C#/MySQL - 从数据库中获取日期

Question

在我的数据库中，我有一行日期类型。我想在我的 C# 程序中显示这些日期，但我在编写查询时遇到了问题。目前我尝试使用:

public string getAge(string Name) 
    {
        connection con = new connection(); //The object for the class with the connection string 
        con.conopen(); //opens the connection
        string Age = "";
        MySqlCommand cmd_getAge = new MySqlCommand("Select 'Age' from profile where Name = '" + Name + "';", con.con); 
        MySqlDataReader Reader = cmd_getAge.ExecuteReader();
        if (Reader.HasRows)
        {
            try
            {
                while (Reader.Read())
                {
                    Age = Reader.GetString(0);
                }
            }
            finally
            {
                Reader.Close();
                con.conclose();
            }
        }
        return Age;
    }

VS 返回我的结果只是“年龄”，也没有错误。

如果相关，我在 Windows 7 上使用 Visual Studio Ultimate 2013。

Answer 1

问题是您选择的是特定值“年龄”。如果您删除 Age 两边的引号，将改为选择该列的值。

public string getAge(string Name) 
    {
        connection con = new connection(); //The object for the class with the connection string 
        con.conopen(); //opens the connection
        string Age = "";
        MySqlCommand cmd_getAge = new MySqlCommand("Select Age from profile where Name = '" + Name + "';", con.con); 
        MySqlDataReader Reader = cmd_getAge.ExecuteReader();
        if (Reader.HasRows)
        {
            try
            {
                while (Reader.Read())
                {
                    Age = Reader.GetString(0);
                }
            }
            finally
            {
                Reader.Close();
                con.conclose();
            }
        }
        return Age;
    }