Create content Type Client object model Sharepoint 2010

1. To create a content type using the client object model in Visual Studio 2010, create a new project (File ➪ New ➪ Project) and select a Console project template.
2. After the project starts, you will add references to the Microsoft.SharePoint.Client.dll and Microsoft.SharePoint.Client.Runtime.dll assemblies located in the 14\ISAPI folder also listed under the .NET component listing in the Add References dialog box.
3. Next, write the code below in you main method. Please note that unlike, server object model, client object model makes use of an Information class that contains the template of the content type. The information class works in a similar manner to the SPContentType class with the exception of the parent ’ s reference; rather than pass in a reference to the parent ’ s content type, client object model code gets the parent ’ s ID.

static void Main(string[] args)
{
// Get a reference to the site collection
ClientContext clientContext = new ClientContext(“http://SPsite”);
Web web = clientContext.Web;

// Load reference to content type collection
ContentTypeCollection contentTypes = web.ContentTypes;
clientContext.Load(contentTypes);
clientContext.ExecuteQuery();
// Create a Content Type Information object
ContentTypeCreationInformation _customcontenttype = new ContentTypeCreationInformation();
customcontenttype.Name = “Custom Content type”;
customcontenttype.ParentContentType = contentTypes.GetById(“ADD PARENT CONTENT TYPE ID”);
customcontenttype.Group = “Custom content type group”;
// Create the content type
ContentType myContentType= contentTypes.Add(customcontenttype);
clientContext.ExecuteQuery();
}

4. After the Information object is completed, a ContentType object is added to the ContentTypes collection that you loaded with the ClientContext using the Information object.

Programmatically create a new content type in sharepoint 2010

Here is the code snippet for creating a content type in a document library using object model.

Public void CreateContentType(string _contentTypename, sting _fullFilePath,SPweb currentWeb)
{

SPFile myFile = currentWeb.GetFile(fullFilePath);

if (currentWeb.AvailableContentTypes[contentTypename] == null)
{
var myContentType = new SPContentType(currentWeb.AvailableContentTypes[new SPContentTypeId("0x0101")], currentWeb.ContentTypes, “contenttypename”)
{
DocumentTemplate = myFile.ServerRelativeUrl,
Description = “My custom Content type”
}

currentWeb.ContentTypes.Add(myContentType);
}

SPDocumentLibrary myDocLib = (SPDocumentLibrary) currentWeb.Lists["doclibname"];

myDocLib.ContentTypesEnabled = true;
myDocLib.ContentTypes.Add(currentWeb.AvailableContentTypes["contenttypename"]);

myDocLib.Update()

}

Enable\Disable Ribbon button by Users Group Sharepoint 2010

In this post we will see a detailed example of how to enable and disable a ribbon button according to the Logged in user’s group. The idea here is to enable the ribbon button if the current user is a part of a pre-specified group (say ListOwners) and disable the same if the user is not one of the added users of the group.

The example uses “EnabledScript” attribute of the CommandUIHandler of the ribbon button to decide whether the button should be enabled or disabled for the loggedin user.

Code Overview -

1.  The below example enables the ribbion button if the current user is a part of a pre-specified group (say ListOwners)

2. The button remains\gets disabled if the user does not exist in the specified group.

3. A separate JavaScript file CheckUserInGroup.js which is deployed in /_layouts/RibbonScripts contains the EnableIfUserInGroup() function. This function is called in EnabledScript and it executes to check if the user exists in the pre-specified group.

Lets Start with creating a Ribbon button first  -

Steps -

1. Create a empty project.

2. Deploy it as a Farm solution.

3. Right click on the feature and click “Add feature”.

4. Right click on the project and add a new “Empty Element” item.

5. Next add the below code to add a custom Ribbon button to your document library.

<Elements xmlns=”http://schemas.microsoft.com/sharepoint/” >
<CustomAction
Id=”ButtonForGroupUsersOnly”
Location=”CommandUI.Ribbon”
RegistrationId=”101″
RegistrationType=”List”
Title=”Owners Group Button”>
<CommandUIExtension>
<CommandUIDefinitions>
<CommandUIDefinition
Location=”Ribbon.Library.ViewFormat.Controls._children”>
<Button Id=”Ribbon.Library.ViewFormat.UsersBtn”
Command=”usersBtnCommand”
LabelText=”Group Users Button”
Image32by32=”/_layouts/1033/IMAGES/buttonIcon.jpg”
TemplateAlias=”o1″ />
</CommandUIDefinition>
</CommandUIDefinitions>
<CommandUIHandlers>
<CommandUIHandler
Command=”usersBtnCommand”
CommandAction=”javascript:OwnerBtnscript();“/>  –> Refer Your Function here. This runs after your button is clicked
EnabledScript=”javascript:EnableIfUserInGroup();” -> Enable Ribbon function here
</CommandUIHandlers>
</CommandUIExtension>
</CustomAction>

