problem in GetLocation();

Hello,
I am having a problem while interfacing mine software with GPS Locater. I am getting Lat & Long in text box correctly with mine GPS Locator. But having problem with Lat & Long ... When I click button to find Map.Its give me error ...............at getlocation();

loc = axMappointControl1.ActiveMap.GetLocation(Lat,Long, Altitute);
Error is:
An unhandled exception of type 'System.FormatException' occurred in mscorlib.dll
Additional information: Input string was not in a correct format....


It is giving error as GetLocation(); accepts in double format. I tried this

string Lat;
string Lon;
/////as I am using some other string varaibles to get NMEA data...
txtLat.Text = Lat;
txtLon.Text = Lon;

double lat = Convert.ToDouble(this.txtLat.Text as string);

double lon = Convert.ToDouble(this.txtLong.Text as string);
Hope to hear from you guys.
Regards.
Nasir

Maybe you spelled Altitude wrong (Altitute)?

Mike Mattys

Hi,

as I am using some other string varaibles to get NMEA data

Do you mean that you use Convert.ToDouble() to convert an NMEA formatted string to a double? NMEA format is not same as a double, it is (d)ddmm.fff(f)

Hello,
Thanks actually I was adding NMEA "GPGGA" data and i converted all in string. But as getlocation(); accepts double format, so I removed N & W from the array of GPGGA and now it works fine. Thanks you vey much once again.................
Nasir

Hi,

Just removing the N and W does not make it the right number. Nmea format for latitude is ddmm.fff(f) and for longitude dddmm.fff(f), where (d)dd is degrees, mm is minutes and fff(f) are the fractions of the minutes.

for example latitude: 5030.000 is 50.5 degree witch is what GetLocation wants.

Hello,
Thanks. I already did this conversion from DMS to DD & I am getting mine exact location where I am.
Regards.
Nasir