// Load a model from a project file
public void LoadTables(string filename)
{
SqlTableDefs = deserializeFromXmlString(
File.ReadAllText(filename),
typeof(SqlTableDefCollection)) as SqlTableDefCollection;
Dirty = false;
}
// Create new empty model
public void NewTableDefs()
{
SqlTableDefs = new SqlTableDefCollection();
SqlTableDefs.Add(new SqlTableDef());
Dirty = false;
}