Converting a string into double

Sven Nijs

I'm trying to convert a string into a doble in this way:

string latitude = reader.GetAttribute("lat");
string longitude = reader.GetAttribute("lon");
double lat = Convert.ToDouble(latitude);
double lon = Convert.ToDouble(longitude);

When latitude has a value of: 51.66777, lat has a value of 51667777... The same problem for longitude. When I convert the string, the point disappear. Can someone help me?

Thanks!

8 Replies

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Hiren Soni16y ago
0
Santhosh N16y ago
Try to form the whole string message in C# and pass that to javascript ansd check..
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Sven Nijs16y ago
Is it possible the point disappear because I test the value in a message box? When I show the double value in this text box the point disappears, the string version shows the point...

                        String latitude = reader.GetAttribute("lat");
                        String longitude = reader.GetAttribute("lon");
                        Double lat = System.Convert.ToDouble(latitude);
                        Double lon = System.Convert.ToDouble(longitude);
                        HtmlPage.Window.Alert("Lat: " + lat + ", Lon: " + lon);
0
Santhosh N16y ago
There should not be any problem in your code except the data might be coming differently..
check if you are getting . or , carefullly and check
if you are getting other characters and wanted to convert thenm to . you can use this
string latitude = reader.GetAttribute("lat");
string longitude = reader.GetAttribute("lon");
double lat = Convert.ToDouble(latitude.Replace(',','.'); //Replaces all , with .
double lon = Convert.ToDouble(longitude.Replace(',','.');
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Sven Nijs16y ago
I did i your way:

                        String latitude = reader.GetAttribute("lat");
                        String longitude = reader.GetAttribute("lon");
                        Double lat = System.Convert.ToDouble(latitude);
                        Double lon = System.Convert.ToDouble(longitude);

But the point of the string value still disappear after conversion to double...
0
Lalit M16y ago
also try this sample code

string input = "5";

int i = Int32.Parse(input);
double d = Double.Parse(input);
char c = Char.Parse(input);
bool b = Boolean.Parse(input);

for reference
0
Rekha Singh16y ago
i think ur code is correct . i got correct result when i tried in d same way
string latitude = "51.66777";
double lat = Convert.ToDouble(latitude);
Label1.Text = lat.ToString();
output : 51.66777
*****************************************
Please mark it Accepted if u find it helpful.
0

Lalit M16y ago

Use this code sample

String salary = "5555";


// Sample 1
Double mySalary = Double.Parse(salary);

// Sample 2
mySalary = System.Convert.ToDouble(salary);