如何在c＃win表单中加载进度条？

Question

我想在C＃VS2012中打开一个winForm。并使用此代码结构来加载表单。我正在尝试查看表单的加载状态我该怎么做。 fm.LoadingStatus（） ;是为了表示目的，我将调用哪个函数来显示正确的加载状态。

            .
            .
            formOpen = Application.OpenForms["student"];
            if (formOpen == null)
            {
                fm = new student();
                fm.TopLevel = false;
                fm.Parent = this.panel1;
                fn.Show(); //I want to show this progress in loaging bar
                int i=0;
                progressBar1.Visible = true;
                progressBar1.Value = 0;
                progressBar1.Minimum = 0;
                progressBar1.Maximum = ***fm.LoadingStatus()***;
                progressBar1.Step = 100;

                for (i = 0; i <= 100; i++)
                {
                    progressBar1.PerformStep();
                }
            }
           .
           .