CODE EXAMPLE FOR CSHARP

dialog box with form flutter

void showDialogWithFields() {
  showDialog(
    context: context,
    builder: (_) {
      var emailController = TextEditingController();
      var messageController = TextEditingController();
      return AlertDialog(
        title: Text('Contact Us'),
        content: ListView(
          shrinkWrap: true,
          children: [
            TextFormField(
              controller: emailController,
              decoration: InputDecoration(hintText: 'Email'),
            ),
            TextFormField(
              controller: messageController,
              decoration: InputDecoration(hintText: 'Message'),
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Navigator.pop(context),
            child: Text('Cancel'),
          ),
          TextButton(
            onPressed: () {
              // Send them to your email maybe?
              var email = emailController.text;
              var message = messageController.text;
              Navigator.pop(context);
            },
            child: Text('Send'),
          ),
        ],
      );
    },
  );
}