When the edit control when bound to a DataTable, change the controls Text, DataRow's status should change, but DataTable.GetChanges () is null.
find source code:
has BeginEdit(), but not execute EndEdit().
if (this.mobjFieldInfo != null)
{
obj1 = this.bindingManager.Current;
if (obj1 is IEditableObject)
{
((IEditableObject)obj1).BeginEdit();
}
if (!this.mobjFieldInfo.IsReadOnly)
{
this.mobjFieldInfo.SetValue(obj1, objValue);
}
}