PISystem.FileAllowedExtensions Property
- Last UpdatedJan 12, 2026
- 2 minute read
- PI System
- AF SDK 3.2.0
- Developer
The list of valid file extensions for an AFFile.
Namespace: OSIsoft.AF
Assembly: OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.2.0.7
Syntax
public IList<string> FileAllowedExtensions { get; }
Public ReadOnly Property FileAllowedExtensions As IList(Of String) Get Dim instance As PISystem Dim value As IList(Of String) value = instance.FileAllowedExtensions
public: property IList<String^>^ FileAllowedExtensions { IList<String^>^ get (); }
member FileAllowedExtensions : IList<string> with get
Property Value
Type: IListStringReturns the list of valid file extensions for an AFFile. If this returns an empty list, then all file extensions are allowed.
Remarks
This list can be used to validate user input when uploading files to the PISystem.
This validation settings can be modified using the SetFileOptions(PISystem, IListString, Int32) method
or using the AFDiag utility.
To disable all files, set the FileMaxLength to zero.