private T TryCardOperation <T>(Func <SmartCardContext, T> func) where T : class
{
try {
ClearMsg();
using (var card = new SmartCardContext()) {
var readers = card.GetReaders();
if (readers.Length == 0)
{
Alert("No reader is found");
return(null);
}
// TODO: I have one reader only
card.OpenReader(readers[0]);
var rtn = func(card);
card.CloseReader();
return(rtn);
}
}
catch (Exception ex) {
Alert($"Exception: {ex.Message}, check reader and card");
return(null);
}
}
public MemoryCardContext(SmartCardContext context, string reader)
{
uint version;
int ret = MCardInitialize(context.Handle, reader, out this.context, out version);
if (ret != 0)
{
throw new Exception(ret.ToString("x"));
}
}
public MemoryCardContext(SmartCardContext context, string reader) {
uint version;
int ret = MCardInitialize(context.Handle, reader, out this.context, out version);
if (ret != 0)
throw new Exception(ret.ToString("x"));
}
