我一直在尝试将新list items with attachments添加到我的列表中。
列表项添加正常，但我无法弄清楚如何将文件附加到这些项
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ConsoleApplication3.TestReference;
using System.IO;
namespace ConsoleApplication3
{
class Program
{
static void Main(string[] args)
{
MVSDataContext dc = new MVSDataContext(
new Uri("https:xxx_vti_bin/ListData.svc"));
dc.Credentials = System.Net.CredentialCache.DefaultCredentials;
TestListItem newItem = new TestListItem { Title = "test6" };
dc.AddToTestList(newItem);
dc.SaveChanges();
/* up to this point everything works fine and i am able to add a new list item */
FileStream fStream = File.OpenRead("C:\\xxxxx.xlsx");
string fileName = fStream.Name.Substring(3);
byte[] contents = new byte[fStream.Length];
fStream.Read(contents, 0, (int)fStream.Length);
fStream.Close();
/* the file read successfuly . Now I should use `contents` to upload the file */
newItem.Attachments.Add(fStream.Name, contents); /* This line does not compile */
dc.SaveChanges();
}
}
}
}
我也尝试过来自here
DirectoryInfo attachmentDirectory = new DirectoryInfo(@"C:\xxx");
FileInfo[] attachments = attachmentDirectory.GetFiles();
foreach (FileInfo attachment in attachments)
{
FileStream fs = new FileStream(attachment.FullName, FileMode.Open, FileAccess.Read);
// Create a byte array of file stream length
byte[] ImageData = new byte[fs.Length];
//Read block of bytes from stream into the byte array
fs.Read(ImageData, 0, System.Convert.ToInt32(fs.Length));
//Close the File Stream
fs.Close();
newItem.Attachments.Add(attachment.Name, ImageData);
}
然而得到了同样的错误
如何附加列表项？
这是TestListItem类
//------------------------------------------------------------------------------
// <auto-generated>
// This code was generated by a tool.
// Runtime Version:4.0.30319.18052
//
// Changes to this file may cause incorrect behavior and will be lost if
// the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
// Original file name:
// Generation date: 1/30/2014 11:00:30 AM
namespace ConsoleApplication3.TestReference
{
/// <summary>
/// There are no comments for MVSDataContext in the schema.
/// </summary>
public partial
class MVSDataContext : global::System.Data.Services.Client.DataServiceContext
{
/// <summary>
/// Initialize a new MVSDataContext object.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public MVSDataContext(global::System.Uri serviceRoot) :
base(serviceRoot)
{
this.ResolveName = new global::System.Func<global::System.Type, string>(this.ResolveNameFromType);
this.ResolveType = new global::System.Func<string, global::System.Type>(this.ResolveTypeFromName);
this.OnContextCreated();
}
partial void OnContextCreated();
/// <summary>
/// Since the namespace configured for this service reference
/// in Visual Studio is different from the one indicated in the
/// server schema, use type-mappers to map between the two.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
protected global::System.Type ResolveTypeFromName(string typeName)
{
if (typeName.StartsWith("Microsoft.SharePoint.DataService", global::System.StringComparison.Ordinal))
{
return this.GetType().Assembly.GetType(string.Concat("ConsoleApplication3.TestReference", typeName.Substring(32)), false);
}
return null;
}
/// <summary>
/// Since the namespace configured for this service reference
/// in Visual Studio is different from the one indicated in the
/// server schema, use type-mappers to map between the two.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
protected string ResolveNameFromType(global::System.Type clientType)
{
if (clientType.Namespace.Equals("ConsoleApplication3.TestReference", global::System.StringComparison.Ordinal))
{
return string.Concat("Microsoft.SharePoint.DataService.", clientType.Name);
}
return null;
}
/// <summary>
/// There are no comments for Attachments in the schema.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public global::System.Data.Services.Client.DataServiceQuery<AttachmentsItem> Attachments
{
get
{
if ((this._Attachments == null))
{
this._Attachments = base.CreateQuery<AttachmentsItem>("Attachments");
}
return this._Attachments;
}
}
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
private global::System.Data.Services.Client.DataServiceQuery<AttachmentsItem> _Attachments;
/// <summary>
/// There are no comments for MasterPageGallery in the schema.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public global::System.Data.Services.Client.DataServiceQuery<MasterPageGalleryItem> MasterPageGallery
{
get
{
if ((this._MasterPageGallery == null))
{
