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Searching Record in DataGridView in ADO.NET


Introduction

In this article I am displaying a record from a database table in a DataGridView and searching the records in a DataGridView. At first we should have a database with some records. In this example my Database name is "student" and Database table name is "student_detail" which has some records. I will bind these records with DataGridView and perform a different operation.

  • Take a Windows Forms Application.
  • Take some UI controls and arrange them like in the following figure.

Write the following code:

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 searchingrecord
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        SqlDataAdapter dadapter;
        DataSet dsset;
        CurrencyManager cmgr;
        DataRowView drv;
       
        string connatring = "server=.;database=student;user=sa;password=wintellect";
 
        private void Form1_Load(object sender, EventArgs e)
        {
            dadapter = new SqlDataAdapter("select * from student_detail", connatring);
            dsset = new DataSet();
            dadapter.Fill(dsset);
            dataGridView1.DataSource = dsset.Tables[0];
            cmgr = (CurrencyManager)dataGridView1.BindingContext[dsset.Tables[0]];
        }
       private void btnfirst_Click(object sender, EventArgs e)
        {
            cmgr.Position = 0;
            drv = (DataRowView)cmgr.Current;
            txtrollno.Text = drv.Row[0].ToString();
            txtname.Text = drv.Row[1].ToString();
            txtcity.Text = drv.Row[2].ToString();
        }
       private void btnnext_Click(object sender, EventArgs e)
        {
            if (cmgr.Position != cmgr.Count)
            {
                cmgr.Position += 1;          
                drv = (DataRowView)cmgr.Current;
                txtrollno.Text = drv.Row[0].ToString();
                txtname.Text = drv.Row[1].ToString();
                txtcity.Text = drv.Row[2].ToString();
            }                        
        }
       private void btnprevious_Click(object sender, EventArgs e)
        {
            if (cmgr.Position != 0)
            {
                cmgr.Position -= 1;
                drv = (DataRowView)cmgr.Current;
                txtrollno.Text = drv.Row[0].ToString();
                txtname.Text = drv.Row[1].ToString();
                txtcity.Text = drv.Row[2].ToString();
            }
        }
       private void btnlast_Click(object sender, EventArgs e)
        {
            cmgr.Position = cmgr.Count;
            drv = (DataRowView)cmgr.Current;
            txtrollno.Text = drv.Row[0].ToString();
            txtname.Text = drv.Row[1].ToString();
            txtcity.Text = drv.Row[2].ToString();
        }
      private void btnsearch_Click(object sender, EventArgs e)
       {
           try
           {
               DataView dview = new DataView(dsset.Tables[0]);
               dview.Sort = "rollno";
               int i = dview.Find(txtrollnosearch.Text);
               if (i < 0)
               {
                   MessageBox.Show("No Recods Found");
               }
               else
               {
                   cmgr.Position = i;
                   drv = (DataRowView)cmgr.Current;
                   txtrollno.Text = drv.Row[0].ToString();
                   txtname.Text = drv.Row[1].ToString();
                   txtcity.Text = drv.Row[2].ToString();
               }
           }
           catch (Exception)
           {
               MessageBox.Show("Incorrect Input..");
               txtrollnosearch.Clear();
               txtrollnosearch.Focus();
           }
       }
    }
}
 
Run the application.

Output


 
I am giving a short descriptive image of the output window below.

Click the ">" button. The selected row will be moved to the next row in the DataGridView as well as the record will be displayed in the TextBoxes.


Similarly, click other buttons (such as First, Last or Previous) to move to another record. You can search for a record on the basis of the roll number of the student. For example I found a record for the student whose "rollno" is 122.


Click the "Search" button. It will select the appropriate row in DataGridView as will as show record in TextBox.

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