今天我们来讲个小例子。
是关于SOLIDWORKS Simulation的。
先说明一点，这东西我也不熟。有问题别问我

首先，我做了一个很难的分析，条件也是很复杂，具体操作我就不说了，分析结果如下:

当然这个图和我们今天要做的事情 关系不大，我们主要了解 一下如何连接到SOLIDWORKS Simulation 上并修改载荷参数，重新运行分析，得到新的结果 。
具体的api查找过滤和之前看帮助类似，我就直接上图了:

下面是关键代码:
把上面的力的大小从100 改成150，然后重新进行风格的划分，运行计算。
`
private void btnSimStudy_Click(object sender, EventArgs e)
{
var actPath = RegDllPath(“”);

        var start = actPath.Substring(0,actPath.IndexOf("CSharpAndSolidWorks",0));
                

        var partPath = $@"{start}CSharpAndSolidWorks\CSharpAndSolidWorks\TemplateModel\Simulation API Demo.SLDPRT";

        SldWorks swApp = PStandAlone.GetSolidWorks();

    
        CWModelDoc swsActDoc = default(CWModelDoc);
        CWStudyManager swsStudyMngr = default(CWStudyManager);
        CWStudy swsStudy = default(CWStudy);
        CWLoadsAndRestraintsManager swsLBCMgr = default(CWLoadsAndRestraintsManager);
        CWForce swsCWForce = default(CWForce); 

        int errors = 0;
        int warnings = 0;
   

        string fileName = partPath;

        // 打开模型
        var swModel = (ModelDoc2)swApp.OpenDoc6(fileName, (int)swDocumentTypes_e.swDocPART, (int)swOpenDocOptions_e.swOpenDocOptions_Silent, "", ref errors, ref warnings);

        // Get the SOLIDWORKS Simulation object
        dynamic COSMOSWORKS = default(dynamic);
        dynamic COSMOSObject = default(dynamic);

        // Determine host SOLIDWORKS major version
        int swVersion = Convert.ToInt32(swApp.RevisionNumber().Substring(0, 2));

        // Calculate the version-specific ProgID of the Simulation add-in that is compatible with this version of SOLIDWORKS
        int cwVersion = swVersion - 15;
        String cwProgID = String.Format("SldWorks.Simulation.{0}", cwVersion);
        Debug.Print(cwProgID);

        // Get the SOLIDWORKS Simulation object
        COSMOSObject = swApp.GetAddInObject(cwProgID);

        COSMOSWORKS = COSMOSObject.CosmosWorks;

        // Open and get active document
        swsActDoc = (CWModelDoc)COSMOSWORKS.ActiveDoc;

        if (swsActDoc == null) ErrorMsg(swApp, "No active document");

        // Create new static study
        swsStudyMngr = (CWStudyManager)swsActDoc.StudyManager;
        if (swsStudyMngr == null) ErrorMsg(swApp, "No CWStudyManager object");

        //得到第一个算例对象
        swsStudy = (CWStudy)swsStudyMngr.GetStudy(0);

        //算例名称，可以区分多个算例   swsStudy.Name



        if (swsStudy == null) ErrorMsg(swApp, "No CWStudy object");

        swsLBCMgr = (CWLoadsAndRestraintsManager)swsStudy.LoadsAndRestraintsManager;

        //get the Force Feature
        //这是是第一个条件，所以参数写0
        var sCwForce = swsLBCMgr.GetLoadsAndRestraints(0, out int errcode);

        if (sCwForce != null)
        {
            var swForce = (CWForce)sCwForce;
        
            swForce.ForceBeginEdit();

            

            //修改值为150
            swForce.NormalForceOrTorqueValue = 150;  
            var res = swForce.ForceEndEdit();

        }

        //Create mesh
        var CwMesh = (CWMesh)swsStudy.Mesh;

        if (CwMesh == null) ErrorMsg(swApp, "No mesh object");

        CwMesh.Quality = 1;
        CwMesh.GetDefaultElementSizeAndTolerance(0, out double el, out double tl);
        var errCode = swsStudy.CreateMesh(0, el, tl);
        if (errCode != 0) ErrorMsg(swApp, "Mesh failed");

        //Run
        swsStudy.RunAnalysis();
    }

    public void ErrorMsg(object swApp, string Message)
    {
        MessageBox.Show(Message);
        MessageBox.Show("'*** WARNING - General");
        MessageBox.Show("'*** " + Message);
        MessageBox.Show("");
    }

`
这样结果出来了，至于怎么拿到最新的结果 ，或者说截图的话后面有机会再讲了。
源码位置:
https://gitee.com/painezeng/CSharpAndSolidWorks