I have a `IEnumerable<System.Diagnostics.StackFrame> frames` for store some custom StackFrame.
I want to convert that to the string type like `StackTrace.ToString()` format.
for example:

```
   at TestStackTrace.Form1.button2_Click(Object sender, EventArgs e) in 
d:\Programming\temp\TestStackTrace\TestStackTrace\Form1.cs:line 66
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)

```