Why is the ProgressBar not updating?

Question

C++ / C#

mainform:

public void AnalysisData()
{
  ProgressForm PF = new ProgressForm();
  PF.ShowDialog(this);
  PF.UpdateProgress(50);
}

ProgressBarForm Method:

public void UpdateProgress(int value)
{
  Progress.Value = value;
}

When the form appeared, progress remained at 0% as it was. What's wrong?

Answer 1

ShowDialog stops further code execution until the form is closed. You need to update the progressbar first and then display the form:

public void AnalysisData()
{
  ProgressForm PF = new ProgressForm();
  PF.UpdateProgress(50);
  PF.ShowDialog(this);
}