Include schema information in a DataSet’s DiffGram

Include schema information in a DataSet’s DiffGram

In the .NET Framework, the DataSet’s WriteXml method when used to create a DiffGram does not provide the capability to include schema information along with the data. This is more of a design choice than an objective difficulty, though. When you return a DataSet object from a Web service method your clients receive a special flavor of DiffGram object made of schema and data. The output is shown here:

   ...      ...

Technically speaking, the Web service serialization of a DataSet object is not obtained through WriteXml and the final output is not a true DiffGram, but rather a new XML format that incorporates a DiffGram. Such a new format is not produced by WriteXml but comes care of the XML serializer–the XmlSerializer class. The following code shows how to serialize a DataSet object to obtain a DiffGram with schema.

Dim sw As StreamWriter = New StreamWriter(fileName)Dim writer As XmlTextWriter = New XmlTextWriter(sw)writer.Formatting = Formatting.IndentedDim ds As DataSet = InitializeTheDataSet()Dim ser As XmlSerializer = New XmlSerializer(GetType(DataSet))ser.Serialize(writer, ds)

It should be clear by now that you need the XML deserializer to read this new breed of DiffGram. The code is the following:

Dim ser As XmlSerializer = New XmlSerializer(GetType(DataSet))Dim ds As DataSet = CType(ser.Deserialize(writer, ds), DataSet)

Source: Applied XML Programming for Microsoft .NET, Dino Esposito, Microsoft Press 2002

Share the Post:
XDR solutions

The Benefits of Using XDR Solutions

May 24, 2023

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved

AI is revolutionizing fraud detection

How AI is Revolutionizing Fraud Detection

May 23, 2023

Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across

AI innovation

Companies Leading AI Innovation in 2023

May 22, 2023

Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several

data fivetran pricing

Fivetran Pricing Explained

May 17, 2023

One of the biggest trends of the 21st century is the massive surge in analytics. Analytics is the process of utilizing data to drive future decision-making. With so much of

kubernetes logging

Kubernetes Logging: What You Need to Know

May 16, 2023

Kubernetes from Google is one of the most popular open-source and free container management solutions made to make managing and deploying applications easier. It has a solid architecture that makes

ransomware cyber attack

Why Is Ransomware Such a Major Threat?

May 15, 2023

One of the most significant cyber threats faced by modern organizations is a ransomware attack. Ransomware attacks have grown in both sophistication and frequency over the past few years, forcing

data dictionary

Tools You Need to Make a Data Dictionary

May 12, 2023

Data dictionaries are crucial for organizations of all sizes that deal with large amounts of data. they are centralized repositories of all the data in organizations, including metadata such as

Show More