Question

i want to print my input file data to textbox but it shows error here is code

 private void richTextBox1_TextChanged(object sender, EventArgs e)
    {
        File.WriteAllLines(file1, richTextBox1.Text);  // file1 is my input file

    }

errors are:

// Error 3 Argument 1: cannot convert from 'System.Collections.Generic.List<string>' to 'string'
// Error 4 Argument 2: cannot convert from 'string' to 'System.Collections.Generic.IEnumerable<string>'

So my question is that how to convert list to string and string to IEnumerable<string>?

  private void button1_Click(object sender, EventArgs e)
    {
        try
        {
            OpenFileDialog fdlg = new OpenFileDialog();
            fdlg.Title = ".cs File Detector";
            fdlg.InitialDirectory = @"c:\";
            fdlg.Filter = "cs files (*.cs)|*.cs";
            fdlg.FilterIndex = 2;
            fdlg.RestoreDirectory = true;
            if (fdlg.ShowDialog() == DialogResult.OK)
            {
                textBox1.Text = fdlg.FileName;
            }
        }
        catch (Exception eee)
        {
            MessageBox.Show(eee.ToString());
        }

    }

I am calling file from here so now shall do the same thing to readtext for text box?

Answer 1

You want to read, not write:

richTextBox1.Text = File.ReadAllText(textBox1.Text);