OleDbCommand 是用于在 ASP.NET 中与 OleDb 数据源进行交互的对象。以下是 OleDbCommand 的常用用法:
OleDbCommand command = new OleDbCommand();
command.CommandText = "SELECT * FROM TableName";
command.Connection = connection; // connection 是一个 OleDbConnection 对象
OleDbDataReader reader = command.ExecuteReader();
while (reader.Read())
{
// 处理每一行的数据
}
reader.Close();
int rowsAffected = command.ExecuteNonQuery();
command.CommandText = "SELECT * FROM TableName WHERE ColumnName = ?";
command.Parameters.AddWithValue("ColumnName", columnValue);
OleDbTransaction transaction = connection.BeginTransaction();
command.Transaction = transaction;
try
{
// 执行多个 OleDbCommand 对象
transaction.Commit();
}
catch
{
transaction.Rollback();
}
finally
{
transaction.Dispose();
}
这些是 OleDbCommand 的基本用法,你可以根据具体的需求进行调整和扩展。