Inside my event receiver how i can find a specific wiki page and get its HTML source for my enterprise wiki site collection

Question

I am working on an event receiver inside my Enterprise wiki site collection inside SharePoint 2013. Now inside my event receiver I am trying to do the following:-

1. Find specific wiki page (by title, Name or UL).

2. For this page get its HTML Source code. Similar to the HTML source code I get when I edit a wiki page, click on “Edit Source” button.

Now I have the following code inside my event receiver, where I am able to get all the wiki pages, but seems trying to get a wiki page by title or by name is not working using the indexer,, as the PublishingPage pp variable inside my code will always be null..

public override void ItemAdded(SPItemEventProperties properties)
        {
            base.ItemAdded(properties);
            SPWeb spCurrentSite = properties.OpenWeb();
            if (properties.List.Title.ToLower() == "customers")
            {



                PublishingSite pSite = new PublishingSite(properties.Site);
                SPContentType ctype = pSite.ContentTypes["Enterprise Wiki Page"];
                PageLayoutCollection pageLayouts = pSite.GetPageLayouts(ctype, true);
                PageLayout pageLayout = pageLayouts["EnterpriseWiki.aspx"];
                PublishingWeb pWeb = PublishingWeb.GetPublishingWeb(properties.Web);

                PublishingPageCollection pPages = pWeb.GetPublishingPages();
                //
                int t = pPages.Count;
                PublishingPage pp = pPages["Test - Main"];// I have a wiki page with title= “Test – Main”

so can anyone adivce if there is a way to get a specific wiki page by title,name or url and for this wiki page to get its HTML source?

Thanks

Answer 1

Yes, one way to get it by server relative url by using code below:

public static string GetWikiPageContent(Web web, string serverRelativePageUrl)
{

    var file = web.GetFileByServerRelativeUrl(serverRelativePageUrl);

    web.Context.Load(file, f => f.ListItemAllFields);

    web.Context.ExecuteQuery();

    return file.ListItemAllFields["WikiField"] as string;
}  

If you are using PnP package, you can just write web.GetWikiPageContent(<page server relative url>)

Answer 2

Try the below code, you need to pass the server relative url of the wiki page.

public override void ItemAdded(SPItemEventProperties properties)
{
    base.ItemAdded(properties);
    SPWeb spCurrentSite = properties.OpenWeb();
    if (properties.List.Title.ToLower() == "customers")
    {

        string wikiPageUrl = "server relative url of the page";
        SPFile wikiPage = spCurrentSite.GetFile(wikiPageUrl);
        SPListItem wikiItem = wikiPage.Item; 
        wikiItem[SPBuiltInFieldId.WikiField] = "My Wiki list item updated"; 
        wikiItem.Update();
    }
}