帮我优化这段C#代码 public Beam CreateBeam(Part beam, Point startPoint, Point endPoint, string name, string par, double pro, double w, double sdx = 0.0, double edx = 0.0, int plane = 0, bool booleanPart = false, double planeoffset = 0) { Beam beam1 = new Beam { StartPoint = startPoint, StartPointOffset = { Dx = sdx }, EndPoint = endPoint, EndPointOffset = { Dx = edx }, Name = name, PartNumber = new NumberingSeries(par, 1), Material = beam.Material, Profile = { ProfileString = "PL" + pro + "" + w }, Position = { Depth = Position.DepthEnum.MIDDLE, PlaneOffset = planeoffset } }; switch (plane) { case 0: beam1.Position.Plane = Position.PlaneEnum.MIDDLE; break; case 1: beam1.Position.Plane = Position.PlaneEnum.LEFT; break; case 2: beam1.Position.Plane = Position.PlaneEnum.RIGHT; break; } beam1.Insert(); if (booleanPart) { beam1.Profile.ProfileString = "BL" + pro + "" + w; beam1.PartNumber.Prefix = ""; beam1.Class = BooleanPart.BooleanOperativeClassName; beam1.Modify(); BooleanPart part = new BooleanPart { Father = beam }; part.SetOperativePart(beam1); part.Insert(); beam1.Delete(); } else { CreateWeld(beam, beam1); } return beam1; }

可以根据以下几点来进行优化：

1. 将可选参数 sdx 和 edx 定义为可选参数语法，避免在调用函数时必须指定这两个参数。

2. 将 ProfileString 的字符串拼接改为 String.Format() 方法，使代码更易读。

3. 将 switch 语句改为使用枚举类型 PlaneEnum，并在声明 PlaneEnum 时使用 Flags 特性，使其支持多个平面的组合。

4. 将创建布尔运算的代码拆分出来，单独定义一个函数 CreateBooleanPart()，使代码更易读。

5. 将一些常量或者固定的字符串定义为常量或者静态变量，避免在多处使用时重复定义。

6. 添加注释，使代码更易读和维护。

根据以上优化，代码如下：

public Beam CreateBeam(Part beam, Point startPoint, Point endPoint, string name, string partNumber, double profile, double width, double startDx = 0.0, double endDx = 0.0, PlaneEnum plane = PlaneEnum.Middle, bool isBooleanPart = false, double planeOffset = 0.0)
{
    var beam1 = new Beam
    {
        StartPoint = startPoint,
        StartPointOffset = { Dx = startDx },
        EndPoint = endPoint,
        EndPointOffset = { Dx = endDx },
        Name = name,
        PartNumber = new NumberingSeries(partNumber, 1),
        Material = beam.Material,
        Profile = { ProfileString = string.Format("PL{0}*{1}", profile, width) },
        Position = { Depth = Position.DepthEnum.MIDDLE, PlaneOffset = planeOffset }
    };

    // 设置梁的平面
    beam1.Position.Plane = plane;

    beam1.Insert();

    if (isBooleanPart)
    {
        CreateBooleanPart(beam, beam1, profile, width);
    }
    else
    {
        CreateWeld(beam, beam1);
    }

    return beam1;
}

// 创建布尔运算的部件
private void CreateBooleanPart(Part beam, Beam beam1, double profile, double width)
{
    beam1.Profile.ProfileString = string.Format("BL{0}*{1}", profile, width);
    beam1.PartNumber.Prefix = "";
    beam1.Class = BooleanPart.BooleanOperativeClassName;
    beam1.Modify();
    var part = new BooleanPart { Father = beam };
    part.SetOperativePart(beam1);
    part.Insert();
    beam1.Delete();
}

// 定义平面枚举类型，并添加 Flags 特性支持多个平面组合
[Flags]
public enum PlaneEnum
{
    Middle = 0,
    Left = 1,
    Right = 2
}