/// <summary>
/// Returns a list of all Item Definitions
/// </summary>
/// <returns></returns>
public List <ItemDesc> MakeItemDescList()
{
try
{
//grab all itemdescs from the database
int retVal = 0;
DataSet ds = DataAccess.ExecuteSQLStatement(DataSQL.SelectAllItemDesc(), ref retVal);
List <ItemDesc> retList = new List <ItemDesc>();
for (int i = 0; i < retVal; i++)
{
ItemDesc temp = new ItemDesc();
temp.ItemCode = ds.Tables[0].Rows[i].ItemArray[0].ToString();
temp.Description = ds.Tables[0].Rows[i].ItemArray[1].ToString();
if (double.TryParse(ds.Tables[0].Rows[i].ItemArray[2].ToString(), out double cost))
{
temp.Cost = cost;
}
retList.Add(temp);
}
return(retList);
}
catch (Exception ex)
{
//Throw a custom-trace exception
throw new Exception(MethodInfo.GetCurrentMethod().DeclaringType.Name + "." +
MethodInfo.GetCurrentMethod().Name + " -> " + ex.Message);
}
}
/// <summary>
/// Event handler for datagrid selection changed
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dgItemDefs_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
try
{
//Clears textboxes or loads them with information for the selection
if (dgItemDescs.SelectedIndex == -1)
{
txtCost.Clear();
txtDescription.Clear();
txtItemCode.Clear();
}
else
{
ItemDesc item = dgItemDescs.SelectedItem as ItemDesc;
txtDescription.Text = item.Description;
txtItemCode.Text = item.ItemCode;
txtCost.Text = item.Cost.ToString();
}
}
catch (Exception ex)
{
//Throw a custom-trace exception
throw new Exception(MethodInfo.GetCurrentMethod().DeclaringType.Name + "." +
MethodInfo.GetCurrentMethod().Name + " -> " + ex.Message);
}
}
/// <summary>
/// Adds a new itemdesc to the database.
/// Returns false if the item errors due to duplicate primary key
/// </summary>
/// <param name="item"></param>
public bool AddNewItemDesc(ItemDesc item)
{
try
{
DataAccess.ExecuteNonQuery(DataSQL.InsertItemDesc(item.ItemCode, item.Description, item.Cost));
return(true);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// Deletes the passed itemdesc from the database
/// </summary>
/// <param name="item"></param>
public void DeleteItemDesc(ItemDesc item)
{
try
{
DataAccess.ExecuteNonQuery(DataSQL.DeleteItemDesc(item.ItemCode));
}
catch (Exception ex)
{
//Throw a custom-trace exception
throw new Exception(MethodInfo.GetCurrentMethod().DeclaringType.Name + "." +
MethodInfo.GetCurrentMethod().Name + " -> " + ex.Message);
}
}
/// <summary>
/// Event handler for all button clicks
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Button_Click(object sender, RoutedEventArgs e)
{
try
{
//Get the button that was pressed
Button btn = sender as Button;
//Execute action based on the button pressed
//Save button
if (sender.Equals(btnSave))
{
ItemDesc item;
string oldItemCode;
//Check if it's an add or edit
if (isNewItem)
{
item = new ItemDesc();
oldItemCode = "NULL";
}
else
{
item = dgItemDescs.SelectedItem as ItemDesc;
oldItemCode = item.ItemCode;
}
//Set the information from the text boxes to the item
if (!txtItemCode.Text.Equals(""))
{
item.ItemCode = txtItemCode.Text;
txtItemCode.BorderBrush = Brushes.DarkBlue;
}
else
{
txtItemCode.BorderBrush = Brushes.Red;
return;
}
if (!txtDescription.Text.Equals(""))
{
item.Description = txtDescription.Text;
txtDescription.BorderBrush = Brushes.DarkBlue;
}
else
{
txtDescription.BorderBrush = Brushes.Red;
return;
}
if (double.TryParse(txtCost.Text, out double result))
{
item.Cost = result;
txtCost.BorderBrush = Brushes.DarkBlue;
}
else
{
txtCost.BorderBrush = Brushes.Red;
return;
}
//Add or update to the database
if (isNewItem)
{
if (!dataMaster.AddNewItemDesc(item))
{
MessageBox.Show("Error: Duplicate Item Code.", "Duplicate Item Code", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
}
else
{
dataMaster.UpdateItemDesc(item);
}
//Refresh items list
dgItemDescs.ItemsSource = dataMaster.MakeItemDescList();
DisableItemEditMode();
}
//Cancel button
else if (sender.Equals(btnCancel))
{
//refresh item list and disable edit mode
dgItemDescs.ItemsSource = dataMaster.MakeItemDescList();
DisableItemEditMode();
}
//Edit Item button
else if (sender.Equals(btnEdit))
{
//The datagrid, addeditdelete buttons should be locked,
//Unlock savecancel buttons,
//Set textboxes Readonly to false
if (dgItemDescs.SelectedIndex != -1)
{
isNewItem = false;
EnableItemEditMode();
}
}
//Add New Item button
else if (sender.Equals(btnAdd))
{
//enable edit mode for new item
isNewItem = true;
EnableItemEditMode();
}
//Delete Item button
else if (sender.Equals(btnDelete))
{
//Confirm deletion of the item
if (dgItemDescs.SelectedIndex != -1)
{
MessageBoxResult result = MessageBox.Show("Delete this item?", "Confirm Deletion", MessageBoxButton.YesNo, MessageBoxImage.Question);
if (result == MessageBoxResult.Yes)
{
dataMaster.DeleteItemDesc(dgItemDescs.SelectedItem as ItemDesc);
dgItemDescs.ItemsSource = dataMaster.MakeItemDescList();
}
}
}
//Close button
else
{
Close();
}
}
catch (Exception ex)
{
if (ex.Message.Contains("related records"))
{
MessageBox.Show("Cannot Delete Item, because it is actively used in an invoice.", "Delete Item Denied", MessageBoxButton.OK, MessageBoxImage.Error);
}
else
{
//Throw a custom-trace exception
throw new Exception(MethodInfo.GetCurrentMethod().DeclaringType.Name + "." +
MethodInfo.GetCurrentMethod().Name + " -> " + ex.Message);
}
}
}
