Private Function ValidateInputs() As Boolean If String.IsNullOrWhiteSpace(txtFirstName.Text) Then MessageBox.Show("First Name is required") Return False End If
If String.IsNullOrWhiteSpace(txtLastName.Text) Then MessageBox.Show("Last Name is required") Return False End If vb.net access database example
Private Sub ClearInputs() txtFirstName.Clear() txtLastName.Clear() txtEmail.Clear() txtAge.Clear() txtFirstName.Focus() End Sub Private Sub dgvUsers_CellClick(sender As Object, e As DataGridViewCellEventArgs) Handles dgvUsers.CellClick If e.RowIndex >= 0 Then Dim row As DataGridViewRow = dgvUsers.Rows(e.RowIndex) txtFirstName.Text = row.Cells("FirstName").Value.ToString() txtLastName.Text = row.Cells("LastName").Value.ToString() txtEmail.Text = row.Cells("Email").Value.ToString() txtAge.Text = row.Cells("Age").Value.ToString() End If End Sub Here's the complete form code: Private Function ValidateInputs() As Boolean If String
Using conn As New OleDbConnection(connectionString) Using cmd As New OleDbCommand(query, conn) ' Add parameters to prevent SQL injection cmd.Parameters.AddWithValue("@FirstName", txtFirstName.Text) cmd.Parameters.AddWithValue("@LastName", txtLastName.Text) cmd.Parameters.AddWithValue("@Email", txtEmail.Text) cmd.Parameters.AddWithValue("@Age", Convert.ToInt32(txtAge.Text)) conn.Open() cmd.ExecuteNonQuery() conn.Close() End Using End Using Data Source=C:\VB.NET Projects\Demo\SampleDB.accdb"
Imports System.Data.OleDb Public Class Form1 Dim connectionString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\VB.NET Projects\Demo\SampleDB.accdb"