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Write into a Text File Line-By-Line

Posted Date: 20 Jun 2008	Resource Type: Code Snippets	Category: File Operations
Author: Bharathi	Member Level: Diamond
Rating:	Points: 5

The sample code is a simple ASP.NET application that writes the contents of a TextBox into a .txt file. The code behind page is simple - it contains a form with a text box and a button. On click of a Button, the TextBox value has to be written line by line to a textfile.

The code behind file tries to create the text file if it does not exist. And then appends the contents of the TextBox into the file.

The code and design are shown below:

Design:


<body>
    <form id="form1" runat="server">
    <div>
       <asp:TextBox ID="txt" runat="server"></asp:TextBox>
    </div>
    <div>
        <asp:Button ID="btn" runat="server" OnClick="btn_Click" Text="Write to a Text File" Width="153px"/>
    </div>
    </form>
</body>

Code behind file (.cs):


 protected void btn_Click(object sender, EventArgs e)
    {
        StreamWriter s = null;
        if (File.Exists("h://TEST.txt"))
        {
            s = new StreamWriter("h://TEST.txt", true);
        }
        s.WriteLine(txt.Text);
        s.Close();
    }

Attachments

Design Page (19013-2054-WriteaFile-TextFile.aspx.txt)

Code Behind File (19013-2055-WriteaFile-TextFile.aspx.cs.txt)

Responses

Author: RamyaNaidu 06 Aug 2008 Member Level: Silver Points : 2

Dim writer As StreamWriter = File.CreateText("E:\myfile.txt")
writer.WriteLine("Out to file.")
writer.Close()

Dim str As String = "Text data"
Dim num As Integer = 123
Dim binWriter As New BinaryWriter(File.OpenWrite("E:\myfile.dat"))
binWriter.Write(str)
binWriter.Write(num)
binWriter.Close()

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