表达式类型和语法示例

表达式类型和语法示例

下面是不同类型的表达式及其语法示例：
  • 常规符号（算术）
    • 1 +"4" 将返回值 5
    • 2.3 * 3 将返回值 6.9
    • 12/5 将返回值 2.4
    • 12\5 将返回值 2
    • 指数 (^)
    • 模运算 (%)
    • 等于 (==)
    • 不等于 (!=)
    • 小于 (<)
    • 大于 (>)
    • 小于等于 (<=)
    • 大于等于 (>=)
    • 和 (&&)
    • 或 (| |)
    • 非 (!)- 否定 True 或 False 值
  • 字符串连接
    • 1 & "4" 将返回值 "14"
    • "Pipe" & "and" & "Valve"将返回值 "Pipe and Valve"
  • IIf 符号（条件）
    • IIf (500>200, "math ok", "math wrong") 将返回值“math ok”
    • IIf (500<200, "math ok", "math wrong") 将返回值“math wrong”
  • IIf 符号（比较）
    • 20<10 将返回值“false”
    • IIf(System.String.Compare ("Pipe", "Pipe"), "match", "no match") 将返回值“match”
  • 系统数学
    • System.Math.Abs (value)
    • System.Math.Acos (value)
    • System.Math.Asin (value)
    • System.Math.Atan (value)
    • System.Math.Atan2 (y,x)
    • System.Math.BigMul (a,b)
    • System.Math.Ceiling (a)
    • System.Math.Cos (r)
    • System.Math.Cosh (r)
    • System.Math.E
    • System.Math.Exp (p)
    • System.Math.Floor (d)
    • System.Math.IEEERemainder (x,y)
    • System.Math.Log (r)
    • System.Math.Log10 (d)
    • System.Math.Max (x,y)
    • System.Math.Min (x,y)
    • System.Math.PI
    • System.Math.Pow (x,y)
    • System.Math.Round (value)
    • System.Math.Sin(45*System.Math.PI/180)
    • System.Math.Sin(Double a)
    • System.Math.Sinh(a)
    • System.Math.Sqrt(Double d)
    • System.Math.Tan (a)
    • System.Math.Tanh (a)
    • System.Math.Round(4.53459)
    • System.Math.Log(1.2) / System.Math.Log(0.1)
    • System.Math.Max(1.2, 1.1)
  • 系统路径
    • System.Path.GetFileNameWithoutExtension("C:\ProgramData\Bentley\东慧鸾图 \Configuration\Organization\Dgnlib\Gui\test.dgnlib") 将返回值“test”
    • System.Path.GetExtension("C:\ProgramData\Bentley\东慧鸾图 \Configuration\Organization\Dgnlib\Gui\test.dgnlib") 将返回值“.dgnlib”
    • System.Path.Combine (path1,path2)
    • System.Path.GetDirectoryName (path)
    • System.Path.GetExtension (path)
    • System.Path.GetFileName (path)
    • System.Path.GetFileNameWithoutExtension (path)
    • System.Path.GetFullPath (path)
  • 系统字符串
    • System.String.Compare (string1,string2)
    • System.String.CompareI (string1,string2)
    • System.String.Contains(String string1, String string2)
    • System.String.Containsl(String string1, String string2)
    • System.String.Format (format,arg0)
    • System.String.IndexOf (search,find)
    • System.String.LastIndexOf (search,find)
    • System.String.Length("Pipe") 将返回值“4”
    • System.String.Substring (value,startIndex,length)
    • System.String.ToLower (value)
    • System.String.ToString (value)
    • System.String.ToUpper (value)
    • System.String.Trim (value)
  • 元素属性
    • this.GetElement().ElementID
    • this.GetElement().TotalLength
    • this.GetElement().ElementDescription
    • this.GetElement().Color
  • 注： 支持语法 "this(" 和 "Column("，以支持向后兼容性。
  • 模型特性
    • this.GetModel().Is3D
    • this.GetModel().Name
    • this.GetModel().Description
    • this.GetModel().Resolution
  • 文件属性
    • this.GetFile().Author
    • this.GetFile().Editor
