CODEWITHSUNDEEP
c#xmlxsd
Sal-laS
Sal-laS

Reputation: 11649

Defining XML file without its Schema

I believed that we create XML's Schemas to define the XML elements and its structure. I thought, we must define the XSD before we create a XML file. In other word, xml file without its xsd is meaningless.

Today I run this code, 

   XmlWriter XmlWriter = XmlWriter.Create("Test.xml");

            XmlWriter.WriteStartDocument();

            XmlWriter.WriteStartElement("Users");
            XmlWriter.WriteStartElement("User");
            XmlWriter.WriteStartAttribute("Salman", "24");

            XmlWriter.WriteString("Salman");

            XmlWriter.WriteEndElement();
            XmlWriter.WriteEndDocument();
            XmlWriter.Close();

When I find my output, there was not any XSD file. Only Test.xml. So my question is:

What is the exact role of XSD files?

If I were right, why doesn't the C# generate the output?

Upvotes: 0

Views: 413

Answers (1)

Martin Noreke
Martin Noreke

Reputation: 4146

XSDs are used for validation of XML files, but are optional and not required. If you are writing / reading from the same application, and you control all access to the XML file with error/exception handling for when things don't work, you don't need the XSD.

When passing data between applications, the XSD serves as the contract that ensures both parties understand and agree on the format of the XML file being passed.

Upvotes: 3

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