Read and import CSV file on Aspx Page and display results in HTML Table in ASP.Net

Here I have created sample that will help you out.

NameSpace

<%@ Import Namespace="System.IO" %>

HTML with C#

<div>
    <table border="1" cellpadding="0" cellspacing="0">
        <%
            foreach (string line in File.ReadAllLines(Server.MapPath("~/CSVs/1.csv")))
            {
        %>
        <tr>
            <%
                foreach (var item in line.Split(','))
                {
            %>
            <td>
                <div align="center">
                    <%=item%>
                    <br>
                </div>
            </td>
            <%
                }
                          
            %>
        </tr>
        <%
            }
        %>
    </table>
</div>

HTML with VB

<div>
    <table border="1" cellpadding="0" cellspacing="0">
        <%
            For Each line As String In File.ReadAllLines(Server.MapPath("~/CSVs/1.csv"))
        %>
        <tr>
            <%
                For Each item As String In line.Split(","c)
            %>
            <td>
                <div align="center">
                    <%=item%>
                    <br>
                </div>
            </td>
            <%
            Next
            %>
        </tr>
        <%
        Next
        %>
    </table>
</div>

1.csv

1,2,3,4

2,4,6,8

3,6,9,12

4,8,12,16

5,10,15,20

Screenshot