I am developing a Smart Device Application in Microsoft Visual Studio 2005 that will run on a Symbol Handheld Device (Model: MC50). I was wondering if anybody knows the class or reference or toolbox control .NET uses to handle barcode scans. I am unable to determine the barcode scan event. I want to be able to scan a barcode capture the value, manipulate the value in the application, display the scanned value, and then write the value to a internal table. Any help or suggestions would be greatly appreciated.
Barcode Scanning in Smart Device Applications for Windows Mobile 5.0 devices
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Barcode Scanning in Smart Device Applications for Windows Mobile 5.0 devices
Th3MachIn3
h1
There are two main ways to do this:
- Download all of the supported manufacturer's SDKs and use conditional compilation to enable the particular library. The downside to this is that some manufacturers may not be taken into account. You will need to create a generic/no-SDK build also to support manufacturers for which you do not have the SDK, or for the case where they run the app on a device without a scanner.
- Have the scanner enabled external to your application via a wedge. For example, there is a little program called scanwedge.exe for Symbol devices that simply enables the scanner. Then when your app runs, any scans are simply typed into the focused control. Scanning and keyboard entry would look the same from your app's point of view. There are also open source wedges out there...
For Symbol devices I generally use the second method because it is easier to develop. Then just use scanwedge.
Kjelle
M_Over
For my applications, I have created a "Proxy" control that will try to detect the device the application is installed on. This "Proxy" control will fire its own event when a scan takes place. By using this proxy, you can code your application to one interface, then let the proxy worry about the device specifics. As you add new hardware, you don't need to putz around with the business logic.
If the users of your application are going to depend on having the scanner read a barcode, then I would try to avoid any "Wedge" software simply because you can not be sure the device will always have the wedge loaded. In the case of the Symbol (now Motorola) 9090x, the wedge is a bit flakey.
ski123
Download the SMDK 1.5 .NET (current released version) from SYMBOL.. currently bought by motorola. The file should be in the developer Zone section, download section. They provide a number of samples that you can use.
Just to let you know that there are issues with the .NET SMDK. You will eventually encounter a SCAN_Enable error at some point. No resolution at this point except to do a soft reset. Let me know if you need additional help.
zandro