Closing a form and then call another one in c# windows

Question

Hi to all,

I have a main form,in this i placed menustrip with some menuitems. When i clicked a menu item form will displayed.When I clicked another one the previous one should be closed.

I used this below code

this.Close();

AdminMainForm adminMainForm = new AdminMainForm();

adminMainForm.Show();

But this code not working for my query.

when I use this.Hide() the Application is still running

Finally my query is when i enter and close the login form automativally it will displayed main form. please reply to me

Regards

Nagaraju T

Iftikar Hussain · Answer

the below code you need to put in admin form like below public AdminForm() { InitializeComponent(); List openForms = new List (); foreach (Form f in Application.OpenForms) openForms.Add(f); foreach (Form f in openForms) { if (f.Name != "AdminForm") { f.Close(); } } } and in Program.cs [STAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); LoginForm login = new LoginForm(); login.Show(); Application.Run(); } Regards, Iftikar

NAGARAJU TAMADA · Answer

Thanks for the Answer Its working fine now Regards NagaRaju T

NAGARAJU TAMADA · Answer

After Clicking The Submit button of login form Loginform close and Adminform will open my code is here /// /// Adding the New user into the database /// /// /// private void btnSubmit_Click(object sender, EventArgs e) { try { SqlConnection sqlConnection = vendor.DataSourceClass.getSqlConnection(); sqlConnection.Open(); DataTable dt = new DataTable(); SqlDataAdapter da = new SqlDataAdapter("Select * from SignUp where UserName='" + txtUserName.Text + "'", sqlConnection); da.Fill(dt); string Username = dt.Rows[0][1].ToString(); string Password = dt.Rows[0][2].ToString(); string Role = dt.Rows[0][5].ToString(); if (txtUserName.Text==Username && txtPwd.Text == Password && comboRole.Text== Role) { GlobalVariableDetails.UserName = txtUserName.Text; GlobalVariableDetails.Date = DateTime.Now; if (comboRole.Text == "Admin") { AdminMainForm adminMainForm = new AdminMainForm(); List openForms = new List (); foreach (Form f in Application.OpenForms) openForms.Add(f); foreach (Form f in openForms) { if (f.Name != "adminMainForm") { f.Close(); } } adminMainForm.Show(); } else { UserMasterForm userMasterForm = new UserMasterForm(); userMasterForm.Show(); } } else { MessageBox.Show("Invalid UserName and Password"); } } catch (Exception exception) { MessageBox.Show("Invalid UserName And Password, Please Contact Administrator"); string errorMessage = ErrorHandling.ExceptionClass.CreateErrorMessage(exception); ErrorHandling.ExceptionClass.LogFileWrite(errorMessage); } }

Iftikar Hussain · Answer

can you share your code? Regards, Iftikar

Iftikar Hussain · Answer

what is happening now? Regards, Iftikar

NAGARAJU TAMADA · Answer

Please send another one.my query is still not working

Iftikar Hussain · Answer

try like this in Initialize form List openForms = new List (); foreach (Form f in Application.OpenForms) openForms.Add(f); foreach (Form f in openForms) { if (f.Name != "Menu") f.Close(); } Regards, Iftikar

NAGARAJU TAMADA · Answer

Thanks for the Answer. But Iam not using the MDI container.Iam using normal form and placed menustrip and add forms to this menu strip items. Reply to me

Iftikar Hussain · Answer

Hi, Please refer the below link http://www.cs.trinity.edu/~thicks/Tutorials/Visual-Studio-Windows-App-Form-MenuStrip-Apps/Visual-Studio-Windows-App-Form-MenuStrip-Apps.html Regards, Iftikar

Closing a form and then call another one in c# windows

Answers (9)