System.Data.DataSet.DetermineSchemaSerializationMode C# (CSharp) Method

        protected SchemaSerializationMode DetermineSchemaSerializationMode(XmlReader reader)
        {
            //Typed DataSet calls into this
            SchemaSerializationMode schemaSerializationMode = SchemaSerializationMode.IncludeSchema;
            reader.MoveToContent();
            if (reader.NodeType == XmlNodeType.Element)
            {
                if (reader.HasAttributes)
                {
                    string attribValue = reader.GetAttribute(Keywords.MSD_SCHEMASERIALIZATIONMODE, Keywords.MSDNS);
                    if (string.Equals(attribValue, Keywords.MSD_EXCLUDESCHEMA, StringComparison.OrdinalIgnoreCase))
                    {
                        schemaSerializationMode = SchemaSerializationMode.ExcludeSchema;
                    }
                    else if (string.Equals(attribValue, Keywords.MSD_INCLUDESCHEMA, StringComparison.OrdinalIgnoreCase))
                    {
                        schemaSerializationMode = SchemaSerializationMode.IncludeSchema;
                    }
                    else if (attribValue != null)
                    {
                        // if attrib does not exist, then don't throw
                        throw ExceptionBuilder.InvalidSchemaSerializationMode(typeof(SchemaSerializationMode), attribValue);
                    }
                }
            }
            return schemaSerializationMode;
        }