StringHelper.TrimToNull method

namespace: Serenity   assembly: Serenity.Net.Core

Removes whitespace characters in the left or right of the String string, and if resulting string is empty or null, returns null.

public static string TrimToNull(this string str)

Return Value

Trimmed string, result is null if empty.

Remarks

Generally, when a user entered string is going to be saved to database, if user entered an empty string, null or a string of whitespaces, it is stored as null, otherwise it is expected to remove whitespace at start and end only.Warning: "\n" (line end), "\t" (tab) and some other are also considered as whitespace). To see a list see Trim function.This is an extension method, so it can be called directly as str.TrimToNull().

See Also

• class StringHelper