Namespace:
System.Data
Assembly:
System.Data (in System.Data.dll)
Visual Basic (Declaration)
Public Function GetChanges ( _
rowStates As DataRowState _
) As DataTable
Dim instance As DataTable
Dim rowStates As DataRowState
Dim returnValue As DataTable
returnValue = instance.GetChanges(rowStates)
public DataTable GetChanges(
DataRowState rowStates
)
public:
DataTable^ GetChanges(
DataRowState rowStates
)
public function GetChanges(
rowStates : DataRowState
) : DataTable
Return Value
Type:
System.Data..::.DataTableA filtered copy of the DataTable that can have actions performed on it, and later be merged back in the DataTable using Merge. If no rows of the desired DataRowState are found, the method returns nullNothingnullptra null reference (Nothing in Visual Basic).
The GetChanges method is used to produce a second DataTable object that contains only the changes introduced into the original. Use the rowStates argument to specify the type of changes the new object should include.
Relationship constraints may cause unchanged parent rows to be included.
Private Sub ProcessDeletes(table As DataTable, _
adapter As OleDbDataAdapter)
Dim changeTable As DataTable = table.GetChanges(DataRowState.Deleted)
' Check the DataTable for errors.
If table.HasErrors Then
' Insert code to resolve errors.
End If
' After fixing errors, update the database with the DataAdapter
adapter.Update(changeTable)
End Sub
private void ProcessDeletes(DataTable table,
OleDbDataAdapter adapter)
{
DataTable changeTable = table.GetChanges(DataRowState.Deleted);
// Check the DataTable for errors.
if (changeTable.HasErrors)
{
// Insert code to resolve errors.
}
// After fixing errors, update the database with the DataAdapter
adapter.Update(changeTable);
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
.NET Compact Framework
Supported in: 3.5, 2.0
XNA Framework
Supported in: 3.0, 2.0, 1.0
Reference
Other Resources