txt to datagridview and vice versa

txt to datagridview.cs

//method 1 txt to grid
        private void Form1_Load(object sender, EventArgs e)
        {
            var lines = File.ReadAllLines(@"D:\Nisar\workspace\biometric\backup data\ASL_001.TXT");
            if (lines.Count() > 0)
            {
                foreach (var columnName in lines.FirstOrDefault()
                    .Split(new[] { '\t' }, StringSplitOptions.RemoveEmptyEntries))
                {
                    dataGridView1.Columns.Add(columnName, columnName);
                }
                foreach (var cellValues in lines.Skip(1))
                {
                    var cellArray = cellValues
                        .Split(new[] { '\t' });
                    if (cellArray.Length == dataGridView1.Columns.Count)
                        dataGridView1.Rows.Add(cellArray);
                }
            }
        }
        
//method 2 little problem in this code that it take two consucative tabs at once
//          so just refer it for logic

        private void Form2_Load(object sender, EventArgs e)
        {
            System.IO.StreamReader file = new System.IO.StreamReader(@"D:\Nisar\workspace\biometric\backup data\AGL_001.TXT");
            string[] columnnames = file.ReadLine().Split('\t');
            DataTable dt = new DataTable();
            foreach (string c in columnnames)
            {
                dt.Columns.Add(c);
            }
            string newline;
            while ((newline = file.ReadLine()) != null)
            {
                DataRow dr = dt.NewRow();
                string[] values = newline.Split('\t');
                for (int i = 0; i < values.Length; i++)
                {
                    dr[i] = values[i];
                }
                dt.Rows.Add(dr);
            }
            file.Close();
            dataGridView1.DataSource = dt;
        }
        
        
// datagridview to txt
Public static void gtotxt()
{
	string strdestination = "D:\\kk.txt";
	TextWriter tw = new StreamWriter(strdestination);
	for (int x = 0; x < gridSLogData.Columns.Count; x++)
	{
	    tw.Write(gridSLogData.Columns[x].HeaderText);
	    if (x != gridSLogData.Columns.Count - 1)
	    {
	        tw.Write("\t");
	    }
	}
	tw.WriteLine();

	for (int x = 0; x < gridSLogData.Rows.Count - 1; x++)
	{
	    for (int y = 0; y < gridSLogData.Columns.Count; y++)
	    {
	        tw.Write(gridSLogData.Rows[x].Cells[y].Value);
	        if (y != gridSLogData.Columns.Count - 1)
	        {
	            tw.Write("\t");
	        }
	    }
	    tw.WriteLine();
	}
	tw.Close();
}


//datatable to txt
 public static void WriteDataToFile(DataTable submittedDataTable, string submittedFilePath)
{
    int i = 0;
    StreamWriter sw = null;

    sw = new StreamWriter(submittedFilePath, false);

    for (i = 0; i < submittedDataTable.Columns.Count - 1; i++)
    {

        sw.Write(submittedDataTable.Columns[i].ColumnName + "\t");

    }
    sw.Write(submittedDataTable.Columns[i].ColumnName);
    sw.WriteLine();

    foreach (DataRow row in submittedDataTable.Rows)
    {
        object[] array = row.ItemArray;

        for (i = 0; i < array.Length - 1; i++)
        {
            sw.Write(array[i].ToString() + "\t");
        }
        sw.Write(array[i].ToString());
        sw.WriteLine();

    }

    sw.Close();
}