Connor Mills

Connor Mills

1550637121

How can I keep asp:button from reloading the page?

I have multiple asp:buttons in my application that reload the page whenever they are clicked. How do I resolve this behavior while still allowing the function of the button to work? Besides looking weird when the page reloads, I have a tab style navigation section that defaults back to the first tab every time a button is clicked. Here's an example of one button and the C# code that goes with it.

HTML/ASPX

<asp:Button ID="uxRequestFEMAResponseBtnT3" runat="server" Text="Generate Interim Response Email" OnClick="uxRequestFEMAResponseBtnT3_Click" />
&nbsp;<asp:TextBox ID="uxFEMARequestDateTxtBox" runat="server" style="color: red; text-align:center;"></asp:TextBox>

C#

protected void uxRequestFEMAResponseBtnT3_Click(object sender, EventArgs e)
    {
        String today = DateTime.Now.ToString("dd/MM/yyyy");
        uxFEMARequestDateTxtBox.Text = today;
    }

What I've tried so far: I have tried multiple fixes to resolve this issue. I initially thought I could resolve it by wrapping the entire body section (which includes all of the buttons) in a <asp:UpdatePanel ID="UpdatePanel1" runat="server">...'', but that did not work. Second, I tried just adding AutoPostBack="False" inside the <asp:Button..> tag, but nothing changed. I then changed all of the asp: buttons to simple html <input type="button"...> with the same onClick event. This stopped the reload, but the functionality (adding DateTime to the textbox in the C#) no longer worked. I've seen several possible jQuery solutions, but I am not sure if that will resolve my issue either. I am pretty new to ASP.NET but this seems like a common problem that anyone using the Web.Controls.UI buttons would run into. Any suggestions as to how to resolve this?

#c-sharp #asp.net

What is GEEK

Buddha Community

Charles Cooper

1550654123

few questions,

  • Have you added the script manager and configured your button using RegisterAsyncPostBackControl method on page load?
  • AutoPostBack should be always true. Other wise it will not trigger the server click event.

You can use jQuery. It’ll definitely cover your requirement. But you have to write a web method instead of the button click event.

steps of Jquery

  1. add jquery files and add a class to the button declaration
  2. register the button click event
    $('.button-class').onClick(function()){
        //call to web method
    });


  1. add jquery files and add a class to the button declaration
  2. register the button click event
$.ajax({
        type: 'POST',
        url: 'PageName.aspx/MethodName',
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (msg) {
            if (msg.d) {
                //set your values to the text box
                $('.textbox-classname').val(msg.d.returningvalue);
            }
        },
        error: function () {
            alert("Error! Try again...");
        }
    });

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

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Connor Mills

Connor Mills

1550637121

How can I keep asp:button from reloading the page?

I have multiple asp:buttons in my application that reload the page whenever they are clicked. How do I resolve this behavior while still allowing the function of the button to work? Besides looking weird when the page reloads, I have a tab style navigation section that defaults back to the first tab every time a button is clicked. Here's an example of one button and the C# code that goes with it.

HTML/ASPX

<asp:Button ID="uxRequestFEMAResponseBtnT3" runat="server" Text="Generate Interim Response Email" OnClick="uxRequestFEMAResponseBtnT3_Click" />
&nbsp;<asp:TextBox ID="uxFEMARequestDateTxtBox" runat="server" style="color: red; text-align:center;"></asp:TextBox>

C#

protected void uxRequestFEMAResponseBtnT3_Click(object sender, EventArgs e)
    {
        String today = DateTime.Now.ToString("dd/MM/yyyy");
        uxFEMARequestDateTxtBox.Text = today;
    }

What I've tried so far: I have tried multiple fixes to resolve this issue. I initially thought I could resolve it by wrapping the entire body section (which includes all of the buttons) in a <asp:UpdatePanel ID="UpdatePanel1" runat="server">...'', but that did not work. Second, I tried just adding AutoPostBack="False" inside the <asp:Button..> tag, but nothing changed. I then changed all of the asp: buttons to simple html <input type="button"...> with the same onClick event. This stopped the reload, but the functionality (adding DateTime to the textbox in the C#) no longer worked. I've seen several possible jQuery solutions, but I am not sure if that will resolve my issue either. I am pretty new to ASP.NET but this seems like a common problem that anyone using the Web.Controls.UI buttons would run into. Any suggestions as to how to resolve this?

#c-sharp #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

Rusty  Bernier

Rusty Bernier

1592377035

What's This and Can I Delete It? Examining a Default ASP.NET Core MVC

Let’s delete a bunch of extra files from an ASP.NET Core MVC default project!

#can i delete it? #asp.net core mvc #asp.net core #asp.net #programming