//Referencing the Script
<CustomAction
Id=”OwnersButton.Script”
Location=”ScriptLink”
ScriptSrc =”/_layouts/RibbonScripts/CheckUserInGroup.js”/>
</Elements>

The Group Users Button created in the above code will be in the disabled mode on page load. The code inEnableIfUserInGroup(); will determine if the current  user is added to the specified group and the button needs to be enabled.

The CustomAction ScriptLink refers to the path of the CheckUserInGroup.js file which containsEnableIfUserInGroup(); and other JavaScript functions.

6. Next add a Javascript file in your project “CheckUserInGroup.js” and add it under Layouts -> RibbonScripts folder. Create Layouts folder using Add-> “Sharepoint Layouts Mapped Folder” .

7. Next, the following goes in your CheckUserInGroup.js file

<script src=”/_layouts/SP.js” type=”text/ecmascript”></script>
<script type=”text/javascript”>

// The below is called by EnabledScript in ribbon button
function EnableIfUserInGroup() {
var _userInGroup;

if (UserExistInGroup == null)
CheckUser();
else {
_userInGroup = UserExistInGroup;
UserExistInGroup = null;
return _userInGroup;
}
}

// The below checks if the user exists in the group

function CheckUser()
{
var clientContext = new SP.ClientContext();
var groupCollection = clientContext.get_web().get_siteGroups();

// Get the Our Group’s ID
var _group = groupCollection.getById(10); ->> ID of the Group that we are checking against e.g. ListOwners group
var users = _group.get_users(); ->> Get all Users of the group
clientContext.load(_group);
clientContext.load(users,’Include(loginName)’);

this._currentUser = clientContext.get_web().get_currentUser(); ->> Get current user
clientContext.load(this._currentUser,’Include(loginName)’);

clientContext.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));
RefreshCommandUI(); ->> Refreshes the Ribbon again to pick up the new value for UserExistInGroup
}

//The below Checks  if User is the member of the specified group
function onQuerySucceeded() {
if(users.count >0)
{
UserExistInGroup = false;

for(var i=0; i < users.count; i++)
{
if(users[i].get_loginName() == this._currentUser.get_loginName())
{
UserExistInGroup = true;
}
}
}}

function onQueryFailed(sender, args) {
alert(‘Request failed. ‘ + args.get_message() + ‘\n’ + args.get_stackTrace());
}
</script>

8. Next Build and deploy.

Read a file from Sharepoint document library

The below Code snippet might be helpful when you want to read a text file or a csv file that you uploaded in your document library via code.

I had a csv file with three columns; and I wanted to extract the data and add them into a list as an new item.

Code : The code reads each line of the csv file and then split the entries(columns) by “,” . If you have a text file then you can either split by space or by characters whatever is your requirement.

string line;
StreamReader file;
string contents = string.Empty;
SPFile spfile = properties.ListItem.File;
if (spfile.Exists)
{
string filePath = oWeb.Url + spfile.ServerRelativeUrl; -> oWeb is SPWeb instance

file = new StreamReader(spfile.OpenBinaryStream());
while ((line = file.ReadLine()) != null) -> Reading line by line of the csv file
{
char[] splitter = { ‘,’ };
String[] Array = line.ToString().Split(splitter);
// Now my Array has all the columns of the first line. I then added it to a new list as an item

using (SPSite oSiteCollection = new SPSite(SiteID))
{
using (SPWeb oWeb = oSiteCollection.OpenWeb(WebID))
{
SPList myList = oWeb.Lists["My Custom List"];
SPItem newEntry = myList.Items.Add();
newEntry["Col1"] = Array[0];
newEntry["Col2"] = Array[1];
newEntry["Col3"] = Array[2];
newEntry.Update();
myList.Update();
}}

Create a Custom Timer Job in SharePoint 2010

1. Open Visual Studio 2010 and select File –> New –> Project…

2. In the New Project window, under Installed Templates, select SharePoint –> 2010 and select Empty SharePoint Project. Give the project a Name and click OK.

