protected void showButton_OnServerClick(object sender, EventArgs e)
{
if (fromDateTextBox.Value.Length == 0 || toDateTextBox.Value.Length == 0)
{
messageLabel.Text = "<span style='color:red;font-weight:bold;font-style:italic;font-size:15px;'>From Date and To Date both should be filled.";
}
else
{
DateTime fromDate = Convert.ToDateTime(fromDateTextBox.Value);
DateTime toDate = Convert.ToDateTime(toDateTextBox.Value);
List <Patient> patients = billManager.GetUnpaidBillInfo(fromDate, toDate);
if (patients.Count == 0)
{
messageLabel.Text = "<span style='color:red;font-weight:bold;font-style:italic;font-size:15px;'>No Information found</span>";
}
else
{
unpaidBillReportGridView.DataSource = patients;
unpaidBillReportGridView.DataBind();
}
}
}