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 = "User=MyUserAccount;Password=MyPassword;Auth Scheme=NTLM;URL=http://sharepointserver/mysite;";
using (SharePointConnection connection = new SharePointConnection(connectionString)) {
  int rowsAffected;
  SharePointCommand cmd = new SharePointCommand("DELETE FROM Calendar WHERE Id = @myId", connection);
  cmd.Parameters.Add(new SharePointParameter("myId","1"));
  rowsAffected = cmd.ExecuteNonQuery();
}

VB.NET

  
Dim connectionString As [String] = "User=MyUserAccount;Password=MyPassword;Auth Scheme=NTLM;URL=http://sharepointserver/mysite;"
Using connection As New SharePointConnection(connectionString)
  Dim rowsAffected As Integer
  Dim cmd As New SharePointCommand("DELETE FROM Calendar WHERE Id = @myId", connection)
  cmd.Parameters.Add(New SharePointParameter("myId", "1"))
  rowsAffected = cmd.ExecuteNonQuery()
End Using