Develop Reference

Insert INTO error when transferring data from DataTable to Access Database

I have a datatable with 5 columns, (Song, Artist, Album, Genre, Time) the table allows for me to enter as many rows as i want to create a playlist of music, when the user sees fit they can click the button export the data to access. My access database has a table named "Playlist" with the same 5 columns as the data table. When trying to transfer the data, i keep getting the exception error for the Insert INTO statement and I have no idea why because i am using a commandBuilder. I have attached my class and method thats performing this action.
Please advise!
public void ExportPlaylistToAccess(DataTable playlist)
{
// open connection to the database pathed to
String connection = #"Provider=Microsoft.ACE.OLEDB.12.0;" +
#"Data source= D:\CIS 465\Final Project\VirtualiPod\iTunesPlaylistDatabase.accdb";
using (OleDbConnection con = new OleDbConnection(connection))
{
var adapter = new OleDbDataAdapter();
adapter.SelectCommand = new OleDbCommand("SELECT * from [Playlist]", con);
var cbr = new OleDbCommandBuilder(adapter);
cbr.GetDeleteCommand();
cbr.GetInsertCommand();
cbr.GetUpdateCommand();
try
{
con.Open();
adapter.Update(playlist);
}
catch (OleDbException ex)
{
MessageBox.Show(ex.Message, "Database Error");
}
catch (Exception x)
{
MessageBox.Show(x.Message, "Exception Error");
}
}
dataTable creation
private void createPlaylist_Click(object sender, EventArgs e)
{
if (playlist.Rows.Count == 0)
{
playlist.Columns.Add("Song");
playlist.Columns.Add("Artist");
playlist.Columns.Add("Album");
playlist.Columns.Add("Genre");
playlist.Columns.Add("Time");
dataGridView1.DataSource = playlist;
}
else if (playlist.Rows.Count > 0)
{
MessageBox.Show("Please clear your current playlist to create a new one.");
}
}
// adds song to playlist for user upon click
private void addToPlaylist_Click(object sender, EventArgs e)
{
IITTrackCollection tracks = app.LibraryPlaylist.Tracks;
IITTrack currentTrack = app.CurrentTrack;
DataRow newRow;
newRow = playlist.NewRow();
newRow["Song"] = currentTrack.Name;
newRow["Artist"] = currentTrack.Artist;
newRow["Album"] = currentTrack.Album;
newRow["Genre"] = currentTrack.Genre;
newRow["Time"] = currentTrack.Time;
playlist.Rows.Add(newRow);
dataGridView1.DataSource = playlist;
}

Time is a reserved word. For some reason the command builder does not surround fields that are database reserved words (time, date, long etc.) with brackets [time] which would allow the insert query to work correctly. Without the brackets the insert will fail as the SQL compiler does not know if the string time is a sql command or a field name. The only solution I've found is to rename your database fields so that they are not in conflict with the database reserved names. Hopefully MS will eventually fix this mistake.

Passing Connection From TableAdapter Produces connectionstring property has not been initialized

