Shubham Ankit

Shubham Ankit

1547880458

How to use FileUpload control inside ASP.Net AJAX Update Panel

There are plenty of questions asked by developers around the globe that they are not able to use FileUpload asp.net control inside ASP.Net Ajax update panel. Their issues are FileUpload control inside Asp.Net Ajax update panel doesn’t hold any file and also return false for HasFile property whenever they upload any file.

Don’t worry! This is because the uploading and manipulations of files are restricted by default in client side for security purpose. That’s why this is not possible to upload files using asynchronous postback in UpdatePanel. you can do it just by changing the Trigger of the upload button from AsyncPostBackTrigger to PostBackTrigger.

Note – Asp.Net Controls that are reside in updatepanel, cause an async postback/update by default. That’s why the page will postback and get partial rendering. Now if for any reason you have control inside an updatepanel which you have to make a full postback rendering, then you need to set it explicitly as a postbacktrigger.

ASP.Net Webform(Aspx) Code :

To use ASP.Net Ajax, you have to add reference ajaxcontroltoolkit.dll in your solution first then you can use below code to upload a file.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="FileUpload.aspx.cs" Inherits="Open_FileUpload" %>
<!DOCTYPE html>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxtoolkit" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager>  
        <div>
            <asp:UpdatePanel ID="up1" runat="server">
                <ContentTemplate>
                    <asp:FileUpload ID="fileUpload" runat="server" />
                    <asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click" />
                    <br />
                    <asp:Label ID="lblMsg" runat="server" Text=""></asp:Label>
                </ContentTemplate>
                <Triggers>
                    <asp:PostBackTrigger ControlID="btnUpload" />
                </Triggers>
            </asp:UpdatePanel>
        </div>
    </form>
</body>
</html>

Code behind .cs code :

For demo purpose, I am trying to allow the user to upload only jpg or jpeg images.

protected void btnUpload_Click(object sender, EventArgs e)
    {
        string filePath = string.Empty;
        if (fileUpload.HasFile)
        {
            string fileExt = System.IO.Path.GetExtension(fileUpload.FileName);
            if (fileExt.ToLower() != ".jpg" && fileExt.ToLower() != ".jpeg")
            {
                lblMsg.Text = "Upload JPG images only.";
                lblMsg.ForeColor = System.Drawing.Color.Red;
                return;
            }            
            filePath = fileUpload.PostedFile.FileName;
            if (File.Exists(filePath))
            {
                File.Delete(filePath);
            }
            fileUpload.PostedFile.SaveAs(Server.MapPath(@"../UploadedImages/" + filePath.Trim()));          
        }


by RAVI RANJAN KUMAR


#asp.net

What is GEEK

Buddha Community

Einar  Hintz

Einar Hintz

1602560783

jQuery Ajax CRUD in ASP.NET Core MVC with Modal Popup

In this article, we’ll discuss how to use jQuery Ajax for ASP.NET Core MVC CRUD Operations using Bootstrap Modal. With jQuery Ajax, we can make HTTP request to controller action methods without reloading the entire page, like a single page application.

To demonstrate CRUD operations – insert, update, delete and retrieve, the project will be dealing with details of a normal bank transaction. GitHub repository for this demo project : https://bit.ly/33KTJAu.

Sub-topics discussed :

  • Form design for insert and update operation.
  • Display forms in modal popup dialog.
  • Form post using jQuery Ajax.
  • Implement MVC CRUD operations with jQuery Ajax.
  • Loading spinner in .NET Core MVC.
  • Prevent direct access to MVC action method.

Create ASP.NET Core MVC Project

In Visual Studio 2019, Go to File > New > Project (Ctrl + Shift + N).

From new project window, Select Asp.Net Core Web Application_._

Image showing how to create ASP.NET Core Web API project in Visual Studio.

Once you provide the project name and location. Select Web Application(Model-View-Controller) and uncheck HTTPS Configuration. Above steps will create a brand new ASP.NET Core MVC project.

Showing project template selection for .NET Core MVC.

Setup a Database

Let’s create a database for this application using Entity Framework Core. For that we’ve to install corresponding NuGet Packages. Right click on project from solution explorer, select Manage NuGet Packages_,_ From browse tab, install following 3 packages.

Showing list of NuGet Packages for Entity Framework Core

Now let’s define DB model class file – /Models/TransactionModel.cs.

public class TransactionModel
{
    [Key]
    public int TransactionId { get; set; }

    [Column(TypeName ="nvarchar(12)")]
    [DisplayName("Account Number")]
    [Required(ErrorMessage ="This Field is required.")]
    [MaxLength(12,ErrorMessage ="Maximum 12 characters only")]
    public string AccountNumber { get; set; }

    [Column(TypeName ="nvarchar(100)")]
    [DisplayName("Beneficiary Name")]
    [Required(ErrorMessage = "This Field is required.")]
    public string BeneficiaryName { get; set; }

    [Column(TypeName ="nvarchar(100)")]
    [DisplayName("Bank Name")]
    [Required(ErrorMessage = "This Field is required.")]
    public string BankName { get; set; }

    [Column(TypeName ="nvarchar(11)")]
    [DisplayName("SWIFT Code")]
    [Required(ErrorMessage = "This Field is required.")]
    [MaxLength(11)]
    public string SWIFTCode { get; set; }

    [DisplayName("Amount")]
    [Required(ErrorMessage = "This Field is required.")]
    public int Amount { get; set; }

    [DisplayFormat(DataFormatString = "{0:MM/dd/yyyy}")]
    public DateTime Date { get; set; }
}

C#Copy

Here we’ve defined model properties for the transaction with proper validation. Now let’s define  DbContextclass for EF Core.

