/// <summary>
/// 取得序列化后的字节
/// </summary>
/// <param name="ds"></param>
/// <returns></returns>
public static byte[] GetDataSetSurrogateZipBytes(DataTable dt)
{
DataTableSurrogate dss = new DataTableSurrogate(dt);
BinaryFormatter ser = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
ser.Serialize(ms, dss);
byte[] buffer = ms.ToArray();
byte[] zipBuffer = Compress(buffer);
return zipBuffer;
}
private ArrayList _relations; //An ArrayList of foreign key constraints : [relationName]->[parentTableIndex, parentcolumnIndexes]->[childTableIndex, childColumnIndexes]->[Nested]->[extendedProperties]
#endregion Fields
#region Constructors
/*
Constructs a DataSetSurrogate object from a DataSet.
*/
public DataSetSurrogate(DataSet ds)
{
if (ds == null)
{
throw new ArgumentNullException("The parameter dataset is null");
}
//DataSet properties
_datasetName = ds.DataSetName;
_namespace = ds.Namespace;
_prefix = ds.Prefix;
_caseSensitive = ds.CaseSensitive;
_locale = ds.Locale;
_enforceConstraints = ds.EnforceConstraints;
//Tables, Columns, Rows
_dataTableSurrogates = new DataTableSurrogate[ds.Tables.Count];
for (int i = 0; i < ds.Tables.Count; i++)
{
_dataTableSurrogates[i] = new DataTableSurrogate(ds.Tables[i]);
}
//ForeignKeyConstraints
_fkConstraints = GetForeignKeyConstraints(ds);
//Relations
_relations = GetRelations(ds);
//ExtendedProperties
_extendedProperties = new Hashtable();
if (ds.ExtendedProperties.Keys.Count > 0)
{
foreach (object propertyKey in ds.ExtendedProperties.Keys)
{
_extendedProperties.Add(propertyKey, ds.ExtendedProperties[propertyKey]);
}
}
}