By?Daniel Du

當(dāng)前地圖在顯示管理器中默認(rèn)的名字是“Default”，如果你想通過(guò)程序更改地圖的名字，可以用下面的代碼來(lái)實(shí)現(xiàn)。你需要使用Display Manager API來(lái)做。首先獲取當(dāng)前地圖的Map ID，進(jìn)而獲得map對(duì)象，然后就可以為他的Name屬性賦值了。注意這個(gè)方法僅適用于map 3D 2012及以前版本，在Map 3D 2013中會(huì)拋出eCreateInvalidName錯(cuò)誤。

?

下面是完整實(shí)現(xiàn)代碼：

// (C) Copyright 2012 by Autodesk

//

using?System;

using?Autodesk.AutoCAD.Runtime;

using?Autodesk.AutoCAD.ApplicationServices;

using?Autodesk.AutoCAD.DatabaseServices;

using?Autodesk.AutoCAD.Geometry;

using?Autodesk.AutoCAD.EditorInput;

using?Autodesk.Gis.Map;

using?Autodesk.Gis.Map.Project;

using?Autodesk.Gis.Map.DisplayManagement;

?

// This line is not mandatory, but improves loading performances

[assembly:?CommandClass(typeof(ChangeMapNameInDM.MyCommands))]

?

namespace?ChangeMapNameInDM

{

?

??// This class is instantiated by AutoCAD for each document when

??// a command is called by the user the first time in the context

??// of a given document. In other words, non static data in this class

??// is implicitly per-document!

??public?class?MyCommands

? {

?

????Editor?ed =?Application.DocumentManager.MdiActiveDocument.Editor;

????MapApplication?app =?HostMapApplicationServices.Application;

?

??? [Autodesk.AutoCAD.Runtime.CommandMethodAttribute("CHGMAPNAME")]

????public?void?ChangeMapName()

??? {

??????try

????? {

????????string?mapName =?null;

????????PromptResult?stringPromptResult =?null;

????????bool?succeeded =?false;

??????? stringPromptResult = ed.GetString("\nEnter the new Map name:");

?

??????? mapName = stringPromptResult.StringResult.Trim();

????????if?(stringPromptResult.Status ==?PromptStatus.OK

????????????????????????? && mapName.Length > 0)

??????? {

????????? succeeded = changeMapName(mapName);

??????? }

????????else

??????? {

????????? ed.WriteMessage("\nERROR: Invalid Map name");

??????? }

?

????????if?(!succeeded)

??????? {

????????? ed.WriteMessage("\nERROR: Name change failure");

??????? }

????? }

??????catch?(System.Exception?err)

????? {

??????? ed.WriteMessage(err.Message);

????? }

??? }

?

?

????private?bool?FindCurrentMapId(ref?ObjectId?currentMapId)

??? {

??????bool?isFound =?false;

??????// Get the project associated with the current AutoCAD document

??????ProjectModel?project =?null;

????? Autodesk.AutoCAD.DatabaseServices.TransactionManager?TM

??????? = app.ActiveProject.Database.TransactionManager;

????? project = app.ActiveProject;

?

??????try

????? {

????????using?(Transaction?trans = TM.StartTransaction())

??????? {

??????????ObjectId?managerId =?DisplayManager.Create(project)

????????????????????????????? .MapManagerId(project,?true);

??????????MapManager?manager = trans.GetObject(managerId,?OpenMode.ForRead)

??????????????????????????????as?MapManager;

??????????if?(null?!= manager)

????????? {

??????????? currentMapId = manager.CurrentMapId;

??????????? isFound =?true;

????????? }

????????? trans.Commit();

??????? }

????? }

??????catch?(Autodesk.AutoCAD.Runtime.Exception)

????? {

??????? ed.WriteMessage("\nUnable to get the current Map's Object ID.");

????? }

?

??????return?isFound;

??? }

?

????public?bool?changeMapName(string?name)

??? {

??????// Get the Object Id for the current Map

??????ObjectId?currentMapId =?new?ObjectId();

??????string?message =?"";

????? Autodesk.AutoCAD.DatabaseServices.TransactionManager?TM

??????? = app.ActiveProject.Database.TransactionManager;

?

??????if?(!FindCurrentMapId(ref?currentMapId))

????? {

????????return?false;

????? }

?

?

??????try

????? {

????????using?(Transaction?trans = TM.StartTransaction())

??????? {

??????????Map?currentMap = (Map)trans.GetObject(currentMapId,?OpenMode.ForWrite);

??????????// Change the name

????????? currentMap.Name = name;

?

????????? trans.Commit();

??????? }

?

????? }

??????catch?(Autodesk.AutoCAD.Runtime.Exception?ex)

????? {

??????? message =?string.Format("\nUnable to change name, msg:{0}",

??????????????????????????????? ex.Message);

??????? ed.WriteMessage(message);

????? }

?

??????return?true;

??? }

? }

}

?

作者：峻祁連
郵箱：junqilian@163.com?
出處：http://junqilian.cnblogs.com?
轉(zhuǎn)載請(qǐng)保留此信息。



本文轉(zhuǎn)自峻祁連. Moving to Cloud/Mobile博客園博客，原文鏈接：http://www.cnblogs.com/junqilian/archive/2012/08/13/2636165.html，如需轉(zhuǎn)載請(qǐng)自行聯(lián)系原作者

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