How to Auto Search Data From Database in C# .Net

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 ClientManagementApp
{
   public partial class SearchClient : Form
   {
      DataSet dstResults = new DataSet();
      DataView myView;
      public SearchClient()
      {
         InitializeComponent();
      }
      public static OleDbConnection conection()
      {
         OleDbConnection con = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=ClientMgmtDb.accdb;");
         if (con.State == ConnectionState.Closed)
         con.Open();
         return con;
      }
      private void txtSearch_KeyUp(object sender, KeyEventArgs e)
      {
         string outputInfo = "";
         string[] keyWords = txtSearch.Text.Split(' ');
         foreach (string word in keyWords)
         {
            if (outputInfo.Length == 0)
            {
               outputInfo = "(BankName LIKE '%" + word + "%' OR ContactPersonName LIKE '%" +
word + "%' OR ContactNumber LIKE '%" + word + "%')";
            }
            else
            {
               outputInfo += " AND (BankName LIKE '%" + word + "%' OR ContactPersonName LIKE '%" +
word + "%' OR ContactNumber LIKE '%" + word + "%')";
            }
         }
         myView.RowFilter = outputInfo;
      }
      private void SearchClient_Load(object sender, EventArgs e)
      {
         ////OleDbConnection con = conection();
         ////OleDbCommand cmd;
         //////DataSet ds=new DataSet();
         ////DataTable ds = new DataTable();
         ////string str = "select * from tbl_ClientDetails";
         ////cmd = new OleDbCommand(str, con);
         ////OleDbDataAdapter da = new OleDbDataAdapter(cmd);
         //////da.Fill(ds, "default");
         ////da.Fill(ds);
         ////dataGridView1.DataSource = ds;
         ////con.Close();
         ReadData("SELECT * FROM tbl_ClientDetails",
         ref dstResults, "BankName");
         myView = ((DataTable)dstResults.Tables["BankName"]).DefaultView;
         dataGridView1.DataSource = myView;
      }
      public void ReadData(string strSQL, ref DataSet dstMain, string strTableName = "default")
      {
         try
         {
            string connectionString = @" Provider=Microsoft.ACE.OLEDB.12.0;Data Source=ClientMgmtDb.accdb;";
            // OleDbConnection cnn = conection();
            OleDbConnection cnn = new OleDbConnection(connectionString);
            OleDbCommand cmd = new OleDbCommand(strSQL, cnn);
            cnn.Open();
            OleDbDataAdapter da = new OleDbDataAdapter(cmd);
            da.Fill(dstMain, strTableName);
            da.Dispose();
            cnn.Close();
         }
         catch (Exception ex)
         {
            Console.WriteLine(ex.ToString());
         }
      }
      private void txtSearch_TextChanged(object sender, EventArgs e)
      {
         txtSearch.BackColor = System.Drawing.Color.Yellow;
      }
      private void dt_PaymentRecvdDate_KeyUp(object sender, KeyEventArgs e)
      {
         string outputInfo = "";
         string[] keyWords = dt_PaymentRecvdDate.Text.Split(' ');
         foreach (string word in keyWords)
         {
            if (outputInfo.Length == 0)
            {
               outputInfo = "(PayementRecievedDate LIKE '%" + word + "%' OR ContactPersonName LIKE '%" +
word + "%' OR InstalledDate LIKE '%" + word + "%')";
            }
            else
            {
               outputInfo += " AND (PayementRecievedDate LIKE '%" + word + "%' OR ContactPersonName LIKE '%" +
word + "%' OR InstalledDate LIKE '%" + word + "%')";
            }
         }
         myView.RowFilter = outputInfo;
      }
   }
}