Filtering a dataset using select method in Csharp

In this blog we will know how to Filter a dataset using select method in Csharp

App.xml file

<?xml version="1.0" encoding="utf-8" ?>

</appSettings>

</configuration>

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.OleDb;

namespace Filtering_a_dataset_using_select_method_Cs

{

public partial class Form1 : Form

{

string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"];

OleDbCommand com;

OleDbDataAdapter oledbda;

DataSet ds;

DataTable dt;

string str;

public Form1()

{

InitializeComponent();

}

private void btnfilterdata_Click(object sender, EventArgs e)

{

OleDbConnection con = new OleDbConnection(ConnectionString);

try

{

con.Open();

str = "select * from student";

com = new OleDbCommand(str, con);

oledbda = new OleDbDataAdapter(com);

ds = new DataSet();

oledbda.Fill(ds, "student");

dt = ds.Tables["student"];

string s1 = null;

string s2 = null;

s1 = "smarks>60";

s2 = "smarks asc";

DataRow[] result = null;

result = dt.Select(s1, s2);

int ctr = 0;

for (ctr = 0; ctr <= (result.Length - 1); ctr++)

{

ListBox1.Items.Add(result[ctr]["smarks"]);

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

con.Close();

}