using System;using System.Collections.Generic;using System.Text;using System.XML.Serialization.Advanced;using System.Collections;using System.XML.Schema;using System.XML.Serialization;using System.CodeDom;using System.CodeDom.Compiler;using System.XML;using System.Data;namespace Xrinehart.Tools.WebService.SchemaImporter
{
class DataTableSchemaImporterExtension : SchemaImporterExtension
{ // DataTableSchemaImporterExtension is used for WebServices, it is used to recognize the schema for DataTable within wsdl Hashtable importedTypes = new Hashtable(); public override string ImportSchemaType(string name, string schemaNamespace, XMLSchemaObject context, XMLSchemas schemas, XMLSchemaImporter importer, CodeCompileUnit compileUnit, CodeNamespace mainNamespace, CodeGenerationOptions options, CodeDomProvider codeProvider) { IList values = schemas.GetSchemas(schemaNamespace); if (values.Count != 1) { return null;
} XMLSchema schema = values[0] as XMLSchema; if (schema == null) return null; XMLSchemaType type = (XMLSchemaType)schema.SchemaTypes[new XMLQualifiedName(name, schemaNamespace)]; return ImportSchemaType(type, context, schemas, importer, compileUnit, mainNamespace, options, codeProvider); } public override string ImportSchemaType(XMLSchemaType type, XMLSchemaObject context, XMLSchemas schemas, XMLSchemaImporter importer, CodeCompileUnit compileUnit, CodeNamespace mainNamespace, CodeGenerationOptions options, CodeDomProvider codeProvider) { if (type == null) { return null; } if (importedTypes[type] != null) { mainNamespace.Imports.Add(new CodeNamespaceImport(typeof(DataSet).Namespace)); compileUnit.ReferencedAssemblies.Add("System.Data.dll"); return (string)importedTypes[type]; } if (!(context is XMLSchemaElement)) return null; if (type is XMLSchemaComplexType) { XMLSchemaComplexType ct = (XMLSchemaComplexType)type; if (ct.Particle is XMLSchemaSequence) { XMLSchemaObjectCollection items = ((XMLSchemaSequence)ct.Particle).Items; if (items.Count == 2 && items[0] is XMLSchemaAny && items[1] is XMLSchemaAny) { XMLSchemaAny any0 = (XMLSchemaAny)items[0]; XMLSchemaAny any1 = (XMLSchemaAny)items[1]; if (any0.Namespace == XMLSchema.Namespace && any1.Namespace == "urn:schemas-microsoft-com:XML-diffgram-v1") { string typeName = typeof(DataTable).FullName; importedTypes.Add(type, typeName); mainNamespace.Imports.Add(new CodeNamespaceImport(typeof(DataTable).Namespace)); compileUnit.ReferencedAssemblies.Add("System.Data.dll"); return typeName; } } } } return null; } }
} <sectionGroup name="system.XML.serialization" type="System.XML.Serialization.Configuration.SerializationSectionGroup, System.XML, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <section name="schemaImporterExtensions" type="System.XML.Serialization.Configuration.SchemaImporterExtensionsSection, System.XML, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> <section name="dateTimeSerialization" type="System.XML.Serialization.Configuration.DateTimeSerializationSection, System.XML, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> <section name="XMLSerializer" type="System.XML.Serialization.Configuration.XMLSerializerSection, System.XML, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /> </sectionGroup> <system.XML.serialization> <schemaImporterExtensions> <add name="dataTableSchemaImporterExtension" type="Xrinehart.Tools.WebService.SchemaImporter.DataTableSchemaImporterExtension, Xrinehart.Tools.WebService.SchemaImporter,Version=1.0.0.0,Culture=neutral,PublicKeyToken=5a627ce15fb94702" /> </schemaImporterExtensions> </system.XML.serialization>
完成以上的步骤后，再编译WebService，重新引用（或者更新Web引用），就可以正确的识别DataTable类型了。
其实DataTable只实现了序列化，但WebService并不能自己反序列化为可识别的格式，所以需要自己手动增加。由此可以衍生为各种业务实体BussinessEntity类对象也可以通过以上方式实现直接传递。
希望对大家有所帮助。