I ran into a problem where passing a connection from a TableAdapter to some methods throws an exception stating the connectionstring isn't initialized. There are quite a few questions on SO with this exception but none were passing the connection and most were because the ConnectionString was null. Weird thing is I used MessageBox.Show(connection.ConnectionString); through out the chain of methods and I receive a valid connection string at every step. This is a somewhat complicated program that is in production but I will try to simplify the code for this question...
This is the postInventoryData method, which takes a DataGridView with inventory items and iterates through it posting them to the inventory. I use a TransactionScope to ensure the changes are safely rolled back in the event of an error. If an item is a kit(an item comprised of other items) I must iterate through those items and remove them from the inventory. The problem occurs when I check whether or not the item is a kit.
public bool postInventoryData(DataGridView dgv)
{
bool successful = true;
TestDataSetTableAdapters.inentoryTrxTableAdapter inventoryTrxAdapter =
new TestDataSetTableAdapters.inentoryTrxTableAdapter();
try
{
using (TransactionScope trxScope = new TransactionScope
(TransactionScopeOption.Required, new System.TimeSpan(0, 15, 0)))
{
MessageBox.Show(inventoryTrxAdapter.Connection.ConnectionString); // <-- Valid ConnectionString
inventoryTrxAdapter.OpenConnection();
for (int i = 0; i < dgv.Rows.Count; i++)
{
//parameter values
string departmentCode = dgv.Rows[i].Cells["Department_Code"].Value.ToString();
string machineCode = dgv.Rows[i].Cells["Machine_Code"].Value.ToString();
string operatorCode = dgv.Rows[i].Cells["Operator_Code"].Value.ToString();
string itemNumber = dgv.Rows[i].Cells["Item_Number"].Value.ToString();
double? qtyProduced = Convert.ToDouble(dgv.Rows[i].Cells["Quantity"].Value.ToString());
bool isKit =
businessLayer.isItemNumberKit
(inventoryTrxAdapter.Connection, itemNumber); // <-- CULPRIT!
// Inserts the item
dailyProductionInsertQty(
departmentCode,
machineCode,
operatorCode,
itemNumber,
isKit,
qtyProduced,
inventoryTrxAdapter,
trxScope);
}
inventoryTrxAdapter.CloseConnection();
trxScope.Complete();
}
}
catch (System.Exception ex)
{
successful = false;
MessageBox.Show(ex.ToString());
}
return successful;
}
The isItemNumberKit method
public bool isItemNumberKit(SqlConnection connection, string itemNumber)
{
bool contains;
MessageBox.Show(connection.ConnectionString); // <-- Valid ConnectionString
DataTable dt = getKit(connection, itemNumber); // <-- CULPRIT!
if (dt.Rows.Count > 0)
{
contains = true;
}
else
{
contains = false;
}
return contains;
}
The getKit method
public DataTable getKit(SqlConnection connection, string itemNumber)
{
DataTable dt = new DataTable();
SqlConnection myConnection = connection;
MessageBox.Show(myConnection.ConnectionString); // <-- Valid ConnectionString
SqlParameter paramItemNumber = new SqlParameter();
paramItemNumber.ParameterName = "#ItemNumber";
paramItemNumber.Value = itemNumber;
paramItemNumber.SqlDbType = System.Data.SqlDbType.VarChar;
try
{
using (myConnection)
{
string sql =
#"SELECT kits.Row_Id,
kits.Kit_Item_Number,
kits.Location_Code
FROM Inventory.dbo.Z_PV_Kits kits
WHERE kits.Kit_Item_Number=#ItemNumber";
//myConnection.Open();
using (SqlCommand myCommand = new SqlCommand(sql, myConnection))
{
myCommand.Parameters.Add(paramItemNumber);
SqlDataReader reader = myCommand.ExecuteReader();
dt.Load(reader);
}
}
}
catch (Exception ex)
{
dt = null;
MessageBox.Show(ex.ToString());
}
return dt;
}
When I execute postInventoryData the program throws an exception with the message, "The connectionstring property has not been initialized." with the line numbers pointing to isItemNumberKit and getKit. As you can see in the code above, I used a MessageBox.Show(connection.ConnectionString) throughout the process and each time I received a valid Connection string. I have created a workaround which stores a cached DataTable containing all the kit items I can run linq statements on. I am not in emergency mode or anything but I thought this to be weird and an opportunity for me to learn. Thanks in advance for any help!

It might be possible that you have 2 app.config files in your solution with 2 different connection strings.

OK, I figured it out and now when I think about it the answer was somewhat obvious. I always use using(){} blocks to ensure connections and similar objects are properly disposed and taken care of after they are used. The solution was to simply remove the using(myConnection){} block from the getKit method like this:
public DataTable getKit(SqlConnection connection, string itemNumber)
{
DataTable dt = new DataTable();
SqlConnection myConnection = connection;
MessageBox.Show(myConnection.ConnectionString);
SqlParameter paramItemNumber = new SqlParameter();
paramItemNumber.ParameterName = "#ItemNumber";
paramItemNumber.Value = itemNumber;
paramItemNumber.SqlDbType = System.Data.SqlDbType.VarChar;
try
{
string sql =
#"SELECT kits.Row_Id,
kits.Kit_Item_Number,
kits.Location_Code
FROM Inventory.dbo.Z_PV_Kits kits
WHERE kits.Kit_Item_Number=#ItemNumber
";
//myConnection.Open();
using (SqlCommand myCommand = new SqlCommand(sql, myConnection))
{
myCommand.Parameters.Add(paramItemNumber);
SqlDataReader reader = myCommand.ExecuteReader();
dt.Load(reader);
}
}
catch (Exception ex)
{
dt = null;
MessageBox.Show(ex.ToString());
}
return dt;
}
This will leave the connection intact but properly dispose of the command. Sorry for the long winded question with a short simple answer. Hope this might help someone someday.

