使用Microsoft.SharePoint.Client将图像上载到sharepoint文件夹

ClientContext context = new ClientContext("https://your-sharepoint-site-url");

List targetList = context.Web.Lists.GetByTitle("Your Target List");
context.Load(targetList, list => list.RootFolder);
context.ExecuteQuery();

Folder targetFolder = context.Web.GetFolderByServerRelativeUrl(targetList.RootFolder.ServerRelativeUrl + "/Your Target Folder");
context.Load(targetFolder);
context.ExecuteQuery();

string imagePath = "path/to/your/image.jpg";
using (FileStream fs = new FileStream(imagePath, FileMode.Open))
{
    FileCreationInformation fileInfo = new FileCreationInformation();
    fileInfo.ContentStream = fs;
    fileInfo.Url = Path.GetFileName(imagePath);
    fileInfo.Overwrite = true;
    Microsoft.SharePoint.Client.File uploadedFile = targetFolder.Files.Add(fileInfo);
    context.Load(uploadedFile);
    context.ExecuteQuery();
}