using System;
using System.Diagnostics;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.Odbc;


public class MainClass {
    [STAThread]
    static void Main() {
        OdbcConnection cn;
        try {
            cn = new OdbcConnection();
            cn.ConnectionString = "driver={SQL Serve};server=.;uid=admin;pwd=pw;database=biblio";
            cn.Open();
        } catch (OdbcException ex) {
            if (ex.InnerException != null) {
                Debug.WriteLine("InnerException:" + ex.InnerException.Message);
            }
            MessageBox.Show(ex.ToString());
            Debug.WriteLine("Message:" + ex.Message.ToString());
            Debug.WriteLine("Source:" + ex.Source.ToString());
            Debug.WriteLine("StackTrace:" + ex.StackTrace.ToString());
            Debug.WriteLine("TargetSite:" + ex.TargetSite.ToString()); // Not in OleDB

            if (ex.HelpLink != null) {
                Debug.WriteLine("HelpLink:" + ex.HelpLink);
            }
        }
    }
}

    

   


using System;
using System.Data; 
using System.Data.Odbc; 

class OdbcProvider
{
   static void Main(string[] args)
   {
      string connString = @"dsn=northwindodbc";
      string sql = @"select * from employees";

      OdbcConnection conn = null;
      OdbcDataReader reader = null;

      try {
         conn = new OdbcConnection(connString);
         conn.Open();

         OdbcCommand cmd = new OdbcCommand(sql, conn);
         reader = cmd.ExecuteReader();

         Console.WriteLine(
            "Querying database {0} with query {1}
"
            , conn.Database
            , cmd.CommandText
            );
         Console.WriteLine("First Name	Last Name
");

         while(reader.Read()) {
            Console.WriteLine(
               "{0} | {1}" 
               , reader["FirstName"].ToString().PadLeft(10) 
               , reader[1].ToString().PadLeft(10)
               );
         }
      } catch (Exception e) {
         Console.WriteLine("Error: " + e);
      } finally {
         reader.Close();
         conn.Close();
      }
   }
}

           
          

   



/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.Data.Odbc;

namespace Client.Chapter_13___ADO.NET
{
    public class CreatingConnectionToODBC
    {
        static void Main(string[] args)
        {
            OdbcConnection MyConnection = new OdbcConnection(
            "DRIVER={MySQL};SERVER=TESTSRV;DATABASE=MyDatabase;UID=root;PWD=""");
            MyConnection.Open();            
        }
    }
}


           
          

   

using System;
using System.Data;
using ByteFX.Data.MySqlClient;

   class MySqlConnect
   {
      static void Main() 
      {
         string connString = @"Data Source=server;Database=mydb;User ID=username;Password=pwd;Command Logging=false";
         MySqlConnection conn = new MySqlConnection(connString);

         try 
         {
            conn.Open();
            Console.WriteLine("Connection opened.");

            Console.WriteLine("Connection Properties:");   
            Console.WriteLine("	Connection String: {0}",conn.ConnectionString);    
            Console.WriteLine("	Database: {0}",conn.Database);   
            Console.WriteLine("	ServerVersion: {0}",
               conn.ServerVersion);
            Console.WriteLine(
               "	State: {0}",
               conn.State);
         } 
         catch (MySqlException e) 
         {
            Console.WriteLine("Error: " + e);  
         }
         finally 
         {
            conn.Close();
            Console.WriteLine("Connection closed.");
         }
      }
   }



           
          

   

using System;
using System.Data;            // use ADO.NET namespace
using System.Data.SqlClient;  // use SQL Server provider

class DataRelationExample
{
   public static void Main() 
   {
      SqlConnection thisConnection = new SqlConnection("server=(local)SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI");

      SqlDataAdapter thisAdapter = new SqlDataAdapter("SELECT CustomerID, CompanyName FROM Customers", thisConnection);

      SqlCommandBuilder thisBuilder = new SqlCommandBuilder(thisAdapter);

      DataSet thisDataSet = new DataSet();

      SqlDataAdapter custAdapter = new SqlDataAdapter("SELECT * FROM Customers", thisConnection);
      SqlDataAdapter orderAdapter = new SqlDataAdapter("SELECT * FROM Orders", thisConnection);
      custAdapter.Fill(thisDataSet, "Customers");
      orderAdapter.Fill(thisDataSet, "Orders");

      DataRelation custOrderRel = thisDataSet.Relations.Add("CustOrders",
         thisDataSet.Tables["Customers"].Columns["CustomerID"],
         thisDataSet.Tables["Orders"].Columns["CustomerID"]);
         
      foreach (DataRow custRow in thisDataSet.Tables["Customers"].Rows)
      {
         Console.WriteLine("Customer ID: " + custRow["CustomerID"] + " Name: " + custRow["CompanyName"]);
         foreach (DataRow orderRow in custRow.GetChildRows(custOrderRel)) {
            Console.WriteLine("  Order ID: " + orderRow["OrderID"]);
         }
      }
      

      custOrderRel.Nested = true;

      thisDataSet.WriteXml(@"nwinddata.xml");
      Console.WriteLine(@"Successfully wrote XML output to file nwinddata.xml");

