Property Value
The parameters of a SQL statement. The default value is an empty collection.
The following example creates a
SQLiteConnection,
SQLiteCommand, fills its parameters and displays them. An UPDATE statement with the parameters involved is executed then.
static void CreateCommand(SQLiteConnection sqConnection, string mySelectQuery, SQLiteParameter[] myParamArray)
{
SQLiteCommand sqCommand = new SQLiteCommand(mySelectQuery, sqConnection);
string myMessage = "";
for (int i = 0; i < myParamArray.Length; i++)
{
sqCommand.Parameters.Add(myParamArray[i]);
myMessage += sqCommand.Parameters[i].ToString() + "\n";
}
Console.Write(myMessage);
try
{
sqConnection.Open();
sqCommand.ExecuteNonQuery();
}
finally
{
sqConnection.Close();
}
}
static void Main(string[] args)
{
SQLiteParameter[] myParams = new SQLiteParameter[]
{
new SQLiteParameter("DeptNo", 10),
new SQLiteParameter("DName", "COUNTING")
};
SQLiteConnection sqConnection1 = new SQLiteConnection(
"DataSource=mydatabase.db;");
CreateCommand(sqConnection1,"UPDATE Dept SET DName = :DName WHERE DeptNo = :DeptNo",myParams);
}
Public Sub CreateCommand(ByVal sqConnection As Devart.Data.SQLite.SQLiteConnection, _
ByVal mySelectQuery As String, ByVal myParamArray() As Devart.Data.SQLite.SQLiteParameter)
Dim sqCommand As New Devart.Data.SQLite.SQLiteCommand(mySelectQuery, sqConnection)
Dim myMessage As String = ""
Dim i As Integer
For i = 0 To (myParamArray.Length - 1)
sqCommand.Parameters.Add(myParamArray(i))
myMessage = String.Concat(myMessage, " ", sqCommand.Parameters(i).ToString())
Next
Console.WriteLine(myMessage)
Try
sqConnection.Open()
sqCommand.ExecuteNonQuery()
Finally
sqConnection.Close()
End Try
End Sub
Sub Main()
Dim myP1 As New Devart.Data.SQLite.SQLiteParameter
myP1.ParameterName = "DeptNo"
myP1.Value = 10
Dim myP2 As New Devart.Data.SQLite.SQLiteParameter
myP2.ParameterName = "DName"
myP2.Value = "ACCOUNTING"
Dim myParams(1) As Devart.Data.SQLite.SQLiteParameter
myParams(0) = myP1
myParams(1) = myP2
Dim sqConnection1 As New Devart.Data.SQLite.SQLiteConnection( _
"DataSource=mydatabase.db;")
CreateCommand(sqConnection1, "UPDATE Dept SET DName = :DName WHERE DeptNo = :DeptNo", myParams)
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2