/// <summary>
/// Primary constructor procedure.
/// </summary>
/// <param name="ConnectionString">database connection string.</param>
public DataStructure(string ConnectionString)
{
// assign data ..
if (ConnectionString != null && ConnectionString != string.Empty)
{
// create connection string instance ..
DataBaseObject.DataConnectionString = ConnectionString;
this.SqlConnectString = ConnectionString;
// get base data schema ..
this.MemoryDataBase = DataBaseObject.GetDataBaseSchema();
// get base data ..
DataBaseObject.GetDataBaseContent(ref this.MemoryDataBase);//？？？？？？？？？？？？？？？？？？
}
}