To delete information from a table, use DELETE statements.

DELETE Syntax

The DELETE statement requires the table name in the FROM clause and the row's primary key in the WHERE clause, as shown in the following example:

<delete_statement> ::= DELETE FROM <table_name> WHERE { ListId = <expression> } [ { AND | OR } ... ]

<expression> ::=
  | @ <parameter> 
  | ?
  | <literal>

You can use the ExecuteNonQuery method to execute data manipulation commands and retrieve the number of affected rows, as shown in the following example:

C#

String connectionString = "user=myuseraccount;password=mypassword;URL=http://localhost:2080;qbxmlversion=3.0;";
using (QuickBooksPOSConnection connection = new QuickBooksPOSConnection(connectionString)) {
  int rowsAffected;
  QuickBooksPOSCommand cmd = new QuickBooksPOSCommand("DELETE FROM Customers WHERE ListId = @myListId", connection);
  cmd.Parameters.Add(new QuickBooksPOSParameter("myListId","-1045625500155013667"));
  rowsAffected = cmd.ExecuteNonQuery();
}

VB.NET

  
Dim connectionString As [String] = "user=myuseraccount;password=mypassword;URL=http://localhost:2080;qbxmlversion=3.0;"
Using connection As New QuickBooksPOSConnection(connectionString)
  Dim rowsAffected As Integer
  Dim cmd As New QuickBooksPOSCommand("DELETE FROM Customers WHERE ListId = @myListId", connection)
  cmd.Parameters.Add(New QuickBooksPOSParameter("myListId", "-1045625500155013667"))
  rowsAffected = cmd.ExecuteNonQuery()
End Using