   }
}


           
          

   

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
using System.IO;
 
 
public class Form1 : System.Windows.Forms.Form {
   private System.Windows.Forms.Button button1;
   private System.Windows.Forms.TextBox textBox1;
   private System.Windows.Forms.PictureBox pictureBox1;
   private Images images;

   private System.ComponentModel.Container components = null;

   public Form1() {
      InitializeComponent();

      images = new Images();

      if (images.GetRow()) {
            this.textBox1.Text = images.GetFilename();
            this.pictureBox1.Image = (Image)images.GetImage();
      } else {
            this.textBox1.Text = "DONE";
            this.pictureBox1.Image = null;
      }
   }

   private void InitializeComponent() {
      this.button1 = new System.Windows.Forms.Button();
      this.textBox1 = new System.Windows.Forms.TextBox();
      this.pictureBox1 = new System.Windows.Forms.PictureBox();
      this.SuspendLayout();

      this.button1.Location = new System.Drawing.Point(200, 8);
      this.button1.Name = "button1";
      this.button1.TabIndex = 0;
      this.button1.Text = "Next";
      this.button1.Click += new System.EventHandler(this.button1_Click);

      this.textBox1.Location = new System.Drawing.Point(24, 8);
      this.textBox1.Name = "textBox1";
      this.textBox1.Size = new System.Drawing.Size(144, 20);
      this.textBox1.TabIndex = 1;
      this.textBox1.Text = "";

      this.pictureBox1.Location = new System.Drawing.Point(8, 48);
      this.pictureBox1.Name = "pictureBox1";
      this.pictureBox1.Size = new System.Drawing.Size(280, 208);
      this.pictureBox1.TabIndex = 2;
      this.pictureBox1.TabStop = false;

      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 272);
      this.Controls.Add(this.pictureBox1);
      this.Controls.Add(this.textBox1);
      this.Controls.Add(this.button1);
      this.Name = "Form1";
      this.Text = "Display Images";
      this.ResumeLayout(false);
   }

   static void Main() {
      Application.Run(new Form1());
   }

   private void button1_Click(object sender, System.EventArgs e) {
      if (images.GetRow()) {
         this.textBox1.Text = images.GetFilename();
         this.pictureBox1.Image = (Image)images.GetImage();
      } else {
         this.textBox1.Text = "DONE";
         this.pictureBox1.Image = null;
      }
   }
}


public class Images{
   string imageFilename = null;
   byte[] imageBytes = null;

   SqlConnection imageConnection = null;
   SqlCommand imageCommand = null;
   SqlDataReader imageReader = null;

   public Images() {
      imageConnection = new SqlConnection("server=(local)SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI");
      imageCommand = new SqlCommand(@"select imagefile, imagedata from imagetable", imageConnection);

      imageConnection.Open();
      imageReader = imageCommand.ExecuteReader();
   }

   public Bitmap GetImage() {
      MemoryStream ms = new MemoryStream(imageBytes);
      Bitmap bmap = new Bitmap(ms);

      return bmap;
   }

   public string GetFilename() {
      return imageFilename;
   }

   public bool GetRow() {
      if (imageReader.Read()) {
        imageFilename = (string) imageReader.GetValue(0);
        imageBytes = (byte[]) imageReader.GetValue(1);
        return true;
      }else {
        return false;
      }
   }

   public void EndImages() {
      imageReader.Close();
      imageConnection.Close();
   }
}




           
          

   


/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.Data;
using System.Data.SqlClient;

namespace Client.Chapter_13___ADO.NET
{
    public class InsertingDataUsingCommandBuilder
    {
        static void Main(string[] args)
        {
            SqlConnection MyConnection = new SqlConnection(@"Data Source=(local); Initial Catalog = CaseManager; Integrated Security=true");
            SqlDataAdapter MyDataAdapter = new SqlDataAdapter("SELECT ID, Contact, Email FROM Test", MyConnection);
            SqlCommandBuilder MyCmd = new SqlCommandBuilder(MyDataAdapter);
            DataSet MyDataSet = new DataSet();

            MyDataAdapter.Fill(MyDataSet);

            DataRow MyRow = MyDataSet.Tables[0].NewRow();

            MyRow["ID"] = 200;
            MyRow["Contact"] = "Greg";
            MyRow["Email"] = "MacBeth";
            MyDataSet.Tables[0].Rows.Add(MyRow);
            MyDataAdapter.Update(MyDataSet);
        }
    }
}