How to determine an existing oracle database connection in C#?

Assuming that I call the method below with the right credentials:
private bool Connect(string username, string password)
{
string CONNSTRING = "Provider = MSDAORA; Data Source = ISDQA; User ID = {0}; Password = {1};";
OleDbConnection conn = new OleDbConnection();
string strCon = string.Format(CONNSTRING, username, password);
conn.ConnectionString = strCon;
bool isConnected = false;
try
{
conn.Open();
if (conn.State.ToString() == "Open")
isConnected = true;
}//try
catch (Exception ex)
{
lblErr.Text = "Connection error";
}//catch
finally
{
conn.Close();
}//finally
return isConnected;
}
I have successfully open the connection in my method below:
private bool ValidateUserCode(string usercode)
{
UserAccountDefine def = new UserAccountDefine();
UserAccountService srvc = new UserAccountService();
UserAccountObj obj = new UserAccountObj();
bool returnVal = false;
bool isValid = Connect(def.DB_DUMMY_USERCODE, def.DB_DUMMY_PASSWORD);
if (isValid)
{
obj.SQLQuery = string.Format(def.SQL_LOGIN, usercode.ToLower(), DateTime.Now.ToString("MM/dd/yyy"));
DataTable dt = srvc.Execute(obj, CRUD.READALL);
if (dt.Rows.Count == 1)
{
returnVal = true;
}
}
return returnVal;
}
The question is how can I determine the connection status in ValidateUserCode() method?
How can I close it afterwards?
Note:
I explicitly declare the string variables in UserAccountDefine(); so you don't have to worry about that.
I already tried declaring a new OleDbConnection conn inside the ValidateUserCode() to but the conn.State always returning "Closed".
UPDATE
I have a system with 2-layer security feature. 1st is in application and 2nd is on database. If a user logs in to the application, the username and password is also used to log him/her in to the database. Now, the scenario is when a user forgot his/her password, we can't determine the fullname, email and contact (which are maintained in the database) of the user. I just know his usercode. To determine the contact details, I have to open an active connection using a DUMMY_ACCOUNT.
Note that I never maintain the password inside the database.

First of all, you call Close() in your finally block, which means that at any point in your second method, the connection would be closed. Moreover, even if you don't Close() it,since conn is a local variable in Connect(), when you're back in ValidateUserCode(), the connection is already up for garbage collection, and when it's Dispose()d, it also closes automatically.
I sugges you either make it a member, pass it as an out parameter, return it by the Connect() method (and return null for failure, or something, if you don't like exceptions)..or redesign the code.
private OleDbConnection Connect(string username, string password)
{
string CONNSTRING = "Provider = MSDAORA; Data Source = ISDQA; User ID = {0}; Password = {1};";
OleDbConnection conn = new OleDbConnection();
string strCon = string.Format(CONNSTRING, username, password);
conn.ConnectionString = strCon;
try
{
conn.Open();
if (conn.State.ToString() == "Open")
return conn;
}//try
catch (Exception ex)
{
lblErr.Text = "Connection error";
}//catch
finally
{
//you don't want to close it here
//conn.Close();
}//finally
return null;
}

I am not sure how this information helps you.
I had similar problem while using OLEDB connection for Excel Reading. I didn't knew the answer. So, just I added a global variable for OleDbConnection initialized to null.
In my method, I used to check that null, if not close it and again open it.
if (con != null)
{
con.Close();
con.Dispose();
}
try
{
con = new OleDbConnection(connectionString);
}
catch (Exception ex)
{
MessageBox.Show("oledbConnection = " + ex.Message);
}
try
{
con.Open();
}
catch (Exception ex)
{
MessageBox.Show("connection open = " + ex.Message + "\n");
}
I could able to continue after this. You can try, if it works for you its good!

