private void learningGoalSaveButton_Click(object sender, EventArgs e)
{
_nameLearningGoal = nameTextBox.Text;
_valueLearningGoal = valueTextBox.Text;
var learningGoal = new ListViewItem(new string[]
{
_nameLearningGoal.Trim(),
_valueLearningGoal.Trim(),
});
_learningGoalsList.Items.Add(learningGoal);
this.Close();
}