Enable Disable Windows Form Buttons based on Login User using C# and VB.Net

Hi smile,

Check this example. Now please take its reference and correct your code.

Form Design

There are two form Form1 and Form2.

Form1 contains Two TextBox and a Button for Login.

Form2 contains five Button and for all Buttons Enabled property has been set to False.

Code

C#

Form1

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Login_Click(object sender, EventArgs e)
    {
        string userName = txtUserName.Text.Trim();
        string password = txtPassword.Text.Trim();
        // Write your code logic.
        this.Hide();
        // Sending User name to form2.
        Form2 form2 = new Form2(userName);
        form2.Show();
    }
}

Form2

public partial class Form2 : Form
{
    private string UserName { get; set; }
    public Form2()
    {
        InitializeComponent();
    }

    public Form2(string name)
    {
        this.UserName = name;
        InitializeComponent();
    }

    private void Form2_Load(object sender, EventArgs e)
    {
        btnBack.Enabled = true;
        switch (UserName.ToLower())
        {
            case "a":
                btnAdd.Enabled = true;
                break;
            case "b":
                btnUpdate.Enabled = true;
                btnExport.Enabled = true;
                break;
            case "c":
                btnDelete.Enabled = true;
                break;
            default:
                break;
        }
    }

    private void Back_Click(object sender, EventArgs e)
    {
        this.Hide();
        Form1 login = new Form1();
        login.Show();
    }
}

VB.Net

Form1

Private Sub Login_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnlogin.Click
    Dim userName As String = txtUserName.Text.Trim()
    Dim password As String = txtPassword.Text.Trim()
    ' Write your code logic.
    Me.Hide()
    ' Sending User name to form2.
    Dim form2 As Form2 = New Form2(userName)
    form2.Show()
End Sub

Form2

Private Property UserName As String
Public Sub New()
    InitializeComponent()
End Sub

Public Sub New(ByVal name As String)
    Me.UserName = name
    InitializeComponent()
End Sub

Private Sub Form2_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    btnBack.Enabled = True

    Select Case UserName.ToLower()
        Case "a"
            btnAdd.Enabled = True
        Case "b"
            btnUpdate.Enabled = True
            btnExport.Enabled = True
        Case "c"
            btnDelete.Enabled = True
        Case Else
    End Select
End Sub

Private Sub Back_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnBack.Click
    Me.Hide()
    Dim login As Form1 = New Form1()
    login.Show()
End Sub

Screenshot