[英]How to change Color of Block reference in autocad using interop COM
[英]Is it possible to edit block attributes in AutoCAD using Autodesk.AutoCAD.Interop?
我開發了一個外部 WPF 應用程序來在 c# 中生成繪圖。 我已經能夠使用 Autodesk.AutoCAD.Interop 繪制、標注、添加塊以及應用程序所需的所有其他內容,但是我似乎無法填充標題塊或生成零件清單。
我看到的所有示例都基於要求應用程序作為插件在 AutoCAD 中運行的機制。 事實是,使用 ModelSpace.InsertLine 插入一行代碼是一兩行代碼,現在,它至少有 8 行代碼!
有沒有辦法使用 Autodesk.AutoCAD.Interop 實現此功能? 或者有沒有辦法將互操作與可以從外部exe調用的插件結合使用?
對此的任何指示將不勝感激。
謝謝。
編輯來說明:
// before - Draw Line with Autodesk.AutoCAD.Interop
private static AcadLine DrawLine(double[] startPoint, double[] endPoint)
{
AcadLine line = ThisDrawing.ModelSpace.AddLine(startPoint, endPoint);
return line;
}
// Now - Draw line with Autodesk.AutoCAD.Runtime
[CommandMethod("DrawLine")]
public static Line DrawLine(Coordinate start, Coordinate end)
{
// Get the current document and database
// Get the current document and database
Document acDoc = Application.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
// Start a transaction
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
// Open the Block table for read
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, OpenMode.ForRead) as BlockTable;
// Open the Block table record Model space for write
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
// Create a line that starts at 5,5 and ends at 12,3
Line acLine = new Line(start.Point3d, end.Point3d);
acLine.SetDatabaseDefaults();
// Add the new object to the block table record and the transaction
acBlkTblRec.AppendEntity(acLine);
acTrans.AddNewlyCreatedDBObject(acLine, true);
// Save the new object to the database
acTrans.Commit();
return acLine;
}
}
是的,您絕對可以將這兩種方法結合起來。
編寫一個在 AutoCAD 中完成工作的進程內 DLL。 通過使用 [CommandMethod("MethodName")] 標記您的公共方法,使您希望調用的命令可用於命令行。
通過互操作調用啟動或連接 AutoCAD。
使用互操作 AcadApplication,網絡加載您的 DLL,然后從命令行調用您的工作函數。
*獎勵 *您也可以通過這種方式更輕松地將互操作參數傳遞給內部命令。
下面是一個示例,說明如何在進程內構建命令方法,然后通過 COM 調用它:
[CommandMethod("EditBlockAtt")]
public void EditBlockAtt()
{
var acDb = HostApplicationServices.WorkingDatabase;
var acEd = AcadApplication.DocumentManager.MdiActiveDocument.Editor;
var blockNamePrompt = acEd.GetString(Environment.NewLine + "Enter block name: ");
if (blockNamePrompt.Status != PromptStatus.OK) return;
var blockName = blockNamePrompt.StringResult;
var attNamePrompt = acEd.GetString(Environment.NewLine + "Enter attribute name: ");
if (attNamePrompt.Status != PromptStatus.OK) return;
var attName = attNamePrompt.StringResult;
var acPo = new PromptStringOptions(Environment.NewLine + "Enter new attribute value: "){ AllowSpaces = true };
var newValuePrompt = acEd.GetString(acPo);
if (newValuePrompt.Status != PromptStatus.OK) return;
var newValue = newValuePrompt.StringResult;
using (var acTrans = acDb.TransactionManager.StartTransaction())
{
var acBlockTable = acTrans.GetObject(acDb.BlockTableId, OpenMode.ForRead) as BlockTable;
if (acBlockTable == null) return;
var acBlockTableRecord = acTrans.GetObject(acBlockTable[BlockTableRecord.ModelSpace], OpenMode.ForRead) as BlockTableRecord;
if (acBlockTableRecord == null) return;
foreach (var blkId in acBlockTableRecord)
{
var acBlock = acTrans.GetObject(blkId, OpenMode.ForRead) as BlockReference;
if (acBlock == null) continue;
if (!acBlock.Name.Equals(blockName, StringComparison.CurrentCultureIgnoreCase)) continue;
foreach (ObjectId attId in acBlock.AttributeCollection)
{
var acAtt = acTrans.GetObject(attId, OpenMode.ForRead) as AttributeReference;
if (acAtt == null) continue;
if (!acAtt.Tag.Equals(attName, StringComparison.CurrentCultureIgnoreCase)) continue;
acAtt.UpgradeOpen();
acAtt.TextString = newValue;
}
}
acTrans.Commit();
}
}
然后從互操作 AcadApplication 中,netload dll 並以以下格式從命令行調用該方法:
(Command "EditBlockAtt" "BlockName" "AttributeName" "NewValue")
但是,如果您想使用純互操作,這可能會滿足您的需求,因為您在運行時有一個 AcadDocument 對象:
foreach (AcadEntity ent in acadDoc.ModelSpace)
{
var block = ent as AcadBlockReference;
if (block == null) continue;
{
if (!block.Name.Equals("BlockName", StringComparison.CurrentCultureIgnoreCase)) continue;
var atts = block.GetAttributes() as object[];
if (atts == null) continue;
foreach (var attribute in atts.OfType<AcadAttributeReference>()
.Where(attribute => attribute.TagString.Equals("AttributeName",
StringComparison.CurrentCultureIgnoreCase)))
{
attribute.TextString = "New Value";
}
}
}
另請注意,這是使用 AutoCAD 2012 互操作庫。 天啊。
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