public override global::System.Data.DataSet Clone()
{
libraryDataSet cln = ((libraryDataSet)(base.Clone()));
cln.InitVars();
cln.SchemaSerializationMode = this.SchemaSerializationMode;
return(cln);
}
public static global::System.Xml.Schema.XmlSchemaComplexType GetTypedDataSetSchema(global::System.Xml.Schema.XmlSchemaSet xs)
{
libraryDataSet ds = new libraryDataSet();
global::System.Xml.Schema.XmlSchemaComplexType type = new global::System.Xml.Schema.XmlSchemaComplexType();
global::System.Xml.Schema.XmlSchemaSequence sequence = new global::System.Xml.Schema.XmlSchemaSequence();
global::System.Xml.Schema.XmlSchemaAny any = new global::System.Xml.Schema.XmlSchemaAny();
any.Namespace = ds.Namespace;
sequence.Items.Add(any);
type.Particle = sequence;
global::System.Xml.Schema.XmlSchema dsSchema = ds.GetSchemaSerializable();
if (xs.Contains(dsSchema.TargetNamespace))
{
global::System.IO.MemoryStream s1 = new global::System.IO.MemoryStream();
global::System.IO.MemoryStream s2 = new global::System.IO.MemoryStream();
try {
global::System.Xml.Schema.XmlSchema schema = null;
dsSchema.Write(s1);
for (global::System.Collections.IEnumerator schemas = xs.Schemas(dsSchema.TargetNamespace).GetEnumerator(); schemas.MoveNext();)
{
schema = ((global::System.Xml.Schema.XmlSchema)(schemas.Current));
s2.SetLength(0);
schema.Write(s2);
if ((s1.Length == s2.Length))
{
s1.Position = 0;
s2.Position = 0;
for (; ((s1.Position != s1.Length) &&
(s1.ReadByte() == s2.ReadByte()));)
{
;
}
if ((s1.Position == s1.Length))
{
return(type);
}
}
}
}
finally {
if ((s1 != null))
{
s1.Close();
}
if ((s2 != null))
{
s2.Close();
}
}
}
xs.Add(dsSchema);
return(type);
}
public DataAccessLayer(SourceType dataType, string targetFile)
{
if (string.IsNullOrWhiteSpace(nameof(targetFile)))
{
throw new ArgumentException(nameof(targetFile));
}
_provider = new Provider.Provider();
_dataType = dataType;
_targetFile = targetFile;
_libraryDataSet = _provider.GetAllData(dataType, targetFile);
}
public libraryDataSet GetAllData(SourceType dataType, string targetFile)
{
_dataType = dataType;
_targetFile = targetFile;
if (dataType == SourceType.Xml)
{
try
{
_libraryDs = new libraryDataSet();
_libraryDs.ReadXml(targetFile);
_libraryDs.ReadXmlSchema(targetFile);
return(_libraryDs);
}
catch (Exception)
{
System.Windows.Forms.MessageBox.Show("An error occured. Restart application");
Application.ExitThread();
}
}
_libraryTables = new DataTable[]
{
_libraryDs.Items,
_libraryDs.Authors,
_libraryDs.Books,
_libraryDs.Borrows,
_libraryDs.Copies,
_libraryDs.Magazines,
_libraryDs.Articles,
_libraryDs.ArticlesInMagazines,
_libraryDs.Users
};
_tablesName = new[]
{
"Items", "Authors", "Books", "Borrows", "Copies",
"Magazines", "Articles", "ArticlesInMagazines", "Users"
};
_libraryDataAdapters = new SqlDataAdapter[_tablesName.Length];
for (int i = 0; i < _tablesName.Length; i++)
{
_libraryDataAdapters[i] = new SqlDataAdapter("Select * from " + _tablesName[i], targetFile);
new SqlCommandBuilder(_libraryDataAdapters[i]);
}
for (int i = 0; i < _tablesName.Length; i++)
{
_libraryDataAdapters[i].Fill(_libraryTables[i]);
}
return(_libraryDs);
}
