Gets a dictionary that contains the original non-key field name/value pairs for the updated record.
Syntax
Value
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Remarks
Use the FormViewUpdatedEventArgs.OldValues property to access the original non-key field values for the updated record. For example, you can use these values to keep a log of updated records. A data source control that supports conflict detection (optimistic concurrency checking), such as the System.Web.UI.WebControls.SqlDataSource and System.Web.UI.WebControls.ObjectDataSource controls, with its SqlDataSource.ConflictDetection property set to the ConflictOptions.CompareAllValues also compares these original values against the record in the database before an update operation is performed. If a record has been modified by another user concurrently, the record is not updated.
The FormViewUpdateEventArgs.OldValues property does not contain key fields. If you allow the user to update the values of the key fields, the original key field values are stored in the FormViewUpdateEventArgs.Keys property. The updated values are stored in the FormViewUpdateEventArgs.NewValues property.
The FormViewUpdatedEventArgs.NewValues property returns an System.Collections.Specialized.OrderedDictionary object that implements the System.Collections.Specialized.IOrderedDictionary interface. The System.Collections.Specialized.OrderedDictionary object contains DictionaryEntry objects that represent the fields of the updated record. To access the field names, use the System.Collections.Specialized.OrderedDictionary.Keys property of the System.Collections.Specialized.OrderedDictionary object. Similarly, you can access the field values by using the System.Collections.Specialized.OrderedDictionary.Values property.
As a shortcut, you can also use the indexer of the System.Collections.Specialized.OrderedDictionary object to access the field values directly. Data source controls that rely on the field order (such as System.Web.UI.WebControls.AccessDataSource) can access field values only by index.
Requirements
Assembly: System.Web (in System.Web.dll)
Assembly Versions: 2.0.0.0
Since: .NET 2.0