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SQLiteCommand Class
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Devart.Data.SQLite Namespace : SQLiteCommand Class

Represents a SQL statement to execute against SQLite.

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.ComponentModel.Component
         System.Data.Common.DbCommand
            Devart.Common.DbCommandBase
               Devart.Data.SQLite.SQLiteCommand

Syntax

Visual Basic (Declaration) 
Public Class SQLiteCommand 
   Inherits Devart.Common.DbCommandBase
   Implements IComponentIDbCommandICloneableIDisposable 
C# 
public class SQLiteCommand : Devart.Common.DbCommandBase, IComponentIDbCommandICloneableIDisposable  

Remarks

The SQLiteCommand class provides the following methods for executing commands against the SQLite database:
Item Description
ExecuteReader Executes commands that return rows.
ExecutePageReader Returns a specific subset of rows when paging through the results of a query.
ExecuteNonQuery Executes SQL commands such as INSERT, DELETE, UPDATE.
ExecuteScalar Retrieves a single value (for example, an aggregate value) from a data source.

If execution of the command results in a fatal SQLiteException, the SQLiteConnection may close. However, the user can reopen the connection and continue.

This class supports cross-form data binding with the InterForm Technology.

Example

The following example uses the ExecuteReader method of SQLiteCommand, along with SQLiteDataReader and SQLiteConnection, to select rows from a table.
C#csharpCopy Code
public void ReadMyData(string myConnString)
{
  string mySelectQuery = "SELECT DeptNo, DName FROM Dept";
  SQLiteConnection sqConnection = new SQLiteConnection(myConnString);
  SQLiteCommand sqCommand = new SQLiteCommand(mySelectQuery,sqConnection);
  sqConnection.Open();
  SQLiteDataReader sqReader = sqCommand.ExecuteReader();
  try
  {
    while (sqReader.Read())
    {
      Console.WriteLine(sqReader.GetInt32(0).ToString() + ", " + sqReader.GetString(1));
    }
  }
  finally
  {
  // always call Close when done reading.
  sqReader.Close();
  // always call Close when done reading.
  sqConnection.Close();
  }
}
C#Visual BasicCopy Code
Public Sub ReadMyData(myConnString As String)
  Dim mySelectQuery As String = "SELECT DeptNo, DName FROM Dept"
  Dim sqConnection As New SQLiteConnection(myConnString)
  Dim sqCommand As New SQLiteCommand(mySelectQuery, sqConnection)
  sqConnection.Open()
  Dim sqReader As SQLiteDataReader = sqCommand.ExecuteReader()
  Try
    While sqReader.Read()
      Console.WriteLine(sqReader.GetInt32(0).ToString() + ", " _
        + sqReader.GetString(1))
    End While
  Finally
      ' always call Close when done reading.
      sqReader.Close()
      ' always call Close when done with connection.
      sqConnection.Close()
  End Try
End Sub

Requirements

Namespace: Devart.Data.SQLite

Platforms:Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family, Windows 7, Windows 8, Windows 10, Windows Server 2012 family.

See Also