C# SolidWorks 二次开发 API --- 插入图块和属性块

在还没有取消所有2D图纸时，我们难免需要在图纸中插入一些标准图块，或者像AutoCAD那个的属性块。

如下图： 

 

直接上代码：

private void btn_Insert_Block_Click(object sender, EventArgs e)
        {
            //连接到Solidworks
            ISldWorks swApp = Utility.ConnectToSolidWorks();

            ModelDoc2 swModel = (ModelDoc2)swApp.ActiveDoc;

            DrawingDoc dc = (DrawingDoc)swModel;

            // SelectionMgr selectionMgr = (SelectionMgr)swModel.SelectionManager;

            double[] nPt = new double[3];

            nPt[0] = 0;
            nPt[1] = 0;
            nPt[2] = 0;

            MathUtility swMathUtil = swApp.GetMathUtility();

            MathPoint swMathPoint = swMathUtil.CreatePoint(nPt);

            double blockScale = 1;

            string blockPath = @"D:\09_Study\CSharpAndSolidWorks\CSharpAndSolidWorks\TemplateModel\TestBlock.SLDBLK";

            //插入图块
            var swBlockInst = InsertBlockReturnInst(swApp, swModel, swMathPoint, blockPath, blockScale);

            //  swModel.SketchManager.MakeSketchBlockFromFile(mathPoint, blockPath, false, blockScale, 0);

            //修改块的属性(如果只是普通的图块，则无需要这一步。直接使用上面的一行插入图块即可)
            swBlockInst.SetAttributeValue("Title1", "Paine");
        }

        /// <summary>
        /// 插入并返回最后一个图块实例
        /// </summary>
        /// <param name="sldWorks"></param>
        /// <param name="modelDoc2"></param>
        /// <param name="mathPoint"></param>
        /// <param name="blockPath"></param>
        /// <param name="blockScale"></param>
        /// <returns></returns>
        private SketchBlockInstance InsertBlockReturnInst(ISldWorks sldWorks, ModelDoc2 modelDoc2, MathPoint mathPoint, String blockPath, double blockScale)
        {
            SketchBlockInstance swBlockInst;
            List<String> NowBlockName = new List<String>();
            var swModel = modelDoc2;
            Boolean boolstatus = swModel.Extension.SelectByID2(System.IO.Path.GetFileNameWithoutExtension(blockPath), "SUBSKETCHDEF", 0, 0, 0, false, 0, null, 0);

            if (boolstatus == true)
            {
                Feature swFeat = swModel.SelectionManager.GetSelectedObject6(1, 0);
                var swSketchBlockDef = swFeat.GetSpecificFeature2();

                var nbrBlockInst = swSketchBlockDef.GetInstanceCount;

                if (nbrBlockInst > 0)
                {
                    var vBlockInst = swSketchBlockDef.GetInstances();

                    for (int i = 0; i < nbrBlockInst; i++)
                    {
                        swBlockInst = vBlockInst[i];

                        NowBlockName.Add(swBlockInst.Name.ToString());
                    }

                    swModel.SketchManager.MakeSketchBlockFromFile(mathPoint, blockPath, false, blockScale, 0);

                    swModel.ClearSelection2(true);

                    boolstatus = swModel.Extension.SelectByID2(System.IO.Path.GetFileNameWithoutExtension(blockPath), "SUBSKETCHDEF", 0, 0, 0, false, 0, null, 0);

                    swFeat = swModel.SelectionManager.GetSelectedObject6(1, 0);
                    swSketchBlockDef = swFeat.GetSpecificFeature2();

                    nbrBlockInst = swSketchBlockDef.GetInstanceCount;

                    if (nbrBlockInst > 0)
                    {
                        vBlockInst = swSketchBlockDef.GetInstances();

                        for (int j = 0; j < nbrBlockInst; j++)
                        {
                            swBlockInst = vBlockInst[j];
                            if (!NowBlockName.Contains(swBlockInst.Name.ToString()))
                            {
                                swModel.Extension.SelectByID2(swBlockInst.Name, "SUBSKETCHINST", 0, 0, 0, false, 0, null, 0);
                                swBlockInst = GetSketchBlockInstanceFromSelection();
                                return swBlockInst;
                            }
                        }
                    }
                    return null;
                }
                else
                {
                    return null;
                }
            }
            else
            {
                var swSketchBlockDef = swModel.SketchManager.MakeSketchBlockFromFile(mathPoint, blockPath, false, blockScale, 0);
                swBlockInst = swSketchBlockDef.GetInstances()[0];

                return swBlockInst;
            }
        }

        private SketchBlockInstance GetSketchBlockInstanceFromSelection()
        {
            ISldWorks swApp = Utility.ConnectToSolidWorks();

            ModelDoc2 swModel;
            ModelDocExtension swModelDocExt;
            SketchBlockInstance SketchBlockInstance;

            DateTime time = DateTime.Now;

            try
            {
                swModel = swApp.ActiveDoc;
                swModelDocExt = swModel.Extension;

                SelectionMgr swSelectionMgr;
                swSelectionMgr = swModel.SelectionManager;

                string SelectByString = "";
                string ObjectType = "";
                int type;
                double x;
                double y;
                double z;

                if (swSelectionMgr.GetSelectedObjectCount2(-1) > 1)
                {
                    // Return only a SketchblockInstance when only one is selected...
                    // modify if you want return more than one (or only the first) selected Sketchblockinstance
                    return null;
                }

                swSelectionMgr.GetSelectionSpecification(1, out SelectByString, out ObjectType, out type, out x, out y, out z);
                Debug.WriteLine(SelectByString + " " + ObjectType + " " + type);

                if (type == (int)swSelectType_e.swSelSUBSKETCHINST)
                {
                    SketchBlockInstance = swSelectionMgr.GetSelectedObject6(1, -1);
                    Debug.WriteLine("Found:" + SketchBlockInstance.Name);
                    return SketchBlockInstance;
                }
                else if (type == (int)swSelectType_e.swSelSKETCHSEGS | type == (int)swSelectType_e.swSelSKETCHPOINTS)
                {
                    // Show if a sketchblockinstance has the same name
                    SketchManager SwSketchMgr;
                    SwSketchMgr = swModel.SketchManager;

                    object[] blockDefinitions = (object[])SwSketchMgr.GetSketchBlockDefinitions();
                    foreach (SketchBlockDefinition blockDef in blockDefinitions)
                    {
                        foreach (SketchBlockInstance blockInstance in blockDef.GetInstances())
                        {
                            if (SelectByString.EndsWith(blockInstance.Name))
                            {
                                Debug.WriteLine("Found:" + blockInstance.Name);
                                return blockInstance;
                            }
                        }
                    }
                }
                else
                {
                    return null;
                }
            }
            catch (Exception ex)
            {
            }
            finally
            {
                Debug.WriteLine(DateTime.Now.Subtract(time).Milliseconds);
            }

            return null;
        }