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 { Id = <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 = "InitiateOAuth=GETANDREFRESH;OAuthClientId=MyApplicationId;OAuthClientSecret=MyApplicationSecret;CallbackURL=http://localhost:33333;LocationId=MyDefaultLocation";
using (SquareConnection connection = new SquareConnection(connectionString)) {
  int rowsAffected;
  SquareCommand cmd = new SquareCommand("DELETE FROM Payments WHERE Id = @myId", connection);
  cmd.Parameters.Add(new SquareParameter("myId","Jq74mCczmFXk1tC10GB"));
  rowsAffected = cmd.ExecuteNonQuery();
}

VB.NET

  
Dim connectionString As [String] = "InitiateOAuth=GETANDREFRESH;OAuthClientId=MyApplicationId;OAuthClientSecret=MyApplicationSecret;CallbackURL=http://localhost:33333;LocationId=MyDefaultLocation"
Using connection As New SquareConnection(connectionString)
  Dim rowsAffected As Integer
  Dim cmd As New SquareCommand("DELETE FROM Payments WHERE Id = @myId", connection)
  cmd.Parameters.Add(New SquareParameter("myId", "Jq74mCczmFXk1tC10GB"))
  rowsAffected = cmd.ExecuteNonQuery()
End Using