C# - Force String.Format to use decimals and NEVER commas

Question

Basically I'm realizing that my application is using commas instead of decimals, and i NEVER want to allow this. Anyone know how I can correct? I can't find one thing via google that is to force decimals, it's all about forcing commas.

         return String.Format("{0}f, {1}f, {2}f, {3}f, {4}f, {5}f, {6}f, {7}f, {8}f, {9}f, {10}f, {11}f, {12}f, {13}f, {14}f, {15}f", M.M11, M.M12, M.M13, M.M14, M.M21, M.M22, M.M23, M.M24, M.M31, M.M32, M.M33, M.M34, M.OffsetX, M.OffsetY, M.OffsetZ, M.M44);

Answer 1

You can use the other overload:

return String.Format(
    CultureInfo.InvariantCulture // <<== That's the magic
,   "{0}f, {1}f, {2}f, {3}f, {4}f, {5}f, {6}f, {7}f, {8}f, {9}f, {10}f, {11}f, {12}f, {13}f, {14}f, {15}f"
,   M.M11, M.M12, M.M13, M.M14, M.M21, M.M22, M.M23, M.M24, M.M31, M.M32, M.M33, M.M34, M.OffsetX, M.OffsetY, M.OffsetZ, M.M44
);

This way of calling ensures that the invariant culture is being passed as the format provider to the String.Format, ensuring that you get dots for numbers, dollars for currency symbols, English for names of the months and days, and so on.

Answer 2

Try setting the culture to US English for the String.Format function:

String.Format(new CultureInfo("en-US"), "{0}f, {1}f, {2}f", etc)