Iterating Through A DataSet from MySQL database : DataSet « ADO.net Database « ASP.NET Tutorial






<%@ Page Language="C#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.Odbc" %>
<script runat="server">

    void Page_Load(object sender, EventArgs e)
    {
        string ConnectionString = Convert.ToString(ConfigurationSettings.AppSettings["MySQLConnectString"]);
        string CommandText = "SELECT AuthorName, AuthorCity, AuthorContact_Email, AuthorWebsite FROM Author";
        OdbcConnection myConnection = new OdbcConnection(ConnectionString);
        OdbcCommand myCommand = new OdbcCommand(CommandText, myConnection);

        OdbcDataAdapter myAdapter = new OdbcDataAdapter();

        myAdapter.SelectCommand = myCommand;

        DataSet myDataSet = new DataSet();

        try {
          myConnection.Open();
          myAdapter.Fill(myDataSet, "Author");

       } catch (Exception ex) {
          throw (ex);
       } finally {
          myConnection.Close();
       }

       for (int i=0; i<=myDataSet.Tables["Author"].Rows.Count-1; i++)
       {
          Author p = new Author();
          p.Name = myDataSet.Tables["Author"].Rows[i]["AuthorName"].ToString();
          p.City = myDataSet.Tables["Author"].Rows[i]["AuthorCity"].ToString();
          p.Email = myDataSet.Tables["Author"].Rows[i]["AuthorContact_Email"].ToString();
          p.Website = myDataSet.Tables["Author"].Rows[i]["AuthorWebsite"].ToString();

          Label1.Text += p.ToString();
       }
    }
    public class Author
    {
        public string Name;
        public string City;
        public string Email;
        public string Website;

        public Author()
        {}

        public string ToString()
        {
            string description = "";
            description = "Name : " + this.Name + "<br />";
            description += "City : " + this.City + "<br />";
            description += "Contact : <a href=mailto:" + this.Email + ">" + this.Email + "</a><br/>";
            description += "Homesite : <a href='" + this.Website + "'>" + this.Website + "</a><br/><br/>";

            return description;
        }
    }

</script>
<html>
<head>

</head>
<body>
    <asp:Label id="Label1" runat="server"></asp:Label>
</body>
</html>

File: Web.config

<configuration>
    <appSettings>
      <add key="MySQLConnectString"
           value="driver={MySQL ODBC 3.51 Driver};server=localhost;database=Books;uid=YourID;pwd=letmein;" />
    </appSettings>
</configuration>








18.27.DataSet
18.27.1.The DataSet object represents an in-memory database.
18.27.2.Fill a DataSet
18.27.3.Iterating Through A DataSet
18.27.4.Fill DataSet with SqlDataAdapter
18.27.5.Use OleDbDataAdapter to fill DataSet
18.27.6.Iterating Through A DataSet from MySQL database
18.27.7.List Binding To A DataSet
18.27.8.Pulling Single Values From Dataset Bounded Lists
18.27.9.Create DataSet by your own
18.27.10.Serialization capabilities of DataSet