Question

新手开发人员在这里遇到问题我会很感激一些帮助： - ）

我正在开发一个ASP Web应用程序（一个简单的公告板，允许用户创建买卖广告）。我的所有数据都是从MSSQL数据库中存储/检索的。但是，我希望使用SharePoint Online库存储/检索广告的图像。

我在第一个障碍中挣扎，即将图像上传到图书馆。我已经调试和调试了一些，但我还在打砖墙。经过几个小时的尝试，我现在有了下面的代码，虽然图像永远不会出现在目标库中，但它不再返回任何错误。

鉴于上述所有情况，我真诚地感谢任何专家的帮助！

以下代码在＆＃34;创建广告＆＃34;按下按钮。

string currentUserName = 
System.DirectoryServices.AccountManagement.UserPrincipal.Current.DisplayName;

SqlConnection conn2;
SqlCommand comm2;
SqlDataReader reader;

string connectionString2 = 

ConfigurationManager.ConnectionStrings["CCString"].ConnectionString;
conn2 = new SqlConnection(connectionString2);
comm2 = new SqlCommand("SELECT TOP 1 * FROM Threads WHERE ([AdvertiserName] = '" + currentUserName + "') ORDER BY PostCreationDateTime DESC", conn2);

conn2.Open();
reader = comm2.ExecuteReader();
reader.Read();

Guid imageID;
string imageIDConfirmed = "";
string fileExtension = "";

if (reader["UniqueImageID"].GetType().Name != "DBNull")
{
imageID = (Guid)reader["UniqueImageID"];
imageIDConfirmed = imageID.ToString().Replace(":", "-");
string myFile = jpgFileUpload.FileName;
fileExtension = myFile.Substring(myFile.Length - 4, 4);
}

reader.Close();
conn2.Close();

string username = "username@emailaddress.com";
string password = "password";

System.Security.SecureString securePass = new 
System.Security.SecureString();
foreach (char ch in password.ToCharArray()) securePass.AppendChar(ch);
SharePointOnlineCredentials credentials = new 
SharePointOnlineCredentials(username, securePass);
using (ClientContext client = new 
ClientContext("https://company.sharepoint.com/sites/SiteName/"))
{
var formLib = client.Web.Lists.GetByTitle("Documents");
client.Credentials = credentials;
client.Load(formLib.RootFolder);
client.ExecuteQuery();

string fileName = @"C:\Temp\" + jpgFileUpload.FileName;
jpgFileUpload.SaveAs(fileName);

var fileUrl = "";

int fileLen;
fileLen = jpgFileUpload.PostedFile.ContentLength;
byte[] input = new byte[fileLen - 1];
input = jpgFileUpload.FileBytes;

UploadDocument(@"https://company.sharepoint.com/sites/SiteName/", "Documents", "https://company.sharepoint.com/sites/SiteName/Shared%20Documents/", "testDocument", input);

using (var fs = new FileStream(fileName, FileMode.Open))
{
var fi = new FileInfo(imageIDConfirmed + fileExtension);
fileUrl = String.Format("{0}/{1}", formLib.RootFolder.ServerRelativeUrl, fi.Name);
Microsoft.SharePoint.Client.File.SaveBinaryDirect(client, fileUrl, fs, true);
client.ExecuteQuery();
}

var libFields = formLib.Fields;
client.Load(libFields);
client.ExecuteQuery();

Microsoft.SharePoint.Client.File newFile = 
client.Web.GetFileByServerRelativeUrl(fileUrl);
Microsoft.SharePoint.Client.ListItem item = newFile.ListItemAllFields;
item["Title"] = "Any Title";
item["File Name"] = "Any File Name";
item.Update();
client.Credentials = credentials;
client.ExecuteQuery();

Answer 1

虽然图像永远不会出现在目标库中，但不会再返回任何错误

文件是否可能存在但处于某种未检查状态？

作为网站集管理员，请转到文档 - ＆gt;设置 - ＆gt; ＆＃34;权限和管理＆＃34;部分 - ＆gt;管理没有签入版本的文件。

如果有没有签入版本的文件，这可能表示需要在代码中提供签入逻辑，或者可能存在必填字段的问题。

通过CSOM将图像/文件从ASP Web应用程序上载到SharePoint Online

1 个答案: