559871d853
Change: Clear the employee datagrid view after adding a new cutsomer. Update/Bugfix: Incorrectly updating the combobox selection when populating the datagrid view. Fixed. Add: Delete button functionality. Add: Event hooking status combobox into a selection change commited event to automatically update db/customer view when status changes.
215 lines
7.7 KiB
C#
215 lines
7.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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/* References */
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// Using a delegate to trigger method on the customer view form
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// https://www.coderslexicon.com/passing-data-between-forms-using-delegates-and-events/
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namespace QueueSys
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{
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public partial class frmEmployeeView : Form
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{
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public frmEmployeeView()
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{
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InitializeComponent();
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}
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// Our delegate (which "points" at any method which takes an object and EventArgs)
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// Look familiar? This is the signature of most control events on a form
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public delegate void SendMessage(object obj, EventArgs e);
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// Here is the event we trigger to send messages out to listeners
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public event SendMessage OnSendMessage;
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/* Execute when program / main form loads.
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* Pop up the customer view screen to drag onto second monitor
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* creates our second form, says "attach its MessageReceived function to the event"
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*/
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private void frmEmployeeView_Load(object sender, EventArgs e)
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{
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frmCustomerView frm = new frmCustomerView();
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OnSendMessage += frm.MessageReceived;
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frm.Show();
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RefreshEmployeeView();
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}
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/* Enable options menu. */
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private void optionsToolStripMenuItem_Click(object sender, EventArgs e)
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{
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frmOptions frm = new frmOptions();
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frm.Show();
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frm.Activate();
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}
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// Exits the application.
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private void exitAltF4ToolStripMenuItem_Click(object sender, EventArgs e) => Application.Exit();
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private void generateReportToolStripMenuItem_Click(object sender, EventArgs e)
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{
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MessageBox.Show("To-do: Generate excel report from SQL Database.");
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}
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private void btnAdd_Click(object sender, EventArgs e)
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{
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SqliteDataAccess sda = new SqliteDataAccess();
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ReportView evNewCx = new ReportView();
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evNewCx.customer_name = tbCustomerName.Text;
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evNewCx.num_bags = Int32.Parse(cbNumBags.Text);
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evNewCx.employee = tbEmployeeName.Text;
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sda.SaveCustomer(evNewCx);
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//Invoke the delegate to update customer view.
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OnSendMessage?.Invoke(this, e);
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tbCustomerName.Text = "";
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cbNumBags.Text = "";
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tbEmployeeName.Text = "";
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MessageBox.Show("Customer has been added!", "Queue System", MessageBoxButtons.OK, MessageBoxIcon.Information);
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RefreshEmployeeView();
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}
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private void RefreshEmployeeView()
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{
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dgvEmployeeView.Rows.Clear();
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dgvEmployeeView.Refresh();
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// Build the row.
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SqliteDataAccess sdaEvView = new SqliteDataAccess();
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List<EmployeeView> evList = new List<EmployeeView>();
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evList = sdaEvView.LoadEmployeeView();
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foreach (EmployeeView item in evList)
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{
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string[] row = new string[] { item.id.ToString(), item.customer_name };
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dgvEmployeeView.Rows.Add(row);
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}
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DataGridViewComboBoxColumn cmb = new DataGridViewComboBoxColumn();
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cmb.HeaderText = "Status";
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cmb.MaxDropDownItems = 3;
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//Allows for dynamic adding/removing status items per
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//the status lookup table in the sqlite db.
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List<StatusModel> s = new List<StatusModel>();
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s = sdaEvView.LoadStatusStrings();
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foreach (StatusModel item in s)
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{
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cmb.Items.Add(item.status);
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}
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dgvEmployeeView.Columns.Add(cmb);
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//Change the status of the combobox based on the query from the db.
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List<StatusModel> cxStatus = new List<StatusModel>();
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//Select the id column from the current row.
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foreach(DataGridViewRow row in dgvEmployeeView.Rows)
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{
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cxStatus = sdaEvView.GetCxStatus(Int32.Parse(dgvEmployeeView.Rows[row.Index].Cells[0].Value.ToString()));
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row.Cells[2].Value = cxStatus[0].status;
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}
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// Add the delete button.
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DataGridViewButtonColumn btn = new DataGridViewButtonColumn();
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btn.HeaderText = "Delete";
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btn.Text = "Delete";
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btn.Name = "btn";
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btn.UseColumnTextForButtonValue = true;
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dgvEmployeeView.Columns.Add(btn);
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}
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private void dgvEmployeeView_CellClick(object sender, DataGridViewCellEventArgs e)
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{
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//The delete button was clicked.
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if (e.ColumnIndex == 3)
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{
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//Sanity check, per option.
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if (Properties.Settings.Default.ConfirmDelete)
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{
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DialogResult result = MessageBox.Show("Are you sure you want to delete this customer?", "Queue System", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
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if (result == DialogResult.No)
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{
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MessageBox.Show("Customer was not deleted.", "Queue System", MessageBoxButtons.OK, MessageBoxIcon.Information);
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return;
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}
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}
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SqliteDataAccess sdaEvView = new SqliteDataAccess();
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EmployeeView evCustomer = new EmployeeView();
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evCustomer.id = Int32.Parse(dgvEmployeeView.CurrentRow.Cells[0].Value.ToString());
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sdaEvView.ArchiveCustomer(evCustomer);
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RefreshEmployeeView();
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//Invoke the delegate to update customer view with updated data.
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OnSendMessage?.Invoke(this, e);
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MessageBox.Show("Customer has been removed from the queue", "Queue System", MessageBoxButtons.OK, MessageBoxIcon.Information);
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}
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}
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// This event hooks the status combobox into the change commit event
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private void dgvEmployeeView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
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{
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if (dgvEmployeeView.CurrentCell.ColumnIndex == 2)
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{
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ComboBox combo = e.Control as ComboBox;
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if(combo != null)
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{
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combo.SelectionChangeCommitted += new EventHandler(dgvCbStatus_SelectionChangeCommitted);
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}
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}
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}
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/* This event fires when the "status" combo box was changed
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* and that change was "committed"
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* This is needed to update the backend SQL db on demand,
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* then update the customer view screen.
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*/
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private void dgvCbStatus_SelectionChangeCommitted(object sender, EventArgs e)
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{
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DataGridViewComboBoxEditingControl dgvcbec = sender as DataGridViewComboBoxEditingControl;
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int CustomerId = Int32.Parse(dgvcbec.EditingControlDataGridView.CurrentRow.Cells[0].Value.ToString());
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string new_status = dgvcbec.Text;
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//Check to see if we need an update.
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SqliteDataAccess sdaEvView = new SqliteDataAccess();
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List<StatusModel> cxStatus = new List<StatusModel>();
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cxStatus = sdaEvView.GetCxStatus(CustomerId);
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// Update not required.
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if (cxStatus[0].status == new_status)
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return;
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/* Update of the backend DB required beyond this point
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* Update the customer status on the backend db.
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*/
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sdaEvView.UpdateCustomerStatus(CustomerId, new_status);
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//Invoke the delegate to update customer view with updated data.
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OnSendMessage?.Invoke(this, e);
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}
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}
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}
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