Question: I have a number like `202667.4`. I want to convert this to number *based on culture*.

For Ex:

> 
> In "de"(German) the number should be in **202.667,40**.
> 
> 
> 

Any help will be greatly appreciated.

Thanks.

Answer: 
If you want to represent existing number (say, `double`) in culture specific format, try *formatting*:

<https://learn.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings>

```
double source = 202667.4;

// "n"  - ... group separators, and a decimal separator with optional negative sign  
// "de" - German culture
string result = source.ToString("n", CultureInfo.GetCultureInfo("de"));

Console.WriteLine(result);

```

Outcome

```
202.667,40

```

If you are given a `string` and you want a number, put `Parse` (`TryParse`):

```
string data = "202.667,40";

double result = double.Parse(data, CultureInfo.GetCultureInfo("de"));

Console.WriteLine(data.ToString(CultureInfo.InvariantCulture));

```

If you don't want to specify the culture each time you work with formatting, you can set the culture as a *current* one:

```
CultureInfo.CurrentCulture = CultureInfo.GetCultureInfo("de");

...

double source = 202667.4;

Console.WriteLine($"{source:n}");

```
You can use this code to convert variables to different cultures:

```
int MyInt = 100;
string MyString = MyInt.ToString("C",CultureInfo.GetCultureInfo("de-DE"));
MessageBox.Show(MyString);

```

If you want to build all programs with a German format you can this code at your main class:

```
using System.Globalization;`

Application.CurrentCulture = CultureInfo.GetCultureInfo("de-DE");`

```