A txt file using c# net

Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Note The files that are used in this example are created in the topic How to write to a text file.

WriteAllTextAsync which:. There are additional conditions that may cause exceptions when working with the file system, it is best to program defensively.

Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Open Test1. For all file manipulations, it's good programming practice to wrap the code inside a try-catch-finally block to handle errors and exceptions. Specifically, you may want to release handles to the file in the final block so that the file isn't locked indefinitely.

Some possible errors include a file that doesn't exist, or a file that is already in use. Skip to main content. This browser is no longer supported.

Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Now add the below code to add textbox text into the text file. WriteToTextFile message ;. ToString ;. MapPath logFilePath. MapPath logFilePath ;. MapPath logFilePath , true ;. Close ;. Net Code:. Imports System. Namespace WebApplication7. Partial Public Class WebForm Inherits System. End Sub. WriteToTextFile message. Catch ex As Exception.

End Try. If Not Directory. End If. If Not File. MapPath logFilePath Then.