テーブルから情報を削除するには、DELETE ステートメントを使用します。

DELETE 構文

DELETE ステートメントには、次の例に示すように、FROM 句のテーブル名とWHERE 句の行の主キーが必要です。

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

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

次の例に示すように、ExecuteNonQuery メソッドを使って、データ操作コマンドを実行し影響を受ける行数を取得できます。

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