如何在C＃中添加第二个表并从数据集中的两个表中获取数据

Question

I m fetching data from database through c# to my asp.net file in dataset.. my c# code is like this:

{
Datalist a = e.Item.FindControl("abc") as DataList;
a.DataSource = GetData("select * from xyz where ID='" +((System.Data.DataRowView)(e.Item.DataItem)).Row[0] + "' AND LIMIT 1");

a.DataBind();
}

Its working fine.. but i want to add another table to it.. means i want to data from two table of database..

I know how to do it with ExecuteReader() and Mysql Command.. but i dont know anythiong about this DataSource.. I am new to asp and c# so pls .. any help.. thank you so much

here that function GetData()

private DataTable GetData(string query)
    {
        DataTable dt = new DataTable();
        string constr = ConfigurationManager.ConnectionStrings["SpeedyFlower"].ConnectionString;
        using (MySqlConnection con = new MySqlConnection(constr))
        {
            using (MySqlCommand cmd = new MySqlCommand(query))
            {
                using (MySqlDataAdapter sda = new MySqlDataAdapter())
                {
                    cmd.CommandType = CommandType.Text;
                    cmd.Connection = con;
                    sda.SelectCommand = cmd;
                    sda.Fill(dt);
                }
            }
            return dt;
        }
    }

Answer 1

Check if this works for you:

SqlDataAdapter adapter = new SqlDataAdapter(
      "SELECT * FROM employee1; SELECT * FROM employee2", connection);
adapter.TableMappings.Add("Table", "employee1");
adapter.TableMappings.Add("Table1", "employee2");
adapter.Fill(ds);

Now you have 2 tables in dataset ds as:

ds.Tables[0] //table employee1
ds.Tables[1] //table employee2

Put this code under GetData function (where you are makeing call to MySQLDataAdapter). In query just pass both the query for both the tables. Please note that TableMapping is optional and is not madatory.