SqlCeCommand 생성자 (String, SqlCeConnection, SqlCeTransaction)
쿼리의 텍스트, SqlCeConnection, SqlCeTransaction 등을 사용하여 SqlCeCommand 클래스의 새 인스턴스를 초기화합니다.
네임스페이스: System.Data.SqlServerCe
어셈블리: System.Data.SqlServerCe(System.Data.SqlServerCe.dll)
구문
‘선언
Public Sub New ( _
commandText As String, _
connection As SqlCeConnection, _
transaction As SqlCeTransaction _
)
‘사용 방법
Dim commandText As String
Dim connection As SqlCeConnection
Dim transaction As SqlCeTransaction
Dim instance As New SqlCeCommand(commandText, _
connection, transaction)
public SqlCeCommand(
string commandText,
SqlCeConnection connection,
SqlCeTransaction transaction
)
public:
SqlCeCommand(
String^ commandText,
SqlCeConnection^ connection,
SqlCeTransaction^ transaction
)
new :
commandText:string *
connection:SqlCeConnection *
transaction:SqlCeTransaction -> SqlCeCommand
public function SqlCeCommand(
commandText : String,
connection : SqlCeConnection,
transaction : SqlCeTransaction
)
매개 변수
- commandText
유형: System.String
쿼리 텍스트입니다.
- connection
유형: System.Data.SqlServerCe.SqlCeConnection
데이터 원본에 대한 연결을 나타내는 SqlCeConnection입니다.
- transaction
유형: System.Data.SqlServerCe.SqlCeTransaction
SqlCeCommand 가 실행되는 트랜잭션입니다.
주의
다음 표에서는 SqlCeCommand 인스턴스의 초기 속성 값을 보여 줍니다.
속성 |
초기 값 |
---|---|
cmdText |
|
Text |
|
connection 매개 변수에 대한 값인 새 SqlCeConnection입니다. |
관련 속성을 설정하여 이러한 모든 매개 변수의 값을 변경할 수 있습니다.
예
다음 예제에서는 SqlCeCommand를 만들고 그 속성의 일부를 설정합니다.
Dim cmdText As String = "INSERT INTO FactSalesQuota " & _
"(EmployeeKey, TimeKey, SalesAmountQuota) " & _
"VALUES (2, 1158, 150000.00)"
Dim conn As New SqlCeConnection("Data Source = AdventureWorks.sdf;")
conn.Open()
' Start a local transaction; SQL Mobile supports the following
' isolation levels: ReadCommitted, RepeatableRead, Serializable
'
Dim tx As SqlCeTransaction = conn.BeginTransaction(IsolationLevel.ReadCommitted)
' By default, commands run in auto-commit mode;
'
Dim cmd As New SqlCeCommand(cmdText, conn, tx)
Try
cmd.ExecuteNonQuery()
' Commit the changes to disk if everything above succeeded;
' Use Deferred mode for optimal performance; the changes will
' be flashed to disk within the timespan specified in the
' ConnectionString 'FLUSH INTERVAL' property;
'
tx.Commit(CommitMode.Deferred)
' Alternatively, you could use:
' tx.Commit(CommitMode.Immediate);
'
' or use default (Deferred) commit mode:
' tx.Commit()
Catch e As Exception
' Handle errors here
'
tx.Rollback()
Finally
conn.Close()
End Try
string cmdText = "INSERT INTO FactSalesQuota " +
"(EmployeeKey, TimeKey, SalesAmountQuota) " +
"VALUES (2, 1158, 150000.00)";
SqlCeConnection conn = new SqlCeConnection("Data Source = AdventureWorks.sdf;");
conn.Open();
// Start a local transaction; SQL Mobile supports the following
// isolation levels: ReadCommitted, RepeatableRead, Serializable
//
SqlCeTransaction tx = conn.BeginTransaction(IsolationLevel.ReadCommitted);
SqlCeCommand cmd = new SqlCeCommand(cmdText, conn, tx);
try
{
cmd.ExecuteNonQuery();
// Commit the changes to disk if everything above succeeded;
// Use Deferred mode for optimal performance; the changes will
// be flushed to disk within the timespan specified in the
// ConnectionString 'FLUSH INTERVAL' property;
//
tx.Commit(CommitMode.Deferred);
// Alternatively, you could use:
// tx.Commit(CommitMode.Immediate);
//
// or use default (Deferred) commit mode:
// tx.Commit()
}
catch (Exception)
{
// Handle errors here
//
tx.Rollback();
}
finally
{
conn.Close();
}