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DataTable.GetChanges Method

Gets a copy of the DataTable that contains all changes made to it since it was loaded or AcceptChanges was last called.

Namespace:  System.Data
Assembly:  System.Data (in System.Data.dll)

public DataTable GetChanges()

Return Value

Type: System.Data.DataTable
A copy of the changes from this DataTable, or null if no changes are found.

Creates a new DataSet containing a copy of all rows in the original DataSet that have pending changes. Relationship constraints can cause additional unchanged rows to be added to the new DataSet if the unchanged rows contain primary keys corresponding to foreign keys in the changed rows. The method returns null (Nothing in Visual Basic) if there are no rows in the original DataSet with pending changes.

private void UpdateDataTable(DataTable table, 
    OleDbDataAdapter myDataAdapter)
{
    DataTable xDataTable = table.GetChanges();

    // Check the DataTable for errors. 
    if (xDataTable.HasErrors)
    {
        // Insert code to resolve errors.
    }

    // After fixing errors, update the database with the DataAdapter 
    myDataAdapter.Update(xDataTable);
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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