C#

private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
    this.Dispose();
    this.Close();
}

private void button2_Click(object sender, EventArgs e)
{
    filepath = txtFileName.Text;
    StreamReader sr = new StreamReader(filepath);
    string holdLine = sr.ReadLine();
    int recLength = holdLine.Length;
    int startIndex = 463;
    int oneRecLength = 276;
    int totalRecs = (recLength - startIndex) / oneRecLength;
    int startread = 739;
    int lastread = 0;
    if ((recLength - 463) > 1015)
    {
        if((totalRecs - 1) != 0)
        {
            string nextrec = holdLine.Substring(startread, 276);
            HOM_CO_ID = nextrec.Substring(0, 5); //= 5
            HOM_PROD_CODE = nextrec.Substring(5, 3); //= 3
            HOM_ACCT_TYPE = nextrec.Substring(8, 1); //= 1
            HOM_BRANCH = nextrec.Substring(9, 6); //= 6
            HOM_ACCOUNT_NO = nextrec.Substring(15, 23); //= 23
            HOM_BUDGET_NO = nextrec.Substring(38, 5); //= 5
            HOM_ACCOUNT_NAME = nextrec.Substring(43, 30); //= 30
            HOM_AMOUNT = nextrec.Substring(73, 17); //= 17
            HOM_REF = nextrec.Substring(90, 20); //= 20
            HOM_DESCR = nextrec.Substring(110, 47); //= 47
            HOM_TRAN_CODE = nextrec.Substring(157, 5); //= 5
            HOM_REVERSAL_DESCR = nextrec.Substring(162, 47); //= 47
            NOM_REF2 = nextrec.Substring(209, 20); //= 20
            NOM_DESCRIPTION = nextrec.Substring(229, 47); //= 47

            txtHomCompId.Text = HOM_CO_ID;
            txtHomProdCode.Text = HOM_PROD_CODE;
            txtHomAccountType.Text = HOM_ACCT_TYPE;
            txtHomBranch.Text = HOM_BRANCH;
            txtHomAccNo.Text = HOM_ACCOUNT_NO;
            txtHomBudgetNo.Text = HOM_BUDGET_NO;
            txtHomAccName.Text = HOM_ACCOUNT_NAME;
            txtHomAmount.Text = HOM_AMOUNT;
            txtHomRef.Text = HOM_REF;
            txtHomDescr.Text = HOM_DESCR;
            txtHomTranCode.Text = HOM_TRAN_CODE;
            txtHomRevDescr.Text = HOM_REVERSAL_DESCR;
            txtNomRef2.Text = NOM_REF2;
            txtNomDescr2.Text = NOM_DESCRIPTION;
            validateMessage();
            totalRecs--;
            startread = lastread + 276;
        }
    }