Inject HTML into SharePoint view (AllItems.aspx) via powershell

This is something that I knocked up on the train.

To use it, create a content editor web part with your html that you wish to add to the list views and export that to your file system.

Then run it providing the url to the web, name of the list to add the web part to the views of and the path to the web part that you have created and exported out.

Hope that helps. There are a few cavaets it works but has not been hardened and it will add a web part if it already exists on the page. Also you will need some tweaking to get it to appear in the right zone etc but should give you a good start.

param
(
    [Parameter(Mandatory=$false, HelpMessage='Url of site containing list')]
    [string]$SiteUrl="http://sharepoint",
    [Parameter(Mandatory=$false, HelpMessage='Name of List')]
    [string]$ListName="Workflow Tasks",
    [Parameter(Mandatory=$false, HelpMessage='Web Part file path')]
    [string]$WebPartFilePath="Content Editor.dwp",
    [Parameter(Mandatory=$false, HelpMessage='Name of the web part zone')]
    [string]$WebPartZone="Top",
    [Parameter(Mandatory=$false, HelpMessage='order of web part to load into')]
    [int]$WebPartIndex=0    

)

asnp Microsoft.SharePoint.PowerShell;

$site=Get-SPSite -Identity $SiteUrl -ErrorAction SilentlyContinue;
if($site -ne $null)
{
    $web = $site.RootWeb;

    $list = $web.Lists.TryGetList($ListName);

    $fileStream = [System.IO.File]::OpenRead($WebPartFilePath);

    if($fileStream -ne $null)
    {
        $importErrorMessage="";



        foreach($listView in $list.Views)
        {
            #move stream to the start of the flie
            $fileStream.Seek(0,[System.IO.SeekOrigin]::Begin);
            $xmlReader = [System.Xml.XmlReader]::Create($fileStream);

            Write-Host "Updating List View $listView.Url with Web Part $WebPartFilePath";
            $listViewPageUrl = $web.Url + $listView.Url;
            $listViewPage = $web.GetFile($listViewPageUrl);

            $limitedWebPartManager = $listViewPage.GetLimitedWebPartManager([System.Web.UI.WebControls.WebParts.PersonalizationScope]::Shared);
            $webPartObject = $limitedWebPartManager.ImportWebPart($xmlReader, [ref]$importErrorMessage);
            $limitedWebPartManager.AddWebPart($webPartObject, $WebPartZone, $WebPartIndex); 
            $limitedWebPartManager.SaveChanges($webPartObject);
            $listViewPage.Update();
            Write-Host "Done" -ForegroundColor Green;

        }

        $fileStream.Close();
    }

}