Query Problem

Good day Everyone..

Table:Preventive

ID         Site          Category         Facility Activity                                                  Recurrence       DuePattern  Start_Record
1         Langkawi         NULL          FIRE ALARM Sample of Breakglass Test               Monthly          26                 NULL

Table: PreventiveRecord
ID                Date_Done                Date_Due                SME        Status        History_ID        Remark
Null                Null                                null                        null        null                null                null


History_ID same with ID

Output must be in PreventiveRecord like as per below:

ID         Date_Done         Date_Due         SME         Status         History_ID         Remark
Null         Null                      26/1/2011                null         null                    1                 null          
Null         Null                      27/2/2011                     null        null                1                 null
and so on...

26th -due pattern
monthly basis..




my problem :

I am tring to get data from a sqlserver database and auto generate the next due date.. but i dont noe the correct way to auto generate the due date in the Date_Due column.. please advice.. i searched google but couldn't find any example.. :-( i've submit by tomorrow :-(...


------------------------------------------------------------------------------
private void Button2_Click(object sender, EventArgs e)
{
try
{

SqlConn.Open();
SqlComm.Connection = SqlConn;
SqlComm.CommandText = "SELECT * FROM preventiveRecord * WHERE [History_ID =''] AND [YEAR (Date_Due)] ='2011' ORDER BY Date_Due";





SqlDataReader reader = SqlComm.ExecuteReader();

while (reader.Read())

{
string id;
string date;
string due;
string sme;
string history;
string remarks;




id = reader["ID"].ToString();
date = reader["Date_Done"] .ToString();
due = reader["Date_Due"].ToString();
sme = reader["SME"].ToString();
history = reader["History_ID"].ToString();
remarks = reader["Remarks"].ToString();


}
SqlConn.Close();



}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
//Console.WriteLine(ex.ToString());
}

}




}
}

-----------------------------------------------------------------------------
Here is d full coding :

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



namespace PreventiveUpdater
{


public partial class Form1 : Form
{

SqlConnection SqlConn = new SqlConnection("Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=system;Data Source=LAPTOP-SUJITA\\SQLEXPRESS");
SqlCommand SqlComm = new SqlCommand();

public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void button1_Click(object sender, EventArgs e)
{
try
{
SqlConn.Open();
SqlComm.Connection = SqlConn;
SqlComm.CommandText = "SELECT * FROM preventive";

SqlDataReader reader = SqlComm.ExecuteReader();

while (reader.Read())
{
string id;
id = reader["ID"].ToString();
}

//dataGridView1.DataSource = reader;
//dataGridView1

//SqlDataAdapter dataAdapter = new SqlDataAdapter(SqlComm);

//SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter);

//BindingSource dbBindSource = new BindingSource();



//// Populate a new data table and bind it to the BindingSource.

//DataTable table = new DataTable();

//table.Locale = System.Globalization.CultureInfo.InvariantCulture;

//dataAdapter.Fill(table);

//dbBindSource.DataSource = table;



//// Resize the DataGridView columns to fit the newly loaded content.

//dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCellsExceptHeader);

//// you can make it grid readonly.

//dataGridView1.ReadOnly = true;

//// finally bind the data to the grid

//dataGridView1.DataSource = dbBindSource;


SqlConn.Close();



}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
//Console.WriteLine(ex.ToString());
}
}

private void Button2_Click(object sender, EventArgs e)
{
try
{

SqlConn.Open();
SqlComm.Connection = SqlConn;
SqlComm.CommandText = "SELECT * FROM preventiveRecord * WHERE [History_ID =''] AND [YEAR (Date_Due)] ='2011' ORDER BY Date_Due";





SqlDataReader reader = SqlComm.ExecuteReader();

while (reader.Read())

{
string id;
string date;
string due;
string sme;
string history;
string remarks;




id = reader["ID"].ToString();
date = reader["Date_Done"] .ToString();
due = reader["Date_Due"].ToString();
sme = reader["SME"].ToString();
history = reader["History_ID"].ToString();
remarks = reader["Remarks"].ToString();






}
SqlConn.Close();



}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
//Console.WriteLine(ex.ToString());
}

}




}
}