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Write Text To File In Visual Basic

There are many ways to write text or string to a file. In this tutorial, we are going to use StreamWriter class and StringBuilder class.

StreamWriter is designed for character output in a particular encoding, whereas classes derived from Stream are designed for byte input and output.

StringBuilder class represents a string-like object whose value is a mutable sequence of characters.

Required Preferences

  • System.Runtime.Extensions.dll for StreamWriter class
  • System.Runtime.dll for StringBuilder class

Procedure

  • Open Visual Studio (Visual Studio 2019)
  • Create new Windows Forms App (.NET Framework) for Visual Basic then click next
  • Set the project name to WriteTextToFileVB, the location where to save the project, the solution name will automatically set but this can be set to any name example "Tutorials", set the framework (.NET Framework 4.7.2) or framework 1.1 or higher then click create

  • The new project will be display in few seconds

  • Rename the default form from Form1 to FormMain by renaming this at the project explorer or properties window at the right side then add 1 button control and 1 textbox control by click and dragging from the toolbox window on the left side to the FormMain

  • Arrange the button and textbox controls accordingly. Set FormMain.Text property to "Text To File Writer" and set FormMain.StartPosition to "CenterScreen". Set the button Name property to "ButtonWrite" and Text property to "Write To File". Then, set the textbox Name property to "TextContainer", Multiline property to "True" and set the textbox ScrollBars property to "Vertical" 

  • Double click the ButtonWrite control to view and add code in the click event of the button control. The source code is available at the end of the page

  • Then run the program

  • Save the this project for the future tutorials
  • That's all. I hope that you enjoy my tutorials. Subscribe to this page for more.

Code

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Public Class FormMain

    Private Sub ButtonWrite_Click(sender As Object, e As EventArgs) Handles ButtonWrite.Click

        'Create new instance of SaveFileDialog
        Dim dlgSaveFile As New SaveFileDialog

        'Create InitialDirectory variable and get the My Documents folder path
        Dim InitialDirectory As String = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)

        'Start call on dlgSaveFile to optimize the coding
        With dlgSaveFile

            'Set the initial directory
            .InitialDirectory = InitialDirectory

            'Set the file extention to filter as text file
            .Filter = "Text files (*.txt)|*.txt;"

            'Set the restore directory
            .RestoreDirectory = True

            'Show the SaveFileDialog then check if the Save button was selected
            If .ShowDialog = DialogResult.OK Then

                'Create new instance of StreamWriter and create file
                Using TextStreamWriter As New IO.StreamWriter(.FileName, False)

                    'Write the TextboxContianer content to file
                    TextStreamWriter.Write(TextBoxContainer.Text)

                    'Close the StreamWriter
                    TextStreamWriter.Close()

                End Using
            Else

                'If Cancel button was click then
                'Do nothing

            End If

        End With

    End Sub
End Class


Download WriteTextToFileVB Project


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