DataSet.HasChanges Method (DataRowState)
.NET Framework (current version)
Gets a value indicating whether the DataSet has changes, including new, deleted, or modified rows, filtered by DataRowState.
Assembly: System.Data (in System.Data.dll)
Parameters
- rowStates
-
Type:
System.Data.DataRowState
One of the DataRowState values.
Examine the HasChanges property of the DataSet before invoking the GetChanges method.
The following example uses the GetChanges method to create a second DataSet object, which is then used to update a data source.
Private Sub UpdateDataSet(ByVal dataSet As DataSet) ' Check for changes with the HasChanges method first. If Not dataSet.HasChanges(DataRowState.Modified) Then Exit Sub End If ' Create temporary DataSet variable and ' GetChanges for modified rows only. Dim tempDataSet As DataSet = _ dataSet.GetChanges(DataRowState.Modified) ' Check the DataSet for errors. If tempDataSet.HasErrors Then ' Insert code to resolve errors. End If ' After fixing errors, update the data source with ' the DataAdapter used to create the DataSet. adapter.Update(tempDataSet) End Sub
.NET Framework
Available since 1.1
Available since 1.1
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