CNSA-212-FP/Louis'-Pharmacy_CNSA212-FP/frmMedication.cs

using System;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Imaging;
using System.Net.NetworkInformation;

namespace Louis__Pharmacy_CNSA212_FP
{
    public partial class frmMedication : Form
    {
        private readonly bool isAdd;
        private frmInfo SourceForm;
            ErrorProvider epLocal = new ErrorProvider();
        public frmMedication(frmInfo sourceForm, bool isNew)
        {
           
            
            SourceForm = sourceForm;

            isAdd = isNew;
            InitializeComponent();

            

            if (isNew)
            {
                lblDisPurpose.Text = "Add Medication";
                btnGO.Text = "Create";
            }
            else
            {
                lblDisPurpose.Text = "Edit Medication";
                btnGO.Text = "Update";
            }
            KeyPreview = true;
            KeyDown += frmMedication_KeyDown;
        }

        private void frmMedication_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Escape) 
                Close();

            if (e.KeyCode == Keys.Enter) btnGO_Click(sender, e);
        }
        
        public void FillMedication(string rxID)
        {
            var ds = new DataSet();
            var data = new PharmacyDataTier();

            ds = PharmacyDataTier.MedicationInfoSearch(rxID);
            txtMedID.Text = ds.Tables[0].Rows[0]["Medication_id"].ToString();
            txtName.Text = ds.Tables[0].Rows[0]["MedicationName"].ToString();
            txtIntake.Text = ds.Tables[0].Rows[0]["IntakeMethod"].ToString();
            txtFrequency.Text = ds.Tables[0].Rows[0]["Frequency"].ToString();
            txtDosage.Text = ds.Tables[0].Rows[0]["Dosage"].ToString();
            txtPurpose.Text = ds.Tables[0].Rows[0]["Purpose"].ToString();
            txtRxNum.Text = ds.Tables[0].Rows[0]["RxNum"].ToString();
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void btnGO_Click(object sender, EventArgs e)
        {
            
            var hasFailed = false;

            var Medication_id = "";
            var MedicationName = "";
            var IntakeMethod = "";
            var Frequency = "";
            var Dosage = "";
            var Purpose = "";
            var RxNum = "";


            if (txtMedID.Text.Length + txtName.Text.Length + txtIntake.Text.Length + txtFrequency.Text.Length + txtDosage.Text.Length + txtPurpose.Text.Length + txtRxNum.Text.Length > 0) 
            {



                try
                {
                    RxNum = txtRxNum.Text;

                    if (RxNum.Length > 30)
                    {
                        throw new Exception();
                    }
                    
                }
                catch (Exception exception)
                {
                    epLocal.SetError(txtRxNum, "Invalid Value");
                    hasFailed = true;
                }
                try
                {
                    Purpose = txtPurpose.Text;

                    if (Purpose.Length > 100)
                    {
                        throw new Exception();
                    }
                }
                catch (Exception exception)
                {
                    epLocal.SetError(txtPurpose, "Invalid Value");
                    hasFailed = true;
                }
                try
                {
                    Dosage = txtDosage.Text;

                    if (Dosage.Length > 30)
                    {
                        throw new Exception();
                    }
                }
                catch (Exception exception)
                {
                    epLocal.SetError(txtDosage, "Invalid Value");
                    hasFailed = true;
                }
                try
                {

                    Frequency = txtFrequency.Text;

                    if (Frequency.Length > 30)
                    {
                        throw new Exception();
                    }

                }
                catch (Exception exception)
                {
                    epLocal.SetError(txtFrequency, "Invalid Value");
                    hasFailed = true;
                }
                try
                {
                    IntakeMethod = txtIntake.Text;
                    if (IntakeMethod.Length>30)
                    {
                        throw new Exception();
                    }
                }
                catch (Exception exception)
                {
                    epLocal.SetError(txtIntake, "Invalid Value");
                    hasFailed = true;
                }
                try
                {
                    MedicationName = txtName.Text;
                    if (MedicationName.Length>60)
                    {
                        throw new Exception();
                    }
                }
                catch (Exception exception)
                {
                    epLocal.SetError(txtName, "Invalid Value");
                    hasFailed = true;
                }
                
                try
                {
                    Medication_id = txtMedID.Text;
                    if (Medication_id.Length>7)
                    {
                        throw new Exception();
                    }

                    while (Medication_id.Length < 7)
                    {
                        Medication_id = "0" + Medication_id;
                    }
                }
                catch (Exception exception)
                {
                    epLocal.SetError(txtMedID, "Invalid Value");
                    hasFailed = true;
                }

                if (!hasFailed)
                {
                    if (isAdd)
                    {
                        PharmacyDataTier.CreateMedication(
                            Medication_id,
                            MedicationName,
                            IntakeMethod,
                            Frequency,
                            Dosage,
                            Purpose,
                            RxNum);
                    }
                    else
                    {
                        PharmacyDataTier.UpdateMedication(
                            Medication_id,
                            MedicationName,
                            IntakeMethod,
                            Frequency,
                            Dosage,
                            Purpose,
                            RxNum);
                    }

                    SourceForm.txtRxNumber.Text = Medication_id;
                    SourceForm.btnPrescriptionSearch_Click(sender, e);
                    Close();


                }
            }
            
        }

        private void frmMedication_Load(object sender, EventArgs e)
        {
            txtMedID.Enabled = false;

            if (isAdd)
            {
                var nextID = PharmacyDataTier.GetNextMedicationID();
                txtMedID.Text = nextID.ToString();
            }
        }


        private void txtMedID_TextChanged(object sender, EventArgs e)
        {
            epLocal.SetError(txtMedID,"");
        }

        private void txtName_TextChanged(object sender, EventArgs e)
        {
            epLocal.SetError(txtName,"");
        }

        private void txtIntake_TextChanged(object sender, EventArgs e)
        {
            epLocal.SetError(txtIntake,"");
        }

        private void txtFrequency_TextChanged(object sender, EventArgs e)
        {
            epLocal.SetError(txtFrequency,"");
        }

        private void txtDosage_TextChanged(object sender, EventArgs e)
        {
            epLocal.SetError(txtDosage,"");
        }

        private void txtPurpose_TextChanged(object sender, EventArgs e)
        {
            epLocal.SetError(txtPurpose,"");
        }

        private void txtRxNum_TextChanged(object sender, EventArgs e)
        {
            epLocal.SetError(txtRxNum,"");
        }
    }
}