C＃获取DisplayName的缩写

如何解决C＃获取DisplayName的缩写

我正在尝试从显示名称中提取缩写，以用于显示其缩写。 我发现这很困难，因为字符串是一个包含一个或多个单词的值。我该如何实现？

示例：

'约翰·史密斯'=> JS

'史密斯，约翰'=> SJ

'约翰'=> J

'Smith'=> S

public static SearchDto ToSearchDto(this PersonBasicDto person)
        {
            return new SearchDto
            {
                Id = new Guid(person.Id),Label = person.DisplayName,Initials = //TODO: GetInitials Code
            };
        }

我使用以下解决方案：我创建了一个帮助程序方法，该方法可以测试多种情况。

public static string GetInitials(this string name)
        {
            if (string.IsNullOrWhiteSpace(name))
            {
                return string.Empty;
            }

            string[] nameSplit = name.Trim().Split(new string[] { ","," " },StringSplitOptions.RemoveEmptyEntries);
            var initials = nameSplit[0].Substring(0,1).ToUpper();

            if (nameSplit.Length > 1)
            {
                initials += nameSplit[nameSplit.Length - 1].Substring(0,1).ToUpper();
            }

            return initials;
        }

解决方法

以下内容如何：

   void Main()
{
    Console.WriteLine(GetInitials("John Smith"));
    Console.WriteLine(GetInitials("Smith,John"));
    Console.WriteLine(GetInitials("John"));
    Console.WriteLine(GetInitials("Smith"));
}

private string GetInitials(string name)
{
    if (string.IsNullOrWhiteSpace(name))
    {
        return string.Empty;
    }
    var splitted = name?.Split(' ');
    var initials = $"{splitted[0][0]}{(splitted.Length > 1 ? splitted[splitted.Length - 1][0] : (char?)null)}";
    return initials;
}

输出：

JS-SJ-J-S

,

简单易懂的代码，并处理包含名字，中间名和姓氏的名称，例如“ John Smith William”。

 Console.WriteLine(GetInitials("John Smith"));  // JS
 Console.WriteLine(GetInitials("Smith,John")); // SJ
 Console.WriteLine(GetInitials("John"));        // J
 Console.WriteLine(GetInitials("Smith"));       // S

 Console.WriteLine(GetInitials("John Smith William"));   // JSW


 static string GetInitials(string name)
    {                       
        // StringSplitOptions.RemoveEmptyEntries excludes empty spaces returned by the Split method

        string[] nameSplit = name.Split(new string[] { ","," "},StringSplitOptions.RemoveEmptyEntries);
                    
        string initials = "";

        foreach (string item in nameSplit)
        {                
            initials += item.Substring(0,1);
        }

        return initials;           
    }

,

或者只是另一种变体，作为扩展方法，只需进行少量的健全性检查

给予

public static class StringExtensions
{
   public static string GetInitials(this string value)
      => string.Concat(value
         .Split(new[] { ' ' },StringSplitOptions.RemoveEmptyEntries)
         .Where(x => x.Length >= 1 && char.IsLetter(x[0]))
         .Select(x => char.ToUpper(x[0])));
}

用法

var list = new List<string>()
{
   "James blerg Smith","Michael Smith","Robert Smith 3rd","Maria splutnic Garcia","David Smith","Maria Rodriguez","Mary Smith","Maria Hernandez"
};

foreach (var name in list)
   Console.WriteLine(name.GetInitials());

输出

JBS
MS
RS
MSG
DS
MR
MS
MH

Full Demo Here

,

下面的代码来自here。该代码的作用是从字符串中获取每个单词的第一个字母，并将其输出为大写字母。

   static void printInitials(String name) 
    { 
        if (name.Length == 0) 
            return; 
  
        // Since touuper() returns int,// we do typecasting 
        Console.Write(Char.ToUpper(name[0])); 
  
        // Traverse rest of the string and  
        // print the characters after spaces. 
        for (int i = 1; i < name.Length - 1; i++) 
            if (name[i] == ' '&((i + 1)!=name.Length)) 
                Console.Write(" " + Char.ToUpper(name[i + 1])); 
    }