	//Create new document from seed file
	Bentley.DgnPlatformNET.DgnDocument document = Bentley.DgnPlatformNET.DgnDocument.CreateForLocalFile(seedFilePath);

	//Open the seed file for reading and copy the content from seed to new dgn 
	Bentley.DgnPlatformNET.DgnFileOwner owner = Bentley.DgnPlatformNET.DgnFile.Create(document, DgnFileOpenMode.ReadOnly);
	newDGNFile = owner.DgnFile;

	//load the newly created dgn for Read/Write
	Bentley.DgnPlatformNET.StatusInt openForWriteStatus;
	Bentley.DgnPlatformNET.DgnFileStatus fileStatus;
	if (DgnFileStatus.Success != (fileStatus = newDGNFile.LoadDgnFile(out openForWriteStatus)))
		return false;

	//To save the new dgn file 
	newDGNFile.DoSaveTo("D:\\Dgn\\LatestDgn.dgn", DgnFileFormatType.Current);

	return true;
}

Load the seed file in read mode to initialize the new dgn. Now load the newly created dgn in read/write mode and perform DoSaveTo() to save the newly created dgn file.