DiffGrams for .NET Core. We are upgrading our project to .NET Core 3.x so need to find the DiffGrams used in the previous version of .NET - asp.net-core

Question

We are upgrading our .NET 2.0 application to .NET Core 3.x there's a DiffGrams used to capture the Table field updates (before/after values) used for Auditing purpose. I have to achieve the similar in the .NET Core 3.x. I am not sure which one is the equivalent for .NET Core 3.x.
Could you anyone help me guide on this? Thank you.

Answer 1

DataSet.WriteXml/DataSet.ReadXml method applies to .NET Core 3.x.
The WriteXml method provides a way to write either data only, or both data and schema from a DataSet into an XML document.
private void WriteXmlToFile(DataSet thisDataSet)
{
if (thisDataSet == null) { return; }
// Create a file name to write to.
string filename = "XmlDoc.xml";
// Create the FileStream to write with.
System.IO.FileStream stream = new System.IO.FileStream
(filename, System.IO.FileMode.Create);
// Create an XmlTextWriter with the fileStream.
System.Xml.XmlTextWriter xmlWriter =
new System.Xml.XmlTextWriter(stream,
System.Text.Encoding.Unicode);
// Write to the file with the WriteXml method.
thisDataSet.WriteXml(xmlWriter, XmlWriteMode.DiffGram);
xmlWriter.Close();
}
The resultant XML code is rooted in the <diffgr:diffgram> node and contains up to three distinct data sections, as follows:
<diffgr:diffgram>
<MyDataSet>
:
</MyDataSet>
<diffgr:before>
:
</diffgr:before>
<diffgr:errors>
:
</diffgr:errors>
</diffgr:diffgram>