using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using System.Configuration;
using System.Data.SqlClient;

public class Form1 : Form {
    public Form1() {
        InitializeComponent();
    }

    private void getData_Click(object sender, EventArgs e) {
        string orders = "SELECT * FROM Orders";
        string customers = "SELECT * FROM Customers";

        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["northwind"].ConnectionString)) {
            SqlDataAdapter da = new SqlDataAdapter(orders, con);
            DataSet ds = new DataSet();
            da.Fill(ds, "Orders");
            da = new SqlDataAdapter(customers, con);
            da.Fill(ds, "Customers");
            ds.Relations.Add("CustomerOrders",
                ds.Tables["Customers"].Columns["CustomerID"],
                ds.Tables["Orders"].Columns["CustomerID"]);
            DataViewManager dvm = new DataViewManager(ds);
            dvm.DataViewSettings["Customers"].RowFilter = "Country='UK'";
            dataGrid1.SetDataBinding(dvm, "Customers");
        }
    }
    private void InitializeComponent() {
        this.dataGrid1 = new System.Windows.Forms.DataGrid();
        this.getData = new System.Windows.Forms.Button();
        ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
        this.SuspendLayout();
        this.dataGrid1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                    | System.Windows.Forms.AnchorStyles.Left)
                    | System.Windows.Forms.AnchorStyles.Right)));
        this.dataGrid1.DataMember = "";
        this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
        this.dataGrid1.Location = new System.Drawing.Point(13, 13);
        this.dataGrid1.Size = new System.Drawing.Size(488, 374);
        this.getData.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
        this.getData.Location = new System.Drawing.Point(426, 393);
        this.getData.Size = new System.Drawing.Size(75, 23);
        this.getData.Text = "Get Data";
        this.getData.UseVisualStyleBackColor = true;
        this.getData.Click += new System.EventHandler(this.getData_Click);
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(513, 428);
        this.Controls.Add(this.getData);
        this.Controls.Add(this.dataGrid1);
        ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
        this.ResumeLayout(false);
    }
    private System.Windows.Forms.DataGrid dataGrid1;
    private System.Windows.Forms.Button getData;
    [STAThread]
    static void Main() {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
    }
}

           
          

   


   
using System;
using System.Data;
using System.Data.SqlClient;

class MultipleDataTables2 {
    public static void Main() {
        SqlConnection mySqlConnection = new SqlConnection("server=localhost;database=Northwind;uid=sa;pwd=sa");

        SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
        mySqlCommand.CommandText = "SELECT TOP 2 ProductID, ProductName, UnitPrice FROM Products ORDER BY ProductID";
        SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
        mySqlDataAdapter.SelectCommand = mySqlCommand;
        DataSet myDataSet = new DataSet();
        mySqlConnection.Open();
        int numberOfRows = mySqlDataAdapter.Fill(myDataSet, "Products");
        Console.WriteLine("numberOfRows = " + numberOfRows);

        mySqlDataAdapter.SelectCommand.CommandText = "SELECT CustomerID, CompanyName FROM Customers WHERE CustomerID = 'ALFKI'";
        numberOfRows = mySqlDataAdapter.Fill(myDataSet, "Customers");
        Console.WriteLine("numberOfRows = " + numberOfRows);

        mySqlConnection.Close();

        foreach (DataTable myDataTable in myDataSet.Tables) {
            Console.WriteLine("
Reading from the " + myDataTable.TableName + " DataTable");
            foreach (DataRow myDataRow in myDataTable.Rows) {
                foreach (DataColumn myDataColumn in
                  myDataTable.Columns) {
                    Console.WriteLine(myDataColumn + " = " + myDataRow[myDataColumn]);
                }
            }
        }
    }
}


           
          

   


using System;
using System.Data;
using System.Data.SqlClient;

class PopDataset
{
   static void Main()
   {
      string connString = "server=(local)SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI";
      string sql = @"select * from employee";
      SqlConnection conn = new SqlConnection(connString);

      try
      {
         conn.Open();
         SqlDataAdapter da = new SqlDataAdapter(sql, conn);
         DataSet ds = new DataSet();    
         da.Fill(ds, "employee");
         DataTable dt = ds.Tables["employee"];
         foreach (DataRow row in dt.Rows)
         {
            foreach (DataColumn col in dt.Columns)
               Console.WriteLine(row[col]);
            Console.WriteLine("".PadLeft(20, '='));
         }
      }
      catch(Exception e)
      {
         Console.WriteLine("Error: " + e);
      }
      finally
      {
         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;
using System.Data.OleDb;

namespace Client.Chapter_13___ADO.NET
{
    public class UsingMultiTabledDatasets
    {
        static void Main(string[] args)
        {
            OleDbConnection MyConnection = new OleDbConnection(@"Provider=Microsft.Jet.OLEDB.4.0; Data Source = c:MyAccessDB.mdb");
            OleDbDataAdapter MyAdapter = new OleDbDataAdapter("SELECT Column1, Column2, Column3 FROM MyTable", MyConnection);
            DataSet MyDataSet = new DataSet();

            MyAdapter.Fill(MyDataSet, "MyTable");
            foreach (DataTable MyTable in MyDataSet.Tables)
            {
                foreach (DataColumn MyColumn in MyTable.Columns)
                {
                    foreach (DataRow MyRow in MyTable.Rows)
                    {
                    }
                }
            }
        }
    }
}


           
          

   

/*
 * 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 UsingDatasets
    {
        static void Main(string[] args)
        {
            SqlConnection MyConnection = new SqlConnection(@"Data Source=(local); Initial Catalog = CaseManager; Integrated Security=true");
            SqlDataAdapter MyAdapter = new SqlDataAdapter("SELECT * FROM CaseInfo", MyConnection);
            DataSet MyDataSet = new DataSet();

            MyAdapter.Fill(MyDataSet, "MyTable");
            MyDataSet.WriteXml(@"c:MyDatSet.xml");
        }
    }
}



           
          

   

using System;
using System.Data;
using System.Data.SqlClient;

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

    SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
    mySqlCommand.CommandText =
      "SELECT TOP 5 ID, FirstName, LastName " +
      "FROM Employee " +
      "ORDER BY ID";
    SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
    mySqlDataAdapter.SelectCommand = mySqlCommand;
    DataSet myDataSet = new DataSet();
    mySqlConnection.Open();

    Console.WriteLine("Retrieving rows from the Employee table");
    int numberOfRows = mySqlDataAdapter.Fill(myDataSet, 1, 3, "Employee");
    Console.WriteLine("numberOfRows = " + numberOfRows);

    mySqlConnection.Close();

    DataTable myDataTable = myDataSet.Tables["Employee"];

    foreach (DataRow myDataRow in myDataTable.Rows)
    {
      Console.WriteLine("ID = " + myDataRow["ID"]);
      Console.WriteLine("FirstName = " + myDataRow["FirstName"]);
      Console.WriteLine("LastName = " + myDataRow["LastName"]);
    }
  }
}
           
          

using System;
using System.IO;
using System.Data;

public class MainClass {
static void Main(string[] args) {
if (args.Length != 1)
return;

FileStream fs = new FileStream(args[0], FileMode.Open);
DataSet ds = new DataSet();
ds.ReadXml(fs);

// Use a DataTable to display the members.
DataTable mt = ds.Tables[“member”];
for (int row = 0; row < mt.Rows.Count; row++) { for (int col = 0; col < mt.Columns.Count - 1; col++) { Console.WriteLine("{0,-10}{1}", mt.Columns[col].Caption, mt.Rows[row][col].ToString().Trim()); } Console.WriteLine(); } fs.Close(); } } [/csharp]