    • this.GetFile().FileName
  • GetItemSameLibrary()
    • this.GetItem("Lib1Itp1").TextProp
    • this.GetItem("Lib1Itp1").IntegerProp
    • this.GetItem("Lib1Itp1").DoubleProp
    • this.GetItem("Lib1Itp1").ArrayProp[0] & " \" & this.GetItem("Lib1Itp1").ArrayProp[1]
  • GetItemDifferentLibrary()
    • this.GetItem("Lib1:Lib1Itp1").TextProp
    • this.GetItem("Lib1:Lib1Itp1").IntegerProp
    • this.GetItem("Lib1:Lib1Itp1").ArrayProp[0] & " \" & this.GetItem("Lib1:Lib1Itp1").ArrayProp[1]
  • GetItemExtrinsicSchema
    • this.GetItem("DGNECPlugin_Test:Father").FirstName
    • this.GetItem("DGNECPlugin_Test:Father").FirstName & " \" & this.GetItem("DGNECPlugin_Test:Father").LastName
  • GetItemRelatedExtrinsicSchema
    • this.GetItem("DGNECPlugin_Test:Father").FirstName & " \" & this.GetItem("DGNECPlugin_Test:Father").LastName"
    注： 已弃用 GetRelatedItem。请改用 *GetRelatedInstance*。
  • MSTN 变量
    • MSTNvariable.GetLocalTempDirectoryBaseName()
    • MSTNvariable.GetNameForTemporaryFile(String partialPathName, String prefix)
    • MSTNvariable.GetVariable("MS_CELL")
    • MSTNvariable.IsVariableDefinedAndTrue("MS_CELL")
    • MSTNvariable.IsVariableDefinedAndFalse("MS_CELL")
    • MSTNvariable.IsVariableDefined("MS_CELL")
    • MSTNvariable.GetLocalTemporaryDirectory("Bentley")
  • 设计文件设置
    • DesignFileSetting.GetMasterUnitName()
    • DesignFileSetting.GetActiveAngle()
    • DesignFileSetting.GetAxisAngle()
    • DesignFileSetting.GetTagIncrement()
    • DesignFileSetting.GetFenceClip()
    • DesignFileSetting.GetFenceOverlap()
    • DesignFileSetting.GetFenceVoid()
    • DesignFileSetting.GetGridLock()
    • DesignFileSetting.GetGridRef()
    • DesignFileSetting.GetIsometricLock()
    • DesignFileSetting.GetGraphicGroup()
    • DesignFileSetting.GetSubUnitName()
    • DesignFileSetting.GetAngleLock()
    • DesignFileSetting.GetAngleTolerance()
    • DesignFileSetting.GetSnapMode()
    • DesignFileSetting.GetPointerColor()
    • DesignFileSetting.GetHiLightColor()
    • DesignFileSetting.GetScaleTolerance()
    • DesignFileSetting.GetGridAspect()
    • DesignFileSetting.GetGridOrientation()
    • DesignFileSetting.GetSnapDivisor()
    • DesignFileSetting.GetSnapAssociation()
    • DesignFileSetting.GetIsoPlane()
    • DesignFileSetting.GetStreamDelta()
    • DesignFileSetting.GetStreamTol()
    • DesignFileSetting.GetStreamAngle()
    • DesignFileSetting.GetStreamArea()
    • DesignFileSetting.GetStreamAcceptance()
    • DesignFileSetting.GetSolidsArea()
    • DesignFileSetting.GetAngleClockwise()
    • DesignFileSetting.GetAngleBase()
    • DesignFileSetting.GetActiveScaleX()
    • DesignFileSetting.GetActiveScaleY()
    • DesignFileSetting.GetAxisLock()
    • DesignFileSetting.GetBackground(1)
    • DesignFileSetting.GetPixelWidth(1)
    • DesignFileSetting.GetPixelHeight(1)
    • DesignFileSetting.GetSelectionSetClr()
    • DesignFileSetting.GetSnapACSPlane()
    • DesignFileSetting.GetACSPlaneLock()
    • DesignFileSetting.GetScaleLock()
    • DesignFileSetting.GetSnapLock()
