AFAdjustments Class
- Last UpdatedNov 18, 2025
- 9 minute read
- PI System
- AF SDK 2024 R2
- Developer
This is a collection of AFAdjustment objects made to
an AFAttribute value used during the run of a case.

Inheritance Hierarchy
SystemObject
OSIsoft.AFAFCollection
OSIsoft.AFAFCollectionAFAdjustment
OSIsoft.AF.AnalysisAFAdjustments
OSIsoft.AFAFCollection
OSIsoft.AFAFCollectionAFAdjustment
OSIsoft.AF.AnalysisAFAdjustments
Namespace: OSIsoft.AF.Analysis
Assembly: OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182
Syntax
public sealed class AFAdjustments : AFCollection<AFAdjustment>
Public NotInheritable Class AFAdjustments Inherits AFCollection(Of AFAdjustment) Dim instance As AFAdjustments
public ref class AFAdjustments sealed : public AFCollection<AFAdjustment^>
[<SealedAttribute>] type AFAdjustments = class inherit AFCollection<AFAdjustment> end
The AFAdjustments type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
| Case |
This property returns the AFCase object which contains the
adjustment.
| |
| Count |
Gets the number of items actually contained in the collection.
(Inherited from AFCollectionT.) | |
| Database |
This read-only property returns the AFDatabase where this object is defined.
| |
| Identity |
This read-only property contains identity of the object.
(Inherited from AFCollection.) | |
| IsDeleted |
This read-only property indicates whether the owner of the collection has been deleted.
(Inherited from AFCollection.) | |
| ItemGuid | Returns the item in the collection associated with the passed in ID. (Inherited from AFCollectionT.) | |
| ItemInt32 | Returns the item located at the passed in index. (Inherited from AFCollectionT.) | |
| ItemIdentity |
This read-only property specifies the identity of the objects within the collection.
(Inherited from AFCollection.) | |
| PISystem |
This read-only property allows access to the PISystem
associated with this collection.
(Inherited from AFCollection.) | |
| Result |
This property returns the AFResult object which owns the
adjustment.
|
Methods
| Name | Description | |
|---|---|---|
| Add(T) |
Adds an object to the end of the collection.
(Inherited from AFCollectionT.) | |
| Add(String, String, Object, UOM) |
The Add method creates a new adjustment to the value of an attribute
within the context of an AFCase object and adds the
adjustment to the collection.
| |
| Clear |
Removes all items from the collection.
(Inherited from AFCollectionT.) | |
| Clear(String, String) |
The Clear method does not delete any previous adjustments to the value of an attribute, it
clears the adjustment so that it does not have any effect on the attribute value.
| |
| Contains(Guid) |
This method determines whether the collection contains a specific item referenced by id.
(Inherited from AFCollectionT.) | |
| Contains(T) |
This method determines whether the collection contains a specific item.
(Inherited from AFCollectionT.) | |
| CopyTo |
Copies the entire collection to a compatible one-dimensional Array,
starting at the specified index of the target array.
(Inherited from AFCollectionT.) | |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) | |
| GetEnumerator |
Returns an enumerator that iterates through the collection.
(Inherited from AFCollectionT.) | |
| GetHashCode |
Gets the hash code for this instance of the object which is suitable for use in hashing
algorithms and data structures like a hash table.
(Inherited from AFCollection.) | |
| GetType | Gets the Type of the current instance. (Inherited from Object.) | |
| IndexOf |
Searches for the specified object and returns the zero-based index of the first
occurrence within the entire collection.
(Inherited from AFCollectionT.) | |
| Remove(Guid) |
Removes the item with the specified id from the collection.
(Inherited from AFCollectionT.) | |
| Remove(T) |
Removes the first occurrence of a specific object from the collection.
(Inherited from AFCollectionT.) | |
| RemoveAt |
Removes the item at the specified index of the collection.
(Inherited from AFCollectionT.) | |
| Sort |
Sorts the items in the entire collection using the default comparer.
(Inherited from AFCollectionT.) | |
| Sort(IComparerT) |
Sorts the items in the entire collection using the specified comparer.
(Inherited from AFCollectionT.) | |
| Sort(Int32, Int32, IComparerT) |
Sorts the items in a range of items in the collection using the specified comparer.
(Inherited from AFCollectionT.) | |
| ToString |
Returns a String that represents the current object.
(Inherited from AFCollection.) |
Remarks
This collection is maintained by the AFCase. Use the
Add(String, String, Object, UOM) method to add a new adjustment to the collection.
Adjustments affect the value returned from the
AFAttribute.GetValue Overload
methods when called with the AFCase object as a context.
