Question

我有OleDbConnection连接到访问数据库。但是当我执行查询时，OleDbCommand会抛出异常，说该命令无效。我完全相信命令是有效的。

 string ret = "";

string command = "UPDATE tblUser set username = ?, password = ? where ID = 1";
dbConn.Open();

using (var dbCommand = dbConn.CreateCommand())
{
    dbCommand.Connection = dbConn;
    dbCommand.CommandText = command;
    dbCommand.Parameters.AddWithValue("?", username);
    dbCommand.Parameters.AddWithValue("?", password);

    int temp = dbCommand.ExecuteNonQuery();
    if (temp > 0)
        ret = "sukses";
    dbConn.Close();                
}
return ret;

但是，当执行上面的代码时，它会在Syntax error in UPDATE statement.处抛出异常dbCommand.ExecuteNonQuery()。如何处理这个问题？

Answer 1

你需要用括号转义PASSWORD，因为它是一个保留关键字，

UPDATE tblUser set username = ?, [password] = ? where ID = 1

MS Access Reserved Keywords

OleDbCommand在有效命令文本上抛出异常

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