Create a DataView from DataTable

You can also use the DataTable's DefaultView property:

http://msdn.microsoft.com/en-us/library/system.data.datatable.defaultview(VS.100).aspx

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 DataView_RowFilter
{
    public partial class Form1 : Form
    {
        string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"];
        OleDbCommand com;
        OleDbDataAdapter oledbda;
        DataSet ds;
       
        string str;
        public Form1()
        {
            InitializeComponent();
        }

        private void btndisplayall_Click(object sender, EventArgs e)
        {
            OleDbConnection con = new OleDbConnection(ConnectionString);
            con.Open();
            str = "select * from student";
            com = new OleDbCommand(str, con);
            oledbda = new OleDbDataAdapter(com);
            ds = new DataSet();
            oledbda.Fill(ds, "student");
            dataGridView1.DataSource = ds;
            dataGridView1.DataMember = "student";
            con.Close();
        }

        private void btndisplay_Click(object sender, EventArgs e)
        {
            DataTable dt;
            dt = ds.Tables["student"];
            DataView dv = new DataView(dt);
            dv.RowFilter = "sname='" + textBox1.Text + "'";
            dataGridView1.DataSource = dv;
        }
    }
}

you just need to create an object for dataview and pass datatable as parameter

DataView dv=new DataView(dt);

Here dt is my datatable.