C# SQL Datareader返回值

我想返回我的数据库值，在本例中为：我的SQL浏览器历史记录

我所拥有的：

// lezen van records
public void lezen(string tabelNaam)
{
    // parameters aanmaken en opvullen
    SqlParameter Para1 = new SqlParameter();
    Para1.ParameterName = "@tabelNaam";
    Para1.Value = tabelNaam;
    // maken van een sql verbinding
    SqlConnection Conn = new SqlConnection();
    Conn.ConnectionString = @"Integrated security=true; Initial Catalog=OpdrachtW3; Data Source=LAPTOP-ROY\SQLEXPRESS";
    Conn.Open();
    // Aanmaken van Query
    SqlCommand Cmd = new SqlCommand();
    // Aangeven dat de Query plaatsvind op bovenstaande connectie
    Cmd.Connection = Conn;

    Cmd.CommandText = string.Format("select * from [{0}]", tabelNaam);
    Cmd.Parameters.Add(Para1);

    SqlDataReader dr = Cmd.ExecuteReader();

    List<string> RecordsInfo = new List<string>();
    int i = 0;

    Browser brw = new Browser();
    while (dr.Read())
    {
        i++;
        //int favonr = dr.GetInt32(0);
        //string websiteUrl = dr.GetString(1);
        //string websiteNaam = dr.GetString(2);
        dbRecords = dr.GetString(1);
        RecordsInfo.Add(dr["websiteUrl"].ToString());
        //RecordsInfo = dr.GetString(1).ToString();
    }
    dr.Close();
    Conn.Close();
    return;
}

这很简单

只需让函数按如下方式返回RecordInfo：

public List<string> lezen(string tabelNaam)
{
   ....

   return RecordsInfo;
}

---

在循环的每次迭代中，您已经从DataReader获得了每个值。你到底有什么问题？你的历史会记录在RecordsInfo收藏中。此代码中没有可更改的内容将您的项目添加到列表中并返回。

public List<string> lezen(string tabelNaam)
{
   ....

   return RecordsInfo;
}

var x = df.lezen(tabel);