this._MasterPageGallery = base.CreateQuery<MasterPageGalleryItem>("MasterPageGallery");
}
return this._MasterPageGallery;
}
}
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
private global::System.Data.Services.Client.DataServiceQuery<MasterPageGalleryItem> _MasterPageGallery;
/// <summary>
/// There are no comments for MasterPageGalleryCompatibleUIVersionS in the schema.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public global::System.Data.Services.Client.DataServiceQuery<MasterPageGalleryCompatibleUIVersionSValue> MasterPageGalleryCompatibleUIVersionS
{
get
{
if ((this._MasterPageGalleryCompatibleUIVersionS == null))
{
this._MasterPageGalleryCompatibleUIVersionS = base.CreateQuery<MasterPageGalleryCompatibleUIVersionSValue>("MasterPageGalleryCompatibleUIVersionS");
}
return this._MasterPageGalleryCompatibleUIVersionS;
}
}
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
private global::System.Data.Services.Client.DataServiceQuery<MasterPageGalleryCompatibleUIVersionSValue> _MasterPageGalleryCompatibleUIVersionS;
/// <summary>
/// There are no comments for TestList in the schema.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public global::System.Data.Services.Client.DataServiceQuery<TestListItem> TestList
{
get
{
if ((this._TestList == null))
{
this._TestList = base.CreateQuery<TestListItem>("TestList");
}
return this._TestList;
}
}
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
private global::System.Data.Services.Client.DataServiceQuery<TestListItem> _TestList;
/// <summary>
/// There are no comments for UserInformationList in the schema.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public global::System.Data.Services.Client.DataServiceQuery<UserInformationListItem> UserInformationList
{
get
{
if ((this._UserInformationList == null))
{
this._UserInformationList = base.CreateQuery<UserInformationListItem>("UserInformationList");
}
return this._UserInformationList;
}
}
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
private global::System.Data.Services.Client.DataServiceQuery<UserInformationListItem> _UserInformationList;
/// <summary>
/// There are no comments for Attachments in the schema.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public void AddToAttachments(AttachmentsItem attachmentsItem)
{
base.AddObject("Attachments", attachmentsItem);
}
/// <summary>
/// There are no comments for MasterPageGallery in the schema.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public void AddToMasterPageGallery(MasterPageGalleryItem masterPageGalleryItem)
{
base.AddObject("MasterPageGallery", masterPageGalleryItem);
}
/// <summary>
/// There are no comments for MasterPageGalleryCompatibleUIVersionS in the schema.
/// </summary>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Data.Services.Design", "1.0.0")]
public void AddToMasterPageGalleryCompatibleUIVersionS(MasterPageGalleryCompatibleUIVersionSValue masterPageGalleryCompatibleUIVersionSValue)
{
base.AddObject("MasterPageGalleryCompatibleUIVersionS", masterPageGalleryCompatibleUIVersionSValue);
}
/// <summary>
/// There are no comments for TestList in the schema.
/// </summary>
..............
答案 0 :(得分：2)
你有TestListItem的代码吗？看起来非常清楚，Add需要传递2个参数。
您需要为要添加的文件添加字节流 - 请参阅here
foreach (FileInfo attachment in attachments)
{
FileStream fs = new FileStream(attachment.FullName , FileMode.Open,FileAccess.Read);
// Create a byte array of file stream length
byte[] ImageData = new byte[fs.Length];
//Read block of bytes from stream into the byte array
fs.Read(ImageData,0,System.Convert.ToInt32(fs.Length));
//Close the File Stream
fs.Close();
item.Attachments.Add(attachment.Name, ImageData);
}
答案 1 :(得分：1)
调用方法AddQueryOption而不是Add：
newItem.Attachments.Add(fStream.Name, contents); /* This line does not compile */
newItem.Attachments.AddQueryOption(fStream.Name, contents); /* This line does compile */
答案 2 :(得分：1)
希望这对其他用户有帮助。
这里的问题是SharePoint客户端对象模型没有在Attachments文件夹下创建项目的子文件夹。
要解决此问题，您应该通过添加Web服务参考来使用"/_vti_bin/lists.asmx" Web服务，如果需要指示，请遵循this link。
使用FR.WssODataCore.ListsWebService;
将参考添加到服务后，您可以使用以下代码段：
var listsServiceClient = new Lists
{
Credentials = defaultContext.Credentials,
Url = siteCollectionUrl + "/_vti_bin/lists.asmx"
};
listsServiceClient.AddAttachment(currentListName, listItemId, fileName, fileContent);
siteCollectionUrl是您服务的网址，如http://yourSite.ext/webName，而defaultContext是Microsoft.SharePoint.Client的实例，我曾用它来完成其他操作。
请注意，您需要引用包含Lists对象的Web服务引用
using MyServiceNameSpace.ListsWebService;
通过这种方式，我可以通过组合操作来使用ListData.svc和Lists.asmx端点，而仅使用.asmx服务上载附件。
Here的另一个好资源。