2026/10/20 -... SqlCommand command = new SqlCommand(sql, connection); connection.Open ... Use SqlCommand.ExecuteReader() and call Read() in a loop; each successful ...
2026/2/25 -I would look at the account that your task agent is running under and make sure it able to access kinetic or password hasn't expired.
2026/5/29 -Retrieve database records efficiently in C# using SqlDataReader. Learn how to iterate through result sets and read column data for high-performance apps.
2025/11/27 -... SqlCommand command = new SqlCommand(query, connection); connection.Open(); SqlDataReader reader = command.ExecuteReader(); if (reader.Read()) { return new ...
2026/1/5 -The error occurs when the value persisted in a field is higher (in characters count) than the one the database column max value allows. For example if there is ...
2026/10/20 -Execute a command with ExecuteReader or ExecuteReaderAsync . · Resolve column ordinals for the current result. · Call Read once for each row. · Check nullable ...
A.ExecuteReaderメソッドがオブジェクトを返すため、newでインスタンスを作成しなくても、drにSqlDataReaderクラスのオブジェクトを格納できます。 このため、newを付けると...
A.ExecuteReader を使うのではなく、ExecuteScalar を使ってみてはどうでしょう。 参考 https://hosopro.blogspot.com/2016/09/sqlco...
Q.Visual Studio 2019 visual basicでaccdbレコード抽出について ①のようにエラーが出ます「*」で囲んでるところをとれば接続はできるrd = cmd.Execute...
A.cmd.Connection = cn sqlcommandのconnectionにcnを設定しているが、cnはnewでインスタンス作成したけどそれっきりで、 実際にopenしているのはconn...
2025/12/8 -SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget, ...
2026/1/7 -The function where the malicious payload was accessed in the attacked process. Example: System.Data.SqlClient.SqlCommand.ExecuteReader(). Exploits. Any ...
2026/4/22 -SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at Microsoft.Data.SqlClient.
2025/11/27 -... SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet ... ExecuteReader(CommandBehavior behavior, String method) at Co3.ID.Dw.DAL ...