使用 OleDbCommand 获取数据库行列值

Question

我在使用 OleDbCommand

从数据库读取行值时遇到问题

当前代码：

private static string TryCheckDateTime(OleDbConnection cn, string table, string colName, string dataColumn)
    {
        if (dataColumn.Contains(AllowedValues.String.ToString()))
        {
            using (OleDbCommand cmd = new OleDbCommand())
            {
                OleDbDataReader rowItems;
                // Connection to Database
                cmd.Connection = cn;
                // Query script: "SELECT TOP 5 {0} FROM [DBName].[dbo].[{1}]"
                cmd.CommandText = string.Format(Values.VerifyDatetime, colName, table);
                // Gets top 5 rows
                rowItems = cmd.ExecuteReader(CommandBehavior.Default);

                foreach (var row in rowItems)
                {
                    // how can I get that row data?
                    var a = row;
                }
            }
        }
        return null;
    }

以及我想要获得的价值：

Answer 1

你试过了吗

string test;
while (rowItems.Read())
    test = rowItems[0].ToString();

?

Answer 2

也许这会有所帮助。先使用 .HasRows 然后使用 .Read()

  if (rowItems.HasRows)
      {
        rowItems.Read();
              foreach(var row in rowItems)
                {

                    var a = row["sampleonly"].ToString(); // or something
                }
      }
 else
      {
            // do something
      }

使用 OleDbCommand 获取数据库行列值

get Database row column value with OleDbCommand

c#

database-connection

oledbconnection