SP2010: Client object model: add new wikipage to document library

Question

Is it possible to create a new wiki page using the client object model and give it some content ("<h1>Welcome to the SharePoint!</h1>")?

I'm using VB.Net

Answer 1

How to create Wiki page using SharePoint CSOM

The example below demonstrates how to create wiki page via CSOM (VB.NET version):

Sub CreateWikiPage(context As ClientContext, pageName As String, pageContent As String)

    Const templateRedirectionPageMarkup As String = "<%@ Page Inherits=""Microsoft.SharePoint.Publishing.TemplateRedirectionPage,Microsoft.SharePoint.Publishing,Version=14.0.0.0,Culture=neutral,PublicKeyToken=71e9bce111e9429c"" %> <%@ Reference VirtualPath=""~TemplatePageUrl"" %> <%@ Reference VirtualPath=""~masterurl/custom.master"" %>"

    Dim wikiPages = context.Web.Lists.GetByTitle("Pages")
    context.Load(wikiPages)
    context.ExecuteQuery()

    Dim fileInfo = New FileCreationInformation()
    fileInfo.Url = pageName
    fileInfo.Content = Encoding.UTF8.GetBytes(templateRedirectionPageMarkup)
    fileInfo.Overwrite = True

    Dim wikiFile = wikiPages.RootFolder.Files.Add(fileInfo)
    context.Load(wikiFile)
    context.ExecuteQuery()

    Dim wikiPage = wikiFile.ListItemAllFields
    wikiPage("PublishingPageContent") = pageContent
    wikiPage("PublishingPageLayout") = "/_catalogs/masterpage/EnterpriseWiki.aspx, Basic Page"
    wikiPage.Update()
    context.ExecuteQuery()

End Sub

Note: the provided method is intended for creating enterprise wiki pages

Usage

Using ctx = New ClientContext(siteUrl)      
   CreateWikiPage(ctx, "Greetings.aspx", "<H1>Welcome to the SharePoint!</H1>")
End Using

References

Some tips and tricks of using SharePoint Client Object Model in PowerShell. Part 1

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How to create a page in Wiki Page Library using CSOM

For SharePoint 2013

Use Utility.CreateWikiPageInContextWeb method to create a page in Wiki Page Library:

Sub CreateWikiPageInLibrary(context As ClientContext, wikiPageLibraryTitle As String, pageName As String, pageContent As String)

    Dim wikiLibrary = context.Web.Lists.GetByTitle(wikiPageLibraryTitle)
    context.Load(wikiLibrary.RootFolder)
    context.ExecuteQuery()

    Dim wikiPageInfo As New WikiPageCreationInformation
    wikiPageInfo.WikiHtmlContent = pageContent
    wikiPageInfo.ServerRelativeUrl = String.Format("{0}/{1}", wikiLibrary.RootFolder.ServerRelativeUrl, pageName)
    Dim wikiFile = Microsoft.SharePoint.Client.Utilities.Utility.CreateWikiPageInContextWeb(context, wikiPageInfo)
    context.ExecuteQuery()

End Sub

For SharePoint 2010

Sub CreateWikiPageInLibrary(context As ClientContext, wikiPageLibraryTitle As String, pageName As String, pageContent As String)

    Dim wikiLibrary = context.Web.Lists.GetByTitle(wikiPageLibraryTitle)
    context.Load(wikiLibrary.RootFolder)
    context.ExecuteQuery()


    Dim pageUrl = String.Format("{0}/{1}", wikiLibrary.RootFolder.ServerRelativeUrl, pageName)
    Dim wikiFile = wikiLibrary.RootFolder.Files.AddTemplateFile(pageUrl, TemplateFileType.WikiPage)
    context.Load(wikiFile)
    context.ExecuteQuery()

    Dim wikiPage = wikiFile.ListItemAllFields
    wikiPage("WikiField") = pageContent
    wikiPage.Update()
    context.ExecuteQuery()

End Sub