I'm not sure I follow the question quite right. My answer is based on the premise that you want to open/retrieve a connection, take an action, and close/release the connection afterward.
The code you include does not do that well. Typical DAO code resembles this pseudocode, in my case taken from some boilerplate code I use.
public DataSet FetchDataSet(string sql, IDictionary paramHash) {
var cnn = AcquireConnection();
var rtnDS = new DataSet();
try
{
var cmd = cnn.CreateCommand();
cmd.CommandText = sql;
SetParameters(cmd, paramHash);
IDbDataAdapter ida = new DataAdapter { SelectCommand = cmd };
LogSql(sql, paramHash, "FetchDataSet");
ida.Fill(rtnDS);
}
catch (Exception ex)
{
DebugWriteLn("Failed to get a value from the db.", ex);
throw;
}
finally
{
ReleaseConnection(cnn);
}
return rtnDS;
}
Note that the code above is strictly about communicating with the database. There is no assessment of whether the data is right or wrong. You might have a DAO that is a subclass of the one that contains the above code, and it might do this:
public MyItemType FindSomeValue(long Id)
{
const string sql = #"SELECT something from somewhere where id=:id";
var myParams = new Dictionary<string, long> { { "id", Id } };
var ds = FetchDataSet(sql, myParams);
return (from DataRow row in ds.Tables[0].Rows
select new Item
{
Id = Convert.ToInt64(row["ID"], CultureInfo.InvariantCulture),
Name = row["NAME"].ToString()
}).FirstOrDefault();
}
In fact, the above is pseudocode from a DAO implementation that I've used for years. It makes data access relatively painless. Note that there is some real code behind those methods like SetParameters (30 - 80 lines or so), and I have a bunch of other protected methods like FetchScalar, ExecuteSQL, etc.

Filling a DataTable in C# using MySQL

I'm attempting to fill a DataTable with results pulled from a MySQL database, however the DataTable, although it is initialised, doesn't populate. I wanted to use this DataTable to fill a ListView. Here's what I've got for the setting of the DataTable:
public DataTable SelectCharacters(string loginName)
{
this.Initialise();
string connection = "0.0.0.0";
string query = "SELECT * FROM characters WHERE _SteamName = '" + loginName + "'";
if (this.OpenConnection() == true)
{
MySqlCommand cmd = new MySqlCommand(query, connection);
MySqlDataAdapter returnVal = new MySqlDataAdapter(query,connection);
DataTable dt = new DataTable("CharacterInfo");
returnVal.Fill(dt);
this.CloseConnection();
return dt;
}
else
{
this.CloseConnection();
DataTable dt = new DataTable("CharacterInfo");
return dt;
}
}
And for the filling of the ListView, I've got:
private void button1_Click(object sender, EventArgs e)
{
string searchCriteria = textBox1.Text;
dt = characterDatabase.SelectCharacters(searchCriteria);
MessageBox.Show(dt.ToString());
listView1.View = View.Details;
ListViewItem iItem;
foreach (DataRow row in dt.Rows)
{
iItem = new ListViewItem();
for (int i = 0; i < row.ItemArray.Length; i++)
{
if (i == 0)
iItem.Text = row.ItemArray[i].ToString();
else
iItem.SubItems.Add(row.ItemArray[i].ToString());
}
listView1.Items.Add(iItem);
}
}
Is there something I'm missing? The MessageBox was included so I could see if it has populated, to no luck.
Thanks for any help you can give.

Check your connection string and instead of using
MySqlCommand cmd = new MySqlCommand(query, connection);
MySqlDataAdapter returnVal = new MySqlDataAdapter(query,connection);
DataTable dt = new DataTable("CharacterInfo");
returnVal.Fill(dt);
this.CloseConnection();
return dt;
you can use this one
MySqlCommand cmd = new MySqlCommand(query, connection);
DataTable dt = new DataTable();
dt.load(cmd.ExecuteReader());
return dt;