#asp.net core article #asp.net core #add loading spinner in asp.net core #asp.net core crud without reloading #asp.net core jquery ajax form #asp.net core modal dialog #asp.net core mvc crud using jquery ajax #asp.net core mvc with jquery and ajax #asp.net core popup window #bootstrap modal popup in asp.net core mvc. bootstrap modal popup in asp.net core #delete and viewall in asp.net core #jquery ajax - insert #jquery ajax form post #modal popup dialog in asp.net core #no direct access action method #update #validation in modal popup

Hire ASP.Net Developers

Looking to outsource your asp dot net development requirement?

ASP.Net is a special feature of the DOT Net framework created by Microsoft. At HourlyDeveloper.io, we have a team of experienced ASP.Net developers who are experts in delivering custom solutions based on your business requirements. Hire ASP.Net Developers who will provide tailored solutions to facilitate your business growth.

Consult with experts: https://bit.ly/3fNpVqr

#hire asp.net developers #asp.net development company #asp.net development services #asp.net development #asp.net developer #asp.net

Einar  Hintz

Einar Hintz

1602564619

MVC User Registration & Login with ASP.NET Core Identity

User registration and authentication are mandatory in any application when you have little concern about privacy. Hence all most all application development starts with an authentication module. In this article, we will discuss the quickest way to use **ASP.NET Core Identity for User Login and Registration **in a new or existing MVC application.

Sub-topics discussed :

  • How to add ASP.NET Core Identity to MVC application.
  • Customize ASP.NET Core Identity.
  • Identity.UI Design Customization.
  • Next step.

Background

ASP.NET Core Identity is an API, which provides both user interface(UI) and functions for user authentication, registration, authorization, etc. Modules/ APIs like this will really be helpful and fasten the development process. It comes with ASP.NET Core Framework and used in many applications before. Which makes the API more dependable and trustworthy.

ASP.NET Core MVC with user authentication can easily be accomplished using Identity.UI. While creating the MVC project, you just need to select Authentication as Individual User Accounts.

Showing how to create an MVC application with ASP.NET Core Identity API

The rest will be handled by ASP.NET Core Identity UI. It already contains razor view pages and backend codes for an authentication system. But that’s not what we want in most of the cases. we want to customize ASP.NET Core Identity as per our requirement. That’s what we do here.

Create an ASP.NET Core MVC Project

First of all, I will create a brand new ASP.NET Core MVC application without any authentication selected. We could add ASP.NET Core Identity later into the project.

In Visual Studio 2019, Go to File > New > Project (Ctrl + Shift + N). From new project window, select ASP.NET Core Web Application.

Create an ASP.NET Core Web application

Once you provide the project name and location. A new window will be opened as follows, Select _Web Application(Model-View-Controller), _uncheck _HTTPS Configuration _and DO NOT select any authentication method. Above steps will create a brand new ASP.NET Core MVC project.

Select Model View Controller templet under .NET Core

#asp.net core article #asp.net core #add asp.net core identity to existing project #asp.net core identity in mvc #asp.net core mvc login and registration #login and logout in asp.net core

ASP.Net Web development Company USA | WebClues Infotech

A versatile Web & Mobile App Development framework technology that is fast, reliable, and easy to use is ASP.NET. ASP.NET gives the developer complete control over development and can be used on any project big or small.

Want to develop a website or mobile app with ASP.NET?

WebClues Infotech with years of experience and a highly skilled development team can be your go-to agency for your Web & Mobile App Development requirements. With an expert developer team of more than 150+ members, WebClues Infotech has successfully delivered more than 1500 projects worldwide.

Want to know more about the ASP.NET framework?

Visit: https://www.webcluesinfotech.com/asp-net-web-development/

Share your requirements https://www.webcluesinfotech.com/contact-us/

View Portfolio https://www.webcluesinfotech.com/portfolio/

#asp.net web development company #asp.net web development company usa #asp.net development company in india #asp.net development company #.net software development company #hire asp.net developer

Hire Dedicated ASP.NET Developers | ASP.NET Web Development Company

A universally accepted and the most popular framework that can be used for a small or big websites or Web application development projects is the ASP.NET. This framework is majorly used to produce an interactive and data driven web applications.

Are you looking to use an ASP.NET framework for your development needs?

WebClues Infotech offers a dedicated ASP.NET developers where a business can hire a dedicated ASP.NET developer that matches their project requirement. WebClues Infotech also has a flexible pricing structure that suits most project or business requirements.

Want to hire a dedicated ASP.NET developers?

Share your requirements here https://www.webcluesinfotech.com/contact-us/

Book Free Interview with ASP.NET developer: https://bit.ly/3dDShFg

#hire dedicated asp.net developers #hire asp.net developers #hire .net developers #full-stack .net developers india #dedicated .net programmers india #hire asp.net developers or programmers