Problem with C# File IO in Winforms

Question

I'm having issues with a C# Winforms file IO. The code complies just fine, but then it returns errors on execution.

The output code is here:

private void saveData()
    {
        string fullPath = System.Environment.GetEnvironmentVariable(@"%MyDocuments%\HellsingRPG\");

        StreamWriter writer = new StreamWriter(fullPath + textBox2.Text + ".txt");
        writer.WriteLine(textBox1.Text + "," + textBox2.Text + "," + textBox3.Text + "," + textBox4.Text + "," + comboBox1.SelectedText + "," + 
            numericUpDown25.Value + "," + numericUpDown1.Value + "," + numericUpDown2.Value + "," + numericUpDown3.Value + "," + numericUpDown4.Value + "," +
            numericUpDown5.Value + "," + numericUpDown6.Value + "," + numericUpDown7.Value + "," + numericUpDown8.Value + "," + numericUpDown9.Value + "," +
            numericUpDown10.Value + "," + numericUpDown11.Value + "," + numericUpDown12.Value + "," + numericUpDown13.Value + "," + numericUpDown14.Value
            + "," + numericUpDown15.Value + "," + numericUpDown16.Value + "," + numericUpDown17.Value + "," + numericUpDown18.Value + "," + 
            numericUpDown19.Value + "," + numericUpDown20.Value + "," + numericUpDown21.Value + "," + numericUpDown22.Value);
        writer.Close();
    }

And the code to load the data is here:

private void loadData()
    {
        Stream myStream = null;
        OpenFileDialog openFileDialog1 = new OpenFileDialog();

        openFileDialog1.InitialDirectory = System.Environment.GetEnvironmentVariable(@"%MyDocuments%\HellsingRPG\");
        openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
        openFileDialog1.FilterIndex = 2;
        openFileDialog1.RestoreDirectory = true;

        if (openFileDialog1.ShowDialog() == DialogResult.OK)
        {
            try
            {
                if ((myStream = openFileDialog1.OpenFile()) != null)
                {
                    using (myStream)
                    {
                        List<string> myData = parseCSV(System.Convert.ToString(myStream));
                        textBox1.Text = myData[0];
                        textBox2.Text = myData[1];
                        textBox3.Text = myData[3];
                        textBox4.Text = myData[4];
                        comboBox1.SelectedText = myData[5];
                        numericUpDown25.Value = System.Convert.ToDecimal(myData[6]);
                        numericUpDown1.Value = System.Convert.ToDecimal(myData[7]);
                        numericUpDown2.Value = System.Convert.ToDecimal(myData[8]);
                        numericUpDown3.Value = System.Convert.ToDecimal(myData[9]);
                        numericUpDown4.Value = System.Convert.ToDecimal(myData[10]);
                        numericUpDown5.Value = System.Convert.ToDecimal(myData[11]);
                        numericUpDown6.Value = System.Convert.ToDecimal(myData[12]);
                        numericUpDown7.Value = System.Convert.ToDecimal(myData[13]);
                        numericUpDown8.Value = System.Convert.ToDecimal(myData[14]);
                        numericUpDown9.Value = System.Convert.ToDecimal(myData[15]);
                        numericUpDown10.Value = System.Convert.ToDecimal(myData[16]);
                        numericUpDown11.Value = System.Convert.ToDecimal(myData[17]);
                        numericUpDown12.Value = System.Convert.ToDecimal(myData[18]);
                        numericUpDown13.Value = System.Convert.ToDecimal(myData[19]);
                        numericUpDown14.Value = System.Convert.ToDecimal(myData[20]);
                        numericUpDown15.Value = System.Convert.ToDecimal(myData[21]);
                        numericUpDown16.Value = System.Convert.ToDecimal(myData[22]);
                        numericUpDown17.Value = System.Convert.ToDecimal(myData[23]);
                        numericUpDown18.Value = System.Convert.ToDecimal(myData[24]);
                        numericUpDown19.Value = System.Convert.ToDecimal(myData[25]);
                        numericUpDown20.Value = System.Convert.ToDecimal(myData[26]);
                        numericUpDown21.Value = System.Convert.ToDecimal(myData[27]);
                        numericUpDown22.Value = System.Convert.ToDecimal(myData[28]);
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
            }
        }
    }

And that compiles just fine. But when I use it, I get the following errors:

"Could not find file "C:\Users\collmark\Documents\Visual Studio 2015\Projects\WindowsFormsApplication1\WindowsFormsApplication1\bin\Release\System.IO.Filestream".

"Error: Could not read file from disk. Original error: Index out of range. Must be non-negative and less than the size of the collection. Parameter name: index."

Thanks

Answer 1

your save data seems to save 22 fields while the read expects 28.

I suspect the myData object does not contain the fields index you are trying to read, hence index out of range.

do yourself a favour when printing exception data don't limit yourself to the message but print the whole stack trace, it will tell you which line is faulty giving you a hint at the actual problem.

MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.ToString());