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copied!<p>Writing something like this is actually relatively simple using CodeDom:</p> <pre><code>class CSharpSerializer { private readonly Dictionary<string, int> m_locals = new Dictionary<string, int>(); private readonly List<CodeStatement> m_statements = new List<CodeStatement>(); private string GetVariableName(string suggestedName) { suggestedName = suggestedName.TrimEnd("0123456789".ToCharArray()); int n; if (m_locals.TryGetValue(suggestedName, out n)) { n++; m_locals[suggestedName] = n; return suggestedName + n; } m_locals[suggestedName] = 1; return suggestedName; } public string SerializeObject(object obj) { m_statements.Clear(); // dynamic used to make the code simpler GetExpression((dynamic)obj); var compiler = new CSharpCodeProvider(); var writer = new StringWriter(); foreach (var statement in m_statements) { compiler.GenerateCodeFromStatement( statement, writer, new CodeGeneratorOptions()); } return writer.ToString(); } private static CodeExpression GetExpression(int i) { return new CodePrimitiveExpression(i); } private static CodeExpression GetExpression(string s) { return new CodePrimitiveExpression(s); } private static CodeExpression GetExpression(DateTime dateTime) { // TODO: handle culture and milliseconds return new CodeMethodInvokeExpression( new CodeTypeReferenceExpression(typeof(Convert)), "ToDateTime", new CodePrimitiveExpression(Convert.ToString(dateTime))); } // and so on for other primitive types // and types that require special handling (including arrays) private CodeExpression GetExpression(object obj) { if (obj == null) return new CodePrimitiveExpression(null); var type = obj.GetType(); string typeName = type.Name; string variable = GetVariableName( typeName[0].ToString().ToLower() + typeName.Substring(1)); m_statements.Add( new CodeVariableDeclarationStatement( typeName, variable, new CodeObjectCreateExpression(typeName))); foreach (var property in type.GetProperties( BindingFlags.Public | BindingFlags.Instance)) { var expression = GetExpression((dynamic)property.GetValue(obj)); m_statements.Add( new CodeAssignStatement( new CodePropertyReferenceExpression( new CodeVariableReferenceExpression(variable), property.Name), expression)); } return new CodeVariableReferenceExpression(variable); } } </code></pre> <p>There are many cases where this code will fail, but for well-behaved types (public default constructor, all public instance properties have setters, no important state hidden in fields or non-public properties, no cyclic references, no namespace collisions, etc.), it will work.</p>

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