 Creating a student attendance portal involves a combination of HTML for the front-end and C# for the back-end. Here's a simplified example of HTML and C# code to get you started. This example uses ASP.NET for the server-side functionality.

1. HTML for the Front-End (index.html):

```html
<!DOCTYPE html>
<html>
<head>
    <title>Student Attendance Portal</title>
</head>
<body>
    <h1>Welcome to the Student Attendance Portal</h1>
    <form action="SubmitAttendance.aspx" method="post">
        <label for="studentName">Student Name:</label>
        <input type="text" id="studentName" name="studentName" required><br><br>

        <label for="date">Date:</label>
        <input type="date" id="date" name="date" required><br><br>

        <label for="status">Attendance Status:</label>
        <select id="status" name="status" required>
            <option value="Present">Present</option>
            <option value="Absent">Absent</option>
        </select><br><br>

        <input type="submit" value="Submit Attendance">
    </form>
</body>
</html>
```

2. C# Back-End (SubmitAttendance.aspx.cs):

```csharp
using System;
using System.Web.UI;

public partial class SubmitAttendance : Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack)
        {
            // Retrieve data from the form
            string studentName = Request.Form["studentName"];
            string date = Request.Form["date"];
            string status = Request.Form["status"];

            // Perform database operations or store attendance data as needed
            // For this example, we'll just display the information
            Response.Write($"Attendance submitted for Student: {studentName}<br>");
            Response.Write($"Date: {date}<br>");
            Response.Write($"Status: {status}");
        }
    }
}
```

This is a simplified example to get you started. In a real-world scenario, you would typically connect to a database to store and retrieve attendance data securely. Additionally, you may want to implement user authentication and authorization to ensure that only authorized individuals can submit attendance.

Make sure to set up your development environment with ASP.NET to run this code.

created 1 year ago

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About HTML

HTML(Hyper Text Markup language) is the standard markup language for Web pages, was created by Berners-Lee in the year 1991. Almost every web page over internet might be using HTML.

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Fundamentals

Any HTML document must start with document declaration <!DOCTYPE html>
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Headings are defined with <h1> to <h6> where <h1> is the highest important heading and <h6> is the least important sub-heading.
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HTML Elements and Attributes

HTML element is everything present from start tag to end tag.
The text present between start and end tag is called HTML element content.
Anything can be a tagname but it's preferred to put the meaningful title to the content present as tag name.
Do not forget the end tag.
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```

CSS

CSS(cascading style sheets) describes how HTML elements will look on the web page like color, font-style, font-size, background color etc.

Example:

Below is a sample style sheet which displays heading in green and in Candara font with padding space of 25px.

body{
  padding: 25px;
}
.title {
	color: #228B22;
	font-family: Candara;
}

HTML Tables

HTML Tables are defined in <table> tag.
Table row should be defined in <tr> tag
Table header should be defined in <th> tag
Table data should be defined in <td> tag
Table caption should be defined in <caption> tag

HTML-Javascript

Javascript is used in HTML pages to make them more interactive.
<script> is the tag used to write scripts in HTML
You can either reference a external script or write script code in this tag.

Example

<script src="script.js"></script>