Are there any T4 templates for generating C # classes from xsd?

Question

Are there any T4 templates for generating C # classes from xsd?

Answer 1

Not what I know, but take a look at LINQ to XSD ( http://linqtoxsd.codeplex.com/ ). You can use LinqToXsd.exe to create strongly typed classes based on your schema. And then you have full LINQ support. Very comfortably.

You can also set up a pre-build event in your project that looks something like this:

"$(ProjectDir)Lib/LinqToXsd/LinqToXsd.Exe" "$(ProjectDir)MySchema.xsd" /fileName:MySchema.cs

And this will generate classes from the schema right before your assembly, so if you change your schema, your classes will be synchronized with each assembly.

Answer 2

I just created a very simple one today that should do the trick.

 <#@ template debug="true" hostSpecific="true" #> <#@ Assembly Name="System.Core.dll" #> <#@ Assembly Name="System.Windows.Forms.dll" #> <#@ Assembly Name="System.Xml" #> <#@ Assembly Name="Microsoft.CSharp" #> <#@ output extension=".txt" #> <#@ import namespace="System" #> <#@ import namespace="System.IO" #> <#@ import namespace="System.Text" #> <#@ import namespace="System.Collections.Generic" #> <#@ import namespace="System.Reflection" #> <#@ import namespace="System.Xml" #> <#@ import namespace="System.Xml.Serialization" #> <#@ import namespace="System.Xml.Schema" #> <#@ import namespace="System.CodeDom" #> <#@ import namespace="System.CodeDom.Compiler" #> <#@ import namespace="Microsoft.CSharp" #> <# // directory of this template var outputDirectory = Path.GetDirectoryName(Host.TemplateFile); // iterate through each XSD file in our /Schema/ directory // and output the generated C# file in this directory. foreach(var file in new DirectoryInfo(Host.ResolvePath("Schemas")).GetFiles("*.xsd")) { // ouput file should be the directory of this template, with .Generated.cs var outputFile = Path.Combine(outputDirectory, file.Name.Replace(".xsd", ".Generated.cs")); // do it File.WriteAllText(outputFile, GenerateFromXsd(file.FullName)); } #> <#+ private string GenerateFromXsd(string xsdFileName) { // load the xsd XmlSchema xsd; using (FileStream stream = new FileStream(xsdFileName, FileMode.Open, FileAccess.Read)) { xsd = XmlSchema.Read(stream, null); } var xsds = new XmlSchemas(); xsds.Add(xsd); xsds.Compile(null, true); var schemaImporter = new XmlSchemaImporter(xsds); // create the codedom var codeNamespace = new CodeNamespace((string)System.Runtime.Remoting.Messaging.CallContext.LogicalGetData("NamespaceHint")); var codeExporter = new XmlCodeExporter(codeNamespace); var maps = new List<object>(); foreach (XmlSchemaType schemaType in xsd.SchemaTypes.Values) { maps.Add(schemaImporter.ImportSchemaType(schemaType.QualifiedName)); } foreach (XmlSchemaElement schemaElement in xsd.Elements.Values) { maps.Add(schemaImporter.ImportTypeMapping(schemaElement.QualifiedName)); } foreach (XmlTypeMapping map in maps) { codeExporter.ExportTypeMapping(map); } // Check for invalid characters in identifiers CodeGenerator.ValidateIdentifiers(codeNamespace); // output the C# code var codeProvider = new CSharpCodeProvider(); using (var writer = new StringWriter()) { codeProvider.GenerateCodeFromNamespace(codeNamespace, writer, new CodeGeneratorOptions()); return writer.GetStringBuilder().ToString(); } } #>