AutoCAD .NET :: Call A Procedure Involving Pick Points Recursively

I am in the process of translating existing VBA code into VB.NET, and I just ran into some issues regarding how to interpret VBA's GOTO in VB.NET. In the VBA, the programmer has the code written thus...

Public Sub addTag()
Dim ptStart, ptEnd As Variant
Dim annotation As Object

[Code].....

Without the while loop, single execution works perfectly. But the while loop to emulate multiple (recursive) execution raises some issues.

My problem occurs during execution of my VB.NET code, and has to do with display of the generated entities after the user picks points.

User picks the start point, then picks the end point, but nothing is displayed in the modelspace; rather, user is prompted immediately to pick start point and end point all over again (because of the while loop I used to emulate VBA's GOTO).

However, once user presses ESC, all the leaders and blocks that were drawn during the execution of the while loop are immediately displayed.

Is there a way for me to make it so that EACH time the while loop executes, the end product is IMMEDIATELY displayed in modelspace at the end of EACH loop, BEFORE the user is prompted to pick points all over again (beginning of the next loop)?

The VBA code executes as expected during runtime, as a result of the GOTO StartAddTag line of code.

But I can't use GOTO in my VB.NET code because of its messy nature, so I used a while loop instead. And the while loop isn't performing as expected.