Upload and read text file in asp.net | ASPMANTRA | Asp.Net,MVC,AngularJs,Jquery,Javascript,Sql Server AND WCF snippets and tutorial

Upload and read text file in asp.net

In this article I am going to explain how to upload and read text file in asp.net.


Description:
I want to upload and read the text file. Text file will be save to folder and content of text file will be displayed in textbox.

 Implementation:
HTML markup:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
             <table>
            <tr><td>Upload File :</td><td><asp:FileUpload ID="FileUpload1" runat="server" accept=".txt" /></td></tr>
             <tr><td></td><td><asp:Button ID="Button1" runat="server" Text="Button" /></td></tr>
             <tr><td colspan="2"></td></tr>
             <tr><td colspan="2"><asp:TextBox ID="txtarea" runat="server" TextMode="MultiLine" Width="600px" Height="500px" Visible="false"></asp:TextBox></td></tr>
        </table>
    </div>
    </form>
</body>
</html>

Add namespace
C# Code:
using System.IO;

VB.net Code:
Imports System.IO

On button click write the below given code

C# Code:
protected void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            string filepath = Server.MapPath("~/upload") + Path.GetFileName(FileUpload1.FileName);
            FileUpload1.SaveAs(filepath);
            string text = File.ReadAllText(filepath);
            txtarea.Visible = true;
            txtarea.Text = text;
        }
        catch (Exception ex) { }
    }


VB.net Code:
Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Try
           Dim filepath As String = Server.MapPath("~/upload ") + Path.GetFileName(FileUpload1.FileName)
            FileUpload1.SaveAs(filepath)
            Dim text As String = File.ReadAllText(filepath)
            txtarea.Visible = True
            txtarea.Text = text
        Catch ex As Exception
        End Try
    End Sub    End Sub




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