Importing a File with Dynamic Columns

I am new to SSIS and C#. In SQL Server 2008 I am importing data from a .csv file. Now I have the columns dynamic. They can be around 22 columns(some times more or less). I created a staging table with 25 columns and import data into it. In essence each flat file that I import has different number of columns. They are all properly formatted only. My task is to import all the rows from a .csv flat file including the headers. I want to put this in a job so I can import multiple files into the table daily.

So inside a for each loop I have a data flow task within which I have a script component. I came up(research online) with the C# code below but I get error:

Index was outside the bounds of the array.

I tried to find the cause using MessageBox and I found it is reading the first line and the index is going outside the bounds of the array after the first line.

1.) I need your help with fixing the code

2.) My File1Conn is the flat file connection instead I want to read it directly from a variable User::FileNamethat my foreach loop keeps updating. Please help with modifying the code.

Thanks in advance.

This is my flat file:

https://drive.google.com/file/d/0B418ObdiVnEIRnlsZFdwYTRfTFU/view?usp=sharing

using System;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;
using System.Windows.Forms;
using System.IO;

[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent

{
    private StreamReader SR;
    private string File1;

    public override void AcquireConnections(object Transaction)
    {
        // Get the connection for File1
        IDTSConnectionManager100 CM = this.Connections.File1Conn;
        File1 = (string)CM.AcquireConnection(null);
    }

    public override void PreExecute()
    {
        base.PreExecute();
        SR = new StreamReader(File1);
    }

    public override void PostExecute()
    {
        base.PostExecute();
        SR.Close();
    }

    public override void CreateNewOutputRows()
    {
        // Declare variables
        string nextLine;
        string[] columns;
        char[] delimiters;
        int Col4Count;
        String[] Col4Value = new string[50];

        // Set the delimiter
        delimiters = ";".ToCharArray();

        // Read the first line (header)
        nextLine = SR.ReadLine();

        // Split the line into columns
        columns = nextLine.Split(delimiters);

        // Find out how many Col3 there are in the file
        Col4Count = columns.Length - 3;
        //MessageBox.Show(Col4Count.ToString());

        // Read the second line and loop until the end of the file
        nextLine = SR.ReadLine();

        while (nextLine != null)
        {

            // Split the line into columns
            columns = nextLine.Split(delimiters);
            {
                // Add a row
                File1OutputBuffer.AddRow();


                // Set the values of the Script Component output according to the file content
                File1OutputBuffer.SampleID = columns[0];
                File1OutputBuffer.RepNumber = columns[1];
                File1OutputBuffer.Product = columns[2];
                File1OutputBuffer.Col1 = columns[3];
                File1OutputBuffer.Col2 = columns[4];
                File1OutputBuffer.Col3 = columns[5];
                File1OutputBuffer.Col4 = columns[6];
                File1OutputBuffer.Col5 = columns[7];
                File1OutputBuffer.Col6 = columns[8];
                File1OutputBuffer.Col7 = columns[9];
                File1OutputBuffer.Col8 = columns[10];
                File1OutputBuffer.Col9 = columns[11];
                File1OutputBuffer.Col10 = columns[12];
                File1OutputBuffer.Col11 = columns[13];
                File1OutputBuffer.Col12 = columns[14];
                File1OutputBuffer.Col13 = columns[15];
                File1OutputBuffer.Col14 = columns[16];
                File1OutputBuffer.Col15 = columns[17];
                File1OutputBuffer.Col16 = columns[18];


            }

            // Read the next line
            nextLine = SR.ReadLine();

        }
    }

}

Script Transformation Output Columns. All columns have String[DT_STR] Lenght 50.

svk