protected virtual DataSet LoadFromFile()
{
if (m_FileName == null)
{
throw new ApplicationException("FileName is null");
}
System.Xml.XmlDocument xmlDoc = new System.Xml.XmlDocument();
xmlDoc.Load(m_FileName);
System.Xml.XmlNamespaceManager namespaceMan = new System.Xml.XmlNamespaceManager(xmlDoc.NameTable);
namespaceMan.AddNamespace("fileds", c_DataNamespace);
System.Xml.XmlNode tmp = xmlDoc.DocumentElement.SelectSingleNode("fileds:header", namespaceMan);
if (tmp == null)
{
throw new ApplicationException("File header not found");
}
System.Xml.XmlElement header = (System.Xml.XmlElement)tmp;
//File Version
string strFileVersion = header.GetAttribute(c_FileVersion);
int fileVersion = int.Parse(strFileVersion);
if (fileVersion == c_FileVersionNumber)
{
string strDataFormat = header.GetAttribute(c_DataFormat);
mFileDataFormat = (StreamDataSetFormat)int.Parse(strDataFormat);
}
else if (fileVersion == 0)
{
mFileDataFormat = StreamDataSetFormat.XML;
}
else if (fileVersion > c_FileVersionNumber)
{
throw new ApplicationException("File Version not supported, expected: " + c_FileVersionNumber.ToString());
}
//Data Version
string strDataVersion = header.GetAttribute(c_DataVersion);
int dataVersion = int.Parse(strDataVersion);
DataSet dataSet = CreateData(dataVersion);
//Data
tmp = xmlDoc.DocumentElement.SelectSingleNode("fileds:data", namespaceMan);
if (tmp == null)
{
throw new ApplicationException("File data not found");
}
System.Xml.XmlElement xmlDataNode = (System.Xml.XmlElement)tmp;
byte[] xmlBuffer = System.Convert.FromBase64String(xmlDataNode.InnerText);
using (System.IO.MemoryStream memStream = new System.IO.MemoryStream(xmlBuffer))
{
StreamDataSet.Read(memStream, dataSet, mFileDataFormat, MergeReadedSchema);
//dataSet.ReadXml(memStream);
}
return(dataSet);
}
/// <summary>
/// Read from the stream and populate the dataset using the specified format.
/// </summary>
/// <param name="source"></param>
/// <param name="destination"></param>
/// <param name="format"></param>
/// <param name="mergeSchema">True to merge the schema, otherwise it is used the schema of the dataset</param>
public static void Read(System.IO.Stream source, System.Data.DataSet destination, StreamDataSetFormat format, bool mergeSchema)
{
bool oldEnforce = destination.EnforceConstraints;
destination.EnforceConstraints = false;
try
{
switch (format)
{
case StreamDataSetFormat.XML:
if (mergeSchema)
destination.ReadXml(source, System.Data.XmlReadMode.ReadSchema);
else
destination.ReadXml(source, System.Data.XmlReadMode.IgnoreSchema);
break;
case StreamDataSetFormat.Binary:
BinReadDataSetFromStream(source, destination, mergeSchema);
break;
default:
throw new ApplicationException("StreamDataSet Format not supported");
}
}
finally
{
destination.EnforceConstraints = oldEnforce;
}
}
/// <summary>
/// Write the dataset to the stream using the specified format.
/// </summary>
/// <param name="destination"></param>
/// <param name="source"></param>
/// <param name="format"></param>
public static void Write(System.IO.Stream destination, System.Data.DataSet source, StreamDataSetFormat format)
{
switch (format)
{
case StreamDataSetFormat.XML:
source.WriteXml(destination, System.Data.XmlWriteMode.WriteSchema);
break;
case StreamDataSetFormat.Binary:
BinWriteDataSetToStream(destination, source);
break;
default:
throw new ApplicationException("StreamDataSet Format not supported");
}
}
/// <summary>
/// Read from the stream and populate the dataset using the specified format.
/// </summary>
/// <param name="source"></param>
/// <param name="destination"></param>
/// <param name="format"></param>
/// <param name="mergeSchema">True to merge the schema, otherwise it is used the schema of the dataset</param>
public static void Read(System.IO.Stream source, System.Data.DataSet destination, StreamDataSetFormat format, bool mergeSchema)
{
bool oldEnforce = destination.EnforceConstraints;
destination.EnforceConstraints = false;
try
{
switch (format)
{
case StreamDataSetFormat.XML:
if (mergeSchema)
{
destination.ReadXml(source, System.Data.XmlReadMode.ReadSchema);
}
else
{
destination.ReadXml(source, System.Data.XmlReadMode.IgnoreSchema);
}
break;
case StreamDataSetFormat.Binary:
BinReadDataSetFromStream(source, destination, mergeSchema);
break;
default:
throw new ApplicationException("StreamDataSet Format not supported");
}
}
finally
{
destination.EnforceConstraints = oldEnforce;
}
}
/// <summary>
/// Write the dataset to the stream using the specified format.
/// </summary>
/// <param name="destination"></param>
/// <param name="source"></param>
/// <param name="format"></param>
public static void Write(System.IO.Stream destination, System.Data.DataSet source, StreamDataSetFormat format)
{
switch (format)
{
case StreamDataSetFormat.XML:
source.WriteXml(destination, System.Data.XmlWriteMode.WriteSchema);
break;
case StreamDataSetFormat.Binary:
BinWriteDataSetToStream(destination, source);
break;
default:
throw new ApplicationException("StreamDataSet Format not supported");
}
}
protected virtual DataSet LoadFromFile()
{
if (m_FileName == null)
throw new ApplicationException("FileName is null");
System.Xml.XmlDocument xmlDoc = new System.Xml.XmlDocument();
xmlDoc.Load(m_FileName);
System.Xml.XmlNamespaceManager namespaceMan = new System.Xml.XmlNamespaceManager(xmlDoc.NameTable);
namespaceMan.AddNamespace("fileds", c_DataNamespace);
System.Xml.XmlNode tmp = xmlDoc.DocumentElement.SelectSingleNode("fileds:header", namespaceMan);
if (tmp == null)
throw new ApplicationException("File header not found");
System.Xml.XmlElement header = (System.Xml.XmlElement)tmp;
//File Version
string strFileVersion = header.GetAttribute(c_FileVersion);
int fileVersion = int.Parse( strFileVersion );
if (fileVersion == c_FileVersionNumber)
{
string strDataFormat = header.GetAttribute(c_DataFormat);
mFileDataFormat = (StreamDataSetFormat)int.Parse(strDataFormat);
}
else if (fileVersion == 0)
{
mFileDataFormat = StreamDataSetFormat.XML;
}
else if (fileVersion > c_FileVersionNumber)
throw new ApplicationException("File Version not supported, expected: " + c_FileVersionNumber.ToString());
//Data Version
string strDataVersion = header.GetAttribute(c_DataVersion);
int dataVersion = int.Parse( strDataVersion );
DataSet dataSet = CreateData(dataVersion);
//Data
tmp = xmlDoc.DocumentElement.SelectSingleNode("fileds:data", namespaceMan);
if (tmp == null)
throw new ApplicationException("File data not found");
System.Xml.XmlElement xmlDataNode = (System.Xml.XmlElement)tmp;
byte[] xmlBuffer = System.Convert.FromBase64String( xmlDataNode.InnerText );
using (System.IO.MemoryStream memStream = new System.IO.MemoryStream(xmlBuffer))
{
StreamDataSet.Read(memStream, dataSet, mFileDataFormat, MergeReadedSchema);
//dataSet.ReadXml(memStream);
}
return dataSet;
}
