Create modern page using defined template

SharePoint onprem and SharePoint online updates never been same.Most of required feature which are available in SPOnline is not available in SharePoint On-prem. One of them is template based page creation.As of today you can create page with provided template in communication site but not available in Team site. So here is the small solution, by using we can provide plenty of predefined template to end users for their easiness.
Lets start:

Step 1: Create a empty page, just add your columns and widgets into into , like I have created. Refer below screenshot.

So here I have added few widget and created a blank page page, once you page created just save that page.

Step 2: After saving the page just run below script to get the Canvas content of the page.

$templatePageName= "demo-page.aspx"
$oWeb = Get-SPWeb "<Site URL>"
$pageLibrary = $oWeb.Lists["Site Pages"]
$page = $pageLibrary.GetItems() | select Name, ID | where { $_.Name -eq $templatePageName }
if ($null -ne $page.ID) {
    $canvasContent = $pageLibrary.GetItemByID($page.ID)["CanvasContent1"]
    $canvasContent | Out-File -FilePath C:\canvasContent.txt
else { Write-Host "Page Id not found" -ForegroundColor DarkCyan }

Step 3: After running above script you will find the Canvas content text in text file with name “canvasContent.txt” which is generated in C drive of your machine.Now copy that text and pass it to “CanvasContent1” property.

Step 4: Refer article Create Modern page using C# in SharePoint’19 on-prem and pass text of canvasContent.txt file to “CanvasContent1” property.

That’s it, like this you can provide functionality to create page with your own template.

Create Modern page using C# in SharePoint’19 on-prem

Here I am just demonstrating to you, how we can create a page using the server object model in SharePoint’19 on-prem. There are many things we control through C# while creating the Pages like disable comment, publish the page, custom templates, embedded pre-defined web part, and many more.

There are three types of Page Layout available, so you can choose based on your requirement. By default, you can only create Article Page from UI, but after doing some customization you can do much more on pages.

  • Home
  • Article

Another parameter is “PromotedState”, if you pass 2 then your page is a news page and 0 generic pages.

We can also use customize canvas or we can say multiple page templates to create the Modern page. By default on the team site, the Page template option is not available so you can achieve it through us this small customization.

Refer article: Create modern page using defined template

string PageLibName = "Site Pages";
string PageName = "demo-page.aspx";
SPUser PageAuthor = "<Pass SPUser Object>";
string SiteURL = "<Pass Site URL>";
using (SPSite oSPsite = new SPSite(SiteURL))
    using (SPWeb oWeb = oSPsite.OpenWeb())
        SPList oList = oWeb.Lists[PageLibName];
        SPListItem oItem = oList.RootFolder.Files.Add(String.Format("{0}/{1}", oList.RootFolder.ServerRelativeUrl, PageName), SPTemplateFileType.ClientSidePage).ListItemAllFields;
        oItem["Title"] = System.IO.Path.GetFileNameWithoutExtension(PageName);
        oItem["ContentTypeId"] = "0x0101009D1CB255DA76424F860D91F20E6C4118";
        oItem["ClientSideApplicationId"] = "b6917cb1-93a0-4b97-a84d-7cf49975d4ec";
        oItem["PageLayoutType"] = "Article";

        //Promoted State 2 is for News and 0 for Generic Page
        oItem["PromotedState"] = 2;

        //comment below if you don't want to change page author or editor -- Created by and Modfied by field
        oItem[SPBuiltInFieldId.Author] = oWeb.EnsureUser(PageAuthor.LoginName);
        oItem[SPBuiltInFieldId.Editor] = oWeb.EnsureUser(PageAuthor.LoginName);
        //this is also key factor while create the page , you can change it if you want custom page layout. 
        oItem["CanvasContent1"] = "<div> </div>";

        //False to enable comment and True if you wanted to disable the comment