/// <summary>
/// Before update data.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataAccess_OnBeforeUpdate(object sender, Custom.OperationArgs e)
{
// Get the binding source data
BindingExpression bindingExpression = BindingOperations.GetBindingExpression(txtStateID, TextBox.TextProperty);
DataAccess.NequeoCompany.Data.State data = (DataAccess.NequeoCompany.Data.State)bindingExpression.DataItem;
// If a previous operation was attempted while
// the data was changed an not updated.
if (_updateAttempt)
{
MessageBoxResult result = MessageBox.Show("Disregard the changes (all changes will be lost)?", "Update", MessageBoxButton.YesNo);
if (result == MessageBoxResult.Yes)
{
e.Cancel = true;
}
}
_updateAttempt = false;
// Determine if the data has not change.
if (!PropertyChanged)
{
e.Cancel = true;
}
// If cancel update then set property state.
if (e.Cancel)
{
SetChangePropertyState(false);
}
}
/// <summary>
/// Before load data.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataAccess_OnBeforeLoad(object sender, Custom.OperationArgs e)
{
// Determine if the data has change.
if (PropertyChanged)
{
// Indicate that the data has changed.
MessageBox.Show("The data has changed, please update first", "Load", MessageBoxButton.OK);
_updateAttempt = true;
e.Cancel = true;
}
else
{
// If in Add new state
if (_addNew)
{
// Indicate that the data has changed.
MessageBoxResult result = MessageBox.Show("Insert the changes before loading. Disregard the changes (all changes will be lost)?", "Load", MessageBoxButton.YesNo);
if (result != MessageBoxResult.Yes)
{
e.Cancel = true;
}
}
// If loading should take place.
if (!e.Cancel)
{
// Show the selection form
Nequeo.Wpf.DataGridWindow selectItem = new DataGridWindow();
selectItem.ConnectionTypeModel = dataAccess.ConnectionTypeModel;
selectItem.LoadOnStart = true;
selectItem.MaxRecords = 50;
selectItem.OrderByClause = "StateID DESC";
selectItem.ShowDialog();
// Has an item been selected.
if (selectItem.SelectedRecord != null)
{
// Get the selected item.
DataAccess.NequeoCompany.Data.State data = (DataAccess.NequeoCompany.Data.State)selectItem.SelectedRecord;
// Assign the load item.
dataAccess.OrderByClause = selectItem.OrderByClause;
dataAccess.WhereClause = "StateID = " + data.StateID.ToString();
}
else
{
e.Cancel = true;
}
}
}
}
/// <summary>
/// Before insert data.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataAccess_OnBeforeInsert(object sender, Custom.OperationArgs e)
{
// Get the binding source data
BindingExpression bindingExpression = BindingOperations.GetBindingExpression(txtStateID, TextBox.TextProperty);
DataAccess.NequeoCompany.Data.State data = (DataAccess.NequeoCompany.Data.State)bindingExpression.DataItem;
dataAccess.DataModel = data;
MessageBoxResult result = MessageBox.Show("Are you sure you wish to insert this record?", "Insert", MessageBoxButton.YesNo);
if (result != MessageBoxResult.Yes)
{
e.Cancel = true;
}
}
/// <summary>
/// On load complete
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataAccess_OnLoad(object sender, EventArgs e)
{
// Get the data that has been returned.
DataAccess.NequeoCompany.Data.State[] returnedDataList = (DataAccess.NequeoCompany.Data.State[])dataAccess.DataModel;
DataAccess.NequeoCompany.Data.State data = returnedDataList[0];
// Attach to the property changed event within the model
data.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(data_PropertyChanged);
SetChangePropertyState(false);
// Assign the data to the data context.
gridState.DataContext = data;
// Enable the controls.
EnableDisable(0);
// Start the change (load) process.
_loading = true;
_addNew = false;
// Set the list selected index values.
_loading = false;
}