Merging 2 columns with an identifier

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C#

Hi,

I have a requirement like in FORM1, i have a button called MERGE. After clicking on it, another form opens and i have selected the columns from 2 dropdowns to merge. It's merging the 2 column values and displaying in datagrid (in form2).

But, i want one column from form1 to display along with merged columns. Can anyone help me on this? Below is my merge button code :

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace DATApplication
{
    public partial class frmMerge : Form
    {
        public frmMerge(String[] datfile1)//DataGridView dgv)
        {
            InitializeComponent();
            strfile = datfile1;

        }

        String[] strfile;

        private void btnMerge_Click(object sender, EventArgs e)
        {
            DataGridViewTextBoxColumn dgvctime = new DataGridViewTextBoxColumn();
            dgvctime.Name = cmbColumn1.Text;
            dgvctime.HeaderText = cmbColumn1.Text;
            dataGridView1.Columns.Add(dgvctime);

            //dataGridView1.Rows.Add(dgvctime);
            int rowadded = 0;

            for (int RowCount = 1; RowCount <= strfile.Length - 1; RowCount++)
            {
                if (strfile[RowCount].ToString() != " ")
                {
                    if (RowCount != 0)
                    {
                        //dataGridView1.Rows.Add();
                        string[] column = strfile[RowCount].Split('þ');
                        rowadded = 0;
                        for (int i = 1; i < column.Length - 1; i++)
                        {
                            //dataGridView1.Rows.Add();
                            if ((cmbColumn1.SelectedIndex == ((i - 1) / 2)) || (cmbColumn2.SelectedIndex == ((i - 1) / 2)))
                            {
                                if (rowadded == 0)
                                {
                                    rowadded = 1;
                                    dataGridView1.Rows.Add();
                                }
                                if (column[i].ToString() != "\u0014")
                                {
                                    dataGridView1.Rows[RowCount - 1].Cells[cmbColumn1.Text].Value += " "+column[i].ToString();
                                }
                            }
                        }

                    }
                }
            }



        }

        private void button1_Click(object sender, EventArgs e)
        {
            ClsSaveDat Savdat = new ClsSaveDat();
            Savdat.SaveDat(dataGridView1);
        }

    }
}

What I have tried:

I tried to add the column i want in the form2. It's displaying the column but with empty values. I want the values also to display. Can you please help me achieving this?