Document ID generator for SharePoint 2010

In this article we will be seeing how to change the document id provider from default to custom and vice-versa.

I have created a class library which is inherited from Microsoft.Office.Document.DocumentIDProvider for implementing the custom document id provider.

Create a class library for implementing custom document id provider:

Open Visual Studio 2010.
Go to File=> New =>Project.
Select Class Library template from the installed templates.
Enter the name and click on Ok.
Add the following references.
- Microsoft.SharePoint.dll
- Microsoft.Office.DocumentManagement.dll
Add the following namespaces.
- Using Microsoft.SharePoint;
- Using Microsoft.Office.DocumentManagement;
Replace the code with the following

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint;
using Microsoft.Office.DocumentManagement;
namespace anavijai.DocumentIDProvider
{
public class CustomDocumentIDProvider : Microsoft.Office.DocumentManagement.DocumentIdProvider
{
private string idFormat = "{0} - {1}- {2}";

public override string[] GetDocumentUrlsById(SPSite site, string documentId)
{
string itemUrl = string.Empty;
// Only proceed if we have the site and document id
if (site != null && !string.IsNullOrEmpty(documentId))
{
string[] splits = documentId.Split('@', ' ');
string webName = splits.Length > 0 ? splits[0] : null;
string itemId = splits.Length > 1 ? splits[1] : null;
try
{
SPWeb web = string.IsNullOrEmpty(webName) ? site.OpenWeb() : site.OpenWeb(webName);
SPListItem item = null;
Guid itemGuid = new Guid(itemId);
// Find the item among the lists on the specified web
foreach (SPList list in web.Lists)
{
try
{
item = list.Items[itemGuid];
}
catch
{
//if it's not in this list, go to the next one
continue;
}
if (item != null)
{
itemUrl = web.Url + "/";
itemUrl += item.Url;
}
}
}
catch (Exception) { /* item not found, return an empty array*/ }
}

if (string.IsNullOrEmpty(itemUrl))
{
return null;
}
else
{
return new string[] { itemUrl };
}
}

public override string GenerateDocumentId(SPListItem listItem)
{
if (listItem == null)
{
throw new ArgumentNullException("listItem");
}
return string.Format(this.idFormat, listItem.ParentList.Title, listItem.Web.Title, listItem.ID.ToString());
}

public override string GetSampleDocumentIdText(SPSite site)
{
return string.Format(this.idFormat, "/", "0");
}

public override bool DoCustomSearchBeforeDefaultSearch
{
get { return false; }
}
}
}
The solution looks like the following

Create a windows form to change the document id provider:

Open Visual Studio 2010.
Go to File=> New =>Project.
Select Windows Forms Application template from the installed templates.
Enter the name as DocumentID and click on Ok.
Add the following references.

o Microsoft.SharePoint.dll
o Microsoft.Office.DocumentManagement.dll
o Anavijai.DocumentIDProvider.dll
Add the following namespaces.

o Using Microsoft.SharePoint;
o Using Microsoft.Office.DocumentManagement;
o Using anavijai.DocumentIDProvider
DocumentID.cs[Design] looks like the following
Button click events:
The entire solution looks like the following
Build the solution and Hit F5.
Enter the site collection URL in the form where you want to change the document ID.
Click on Custom ID.
Click on Default ID.