New feature for Windows Phone 8: Access to SD card

Windows Phone 8 has added support for the SD card. developers can directly access the unencrypted content of the SD card, but cannot perform the write operation.

In addition, you can copy approved applications to the SD for installation. You only need to connect your mobile phone to the marketplace for verification during the installation process.ProgramYou can directly install and use it.

CodeId_cap_removable_storage is required for SD card operations,

Use code snippets to reference the official route mapper sample example. For the complete example, go to: Click to open the link.

 

// Process a route from the SD card. private async task processsdgpxfile (string _ sdfilepath) {// connect to the current SD card. externalstoragedevice sdcard = (await externalstorage. getexternalstoragedevicesasync ()). firstordefault (); // If the SD card is present, get the route from the SD card. if (sdcard! = NULL) {try {// get the route (. GPX file) from the SD card. externalstoragefile file = await sdcard. getfileasync (_ sdfilepath); // create a stream for the route. stream S = await file. openforreadasync (); // read the route data. readgpxfile (s);} catch (filenotfoundexception) {// The route is not present on the SD card. messageBox. show ("that route is missing on your SD card. ") ;}} else {// No SD card is present. messageBox. show ("the SD card is mssing. insert an SD card that has a routes folder containing at least one. GPX file and try again. ");}}