AddWebPartsToPage-Part.cs

try
{
    // Get the limitedWebPartManager of the page layout file.
    using (SPLimitedWebPartManager wpManager = page.File.GetLimitedWebPartManager(PersonalizationScope.Shared))
    {
        // cycle through each web part and get the different attributes
        foreach (XPathNavigator webPartConfiguration in pageLayoutConfiguration.Select("WebPart"))
        {
            string errorMsg = null;
            string webPartFilename = webPartConfiguration.GetAttribute("FileName", "");
            string webPartType = webPartConfiguration.GetAttribute("Type", "");
            string webPartFilepath = properties.Definition.RootDirectory + "\\" + webPartConfiguration.GetAttribute("FileName", "");
            string webPartUniqueID = webPartConfiguration.GetAttribute("Id", "").ToLower();
            string webPartZoneID = webPartConfiguration.GetAttribute("ZoneId", "");
            int webPartZoneIndex = Convert.ToInt32(webPartConfiguration.GetAttribute("Index", ""));
             // if the web part comes from a definition, open the .webpart or .dwp definition file
            if (webPartType == "Definition")
            {
                // Import the webpart into memory by loading the webpart definition file
                FileStream wpFileStream = new FileStream(webPartFilepath, FileMode.Open,
                                                         FileAccess.Read);
                XmlTextReader wpXmlReader = new XmlTextReader(wpFileStream);
                System.Web.UI.WebControls.WebParts.WebPart webPart = wpManager.ImportWebPart(wpXmlReader, out errorMsg);
                if (!string.IsNullOrEmpty(errorMsg))
                {
                    throw new ApplicationException(
                        string.Format("Error importing webPart '{0}': {1}", webPartFilename,
                                      errorMsg));
                }
                 // set the web part ID
                webPart.ID = webPartUniqueID;
                 // add the web part to the web part manager
                wpManager.AddWebPart(webPart, webPartZoneID, webPartZoneIndex);
            }
            // if the web part is a list view part, add it
            else if (webPartType == "ListView")
            {
                ListViewWebPart webPart = new ListViewWebPart();
                string listName = webPartConfiguration.GetAttribute("ListName", "");
                SPList list = web.Lists[listName];
                webPart.ListName = list.ID.ToString("B").ToUpper();
                webPart.ZoneID = webPartZoneID;
                 wpManager.AddWebPart(webPart, webPartZoneID, webPartZoneIndex);
            }
            else if (webPartType == "Members")
            {
                // TODO: add code to create a site members web part and add it to the page
            }
        }
    }
     // Update the list item.
    page.Update();
     // Check in and publish the page layout.
    string fileOperationMessage = properties.Definition.GetTitle(System.Threading.Thread.CurrentThread.
        CurrentCulture) + ": WebPart configuration.";
    page.File.CheckIn(fileOperationMessage);
    page.File.Publish(fileOperationMessage);
}