private void btnIssueInvoice_Click(object sender, EventArgs e)
{
//Instantiate customer and repair object
Customer cust = new Customer();
Repair rep = new Repair();
//Setting customer ID
cust.setCustomerID(Convert.ToInt32(grdAllCustomer.Rows[grdAllCustomer.CurrentCell.RowIndex].Cells[0].Value));
//calculating initial and after cost
decimal totalCost = Convert.ToDecimal(lblTotalCostFill.Text);
decimal initialCost = Convert.ToDecimal(lblCustomerBalance.Text);
//Sets balance to initial and total cost combined
cust.setCustomerBalance(totalCost + initialCost);
//get customer ID
string cno = grdAllCustomer.Rows[grdAllCustomer.CurrentCell.RowIndex].Cells[0].Value.ToString();;
//Updates customer balance and repair status
cust.updateCustomerBalance();
string status = "'ISSUE INVOICE'";
rep.updateRepairStatusINVOICE(Convert.ToInt32(cno), status);
Customer cust1 = new Customer();
DataSet DataSet = new DataSet();
//Gets all customers by name
grdAllCustomer.DataSource = Customer.getAllCustomerByName(DataSet, txtNameEntered.Text.ToString()).Tables["ss"];
MessageBox.Show("INVOICE SENT \n-------------------\nBALANCE UPDATED", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
grpRepairInfo.Visible = false;
grpRepairsDone.Visible = false;
}