以编程方式从 .Webpart 文件导入 WebForm 网站中的 asp.net webPart（不是 sharePoint 项目）

Question

我们已经创建了几个呈现到 Web 部件区域的用户控件 (Ascx)。同样，我们有一个包含在所有 .aspx 页面中实现的 WebPartManager 的控件。

我正在开发一项功能，需要使用文件上传控件在任何页面上导入生成的 .webpart 文件。我正在使用 devExpress fileUpload 控件，并在 FileUploadComplete 事件执行下面提到的代码时。代码运行没有任何错误，但也不会在指定区域中显示任何 Web 部件。哪里有问题。

 protected void WebPartUploadControl_FileUploadComplete(object sender, FileUploadCompleteEventArgs e)
        {
            string ErrorMessge = string.Empty;
            if (e.UploadedFile.IsValid)
            {
                var xmlReader = XmlReader.Create(e.UploadedFile.FileContent);
                xmlReader.Read();

                System.Web.UI.WebControls.WebParts.WebPart webPart = wpManager.ImportWebPart(xmlReader, out ErrorMessge);

                       wpManager.AddWebPart(webPart, wpManager.Zones["Zone5"], 1);
            }


        }

我可能遗漏了一些基本代码。如果有人知道答案，请提供帮助。谢谢.

Answer 1

我终于想通了。以防万一以后有人遇到类似的问题，这会有所帮助。

所以，这里的问题是 Devexpress File-Upload 控件是一个 ajax 控件，进行部分回发，因此不会更新超出其范围的页面的 CatalogZone。

处理方法是：

创建一个新的 .WebPart 文件并克隆上传文件的内容。
Re-direct 到触发 Page_Load 事件的同一页面
在page_Load事件中执行上述代码，以便导入。

下面是解释的代码：

WebPartUploadControl_FileUploadComplete

        protected void WebPartUploadControl_FileUploadComplete(object sender, FileUploadCompleteEventArgs e)
        {

String WebPartFilePath = Server.MapPath("DirectoryWhereYouWantTosaveCloneFile");
            String WebPartFileName = "NameOfYourCloneFile.WebPart";
            
            string FileContent = string.Empty;

            Creating Directory to store data of uploaded file(.webPart).

            Session["ImportWebPartFilePath"] = $"{WebPartFilePath}/{WebPartFileName}";
            if (!Directory.Exists(WebPartFilePath))
            {
                Directory.CreateDirectory(WebPartFilePath);
            }

            Reading Uploaded file Data

            using (StreamReader sr = new StreamReader(e.UploadedFile.FileContent))
            {
                FileContent = sr.ReadToEnd();
            }

            //Copying File Data to the newly Created file 

            if (!File.Exists(Session["ImportWebPartFilePath"].ToString()))
            {
                File.AppendAllText(WebPartFilePath + "/" + WebPartFileName, FileContent);
            }

            e.CallbackData = "Page Settings Imported Successfully.";

            // Response.Redirect(Request.RawUrl) does not work in while ajax callback in 
               devexpress
            // Creating a callback to current page to trigger Page_Load event.

            DevExpress.Web.ASPxWebControl.RedirectOnCallback(this.Request.Path);
}

Page_Load

if (Session["ImportWebPartFilePath"] != null)
            {
                //Import Webpart Settings
                ImportWebPartsToCurrentPage(Session["ImportWebPartFilePath"].ToString());
                File.Delete(Session["ImportWebPartFilePath"].ToString());
                Session["ImportWebPartFilePath"] = null;

            }

ImportWebPartsToCurrentPage

 private void ImportWebPartsToCurrentPage(String FilePath)
        {
            string ErrorMessge = string.Empty;
            //Extracting All WebParts in the file
            XDocument WebPartXml = XDocument.Load(FilePath);

            //Spliting the each webpart.
            var WebPartDescriptions = WebPartXml.Root.Elements();
            try
            {
                foreach (var WebPartDescription in WebPartDescriptions)
                {
                    var xmlReader = XmlReader.Create(new StringReader(WebPartDescription.ToString()));
                    xmlReader.Read();
                    // Adding Webpart to page Catalog.
                    System.Web.UI.WebControls.WebParts.WebPart webPart = wpManager.ImportWebPart(xmlReader, out ErrorMessge);
                    //Adding webpart to the page.
                    if (!wpManager.WebParts.Contains(webPart))
                    {
                        wpManager.AddWebPart(webPart, wpManager.Zones["ZoneName"], 0);
                    }
                }
            }
            catch (Exception ex)
            {
                Response.Write(ex);

            }
        }

以编程方式从 .Webpart 文件导入 WebForm 网站中的 asp.net webPart（不是 sharePoint 项目）

Importing a asp.net webPart in WebForm website from .Webpart file programmatically (Not a sharePoint Project)

asp.net

import

webforms

devexpress

web-parts