如何在 ASP.NET MVC 中将文件上传到 Sharepoint 库？

Question

我已经阅读了很多关于此的问题，但我仍然感到困惑.. 我做了一个powerapps项目，我将一个文件上传到sharepoint，上传会创建一个文件夹，其中包含一个文本字段，该字段将在该表单中填写。如果名称已经是一个文件夹，他会在字段内部上传只会上传到图书馆！

现在我想要做的是完全相同的事情，但是使用 C# ASP.NET，我想创建一个表单，我发送 2 个值、一个用于创建文件夹的文本和要上传到该文件夹​​的文件！有人可以帮忙吗？ ：） 谢谢你的帮助 ！ :)

Answer 1

您可以使用 SharePoint CSOM 创建文件夹：

            string userName = "user@Tenant.onmicrosoft.com";
            string Password = "*********";
            var securePassword = new SecureString();
            foreach (char c in Password)
            {
                securePassword.AppendChar(c);
            }
            using (var ctx = new ClientContext("https://tenant.sharepoint.com/sites/sitename"))
            {
                ctx.Credentials = new Microsoft.SharePoint.Client.SharePointOnlineCredentials(userName, securePassword);
                Web web = ctx.Web;
                ctx.Load(web);
                ctx.ExecuteQuery();
                List byTitle = ctx.Web.Lists.GetByTitle("LibraryName");

                // New object of "ListItemCreationInformation" class
                ListItemCreationInformation listItemCreationInformation = new ListItemCreationInformation();

                // Below are options.
                // (1) File - This will create a file in the list or document library
                // (2) Folder - This will create a foder in list(if folder creation is enabled) or documnt library
                listItemCreationInformation.UnderlyingObjectType = FileSystemObjectType.Folder;

                // This will et the internal name/path of the file/folder
                listItemCreationInformation.LeafName = "NewFolderFromCSOM";

                ListItem listItem = byTitle.AddItem(listItemCreationInformation);

                // Set folder Name
                listItem["Title"] = "NewFolderFromCSOM";

                listItem.Update();
                ctx.ExecuteQuery();
            }

Create Folder in SharePoint using CSOM

然后将文件上传到新创建的文件夹：

            string userName = "user@Tenant.onmicrosoft.com";
            string Password = "*******";
            var securePassword = new SecureString();
            foreach (char c in Password)
            {
                securePassword.AppendChar(c);
            }
            using (var ctx = new ClientContext("https://tenant.sharepoint.com/"))
            {
                ctx.Credentials = new Microsoft.SharePoint.Client.SharePointOnlineCredentials(userName, securePassword);
                Web web = ctx.Web;
                ctx.Load(web);
                ctx.ExecuteQuery();
                FileCreationInformation newFile = new FileCreationInformation();
                newFile.Content = System.IO.File.ReadAllBytes("D:\\document.pdf");
                newFile.Url = @"document.pdf";
                List byTitle = ctx.Web.Lists.GetByTitle("Documents");
                Folder folder = byTitle.RootFolder.Folders.GetByUrl("NewFolderFromCSOM");
                ctx.Load(folder);
                ctx.ExecuteQuery();
                Microsoft.SharePoint.Client.File uploadFile = folder.Files.Add(newFile);
                uploadFile.CheckIn("checkin", CheckinType.MajorCheckIn);
                ctx.Load(byTitle);
                ctx.Load(uploadFile);
                ctx.ExecuteQuery();
                Console.WriteLine("done");
            }