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 { AccountId = <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;OrganizationUrl=https://myaccount.crm.dynamics.com/;";
using (CDSConnection connection = new CDSConnection(connectionString)) {
  int rowsAffected;
  CDSCommand cmd = new CDSCommand("DELETE FROM Accounts WHERE AccountId = @myAccountId", connection);
  cmd.Parameters.Add(new CDSParameter("myAccountId","'00000000-0000-0000-0000-000000000000'"));
  rowsAffected = cmd.ExecuteNonQuery();
}

VB.NET

  
Dim connectionString As [String] = "InitiateOAuth=GETANDREFRESH;OrganizationUrl=https://myaccount.crm.dynamics.com/;"
Using connection As New CDSConnection(connectionString)
  Dim rowsAffected As Integer
  Dim cmd As New CDSCommand("DELETE FROM Accounts WHERE AccountId = @myAccountId", connection)
  cmd.Parameters.Add(New CDSParameter("myAccountId", "'00000000-0000-0000-0000-000000000000'"))
  rowsAffected = cmd.ExecuteNonQuery()
End Using