What causes this error? “Runtime error 380: Invalid property value”

Question

we had developed an application using vb6.0 and SQL server 2000 a few years ago. recently, some of our customers tell us that while running the application, on some of comp

Answer 1

2017 I know... but someone is facing this problem during their code maintenance.

This error happened when I tried:

maskedbox.Mask = "#.###"
maskedbox.Text = "12345678"

To fix that, just set PromptInclude property to "false".