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I have a template/format in excel which has to be used to generate salary slips. I have saved it in a document library and using interop, open an instance of it in a workbook programmatically. After I populate it with elements I retrieve from a list, I have to save it as a file in another document library. How do I do it?

I am trying to implement it in an autohosted app.

  • Are you using sharepoint online or sharepoint foundation 2010? – Aanchal May 28 '14 at 7:37
  • I am using cloud version of sharepoint – Swayam Siddha May 28 '14 at 9:53
  • I am able to open an excel file stored in a library, am able to modify it. I want to store the file in another library. – Swayam Siddha May 28 '14 at 9:58
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As far as i understand your question, After doing modification you can upload the file to sharepoint using CSOM.

 ClientContext context = new ClientContext("http://spdevinwin");

 Web web = context.Web;

   FileCreationInformation newFile = new FileCreationInformation();
 newFile.Content = System.IO.File.ReadAllBytes(@"C:\Work\Files\17580_FAST2010_S05_Administration.pptx");
  newFile.Url = "17580_FAST2010_S05_Administration 4MB file uploaded via client OM.pptx";

    List docs = web.Lists.GetByTitle("Documents");
 Microsoft.SharePoint.Client.File uploadFile = docs.RootFolder.Files.Add(newFile);
  context.Load(uploadFile);
  context.ExecuteQuery();

so you can set newFile.Content with your files byte array.

Please correct me if i am not able to understand you.

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  • I am using this for an autohosted app for the cloud version of sharepoint. I am not sure if this would work for cloud! – Swayam Siddha May 28 '14 at 9:56
  • You can try this as this is client object model. But just remember to create credentials as SecureString passWord = new SecureString(); foreach (char c in "yourpassword".ToCharArray()) passWord.AppendChar(c); clientContext.Credentials = new SharePointOnlineCredentials("loginname@yoursite.onmicrosoft.com", passWord); – Aanchal May 28 '14 at 10:03
  • I know that, but whats the location of the edited file in sharepoint cloud. As I said, i've opened a file in a document library and edited it. What param should I give to ReadAllBytes? My source is a worksheet object. I dont have the location of this object!! – Swayam Siddha May 28 '14 at 10:14
  • So what you can do is download the file first then upload that file to other location. Is there any problem with this approach? – Aanchal May 28 '14 at 10:22
  • Also you should use provider hosted apps as Microsoft discontinues Autohosted Apps model in SharePoint Online.thuansoldier.net/?p=4058 – Aanchal May 28 '14 at 10:24

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