3. Enter the URL for SharePoint local site, check the Deploy as a farm solution, and click Finish.

4. Create a new class.  Right click on the project in the Solution Explorer window and select Add –> New Item…

5. In the Add New Item window, under Installed Templates, select Visual C# –> Code and select Class.  Give the class a name and click OK.

6. The new class needs to inherit from the Microsoft.SharePoint.Administration.SPJobDefinition class. Copy and paste the following code, which creates a the constructors, overrides the Execute() method, and inherits theSPJobDefinition class: (Note: In this code example, an item is added to a SharePoint list every time the Execute() method is called.  The list called “ListTimerJob” must reside within SharePoint.)

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using Microsoft.SharePoint; using Microsoft.SharePoint.Administration;   namespace UpshotSP {     class ListTimerJob : SPJobDefinition     {          public ListTimerJob()               : base()         {           }           public ListTimerJob(string jobName, SPService service, SPServer server, SPJobLockType targetType)               : base(jobName, service, server, targetType)         {           }           public ListTimerJob(string jobName, SPWebApplication webApplication)               : base(jobName, webApplication, null, SPJobLockType.ContentDatabase)         {               this.Title = "List Timer Job";           }           public override void Execute(Guid contentDbId)         {               // get a reference to the current site collection's content database               SPWebApplication webApplication = this.Parent as SPWebApplication;               SPContentDatabase contentDb = webApplication.ContentDatabases[contentDbId];               // get a reference to the "ListTimerJob" list in the RootWeb of the first site collection in the content database               SPList Listjob = contentDb.Sites[0].RootWeb.Lists["ListTimerJob"];               // create a new list Item, set the Title to the current day/time, and update the item               SPListItem newList = Listjob.Items.Add();               newList["Title"] = DateTime.Now.ToString();               newList.Update();           }     } }

7. Add a Feature to the solution by right clicking on Features in the Solution Explorer window and selecting Add Feature.

8. Right click on Feature1 and select Add Event Receiver.

9.  A new class is created that handles the feature’s events.  Copy and paste the following code, which handles theFeatureActivated event, installing the custom timer job, and handles the FeatureDeactivating event, uninstalling the custom timer job:

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namespace UpshotSP.Features.Feature1 { [Guid("9a724fdb-e423-4232-9626-0cffc53fb74b")] public class Feature1EventReceiver : SPFeatureReceiver     {         const string List_JOB_NAME = "ListLogger";         // Uncomment the method below to handle the event raised after a feature has been activated.           public override void FeatureActivated(SPFeatureReceiverProperties properties)         {             SPSite site = properties.Feature.Parent as SPSite;               // make sure the job isn't already registered               foreach (SPJobDefinition job in site.WebApplication.JobDefinitions)             {                   if (job.Name == List_JOB_NAME)                       job.Delete();               }               // install the job               ListTimerJob listLoggerJob = new ListTimerJob(List_JOB_NAME, site.WebApplication);               SPMinuteSchedule schedule = new SPMinuteSchedule();               schedule.BeginSecond = 0;               schedule.EndSecond = 59;               schedule.Interval = 5;               listLoggerJob.Schedule = schedule;               listLoggerJob.Update();           }           // Uncomment the method below to handle the event raised before a feature is deactivated.           public override void FeatureDeactivating(SPFeatureReceiverProperties properties)         {             SPSite site = properties.Feature.Parent as SPSite;               // delete the job               foreach (SPJobDefinition job in site.WebApplication.JobDefinitions)             {                   if (job.Name == List_JOB_NAME)                       job.Delete();               }           }       }   }

10. Select the appropriate scope where the new feature will be activated.  Double click Feature1.Feature in theSolution Explorer window and choose the desired Scope from the dropdown menu.

11. Deploy the solution by right clicking on the project in the Solution Explorer window and selecting Deploy.

12. Navigate to the SharePoint “ListTimerJob” list and verify that a new item has been added with the current day/time as the title. (Note: The custom timer job , and many other services, can be modified within Central Administration site.)

13. Finished!