public static Cancellation NewCancellation(CancellationTemplate cancTemplate)
{
Cancellation result = null;
try
{
string query = "INSERT INTO Cancellation (UserID, ArticleID, ArticleCount) VALUES (" +
cancTemplate.User.UserID + "," + cancTemplate.Article.ArticleID + "," + cancTemplate.Count + "); " +
"SELECT * FROM Cancellation WHERE CancellationID = SCOPE_IDENTITY();";
SqlConnection connection = new SqlConnection(ConnectionString);
SqlCommand cmd = new SqlCommand(query, connection);
connection.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
result = new Cancellation(
Convert.ToInt32(reader["CancellationID"]),
GetUser(Convert.ToInt32(reader["UserID"])),
GetArticle(Convert.ToInt32(reader["ArticleID"])),
Convert.ToInt32(reader["ArticleCount"]),
Convert.ToDateTime(reader["Created"])
);
}
connection.Close();
}
catch (Exception ex)
{
LogWriter.Write(ex, LOGFILE_NAME);
string errmsg = "Fehler beim Erstellen des Stornos.\n\n";
errmsg += "DatabaseHandler.NewCancellation(cancTemplate): " + ex.ToString();
throw new Exception(errmsg);
}
if (result == null)
throw new Exception("Fehler beim Erstellen des Stornos. Das Speichern konnte nicht verifiziert werden.\n\nDatabaseHandler.NewCancellation(cancTemplate)");
return result;
}
private void btnNewCancellation_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Storno bestätigen?", "Bestätigen", MessageBoxButtons.OKCancel, MessageBoxIcon.Asterisk) == System.Windows.Forms.DialogResult.Cancel) return;
try
{
if (cmbArticles.SelectedItem == null)
throw new Exception("Kein Artikel ausgewählt");
CancellationTemplate templ = new CancellationTemplate((User)cmbUsers.SelectedItem, (Article)cmbArticles.SelectedItem, Convert.ToInt32(cmbCount.Text));
templ.Create();
cmbCount.Text = "1";
cmbArticles.SelectedIndex = -1;
}
catch (Exception ex)
{
LogWriter.Write(ex, LOGFILE_NAME);
MessageBox.Show(ex.Message, "Fehler", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}