private void btnLogin_Click(object sender, EventArgs e) { if (ValidateInputs()) { BusinessRules objBusinessRules = new BusinessRules(); using (DataTable dt = objBusinessRules.AuthenticateUser(txtUserName.Text.Trim(), txtPassword.Text.Trim())) { if (!string.IsNullOrEmpty(dt.Rows[0]["User_Name"].ToString())) { panelLogin.Visible = false; menuStrip.Enabled = toolStrip.Enabled = true; User.Instance.User_Name = txtUserName.Text.Trim(); User.Instance.First_Name = Convert.ToString(dt.Rows[0]["First_Name"]); User.Instance.Last_Name = Convert.ToString(dt.Rows[0]["Last_Name"]); User.Instance.Password = Convert.ToString(dt.Rows[0]["Password"]); User.Instance.IsAdmin = Convert.ToBoolean(dt.Rows[0]["IsAdmin"]); userManagementToolStripMenuItem.Visible = deleteAllDataToolStripMenuItem.Visible = User.Instance.IsAdmin; //userManagementToolStripMenuItem.Visible = User.Instance.IsAdmin; this.Text = "Lakshya - Yatra ==== (Logged in User : "******" " + User.Instance.Last_Name + ")"; } else { MessageBox.Show("Invalid User Name/Password combination", "Login Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } }