Connect CRM to SharePoint via SDK

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Crm.Sdk.Messages;
using SP = Microsoft.SharePoint.Client;
using Microsoft.SharePoint.Client;
using System.Security;
public class CreateSharepointFolder: IPlugin
{
    static SharePointOnlineCredentials creds;
    static string SharepointsiteURL = “”;
    static string SharepointUsername = “”;
    static string Sharepointpassword = “”;
    public CreateSharepointFolder(string unsecureConfig, string secureConfig)
    {
        if (string.IsNullOrEmpty(unsecureConfig)) throw new InvalidPluginExecutionException(“Unsecure configuration missing.”);
        else
        {
            SharepointsiteURL = unsecureConfig;
            string[] splitt = secureConfig.Split(new char[] {‘;’
            });
            SharepointUsername = secureConfig[0].ToString();
            Sharepointpassword = secureConfig[1].ToString();
        }
    }
    public void Execute(IServiceProvider serviceProvider) {
        IPluginExecutionContext context = (IPluginExecutionContext) serviceProvider.GetService(typeof(IPluginExecutionContext));
        IOrganizationServiceFactory factory = (IOrganizationServiceFactory) serviceProvider.GetService(typeof(IOrganizationServiceFactory));
        IOrganizationService service = factory.CreateOrganizationService(context.UserId);
        //Create connection to sharepoint site
        creds = GetSharepointCredentials();
        try
        {
            // The InputParameters collection contains all the data passed in the message request.
            if (context.InputParameters.Contains(“Target”) && context.InputParameters[“Target”] is Entity)
            {
                Entity entity = (Entity) context.InputParameters[“Target”];
                if (context.MessageName == “Create” && context.PrimaryEntityName == “new_entity”)
                {
                    //Entity folder name in sharepoint site
                    string entityDisplayName = “Test Entity”;
                    //Folder name for new record
                    string RecordFolderName = entity.Attributes[“new_name”].ToString() + “_” + entity.Id.ToString().Replace(“ {“, “”).Replace(“
                    }”, “”).Replace(“ - “, “”).ToUpper();
                    //Create entity main folder
                    CreateFolder(SharepointsiteURL, entityDisplayName, context.PrimaryEntityName.ToString(), RecordFolderName, “”, creds);
                    //Create child folder
                    CreateFolder(SharepointsiteURL, entityDisplayName, context.PrimaryEntityName.ToString(), RecordFolderName, “Images”, creds);
                }
            }
        }
        catch (Exception ex)
        {
            throw new InvalidPluginExecutionException(ex.Message.ToString());
        }
    }
    public SharePointOnlineCredentials GetSharepointCredentials()
    {
        if (creds == null)
        {
            SecureString securePassword = new SecureString();
            for (int i = 0; i < Sharepointpassword.Length; i++)
            securePassword.AppendChar(Sharepointpassword[i]);
            creds = new SharePointOnlineCredentials(SharepointUsername, securePassword);
        }
        return creds;
    }
    public void CreateFolder(string siteUrl, string listName, string folderlogicalName, string newfolderName, string relativePath, SharePointOnlineCredentials cred)
    {
        using(ClientContext clientContext = new ClientContext(siteUrl))
        {
            clientContext.Credentials = creds;
            Web web = clientContext.Web;
            SP.List list = web.Lists.GetByTitle(listName);
            ListItemCreationInformation newItem = new ListItemCreationInformation();
            newItem.UnderlyingObjectType = FileSystemObjectType.Folder;
            newItem.FolderUrl = siteUrl + folderlogicalName;
            if (!relativePath.Equals(string.Empty)) newItem.FolderUrl += “ / ” + relativePath;
            newItem.LeafName = newfolderName;
            SP.ListItem item = list.AddItem(newItem);
            item.Update();
            clientContext.ExecuteQuery();
        }
    }
}