Moving focus from one row to other in datagrid in VB.NET

In this article we will know how to move focus from one row to another row in a datagrid. Here we add one datagrid and five buttons controls respectively to the form. First in the Form1_Load event data will be loaded into the datagrid and with the help of four buttons we will navigate the focus from one row to another.

Imports System.Data

Imports System.Data.OleDb

Public Class Form1

    Dim ConnectionString As String = System.Configuration.ConfigurationSettings.AppSettings("dsn")

    Dim con As OleDbConnection = New OleDbConnection(ConnectionString)

    Dim com As OleDbCommand

    Dim oledbda As OleDbDataAdapter

    Dim ds As DataSet

    Dim dt As DataTable

    Dim str As String

 

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        Try

            con.Open()

            str = "select * from student"

            com = New OleDbCommand(str, con)

            oledbda = New OleDbDataAdapter(com)

            ds = New DataSet

            oledbda.Fill(ds, "student")

            con.Close()

            dt = ds.Tables("student")

            DataGrid1.ReadOnly = True

            DataGrid1.DataSource = ds

            DataGrid1.DataMember = "student"

            btnenadisi(True)

        Catch ex As Exception

            MsgBox(ex.Message)

        End Try

    End Sub

    Private Sub btnfirst_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnfirst.Click

        DataGrid1.UnSelect(DataGrid1.CurrentRowIndex)

        DataGrid1.CurrentRowIndex = 0

        DataGrid1.Select(DataGrid1.CurrentRowIndex)

        btnenadisi(True)

    End Sub

    Private Sub btnprev_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnprev.Click

        DataGrid1.UnSelect(DataGrid1.CurrentRowIndex)

        DataGrid1.CurrentRowIndex -= 1

        DataGrid1.Select(DataGrid1.CurrentRowIndex)

        btnenadisi(True)

    End Sub

    Private Sub btnnext_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnnext.Click

        DataGrid1.UnSelect(DataGrid1.CurrentRowIndex)

        DataGrid1.CurrentRowIndex += 1

        DataGrid1.Select(DataGrid1.CurrentRowIndex)

        btnenadisi(True)

    End Sub

    Private Sub btnlast_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnlast.Click

        DataGrid1.UnSelect(DataGrid1.CurrentRowIndex)

        DataGrid1.CurrentRowIndex = dt.Rows.Count - 1

        DataGrid1.Select(DataGrid1.CurrentRowIndex)

        btnenadisi(True)

    End Sub

    Private Sub btnenadisi(ByVal x As Boolean)

        btnfirst.Enabled = x

        btnprev.Enabled = x

        btnnext.Enabled = x

        btnlast.Enabled = x

        btnclose.Enabled = x

    End Sub

    Private Sub btnclose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnclose.Click

        Me.Close()

    End Sub

End Class

 

Output

Thanks for reading