关于c＃：大写首字母和姓氏的问题

Issue in capitalizing first letter of first name and last name

我想把名字、中间名和姓氏的第一个字母大写。我正在尝试使用System.Globalization.textinfo.toitlecase(newuser.firstname)，但在Visual Studio中遇到一个错误，它说"非静态字段、方法或属性需要对象引用"。帮助我解决这个问题：

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public static UserAccount CreateUser(string firstName, string middleName, string lastName, string nameSuffix, int yearOfBirth, int? monthOfBirth, int? dayOfBirth, string email, string password, UserRole roles, bool tosAccepted = false)
{
var newUser = new UserAccount
{
CreationDate = DateTime.Now,
ActivationCode = Guid.NewGuid(),
FirstName = firstName,
MiddleName = middleName,
LastName = lastName,
NameSuffix = nameSuffix,
YearOfBirth = yearOfBirth,
MonthOfBirth = monthOfBirth,
DayOfBirth = dayOfBirth,
Email = email,
UserRoles = roles,
ToSAccepted = tosAccepted
};
string newUsers= System.Globalization.TextInfo.ToTitleCase(newUser.FirstName);
newUser.SetPassword(password);
return newUser;
}

相关讨论

ToTitleCase是一个实例方法，因此您必须引用TextInfo的实例来调用它。您可以从当前线程的区域性中获得TextInfo的一个实例，如下所示：

1	var textInfo = System.Threading.Thread.CurrentThread.CurrentCulture.TextInfo;

或者来自这样的特定文化：

1	var textInfo = new CultureInfo("en-US",false).TextInfo;

号

另外，它返回一个新的字符串，而不是修改您传入的字符串。尝试类似的方法：

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public static UserAccount CreateUser(string firstName, string middleName, string lastName, string nameSuffix, int yearOfBirth, int? monthOfBirth, int? dayOfBirth, string email, string password, UserRole roles, bool tosAccepted = false)
{
var textInfo = System.Threading.Thread.CurrentThread.CurrentCulture.TextInfo;

var newUser = new UserAccount
{
CreationDate = DateTime.Now,
ActivationCode = Guid.NewGuid(),
FirstName = textInfo.ToTitleCase(firstName),
MiddleName = middleName,
LastName = textInfo.ToTitleCase(lastName),
NameSuffix = nameSuffix,
YearOfBirth = yearOfBirth,
MonthOfBirth = monthOfBirth,
DayOfBirth = dayOfBirth,
Email = email,
UserRoles = roles,
ToSAccepted = tosAccepted
};
newUser.SetPassword(password);
return newUser;
}