How to insert TEXT into an existing .txt file, everytime they click on the LOGIN button? With out deleting any existing text in the file. TY =D

thiago costa

Hello there, I have a code below, ... When you click on that BUTTON(the code button) I would like to be able to INSERT
TIME , DATE , and IP, into a TEXT file, into the next empty line, with out deleting what was inside of the text file, and then, upload that text file somewhere, .... I am going to give this software to about 14 people, and I would like to log each time they log in to it. Any other ideas? if not, how do I do this? ...

Thank you in advance for your help.

private void buttonLogin_Click(object sender, EventArgs e)
        {
            string password = textBoxPassword.Text;
            if (SQLDataAccess.ValidateConnection("Account", password) == true)
            {
                SQLDataAccess.Password = password;
                MessageBox.Show("Login Successful");
                textBoxPassword.Text = "";
                textBoxPassword.UseSystemPasswordChar = false;
                FormCollection fc = Application.OpenForms;

                foreach (Form ff in fc)
                {

                    if (ff.Name == "Form1")
                    {
                        ((Form1)(ff)).label1.Text = "Input Box";
                    }

                }


            }
            else
            {
                MessageBox.Show("Login failed");
            }
        }

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

jinge17y ago
Accepted answer
This is the second time, I answered other's question. However, my answer is not accepted as answer. It makes me frustrated and do not want to contribute to this forum any more.
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thiago costa17y ago
I am sorry I am a noob here, I just found out how to accept it. I am so sorry it took me for ever to accept it. I didn't know.

From now on I will not forget. I am so sorry.

And thank you once again.
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thiago costa17y ago
Thank you ALL guys

Here is the code: static void Main(string[] args) { FileStream fs = new FileStream("log.txt", FileMode.Append, FileAccess.Write); StreamWriter sw = new StreamWriter(fs); sw.WriteLine("append me"); sw.Close(); }

That method worked very well with my code =D Thank you Lots.
Thank you all !
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Roei Bar17y ago

another optional way for writing to Text which is better if you also want to know the current lines information in the file

 List textList = new List();
textList.AddRange(File.ReadAllLines(filepath);
// Insert your new text here
textList.Insert(0, newTextLine);   
// Write to file         
File.WriteAllLines(filepath, textList.ToArray());

Roei Bar17y ago

you can use this code for this:

 private void file_append()
 {
   string path="D:\\Temp\\My Documents\\";           // Parent Directory
   string name=TextBox1.Text;
   string ext=".txt";
   string fname=path+name+ext;
   FileInfo file1=new FileInfo(fname);
   StreamWriter sw=File.AppendText(file1)
   sw.WriteLine("This is a demo for appending text content to a  file");       
                                                                                      // Writing a string directly to the file
   sw.WriteLine(TextBox2.Text);		 // Writing content read from the textbox in the form
   sw.Close();
 }

jinge17y ago
Here is the code: static void Main(string[] args) { FileStream fs = new FileStream("log.txt", FileMode.Append, FileAccess.Write); StreamWriter sw = new StreamWriter(fs); sw.WriteLine("append me"); sw.Close(); }
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