Well, I ... can't figure out what you have done here so I'll paste you my code with which I'm filling datagridview:
1) Connection should look something like this(if localhost is your server, else, IP adress of server machine):
string connection = #"server=localhost;uid=root;password=*******;database=*******;port=3306;charset=utf8";
2) Query is ok(it will return you something), but you shouldn't build SQL statements like that.. use parameters instead. See SQL injection.
3) Code:
void SelectAllFrom(string query, DataGridView dgv)
{
_dataTable.Clear();
try
{
_conn = new MySqlConnection(connection);
_conn.Open();
_cmd = new MySqlCommand
{
Connection = _conn,
CommandText = query
};
_cmd.ExecuteNonQuery();
_da = new MySqlDataAdapter(_cmd);
_da.Fill(_dataTable);
_cb = new MySqlCommandBuilder(_da);
dgv.DataSource = _dataTable;
dgv.DataMember = _dataTable.TableName;
dgv.AutoResizeColumns();
_conn.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
if (_conn != null) _conn.Close();
}
}
So, every time I want to display some content of table in mysql database I call this method, pass query string and datagridview name to that method. and, that is it.
For your sake, compare this example with your and see what can you use from both of it. Maybe, listview is not the best thing for you, just saying ...
hope that this will help you a little bit.

Debug your application and see if your sql statement/ connection string is correct and returns some value, also verify if your application is not throwing any exception.

Your connection string is invalid.
Set it as follows:
connection = "Server=myServer;Database=myDataBase;Uid=myUser;Pwd=myPassword;";
Refer: mysql connection strings

Here the following why the codes would not work.
Connection
The connection of your mySQL is invalid
Query
I guess do you want to search in the table, try this query
string query = "SELECT * FROM characters WHERE _SteamName LIKE '" + loginName + "%'";
notice the LIKE and % this could help to list all the data. for more details String Comparison Functions

Object reference not set to an instance of object

I have a function like this
public void GetTablesWithUpperCaseName()
{
SqlConnectionStringBuilder objConnectionString = new SqlConnectionStringBuilder();
objConnectionString.DataSource = txtHost.Text;
objConnectionString.UserID = txtUsername.Text;
objConnectionString.Password = txtPassword.Text;
objConnectionString.InitialCatalog = Convert.ToString(cmbDatabases.SelectedValue);
SqlConnection sConnection = new SqlConnection(objConnectionString.ConnectionString);
//To Open the connection.
sConnection.Open();
//Query to select table_names that have their names in uppercase letters.
string selectTablesWithUppercaseName = #"SELECT
NAME
FROM
sysobjects
WHERE
UPPER(name) COLLATE Latin1_General_BIN = name COLLATE Latin1_General_BIN
AND
OBJECTPROPERTY(ID,N'IsTable')=1
AND
OBJECTPROPERTY(ID,N'IsMSShipped')=0 ";
//Create the command object
SqlCommand sCommand = new SqlCommand(selectTablesWithUppercaseName, sConnection);
try
{
//Create the dataset
DataSet dsListOfTablesWithUppercaseName = new DataSet("sysobjects");
//Create the dataadapter object
SqlDataAdapter sDataAdapter = new SqlDataAdapter(selectTablesWithUppercaseName, sConnection);
//Provides the master mapping between the sourcr table and system.data.datatable
sDataAdapter.TableMappings.Add("Table", "sysobjects");
//Fill the dataset
sDataAdapter.Fill(dsListOfTablesWithUppercaseName);
//Bind the result combobox with foreign key table names
DataViewManager dvmListOfForeignKeys = dsListOfTablesWithUppercaseName.DefaultViewManager;
dgResultView.DataSource = dsListOfTablesWithUppercaseName.Tables["sysobjects"];
}
catch(Exception ex)
{
//All the exceptions are handled and written in the EventLog.
EventLog log = new EventLog("Application");
log.Source = "MFDBAnalyser";
log.WriteEntry(ex.Message);
}
finally
{
//If connection is not closed then close the connection
if(sConnection.State != ConnectionState.Closed)
{
sConnection.Close();
}
}
}
And another function for counting the rows generated from the previous functions. But this function
Null Reference Exception or Object
reference not set to an instance of
object..
Can anyone help me in this... why it is catching error only for the functions above and working fine for all other similar functions.
private void UpdateLabelText()
{
SqlConnectionStringBuilder objConnectionString = new SqlConnectionStringBuilder();
objConnectionString.DataSource = txtHost.Text;
objConnectionString.UserID = txtUsername.Text;
objConnectionString.Password = txtPassword.Text;
objConnectionString.InitialCatalog = Convert.ToString(cmbDatabases.SelectedValue);
SqlConnection sConnection = new SqlConnection(objConnectionString.ConnectionString);
//To Open the connection.
sConnection.Open();
try
{
int SelectedCellTotal = 0;
int counter;
// Iterate through the SelectedCells collection and sum up the values.
for(counter = 0;counter < (dgResultView.SelectedCells.Count);counter++)
{
if(dgResultView.SelectedCells[counter].FormattedValueType == Type.GetType("System.String"))
{
string value = null;
// If the cell contains a value that has not been commited,
if(dgResultView.IsCurrentCellDirty == true)
{
value = dgResultView.SelectedCells[counter].EditedFormattedValue.ToString();
}
else
{
value = dgResultView.SelectedCells[counter].FormattedValue.ToString();
}
if(value != null)
{
// Ignore cells in the Description column.
if(dgResultView.SelectedCells[counter].ColumnIndex != dgResultView.Columns["TABLE_NAME"].Index)
{
if(value.Length != 0)
{
SelectedCellTotal += int.Parse(value);
}
}
}
}
}
// Set the labels to reflect the current state of the DataGridView.
lblDisplay.Text = "There are Total " + dgResultView.RowCount + cmbOperations.SelectedItem.ToString();
}
catch(Exception ex)
{
//All the exceptions are handled and written in the EventLog.
EventLog log = new EventLog("Application");
log.Source = "MFDBAnalyser";
log.WriteEntry(ex.Message);
}
finally
{
//If connection is not closed then close the connection
if(sConnection.State != ConnectionState.Closed)
{
sConnection.Close();
}
}
}
Also the lblDisplay.Text is not taking proper spaces.
Waiting for reply