    • DesignFileSetting.GetLevelLock()
  • 激活文件
    • ActiveFile.ACSPlaneSnap
    • ActiveFile.ActiveAngle
    • ActiveFile.AngleLock
    • ActiveFile.Association
    • ActiveFile.Author
    • ActiveFile.AuthoringProductName
    • ActiveFile.AxisLock
    • ActiveFile.Client
    • ActiveFile.Comments
    • ActiveFile.ConnectProjectGUID
    • ActiveFile.CreateDate
    • ActiveFile.DesignRevisionCount
    • ActiveFile.DesignRevisions
    • ActiveFile.Editor
    • ActiveFile.FileName
    • ActiveFile.FileSize
    • ActiveFile.Format
    • ActiveFile.FormatMinorVersion
    • ActiveFile.GetClass()
    • ActiveFile.FormatMajorVersion
    • ActiveFile.GetInstanceId()
    • ActiveFile.GetInstanceLabel()
    • ActiveFile.GetRelatedInstance()
    • ActiveFile.Increment
    • ActiveFile.IsOfClass("Room","ExampleSchema.01.00")
    • ActiveFile.KeyPointDevisor
    • ActiveFile.Keywords
    • ActiveFile.LastSavedBy
    • ActiveFile.LevelLock
    • ActiveFile.Levels
    • ActiveFile.LevelsUsed
    • ActiveFile.Manager
    • ActiveFile.Models
    • ActiveFile.Orientation
    • ActiveFile.OriginalFileFormat
    • ActiveFile.Owner
    • ActiveFile.PlotDate
    • ActiveFile.ProjectAssetType
    • ActiveFile.ProjectIndustry
    • ActiveFile.ProjectLocation
    • ActiveFile.ProjectName
    • ActiveFile.ProjectNumber
    • ActiveFile.ProjectStatus
    • ActiveFile.Revision
    • ActiveFile.RevisionNumber
    • ActiveFile.SaveDate
    • ActiveFile.ScaleLock
    • ActiveFile.Sheet_Number
    • ActiveFile.ScaleTolerance
    • ActiveFile.SnapLock
    • ActiveFile.SnapMode
    • ActiveFile.StartAngle
    • ActiveFile.Subject
    • ActiveFile.Title
    • ActiveFile.Tolerance
    • ActiveFile.TotalEditingTime
    • ActiveFile.WorkSetDescription
    • ActiveFile.WorkSetName
    • ActiveFile.WorkSpaceName
    • ActiveFile.XActiveScale
    • ActiveFile.YActiveScale
    • ActiveFile.ZActiveScale
  • 会话
    • Session.IsActiveFileInCfgVarList("MS_GUIDGNLIBLIST")
    • Session.IsV7DgnFile()
    • Session.IsDwgFile()
    • Session.IsDxfFile()
    • Session.IsReadOnlyFile()
    • Session.IsBentleyView()
    • Session.ItemBrowserInBentleyView()
    • Session.ActiveTaskType()
    • Session.ActiveWorkflow()
    • Session.AreCustomTasksAvailable()
    • Session.IsCustomTaskAvailable()
    • Session.ActiveCommandKeyin()
    • Session.IsMdlLoaded("PSELECT")
    • Session.EvalNEAsDouble("1+2",3.7)
    • Session.EvalNEAsInt("3+4",9)
    • Session.EvalNEAsBool("false","true")
    • Session.EvalNEAsString("a+b","abc")
    • Session.TreatActiveModelAs3D()
    • Session.ActiveModelIsReference()
    • Session.ActiveModelIs3dPrintingModel()
    • Session.ActiveModelIsMarkup()
    • Session.ActiveModelTypeIsDesign()
    • Session.ActiveModelTypeIsSheet()
    • Session.ActiveModelTypeIsDrawing()
    • Session.IsDisplaySetActive()
    • Session.IsNamedToolBoxOpen("Extra Tools")
    • Session.IsToolBoxOpen(-548,"MGDSHOOK")
    • Session.IsToolFrameOpen(-548,"MGDSHOOK")
    • Session.IsMdlDialogOpen()
    • Session.IsViewDisplayed()
