// AddTask button method, takes the inputed information and builds the ToDo object and adds it to the list.
private void btnAddTask_Click(object sender, EventArgs e)
{
string newItem = txtToDo.Text.Trim();
string category = cbxCategory.SelectedItem.ToString();
bool urgent = chkUrgent.Checked;
// Here we build the Task, using the variables to build.
Task newTask = new Task(newItem, category, urgent);
// If the details are empty, we need to stop.
if (!string.IsNullOrEmpty(newTask.details))
{
// Here we using the GetTask method to build a string to add to the list.
string addingTask = newTask.GetTask();
if (itemsIsInList(clsToDo.Items, addingTask))
{
MessageBox.Show("You already added that item.", "Error");
}
else
{
clsToDo.Items.Add(addingTask);
txtToDo.Text = "";
}
}
}