public partial class Form1 : Form
{
protected SqlConnection mcnSample;
private int mintTotalRecords = 0;
private int mintPageSize = 0;
private int mintPageCount = 0;
private int mintCurrentPage = 1;
DataSet ds = new DataSet();
protected const string CONNECTION_STRING = @"Data Source=ASHOK-PC\SQLEXPRESS;Initial Catalog=Demo4;Persist Security Info=True;User ID=ashok;Password=1234";
public Form1()
{
InitializeComponent();
}
private void fillGrid()
{
this.mintPageSize = int.Parse(this.tbPageSize.Text == "" ? "5" : this.tbPageSize.Text);
this.mintTotalRecords = ds.Tables[0].Rows.Count;
this.mintPageCount = this.mintTotalRecords / this.mintPageSize;
if (this.mintTotalRecords % this.mintPageSize > 0)
this.mintPageCount++;
this.mintCurrentPage = 0;
loadPage();
}
private void loadPage()
{
string strSql = "";
int intSkip = 0;
intSkip = (this.mintCurrentPage * this.mintPageSize);
if (ds.Tables.Count < 1)
{
strSql = "SELECT " +
" PK_ID,Name,City,Qualification,Category FROM Product";
SqlCommand cmd = this.mcnSample.CreateCommand();
cmd.CommandText = strSql;
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds, "Product");
cmd.Dispose();
da.Dispose();
}
mintPageSize = mintPageSize == 0 ? 5 : mintPageSize;
var a = ds.Tables[0].AsEnumerable().Skip(mintPageSize * mintCurrentPage).Take(mintPageSize);
this.dataGridView1.DataSource = a.CopyToDataTable();
this.lblStatus.Text = (this.mintCurrentPage + 1).ToString() +
" / " + this.mintPageCount.ToString();
}
private void goFirst()
{
this.mintCurrentPage = 0;
loadPage();
}
private void goPrevious()
{
if (this.mintCurrentPage == this.mintPageCount)
this.mintCurrentPage = this.mintPageCount - 1;
this.mintCurrentPage--;
if (this.mintCurrentPage < 1)
this.mintCurrentPage = 0;
loadPage();
}
private void goNext()
{
this.mintCurrentPage++;
if (this.mintCurrentPage > (this.mintPageCount - 1))
this.mintCurrentPage = this.mintPageCount - 1;
loadPage();
}
private void goLast()
{
this.mintCurrentPage = this.mintPageCount - 1;
loadPage();
}
private void btnPreviois_Click(object sender, EventArgs e)
{
this.goPrevious();
}
private void btnfirst_Click(object sender, EventArgs e)
{
this.goFirst();
}
private void btnnext_Click(object sender, EventArgs e)
{
this.goNext();
}
private void btnlast_Click(object sender, EventArgs e)
{
this.goLast();
}
private void Form1_Load(object sender, EventArgs e)
{
this.Show();
this.openConnection();
tbPageSize.Text = "5";
loadPage();
fillGrid();
}
private void openConnection()
{
try
{
this.mcnSample = new SqlConnection(CONNECTION_STRING);
this.mcnSample.Open();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void closeConnection()
{
try
{
if (this.mcnSample.State == ConnectionState.Open)
this.mcnSample.Close();
this.mcnSample.Dispose();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void tbPageSize_KeyUp(object sender, KeyEventArgs e)
{
this.fillGrid();
}
{
protected SqlConnection mcnSample;
private int mintTotalRecords = 0;
private int mintPageSize = 0;
private int mintPageCount = 0;
private int mintCurrentPage = 1;
DataSet ds = new DataSet();
protected const string CONNECTION_STRING = @"Data Source=ASHOK-PC\SQLEXPRESS;Initial Catalog=Demo4;Persist Security Info=True;User ID=ashok;Password=1234";
public Form1()
{
InitializeComponent();
}
private void fillGrid()
{
this.mintPageSize = int.Parse(this.tbPageSize.Text == "" ? "5" : this.tbPageSize.Text);
this.mintTotalRecords = ds.Tables[0].Rows.Count;
this.mintPageCount = this.mintTotalRecords / this.mintPageSize;
if (this.mintTotalRecords % this.mintPageSize > 0)
this.mintPageCount++;
this.mintCurrentPage = 0;
loadPage();
}
private void loadPage()
{
string strSql = "";
int intSkip = 0;
intSkip = (this.mintCurrentPage * this.mintPageSize);
if (ds.Tables.Count < 1)
{
strSql = "SELECT " +
" PK_ID,Name,City,Qualification,Category FROM Product";
SqlCommand cmd = this.mcnSample.CreateCommand();
cmd.CommandText = strSql;
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds, "Product");
cmd.Dispose();
da.Dispose();
}
mintPageSize = mintPageSize == 0 ? 5 : mintPageSize;
var a = ds.Tables[0].AsEnumerable().Skip(mintPageSize * mintCurrentPage).Take(mintPageSize);
this.dataGridView1.DataSource = a.CopyToDataTable();
this.lblStatus.Text = (this.mintCurrentPage + 1).ToString() +
" / " + this.mintPageCount.ToString();
}
private void goFirst()
{
this.mintCurrentPage = 0;
loadPage();
}
private void goPrevious()
{
if (this.mintCurrentPage == this.mintPageCount)
this.mintCurrentPage = this.mintPageCount - 1;
this.mintCurrentPage--;
if (this.mintCurrentPage < 1)
this.mintCurrentPage = 0;
loadPage();
}
private void goNext()
{
this.mintCurrentPage++;
if (this.mintCurrentPage > (this.mintPageCount - 1))
this.mintCurrentPage = this.mintPageCount - 1;
loadPage();
}
private void goLast()
{
this.mintCurrentPage = this.mintPageCount - 1;
loadPage();
}
private void btnPreviois_Click(object sender, EventArgs e)
{
this.goPrevious();
}
private void btnfirst_Click(object sender, EventArgs e)
{
this.goFirst();
}
private void btnnext_Click(object sender, EventArgs e)
{
this.goNext();
}
private void btnlast_Click(object sender, EventArgs e)
{
this.goLast();
}
private void Form1_Load(object sender, EventArgs e)
{
this.Show();
this.openConnection();
tbPageSize.Text = "5";
loadPage();
fillGrid();
}
private void openConnection()
{
try
{
this.mcnSample = new SqlConnection(CONNECTION_STRING);
this.mcnSample.Open();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void closeConnection()
{
try
{
if (this.mcnSample.State == ConnectionState.Open)
this.mcnSample.Close();
this.mcnSample.Dispose();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void tbPageSize_KeyUp(object sender, KeyEventArgs e)
{
this.fillGrid();
}
