QuickBooksCommand Class

In This Topic

Represents a SQL statement or stored procedure to execute against QuickBooks Online.

Syntax

Visual Basic
C#

'Declaration
 
Public Class QuickBooksCommand 
   Inherits Devart.Data.SqlShimCommand
   Implements System.ComponentModel.IComponent, System.Data.IDbCommand, System.ICloneable, System.IDisposable

public class QuickBooksCommand : Devart.Data.SqlShimCommand, System.ComponentModel.IComponent, System.Data.IDbCommand, System.ICloneable, System.IDisposable

Remarks

The QuickBooksCommand class provides the following methods for executing commands against QuickBooks Online:

Item	Description
ExecuteReader	Executes commands that return rows.
Devart.Common.DbCommandBase.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 QuickBooksException, the QuickBooksConnection may close. However, the user can reopen the connection and continue.

Example

The following example uses the ExecuteReader method of QuickBooksCommand, along with QuickBooksDataReader and QuickBooksConnection, to select rows from a table.

csharp

public void ReadMyData(string myConnString)
{
  string mySelectQuery = "SELECT Id, DisplayName FROM Customer";
  QuickBooksConnection quickBooksConnection = new QuickBooksConnection(myConnString);
  QuickBooksCommand quickBooksCommand = new QuickBooksCommand(mySelectQuery,quickBooksConnection);
  quickBooksConnection.Open();
  QuickBooksDataReader quickBooksReader = quickBooksCommand.ExecuteReader();
  try
  {
    while (quickBooksReader.Read())
    {
      Console.WriteLine(quickBooksReader.GetString(0) + ", " + quickBooksReader.GetString(1));
    }
  }
  finally
  {
  // always call Close when done reading.
  quickBooksReader.Close();
  // always call Close when done reading.
  quickBooksConnection.Close();
  }
}

Visual Basic

Public Sub ReadMyData(myConnString As String)
  Dim mySelectQuery As String = "SELECT Id, DisplayName FROM Customer"
  Dim quickBooksConnection As New QuickBooksConnection(myConnString)
  Dim quickBooksCommand As New QuickBooksCommand(mySelectQuery, quickBooksConnection)
  quickBooksConnection.Open()
  Dim quickBooksReader As QuickBooksDataReader = quickBooksCommand.ExecuteReader()
  Try
    While quickBooksReader.Read()
      Console.WriteLine(quickBooksReader.GetString(0) + ", " _
        + quickBooksReader.GetString(1))
    End While
  Finally
      ' always call Close when done reading.
      quickBooksReader.Close()
      ' always call Close when done with connection.
      quickBooksConnection.Close()
  End Try
End Sub

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.ComponentModel.Component
         System.Data.Common.DbCommand
            Devart.Common.DbCommandBase
               Devart.Data.SqlShimCommand
                  Devart.Data.QuickBooks.QuickBooksCommand

Reference

QuickBooksCommand Members
Devart.Data.QuickBooks Namespace
QuickBooksDataReader Class
QuickBooksConnection Class

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