This article explains how to upload a file in a Document Library.

In SharePoint, library files are uploaded using the Add method on the Files property of a SPWeb like this:

SPContext.Current.Web.Files.Add(docLibrary.RootFolder.Url + "/" + fileUpload.FileName, contents);

I have created a webpart that uploads a file provided by the user to a SharePoint library.

Use the following procedure to create a sample of doing it.

1. Create an empty SharePoint project and add a webpart.



2. Modify the code as below:

  1. using System;
  2. using System.ComponentModel;
  3. using System.Web;
  4. using System.Web.UI;
  5. using System.Web.UI.WebControls;
  6. using System.Web.UI.WebControls.WebParts;
  7. using Microsoft.SharePoint;
  8. using Microsoft.SharePoint.WebControls;
  9. using System.IO;
  11. namespace UploadFile.UploadFileWebPart
  12. {
  13. [ToolboxItemAttribute(false)]
  14. public class UploadFileWebPart : WebPart
  15. {
  16. private FileUpload fileUpload = new FileUpload();
  17. private Button btnUpload = new Button();
  19. private string docLibrary;
  21. [WebBrowsable, Personalizable]
  22. public string DocumentLibrary
  23. {
  24. Get
  25. {
  26. return docLibrary;
  27. }
  28. Set
  29. {
  30. docLibrary = value;
  31. }
  32. }
  33. protected override void CreateChildControls()
  34. {
  35. Controls.Add(fileUpload);
  36. Controls.Add(btnUpload);
  38. btnUpload.Text = "Upload";
  39. btnUpload.Click += new EventHandler(OnUploadClick);
  40. }
  41. void OnUploadClick(object sender, EventArgs e)
  42. {
  43. SPList docLibrary;
  44. Try
  45. {
  46. docLibrary = ValidateList();
  47. }
  48. catch (Exception ex)
  49. {
  50. Controls.Add(new LiteralControl(ex.Message));
  51. return;
  52. }
  53. Stream fStream = fileUpload.PostedFile.InputStream;
  54. byte[] contents = new byte[fStream.Length];
  55. fStream.Read(contents, 0, (int)fStream.Length);
  56. fStream.Close();
  58. SPSecurity.CatchAccessDeniedException = false;
  59. Try
  60. {
  61. SPContext.Current.Web.Files.Add(docLibrary.RootFolder.Url + "/" + fileUpload.FileName, contents);
  62. }
  63. catch (UnauthorizedAccessException)
  64. {
  65. Controls.Add(new LiteralControl("You are not authorized to upload files to the document library"));
  66. }
  67. }
  68. private SPList ValidateList()
  69. {
  70. if (string.IsNullOrEmpty(DocumentLibrary))
  71. {
  72. throw new Exception("Please edit the webpart and fill the Document Library property!");
  73. }
  75. if (!fileUpload.HasFile)
  76. {
  77. throw new Exception("Please select a file to upload.");
  78. }
  79. Try
  80. {
  81. return SPContext.Current.Web.Lists[DocumentLibrary];
  82. }
  83. catch (ArgumentException)
  84. {
  85. throw new Exception("Library not found!");
  86. }
  87. }
  89. }
  90. }

3. Build the solution and deploy.

4. Go to the Site Page library and create a page as in the following:



5. Add the Webpart.



6. Try to upload a document in the library. You will get the error as below:



7. Edit the webpart and fill in the name of the Document Library where you want to add the document through this page's webpart.



8. Now upload a file.



9. Navigate to the Document Library. You will find your uploaded document in the library.



Conclusion

This article explained how to upload a document in a Document Library using a custom webpart property.