Question

我在表格中有5个名字，我需要把它们放在一个arraylist中....

任何建议???

            int rowsinmachgrp = getnumofrows();//gets no of rows in table

            SqlConnection dataConnection = new SqlConnection();
            dataConnection.ConnectionString = ConfigurationManager.ConnectionStrings["SumooHAgentDBConnectionString"].ConnectionString;
            SqlCommand dataCommand =
                    new SqlCommand("select MachineGroupName from MachineGroups", dataConnection);

            {ArrayList names = new ArrayList();
                dataConnection.Open();
                ArrayList names = dataCommand.ExecuteScalar();

由于

Answer 1

这是你的：

List<string> names = new List<string>();
using(SqlConnection db = new SqlConnection(ConfigurationManager...))
{
    db.Open();
    SqlCommand cmd = new SqlCommand("Select ....", db);

    using(SqlDataReader rd = cmd.ExecuteReader())
    {
        while(rd.Read())
        {
           names.Add(rd.GetString(0));
        }
    }
}

未经测试！

Answer 2

更正代码：

ArrayList names = new ArrayList();

int rowsinmachgrp = getnumofrows();//gets no of rows in table

SqlConnection dataConnection = new SqlConnection();
dataConnection.ConnectionString = ConfigurationManager.ConnectionStrings["SumooHAgentDBConnectionString"].ConnectionString;
SqlCommand dataCommand = new SqlCommand("select MachineGroupName from MachineGroups", dataConnection);


  dataConnection.Open();
  SqlDataReader rdr = dataCommand.ExecuteReader();
  while (rdr.Read())
  {
    names.Add(rdr.GetString(0));
  }
dataCommand.Dispose();
dataConnection.Dispose();

请注意，在我解决您的直接问题时，您还会遇到很多其他问题，例如您的rowsinmachgrp变量，使用ArrayList，而不是使用{{ 1}}：）

将表中的名字放入arraylist？

2 个答案: