Message=Attempted to read or write protected memory. System.AccessViolationException was unhandled Here is the exception detail that copied to the clipboard : It mentions System.Drawing, but I don't see anything called "System.Drawing" anywhere to even consider troubleshooting it. I've tried setting the PrintForm to "PrintToPrinter" as well as "PrintToPreview" but I don't know anything about its other settings, and certainly not enough to play with it.Īnd here is the exception that comes up, along with the detail (there's more if I click the plus boxes, but it takes up too much space to get a screenshot with it displayed. Here it's generating the print preview, you can see it's already pulling up the code and highlighting "PrintForm1" - I don't know it this is important, but I've verified that the naming matches up and that I'm using the PrintForm button like the assignment says. Here, the code shows all green, no errors, warnings, or messages Since this program is small, I've scrapped it and rewritten from scratch already, after spending hours troubleshooting and searching for answers which haven't really helped. Images below (sorry if they size badly, I'm on a pretty high resolution) as well as the exception information. It highlights PrintForm1.Print() and throws a yellow arrow up next to it. However, after loading the print preview it kicks back to the code page and gives me an access violation. Millspaugh, published by McGraw Hill, this particular program "The Switcher" is on page 98/99, programming exercise 2.1) for a school assignment, and everything shows green in my code. Okay so I'm making a program (if you look at "Programming in Visual Basic 2010, Julia Case Bradley and Anita C. PrintForm Class of all, if this is in the wrong place, mods please relocate as necessary. This example requires that you have a PrintForm component named PrintForm1 and three RadioButton controls on a form. The following example demonstrates how to set the PrintAction property. To do this, use a SaveFileDialog component and assign the return value to the PrintFileName property before calling the Print method. To make sure that the file has a valid path and extension, you can implement your own dialog box. The user is not prompted for a path or file name extension. If no file name is specified, the user is prompted for a file name. ai) in the path specified by the PrintFileName property. When PrintToFile is selected, an image of the form is saved to an Encapsulated PostScript file (.eps. When PrintToPreview is selected, the form is displayed in a standard Windows Forms PrintPreviewDialog control. If no default printer is available, the user is prompted to select a printer. You can override this behavior and explicitly set the printer and printer properties by using the PrinterSettings property. When PrintToPrinter is selected, the output is directed to the system default printer. Public Property PrintAction As PrintAction Member PrintAction : PrintAction with get, set Gets or sets a value indicating whether the output is directed to a printer, to a print preview window, or to a file.
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