using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;

    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.DataGrid dataGrid1;
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            InitializeComponent();
        }

        private void InitializeComponent(){
         this.dataGrid1 = new System.Windows.Forms.DataGrid();
         ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
         this.SuspendLayout();
         this.dataGrid1.DataMember = "";
         this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
         this.dataGrid1.Location = new System.Drawing.Point(8, 8);
         this.dataGrid1.Name = "dataGrid1";
         this.dataGrid1.Size = new System.Drawing.Size(608, 256);
         this.dataGrid1.TabIndex = 0;
         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
         this.ClientSize = new System.Drawing.Size(624, 272);
         this.Controls.Add(this.dataGrid1);
         this.Name = "Form1";
         this.Text = "Form1";
         this.Load += new System.EventHandler(this.Form1_Load);
         ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
         this.ResumeLayout(false);

      }

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

      private void Form1_Load(object sender, System.EventArgs e){
         string connString = "server=(local)SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI";

         string sql = @"select * from employee";

         SqlConnection conn = new SqlConnection(connString);
         SqlDataAdapter da = new SqlDataAdapter(sql, conn);
         DataSet ds = new DataSet();
         da.Fill(ds, "customers");

         // Bind the data table to the data grid
         dataGrid1.SetDataBinding(ds, "customers");
      }
    }



           
          

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

class Class1{
static void Main(string[] args){
DataSet myDataSet = GetData();
foreach (DataColumn c in myDataSet.Tables[“TheData”].Columns){
Console.Write(“{0,-20}”,c.ColumnName);
}
Console.WriteLine();

foreach (DataRow r in myDataSet.Tables[“TheData”].Rows)
{
foreach (DataColumn c in myDataSet.Tables[“TheData”].Columns)
{
Console.Write(“{0,-20}”,r);
}
Console.WriteLine();
}
}

private static DataSet GetData(){
string strLine;
string[] strArray;
char[] charArray = new char[] {','};
DataSet ds = new DataSet();
DataTable dt = ds.Tables.Add(“TheData”);
FileStream aFile = new FileStream(“csv.txt”,FileMode.Open);
StreamReader sr = new StreamReader(aFile);

strLine = sr.ReadLine();

strArray = strLine.Split(charArray);

for(int x=0;x<=strArray.GetUpperBound(0);x++) { dt.Columns.Add(strArray[x].Trim()); } strLine = sr.ReadLine(); while(strLine != null) { strArray = strLine.Split(charArray); DataRow dr = dt.NewRow(); for(int i=0;i<=strArray.GetUpperBound(0);i++) { dr[i] = strArray[i].Trim(); } dt.Rows.Add(dr); strLine = sr.ReadLine(); } sr.Close(); return ds; } } // File: csv.txt /* 1,2,3,4 5,6,7,8 */ [/csharp]

//This example code is from eran.rivlis at gmail.com

DataTable dt = new DataTable();

private void Form1_Load(object sender, EventArgs e)
{
string conString = @”Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:csv” +
@”;Extended Properties=””Text;HDR=No;FMT=Delimited”””;
OleDbConnection conn = new OleDbConnection(conString);
OleDbDataAdapter da = new OleDbDataAdapter(@”Select * from table1.csv”, conn);
da.Fill(dt);
dataGridView1.DataSource = dt;
}

private void button1_Click(object sender, EventArgs e)
{
StringBuilder sbCSV = new StringBuilder();
int intColCount = dt.Columns.Count;
foreach (DataRowView dr in dt.DefaultView)
{
for (int x = 0; x < intColCount; x++) { sbCSV.Append(dr[x].ToString()); if ((x + 1) != intColCount) { sbCSV.Append(","); } } sbCSV.Append(" "); } using (StreamWriter sw = new StreamWriter(@"c:csv able1.csv")) { sw.Write(sbCSV.ToString()); } } [/csharp]

   