Examples
// This example shows how to create an adjustment to an attribute value made during a case run. // Note: This example assumes that there is a database called "Chocolate Milk Tutorial" // with a Model named "ChocolateMilkModel", with a Model Analysis named "Volume Balance" // The model also contains a "MilkTank1" child Element with a "Volume" Attribute // Get the Database PISystems myPISystems = new PISystems(); AFDatabase myDB = myPISystems.DefaultPISystem.Databases["Chocolate Milk Tutorial"]; // Get the Model Analysis AFAnalysis myAnalysis = AFAnalysis.FindAnalyses(myDB, "ChocolateMilkModel::Volume Balance", AFSearchField.Name, AFSortField.Name, AFSortOrder.Ascending, 1)[0]; // Create a Case and Collect Inputs AFCase myCase = myAnalysis.AddCase(); myCase.CollectInputs(); // Create an Adjustment AFResult myResult = myCase.Results[myDB.Elements["MilkTank1"].Attributes["Volume"]]; myResult.Adjustments.Add("This is the creator.", "This is a comment.", "2 US gal", null); myDB.CheckIn(); // Display each Adjustment before clear method Console.WriteLine("Adjustment Count = {0}", myResult.Adjustments.Count); foreach (AFAdjustment CurAdjustment in myResult.Adjustments) { Console.WriteLine("Before Clear Method:"); AFElement ownerElement = CurAdjustment.Attribute.Element as AFElement; if (ownerElement != null) Console.WriteLine(" Element of Adjustment = {0}", ownerElement.Name); Console.WriteLine(" Attribute of Element Adjusted = {0}", CurAdjustment.Attribute.Name); Console.WriteLine(" Adjusted Value = {0}", CurAdjustment.AdjustedValue); Console.WriteLine(" Previous Value = {0}", CurAdjustment.PreviousValue); } // Call the clear method on the collection to clear the non-committed Adjustment values myResult.Adjustments.Clear("This is the creator.", "This is the comment."); // Display each Adjustment after clear method Console.WriteLine("Adjustment Count = {0}", myResult.Adjustments.Count); foreach (AFAdjustment CurAdjustment in myResult.Adjustments) { Console.WriteLine("After Clear Method:"); Console.WriteLine(" Element of Adjustment = {0}", CurAdjustment.Attribute.Element.Name); Console.WriteLine(" Attribute of Element Adjusted = {0}", CurAdjustment.Attribute.Name); if (CurAdjustment.AdjustedValue == null) Console.WriteLine(" Adjusted Value = <null>"); else Console.WriteLine(" Adjusted Value = {0}", CurAdjustment.AdjustedValue); if (CurAdjustment.PreviousValue == null) Console.WriteLine(" Previous Value = <null>"); else Console.WriteLine(" Previous Value = {0}", CurAdjustment.PreviousValue); }
' This example shows how to create an adjustment to an attribute value made during a case run. ' Note: This example assumes that there is a database called "Chocolate Milk Tutorial" ' with a Model named "ChocolateMilkModel", with a Model Analysis named "Volume Balance" ' The model also contains a "MilkTank1" child Element with a "Volume" Attribute ' Get the Database Dim myPISystems As New PISystems Dim myDB As AFDatabase = myPISystems.DefaultPISystem.Databases("Chocolate Milk Tutorial") ' Get the Model Analysis Dim myAnalysis As AFAnalysis = AFAnalysis.FindAnalyses(myDB, "ChocolateMilkModel::Volume Balance", AFSearchField.Name, AFSortField.Name, AFSortOrder.Descending, 1)(0) ' Create a Case and Collect Inputs Dim myCase As AFCase = myAnalysis.AddCase myCase.CollectInputs() ' Create an Adjustment Dim myResult As AFResult = myCase.Results(myDB.Elements("MilkTank1").Attributes("Volume")) Dim CurAdjustment As AFAdjustment = myResult.Adjustments.Add("This is the creator.", "This is a comment.", "2 US gal", Nothing) myDB.CheckIn() ' Display each Adjustment before clear method Console.WriteLine("Adjustment Count = {0}", myResult.Adjustments.Count) For Each CurAdjustment In myResult.Adjustments Console.WriteLine("Before Clear Method:") Dim ownerElement As AFElement = CType(CurAdjustment.Attribute.Element, AFElement) If (ownerElement <> Nothing) Then Console.WriteLine(" Element of Adjustment = {0}", ownerElement.Name) End If Console.WriteLine(" Attribute of Element Adjusted = {0}", CurAdjustment.Attribute.Name) Console.WriteLine(" Adjusted Value = {0}", CurAdjustment.AdjustedValue) Console.WriteLine(" Previous Value = {0}", CurAdjustment.PreviousValue) Next CurAdjustment ' Call the clear method on the collection to clear the non-committed Adjustment values myResult.Adjustments.Clear("This is the creator.", "This is the comment.") ' Display each Adjustment after clear method Console.WriteLine("Adjustment Count = {0}", myResult.Adjustments.Count) For Each CurAdjustment In myResult.Adjustments Console.WriteLine("After Clear Method:") Console.WriteLine(" Element of Adjustment = {0}", CurAdjustment.Attribute.Element.Name) Console.WriteLine(" Attribute of Element Adjusted = {0}", CurAdjustment.Attribute.Name) If CurAdjustment.AdjustedValue Is Nothing Then Console.WriteLine(" Adjusted Value = <null>") Else Console.WriteLine(" Adjusted Value = {0}", CurAdjustment.AdjustedValue) End If If CurAdjustment.PreviousValue Is Nothing Then Console.WriteLine(" Previous Value = <null>") Else Console.WriteLine(" Previous Value = {0}", CurAdjustment.PreviousValue) End If Next CurAdjustment
No code example is currently available or this language may not be supported.
No code example is currently available or this language may not be supported.