C# AutoCAD插入外部块

您可以使用以下C#代码将外部块插入到AutoCAD中：

using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;

public void InsertBlock(string blockPath, Point3d insertionPoint)
{
    // 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 definition file
        BlockTable acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, OpenMode.ForRead) as BlockTable;
        if (!acBlkTbl.Has(blockPath))
        {
            acDoc.Editor.WriteMessage("Block " + blockPath + " not found.");
            return;
        }

        // Open the block definition
        BlockTableRecord acBlkTblRec = acTrans.GetObject(acBlkTbl[blockPath], OpenMode.ForRead) as BlockTableRecord;

        // Create a new block reference
        BlockReference acBlkRef = new BlockReference(insertionPoint, acBlkTbl[blockPath]);
        acCurDb.AddToModelSpace(acBlkRef);

        // Explode the block and add the entities to the block reference
        foreach (ObjectId acObjId in acBlkTblRec)
        {
            Entity acEnt = acTrans.GetObject(acObjId, OpenMode.ForRead) as Entity;
            acBlkRef.AttributeCollection.AppendAttribute(acEnt as AttributeReference);
        }

        // Save the new block reference to the database
        acTrans.AddNewlyCreatedDBObject(acBlkRef, true);

        // Commit the transaction
        acTrans.Commit();
    }
}

使用此方法，您需要提供外部块的路径和插入点。该方法将打开块定义文件，将其作为新的块引用插入到AutoCAD中并将其保存到数据库中。您可以在AutoCAD命令行中调用此方法或将其添加到您的C#应用程序中。