C# AutoCAD替换块
时间: 2023-11-23 15:09:12 浏览: 36
要在C#中替换AutoCAD中的块,您可以使用以下代码:
```
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
public void ReplaceBlock(string blockName, string newBlockName)
{
// 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;
// Check if the block exists
if (!acBlkTbl.Has(blockName))
{
acDoc.Editor.WriteMessage("\nBlock " + blockName + " does not exist.");
return;
}
// Open the block definition for write
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl[blockName], OpenMode.ForWrite) as BlockTableRecord;
// Get the block reference iterator
BlockReferenceEnumerator blkRefEnum = acBlkTblRec.GetBlockReferenceEnumerator();
// Loop through each block reference
while (blkRefEnum.MoveNext())
{
BlockReference blkRef = blkRefEnum.Current as BlockReference;
// Check if the block reference is using the block we want to replace
if (blkRef.Name == blockName)
{
// Get the insertion point
Point3d insertionPt = blkRef.Position;
// Get the block table record ID for the new block
ObjectId newBlockId = acBlkTbl[newBlockName];
// Replace the block reference with the new block
blkRef.UpgradeOpen();
blkRef.BlockTableRecord = newBlockId;
blkRef.DowngradeOpen();
}
}
// Save the new block definition and commit the transaction
acTrans.Commit();
}
}
```
此代码将替换名为 `blockName` 的块,将其替换为名为 `newBlockName` 的块。请注意,此代码假定您已经在AutoCAD中打开了一个文档,并且该文档包含要替换的块。