    • Session.ActiveAnnotationScale()
    • Session.IsSnapModeValid(2048)
    • Session.ActiveSnapMode()
    • Session.DefaultSnapMode()
    • Session.IsProductLicensed(1000,"08.11.00..00")
    • Session.IsAccuSnapEnabled()
    • Session.GetTextElementJustification()
    • Session.SetTextElementJustification()
    • Session.GetSnapModeMenuMark(SnapMode.Keypoint)
    • Session.IsUndoActive()
    • Session.IsRedoActive()
    • Session.UndoCommandString()
    • Session.RedoCommandString()
    • Session.IsContextualTabSetKeyActive()
    • Session.IsUIItemStateEnabled("MyItem.Key",false)
    • Session.IsUIItemStateEnabled("MyItem.Key",false)
    • Session.IsUIItemStateChecked()
    • Session.GetUIItemStateMenuMark("MyItem.Key")
    • Session.IsSheetIndexReadOnly()
    • Session.ActiveAnnotationScaleString()
    • Session.ActiveAcsDescription()
    • Session.ActiveFileAllowsExports()
    • Session.ActiveFileAllowsPrinting()
    • Session.ActiveFileIsScratch()
    • Session.ActiveFileIsAConfiguredDgnlib()
    • Session.IsTaskNavigationInRibbon()
    • Session.IsLevelManagerAllowed()
  • 工作集
    • WorkSet.ProjectName
    • WorkSet.ProjectIndustry
    • WorkSet.ProjectNumber
    • WorkSet.ConnectProjectGUID
    • WorkSet.ProjectAssetType
    • WorkSet.ProjectLocation
    • WorkSet.ProjectStatus
    • WorkSet.WorkSetDescription
    • WorkSet.WorkSetName
    • WorkSet.WorkSpaceName
注： 如果在创建工作空间时已添加高级属性（如自定义日期或自定义文本），则应使用以下表达式：

WorkSet.CustomPropertyName

  • System.Date Time（为此，您必须在项类型中创建 Date1 和 Date2 属性）
    • System.DateTime.Now()
    • System.DateTime.GetYear(System.DateTime.Now())
    • System.DateTime.GetDateOnly(System.DateTime.Now())
    • System.DateTime.GetDayOfYear(System.DateTime.Now())
    • System.DateTime.GetMillisecond(System.DateTime.Now())
    • System.DateTime.GetSecond(System.DateTime.Now())
    • System.DateTime.GetMinute(System.DateTime.Now())
    • System.DateTime.GetHour(System.DateTime.Now())
    • System.DateTime.GetMonth(System.DateTime.Now())
    • System.DateTime.ToLocalTime(System.DateTime.Now())
    • System.DateTime.Compare(this.date1,this.date2)
    • System.DateTime.UtcNow()
    • System.DateTime.Equals(this.date1,this.date2)
    • System.DateTime.SubtractionInDays(this.date1,this.date2)
    • System.DateTime.SubtractionInYears(this.date1,this.date2)
    • System.DateTime.SubtractionInMonths(this.date1,this.date2)
    • System.DateTime.IsLeapYear(System.DateTime.Now())
  • System.Environment
    • System.Environment.CurrentDirectory ()
    • System.Environment.ExpandEnvironmentVariables (name)
    • System.Environment.GetEnvironmentVariable (variable)
    • System.Environment.UserName ()
  • 激活锁
    • ActiveLock.AngleLockEnabled()
    • ActiveLock.AnnotationScaleLockEnabled()
    • ActiveLock.AssociationLockEnabled()
    • ActiveLock.ConstructionPlaneLockEnabled()
    • ActiveLock.ConstructionSnapLockEnabled()
    • ActiveLock.GraphicGroupLockEnabled()
    • ActiveLock.GridLockEnabled()
    • ActiveLock.IsometricLockEnabled()
    • ActiveLock.LevelLockEnabled()
