I am developing window phone 7 application in silverlight. I am new to the window phone 7 application. I have the long value in String format as follows
String A
The maximum Int32 value in C# is 2,147,483,647, shorter than the 15 digits you require.
Int32
Are you sure you need to convert this value to an int? It sounds like you'd be better off storing the value in a long, or leaving it as a String.
long
String