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I want to change the Site Logo of the Office 365 sandbox solution using C#.

enter image description here

I have tried this code:

site.RootWeb.SiteLogoUrl = imageUrl;

But, Its not working.

I also want to upload the image programmatically & store in sharepoint list (column of 'Hyperlink & Image' type).

1 Answer 1

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For uploading file you are use below snippet

/// <summary>
/// Uploads the specified file to a SharePoint site
/// </summary>
/// <param name="url">site url</param>
/// <param name="creds">Credentials</param>
/// <param name="listTitle">List Title</param>
/// <param name="fileName">File Name</param>
private static void UploadFile(string url, ICredentials creds, string listTitle,string fileName)
{
      using (var clientContext = new ClientContext(url))
      {
           clientContext.Credentials = creds;

           using (var fs = new FileStream(fileName, FileMode.Open))
           {
               var fi = new FileInfo(fileName);
               var list = clientContext.Web.Lists.GetByTitle(listTitle);
               clientContext.Load(list.RootFolder);
               clientContext.ExecuteQuery();
               var fileUrl = String.Format("{0}/{1}", list.RootFolder.ServerRelativeUrl, fi.Name);

               Microsoft.SharePoint.Client.File.SaveBinaryDirect(clientContext, fileUrl, fs, true);
            }
       }
  }

For setting site logo you can use SiteLogoUrl property. Its supported in CSOM https://officespdev.uservoice.com/forums/224641-general/suggestions/6234945-make-the-sitelogourl-property-available-in-csom

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