OK, I don't really have an answer why you're getting a "null reference exception" - but a few points to throw in, nonetheless:
I would use sys.tables instead of sysobjects and having to specify what type of object to query for
ALWAYS put your disposable SqlConnection and SqlCommand into using(.....) { ...... } blocks. That way, you won't need any finally {..} blocks, and .NET will take care of properly disposing of those objects when they're no longer needed
why do you use a DataSet when you only have a single table inside?? That's just unnecessary overhead - use a DataTable instead!
don't open the SqlConnection that early - wait 'til the very last moment, open it, execute query, close it again right away
actually, when using the SqlDataAdapter, you don't need to open the SqlConnection yourself at all - the SqlDataAdapter will do that for you (and close it again after it is done reading the data)
do not mix the retrieval of the data from the database with the binding to the UI element - this is a very bad practice. From the GetTablesWithUpperCaseName method, you should return something (like a DataTable) to the caller (the UI) and let the UI handle the binding process
along the same lines: that method should not be grabbing stuff from UI elements (like text boxes) itself - pass in those values as method parameters, to get a cleaner code - one that you might actually be able to reuse in another project some day
This is how I think your first method ought to look like
public DataTable GetTablesWithUpperCaseName(string server, string database,
string username, string password)
{
// Create the datatable
DataTable dtListOfTablesWithUppercaseName = new DataTable("tableNames");
SqlConnectionStringBuilder objConnectionString = new SqlConnectionStringBuilder();
objConnectionString.DataSource = server;;
objConnectionString.UserID = username;
objConnectionString.Password = password;
objConnectionString.InitialCatalog = database;
// Define the Query against sys.tables - much easier and cleaner!
string selectTablesWithUppercaseName =
"SELECT NAME FROM sys.tables WHERE UPPER(name) COLLATE Latin1_General_BIN = name COLLATE Latin1_General_BIN AND is_msshipped = 0";
// put your SqlConnection and SqlCommand into using blocks!
using (SqlConnection sConnection = new SqlConnection(objConnectionString.ConnectionString))
using (SqlCommand sCommand = new SqlCommand(selectTablesWithUppercaseName, sConnection))
{
try
{
// Create the dataadapter object
SqlDataAdapter sDataAdapter = new SqlDataAdapter(selectTablesWithUppercaseName, sConnection);
// Fill the datatable - no need to open the connection, the SqlDataAdapter will do that all by itself
// (and also close it again after it is done)
sDataAdapter.Fill(dtListOfTablesWithUppercaseName);
}
catch (Exception ex)
{
//All the exceptions are handled and written in the EventLog.
EventLog log = new EventLog("Application");
log.Source = "MFDBAnalyser";
log.WriteEntry(ex.Message);
}
}
// return the data table to the caller
return dtListOfTablesWithUppercaseName;
}