如何从字符串中获取姓氏

问题描述

我的clientName如下：

1）MOHD ASHRAF

2）PRAMODE KUMAR MEHROTRA

3）SHUSHMA VERMA

4）KUMAR VIVEK MISHRA



i希望得到他/她的姓氏，如{ASHRAF，MEHROTRA，VERMA， MISHRA}

所以我会告诉我

Hi,
My clientName is following:
1)MOHD ASHRAF
2)PRAMODE KUMAR MEHROTRA
3)SHUSHMA VERMA
4)KUMAR VIVEK MISHRA

i want to get his/her last name like{ASHRAF, MEHROTRA,VERMA,MISHRA}
so i will get plz tell me

推荐答案

public static class ExtensionMethods
{
     public static string GetLastname(this string name) // create this extension method
     {
          string[] parts = name.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
          string lastname = parts[parts.Length - 1];
          return lastname;
     }
}

string lastname = name.GetLastname(); // now, try this code to get the last name

如果你有一个名字列表，如果你想获得一个姓氏列表，那么首先创建 GetLastname 扩展方法，然后尝试这个：

If you've a list of names, and if you want to get a list of last names, then first create the GetLastname extension method, and then try this:

List<string> lastnames = names.Select(x => x.GetLastname());

有关扩展方法的更多信息： []



希望这有帮助。

More about extension methods: Extension Methods (C# Programming Guide)[^]

Hope this helps.

string tempName = "Ashok Kumar Malhotra";
string surname = tempName.Substring(tempName.LastIndexOf(' ') + 1);

DECLARE @tmp TABLE (sName VARCHAR(300))

INSERT INTO @tmp (sName)
SELECT 'MOHD ASHRAF'
UNION ALL SELECT 'PRAMODE KUMAR MEHROTRA'
UNION ALL SELECT 'SHUSHMA VERMA'
UNION ALL SELECT 'KUMAR VIVEK MISHRA'

SELECT sName, SUBSTRING(sName,LEN(sName) - CHARINDEX(' ',REVERSE(sName)) + 2,LEN(sName)) AS LastName
FROM @tmp

结果：

Result:

MOHD ASHRAF		ASHRAF
PRAMODE KUMAR MEHROTRA	MEHROTRA
SHUSHMA VERMA		VERMA
KUMAR VIVEK MISHRA	MISHRA

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