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

   class CommandExampleCreateDb
   {
      static void Main() 
      {
         SqlConnection thisConnection = new SqlConnection("server=(local)SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI");
         SqlCommand nonqueryCommand = thisConnection.CreateCommand();

         try 
         {
            thisConnection.Open();

            nonqueryCommand.CommandText = "CREATE DATABASE MyDb";
            Console.WriteLine(nonqueryCommand.CommandText);

            nonqueryCommand.ExecuteNonQuery();
            Console.WriteLine("Database created, now switching");
            thisConnection.ChangeDatabase("MyDb");

            nonqueryCommand.CommandText = "CREATE TABLE MyJava2sTable (COL1 integer)";
            Console.WriteLine(nonqueryCommand.CommandText);
            Console.WriteLine("Number of Rows Affected is: {0}", nonqueryCommand.ExecuteNonQuery());

            nonqueryCommand.CommandText = "INSERT INTO MyJava2sTable VALUES (99)";
            Console.WriteLine(nonqueryCommand.CommandText);
            Console.WriteLine("Number of Rows Affected is: {0}", nonqueryCommand.ExecuteNonQuery());
         
         } catch (SqlException ex) {
         
            Console.WriteLine(ex.ToString());
         
         } finally {  
         
            thisConnection.Close();
            Console.WriteLine("Connection Closed.");
         
         }
      }
   }



           
          

   
 

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

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

        SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
        mySqlCommand.CommandText =
          "CREATE TABLE MyPersons (" +
          "  PersonID int CONSTRAINT PK_Persons PRIMARY KEY," +
          "  FirstName nvarchar(15) NOT NULL," +
          "  LastName nvarchar(15) NOT NULL," +
          "  DateOfBirth datetime" +
          ")";

        mySqlConnection.Open();
        Console.WriteLine("Creating MyPersons table");
        int result = mySqlCommand.ExecuteNonQuery();
        Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
        mySqlCommand.CommandText =
          "ALTER TABLE MyPersons " +
          "ADD EmployerID nchar(5) CONSTRAINT FK_Persons_Customers " +
          "REFERENCES Customers(CustomerID)";

        result = mySqlCommand.ExecuteNonQuery();
        Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
        mySqlCommand.CommandText = "DROP TABLE MyPersons";
        result = mySqlCommand.ExecuteNonQuery();
        Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
        mySqlConnection.Close();
    }
}

    

   


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

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

    SqlCommand mySqlCommand = mySqlConnection.CreateCommand();

    mySqlCommand.CommandText =
      "CREATE TABLE MyEmployee (" +
      "  ID int CONSTRAINT PK_Persons PRIMARY KEY," +
      "  FirstName nvarchar(15) NOT NULL," +
      "  LastName nvarchar(15) NOT NULL," +
      "  DateOfBirth datetime" +
      ")";

    mySqlConnection.Open();

    Console.WriteLine("Creating MyEmployee table");
    int result = mySqlCommand.ExecuteNonQuery();
    Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);

    mySqlCommand.CommandText =
      "ALTER TABLE MyEmployee " +
      "ADD EmployerID nchar(5) CONSTRAINT FK_Persons_Customers " +
      "REFERENCES Employee(ID)";

    Console.WriteLine("Altering MyEmployee table");
    result = mySqlCommand.ExecuteNonQuery();
    Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);

    mySqlCommand.CommandText = "DROP TABLE MyEmployee";

    Console.WriteLine("Dropping MyEmployee table");
    result = mySqlCommand.ExecuteNonQuery();
    Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);

    mySqlConnection.Close();
  }
}


           
          

   


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

   class CommandExampleCreateDb
   {
      static void Main() 
      {
         SqlConnection thisConnection = new SqlConnection("server=(local)SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI");
         SqlCommand nonqueryCommand = thisConnection.CreateCommand();

         try 
         {
            thisConnection.Open();

            nonqueryCommand.CommandText = "CREATE DATABASE MyDb";
            Console.WriteLine(nonqueryCommand.CommandText);

            nonqueryCommand.ExecuteNonQuery();
            Console.WriteLine("Database created, now switching");
            thisConnection.ChangeDatabase("MyDb");

            nonqueryCommand.CommandText = "CREATE TABLE MyJava2sTable (COL1 integer)";
            Console.WriteLine(nonqueryCommand.CommandText);
            Console.WriteLine("Number of Rows Affected is: {0}", nonqueryCommand.ExecuteNonQuery());

            nonqueryCommand.CommandText = "INSERT INTO MyJava2sTable VALUES (99)";
            Console.WriteLine(nonqueryCommand.CommandText);
            Console.WriteLine("Number of Rows Affected is: {0}", nonqueryCommand.ExecuteNonQuery());
         
         } catch (SqlException ex) {
         
            Console.WriteLine(ex.ToString());
         
         } finally {  
         
            thisConnection.Close();
            Console.WriteLine("Connection Closed.");
         
         }
      }
   }