$($just post a screenshot of the output that the code is working$)$

using System;

using System.Windows.Forms;

namespace UserInfoFormApp

$\{$

public partial class MainForm : Form

$\{$

public MainForm$()$

$\{$

InitializeComponent$()$;

InitializeGenderRadioButtons$()$;

$\}$

private void InitializeGenderRadioButtons$()$

$\{$

$//$ Gender radio buttons

radioButtonMale.Text $=$ "Male";

radioButtonFemale.Text $=$ "Female";

radioButtonOther.Text $=$ "Other";

$\}$

private void buttonSubmit$\_$Click$($object sender$,$ EventArgs e$)$

$\{$

$//$ Get user input

string name $=$ textBoxName.Text.Trim$()$;

string surname $=$ textBoxSurname.Text.Trim$()$;

int age;

if $(!$int.TryParse$($textBoxAge$.$Text, out age$))$

$\{$

MessageBox.Show$("$Please enter a valid age.", "Error", MessageBoxButtons.OK$,$ MessageBoxIcon.Error$)$;

return;

$\}$

string gender $=$ GetSelectedGender$()$;

string city $=$ textBoxCity.Text.Trim$()$;

$//$ Validate input

if $($string$.$IsNullOrEmpty$($name$)||$ string.IsNullOrEmpty$($surname$)||$ string.IsNullOrEmpty$($gender$)||$ string.IsNullOrEmpty$($city$))$

$\{$

MessageBox.Show$("$Please fill in all fields.", "Error", MessageBoxButtons.OK$,$ MessageBoxIcon.Error$)$;

return;

$\}$

$//$ Display welcome message

string welcomeMessage $=$ $"Welcome, $\{$name$\}\{$surname$\}!$ Age: $\{$age$\}$ Gender: $\{$gender$\}$ City: $\{$city$\}"$;

MessageBox.Show$($welcomeMessage$,$ "Welcome", MessageBoxButtons.OK$,$ MessageBoxIcon.Information$)$;

$//$ Clear the form after submission

ClearForm$()$;

$\}$

private string GetSelectedGender$()$

$\{$

if $($radioButtonMale$.$Checked$)$

return "Male";

else if $($radioButtonFemale$.$Checked$)$

return "Female";

else if $($radioButtonOther$.$Checked$)$

return "Other";

else

return string.Empty;

$\}$

private void ClearForm$()$

$\{$

textBoxName.Clear$()$;

textBoxSurname.Clear$()$;

textBoxAge.Clear$()$;

radioButtonMale.Checked $=$ false;

radioButtonFemale.Checked $=$ false;

radioButtonOther.Checked $=$ false;

textBoxCity.Clear$()$;

$\}$

$\}$

$\}$