how can I extend a progress bar in a AlertDialog(fluent UI)?

Question

I would like to implement an AlertDialog using Flutter and fluent_ui for Windows. This is a progressive progress bar, so the percentage will change when some of my other code executes. My problem is that the Progress Bar does not extend until the end of the AlertDialog. Currently, the progress bar looks like below, set at progress of 50.

Edit: Below is the code I have tried

showDialog(
      context: context,
      builder: (context) {
        return ContentDialog(
          title: Text(title),
          content: const Expanded(
            child: ProgressBar(value: 50, strokeWidth: 10),
          ),
          actions: [
            const SizedBox(),
            Button(
                style: MyButtonStyles.dialogYes(),
                child: const Text('OK', style: TextStyle(fontSize: 16.0)),
                onPressed: () {
                  Navigator.pop(context);
                }),
          ],
        );
      },
    );

Solution

You can replace Expanded with SizedBox by providing infinity/ specific width. Also, can be use SizedBox.fromSize.

ContentDialog(
  title: Text("title"),
  content: SizedBox(
    width: double.infinity,
    child: ProgressBar(value: 50, strokeWidth: 10),
  ),

Comments

[MendelG]

Please edit your question to show the code you have already tried

[Eduard]

I've added the code to the question.