Dynamsoft TWAIN Products

We have DWT as part of a page that gets loaded when entering a new job. Some people have scanners attached to their pc and some don't. is there anyway to determine if the user has a scanner and the DWT installed? For those that don't it is causing all kinds of problems.

Hi,

To check whether there is a driver installed on a machine, you can use the SourceCount property. If the property returns 0, it indicates that no driver is installed.

If you have a driver installed on the machine, you can take advantage of the OpenSource method. The scanner is not available for scanning if OpenSource returns false.

To check whether the control has been installed, you can call one of Dynamic Web TWAIN's property or method when loading the page. For instance, you can call ErrorCode in the OnPageLoad function. If you get 0 (successful) from this property, it means the control has been initialized successfully.