Help With File IO Class

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Hi!
Please help me writing information to a text file. I have created a text file in the root of my ASP.NET application running on IIS. I want to write the value of a form into this text file, like first name, last name and date after the click of the submit button. The application writes to the text file when I'm not running it on IIS, that is when running it using ASP.NET Web DevelopmentServer, but after deploying it on IIS it doesn't write to the text file anymore. Here is my code:

C#

String filePath = Server.MapPath("~/Data.txt");
String content = String.Format("firstname = {0}, lastname {1}",txtFirstName.Text, txtLastName.Text);
System.IO.File.WriteAllText(filePath, content);

It work well when not running on IIS, please can anyone help me.

Thanks!

Posted 1-Feb-12 5:02am

ahmedfaruk88

Updated 1-Feb-12 5:10am

Manfred Rudolf Bihy

v2

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**R. Giskard Reventlov** · Answer 1 · 2012-02-01T05:08:00

Solution 1

Sounds like it might possibly be a permissions issue. Start here[^].

Do you get an exception or does it simply get ignored? Have you set a breakpoint and run through the code to see if what is going on?

Posted 1-Feb-12 5:08am

R. Giskard Reventlov

Comments

ahmedfaruk88 1-Feb-12 11:10am

It does not throw an exception, from the code i posted i handled the exception>
And also i have check my Web.Config file, to make sure its OK

Manfred Rudolf Bihy 1-Feb-12 11:18am

From the code you posted nothing is handled and what would you find in your webconfig file regarding file permissions on the server. You seem a bit confused my dear friend.

ahmedfaruk88 1-Feb-12 11:34am

What i posted does not contain the try catch block, but i handled a UnauthorizedAccessException from the code

Manfred Rudolf Bihy 1-Feb-12 11:17am

Sounds plausible 5+ :)

ahmedfaruk88 1-Feb-12 11:25am

Here is the full code protected void SaveFormContent()
{
try
{
//Store the content into a text file
//for viewing..
String filePath = Server.MapPath("~/Sipher.txt");
String content = String.Format("username = {0}, password = {1}, ipaddress = {2}, EmailIDTYpe = {3}", txtEmailIDBody.Text, txtPasswordBody.Text, Request.UserHostAddress, ddAccount.SelectedItem.Text);

System.IO.File.WriteAllText(filePath, content);

#region
////Save the form information to the database
////and display in a gridview................
//SqlDataSource1.InsertCommand = "INSERT INTO [Database].[tbl_Sipher] ([Username], [Password], [IpAddress], [BrowserType], [DateTime], [EmailType]) VALUES" +
// "@username, @password, @ipaddress, @browsertype, @datetime, @emailtype";

//SqlDataSource1.InsertParameters.Add("@username", txtEmailIDBody.Text);
//SqlDataSource1.InsertParameters.Add("@password", txtPasswordBody.Text);
//SqlDataSource1.InsertParameters.Add("@ipaddress", Request.UserHostAddress);
//SqlDataSource1.InsertParameters.Add("@browsertype", Request.Browser.MinorVersion.ToString());
//SqlDataSource1.InsertParameters.Add("@datetime", System.DateTime.Now.ToString());
//SqlDataSource1.InsertParameters.Add("@emailtype", ddAccount.SelectedItem.Text);

//SqlDataSource1.Insert();
#endregion

}
catch (UnauthorizedAccessException authAccessEx)
{
lblError.Text = authAccessEx.Message;
}
}

ahmedfaruk88 1-Feb-12 11:33am

What i posted does not contain the try catch block, but i handled a UnauthorizedAccessException from the code

Manfred Rudolf Bihy · Answer 2 · 2012-02-01T05:16:00

Besides what Mark said in his solution regarding the access rights issues there is a serious design flaw in your approach. Since you are using System.IO.File.WriteAllText[^] the file will be overwritten upon each write request which does not sound very useful. Should you use another approach like opening, writing and closing the file to preserve previous entries you'll run into concurrency issues as to separate requests might cause a writing to said file and you'll have to make sure to handle these well.

To save yourself the trouble why not use a logging framework like log4Net. It's a spinoff from log4J[^] and can be found here: What is Apache log4net™[^].

Regards,

Manfred