[c#] How to convert string to double with proper cultureinfo

You need to define a single locale that you will use for the data stored in the database, the invariant culture is there for exactly this purpose.

When you display convert to the native type and then format for the user's culture.

E.g. to display:

string fromDb = "123.56";
string display = double.Parse(fromDb, CultureInfo.InvariantCulture).ToString(userCulture);

to store:

string fromUser = "132,56";
double value;
// Probably want to use a more specific NumberStyles selection here.
if (!double.TryParse(fromUser, NumberStyles.Any, userCulture, out value)) {
  // Error...
}
string forDB = value.ToString(CultureInfo.InvariantCulture);

PS. It, almost, goes without saying that using a column with a datatype that matches the data would be even better (but sometimes legacy applies).

Examples related to c#

How can I convert this one line of ActionScript to C#? Microsoft Advertising SDK doesn't deliverer ads How to use a global array in C#? How to correctly write async method? C# - insert values from file into two arrays Uploading into folder in FTP? Are these methods thread safe? dotnet ef not found in .NET Core 3 HTTP Error 500.30 - ANCM In-Process Start Failure Best way to "push" into C# array

Examples related to .net

You must add a reference to assembly 'netstandard, Version=2.0.0.0 How to use Bootstrap 4 in ASP.NET Core No authenticationScheme was specified, and there was no DefaultChallengeScheme found with default authentification and custom authorization .net Core 2.0 - Package was restored using .NetFramework 4.6.1 instead of target framework .netCore 2.0. The package may not be fully compatible Update .NET web service to use TLS 1.2 EF Core add-migration Build Failed What is the difference between .NET Core and .NET Standard Class Library project types? Visual Studio 2017 - Could not load file or assembly 'System.Runtime, Version=4.1.0.0' or one of its dependencies Nuget connection attempt failed "Unable to load the service index for source" Token based authentication in Web API without any user interface

Examples related to localization

What's NSLocalizedString equivalent in Swift? Best practice multi language website Best practice for localization and globalization of strings and labels How to change language of app when user selects language? Lint: How to ignore "<key> is not translated in <language>" errors? Using ResourceManager How do I set the default locale in the JVM? What is the list of supported languages/locales on Android? Android: how to get the current day of the week (Monday, etc...) in the user's language? Get the current language in device

Examples related to globalization

Best practice for localization and globalization of strings and labels how to set default culture info for entire c# application String format currency How do I set the default locale in the JVM? Currency format for display Get current language in CultureInfo How to convert string to double with proper cultureinfo Regular expression for validating names and surnames? How can I detect the encoding/codepage of a text file