    • ActiveLock.PatternAssociationLockEnabled()
    • ActiveLock.SnapLockEnabled()
    • ActiveLock.TextNodeLockEnabled()
    • ActiveLock.UnitLockEnabled()
    • ActiveLock.ElementTemplateAssociationLockEnabled()
  • 激活视图
    • ActiveView.DisplayStyleName()
    • ActiveView.UseCamera()
    • ActiveView.ShowFill()
    • ActiveView.ShowACSTriad()
    • ActiveView.ShowBackground()
    • ActiveView.ShowBoundayDisplay()
    • ActiveView.UseClipBack()
    • ActiveView.UseClipFront()
    • ActiveView.UseClipVolume()
    • ActiveView.ShowConstructionClass()
    • ActiveView.ShowDimensionClass()
    • ActiveView.ShowDataFields()
    • ActiveView.UseDisplaySet()
    • ActiveView.ShowFastCells()
    • ActiveView.ShowFastCurves()
    • ActiveView.ShowGrid()
    • ActiveView.UseLevelOverrides()
    • ActiveView.ShowLineStyles()
    • ActiveView.ShowLineWeight()
    • ActiveView.ShowPatternBumpMaps()
    • ActiveView.UseDefaultLighting()
    • ActiveView.ShowTags()
    • ActiveView.ShowText()
    • ActiveView.ShowTextNodes()
    • ActiveView.ShowTransparency()
    • 激活模型
      • ActiveModel.Name
      • ActiveModel.Type
      • ActiveModel.IsActive
      • ActiveModel.Is3D
      • ActiveModel.TreatAs3D
      • ActiveModel.CellType
      • ActiveModel.Description
      • ActiveModel.DefaultRefLogical
      • ActiveModel.PropagateAnnotationScale
      • ActiveModel.AnnotationScale
      • ActiveModel.ModelId
      • ActiveModel.Hidden
      • ActiveModel.IsMarkup
      • ActiveModel.CanbePlacedAsCell
      • ActiveModel.IsMaster
      • ActiveModel.UpdateFieldsAutomatically
      • ActiveModel.CanbePlacedAsAnnotationCel
      • ActiveModel.LineStyleScale
      • ActiveModel.Format
      • ActiveModel.MasterUnit
      • ActiveModel.SubUnit
      • ActiveModel.Accuracy
      • ActiveModel.MasterUnitLabel
      • ActiveModel.SubUnitLabel
      • ActiveModel.GlobalLineStyleScaleFactor
      • ActiveModel.DesignScale
      • ActiveModel.PaperScale
      • ActiveModel.AngleReadoutFormat
      • ActiveModel.AngleReadoutAccuracy
      • ActiveModel.DirectionMode
      • ActiveModel.DirectionBase
      • ActiveModel.Direction
      • ActiveModel.GridLock
      • ActiveModel.GridMaster
      • ActiveModel.GridReference
      • ActiveModel.GridConfig
      • ActiveModel.GridAspect
      • ActiveModel.IsometricLock
      • ActiveModel.IsometricPlane
      • ActiveModel.ACSPlane
      • ActiveModel.Resolution
      • ActiveModel.WorkingArea
      • ActiveModel.SolidArea
      • ActiveModel.SolidAccuracy
    • ActiveView.UsesClipVolumeElement()
  • 全局原点
    • Coordinates.GlobalOrigin.GetX(this.GetElement().Origin)
    • Coordinates.GlobalOrigin.GetY(this.GetElement().Origin)
    • Coordinates.GlobalOrigin.Getz(this.GetElement().Origin)
    • Coordinates.GlobalOrigin.GetGlobalOrigin()

通过使用此表达式，可以在设计文件中定义和重定向全局原点的坐标。缺省设置文件 Origin 显示了缺省值。

  • GCS 表达式
    • GCS.GetLatitude(Point SelectedElement)
    • GCS.GetLongitude(Point SelectedElement)
    • GCS.GetElevation(Point SelectedElement)

可以通过在表达式字段中使用其中一个 GCS 表达式或使用表达式创建器来定义项类型属性。