Searching Data Using a TextBox in VB.Net and SQL Server 2018

Submitted by janobe on Monday, October 21, 2019 - 21:37.

In this tutorial, I will teach you how to search data using a text box in VB.Net and SQL Server database. This program has the ability to find the data in the datagridview when the text in a textbox is changed. In this way, it will automatically display in the datagridview, the match data that you type in the textbox.

Creating Database

1. Install the MSSMS 2018 on your machine. 2. Open the MSSMS 2018 . After that, right click the database, the select “New Database” and name it “dbperson”

3. Do the following query to create a table in the database that you have created

 
USE [dbperson]
GO
 
SET ANSI_NULLS ON
GO
 
SET QUOTED_IDENTIFIER ON
GO
 
CREATE TABLE [dbo].[tblperson](
	[PersonID] [INT] IDENTITY(1,1) NOT NULL,
	[Fname] [nvarchar](50) NULL,
	[Lname] [nvarchar](50) NULL
) ON [PRIMARY]
GO

Creating Application

Step 1

Open Microsoft Visual Studio 2015 and create a new windows form application for visual basic. ps1

Step 2

Add a Textboxess, and a DataGridview inside the Form. Then do the Form just like shown below.

Step 3

Press F7 to open the code editor. In the code editor, add a namespace to access SQL Server libraries.

 
Imports System.Data.SqlClient

Step 4

Create a connection between Visual Basic 2015 and SQL Server database. After that, declare and initialize all the classes and variables that are needed.

 
    Dim con As SqlConnection = New SqlConnection("Data Source=.\SQLEXPRESS;Database=dbperson;trusted_connection=true;")
    Dim cmd As SqlCommand
    Dim da As SqlDataAdapter
    Dim dt As DataTable
    Dim sql As String

Step 5

Create a method for searching the data in the database.

 
    Private Sub searchData(sql As String, dtg As DataGridView)
        Try
            con.Open()
            cmd = New SqlCommand()
            da = New SqlDataAdapter
            dt = New DataTable
 
            With cmd
                .Connection = con
                .CommandText = sql
            End With
            With da
                .SelectCommand = cmd
                .Fill(dt)
            End With
            dtg.DataSource = dt
 
        Catch ex As Exception
            MsgBox(ex.Message)
        Finally
            con.Close()
            da.Dispose()
        End Try
    End Sub

Step 6

Go back to the design view, double click the textbox to open the textchange event handler on it. After that, add this code inside the “TextBox1_TextChanged” event to find the data in the database.

 
    Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged
        sql = "SELECT * FROM tblperson WHERE Fname LIKE '%" & TextBox1.Text & "%' OR Lname LIKE '%" & TextBox1.Text & "%'"
        searchData(sql, DataGridView1)
    End Sub

Step 7

Write the following codes for retrieving data in the database in the first load of the form.

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        sql = "SELECT * FROM tblperson"
        searchData(sql, DataGridView1)
    End Sub

Output

The complete source code is included. You can download it and run it on your computer. For any questions about this article. You can contact me @ Email – [email protected] Mobile No. – 09305235027 – TNT Or feel free to comment below.

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