CODEWITHSUNDEEP
asp.net-mvcrazorfloating-point
nal
nal

Reputation: 119

Error comes from float data type

I have defined Latitude and Longitude in my database. Both are Float data type. I want to display the geo information on a map. My problem is when I use @Model (I am using Asp.net MVC and Razor syntax) to pass these information to varables. The code is

var latitude = @Model.Latitude;
var longitude = @Model.Longitude;

It showed me a curly red line behind each line. And when I hovered mouse there, it displayed like 

Double?Dinner.Latitude
Double?Dinner.Longitude

I dont have any idea about it. Then I tried to cast the datatype like

var latitude = (double)(@Model.Latitude);
var latitude = (double)(@Model.Longitude);

The red curly line did dispear but it showed me

"Undefined Double"

Who knows why?

Thanks

Upvotes: 1

Views: 962

Answers (2)

Altaf Sami
Altaf Sami

Reputation: 846

decimal latitude = Convert.ToDecimal(Model.Latitude);
decimal longitude= Convert.ToDecimal(Model.Longitude);

Upvotes: 1

Felipe Oriani
Felipe Oriani

Reputation: 38608

When you are on a razor scope, you do not need to use @ keyworkd to access server-side values. Just try to open a razor block and set the variables, try something this:

@{

  var latitude = (double)Model.Latitude;
  var longitude= (double)Model.Longitude;

}

And then to show it, use the @ razor keyworkd:

<p>@latitude</p>
<p>@longitude</p>

you also can format this values using ToString() method from double type:

<p>@latitude.ToString("0.000")</p>

Upvotes: 0

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