这篇文章主要介绍了C# 中的GroupBy的动态拼接问题,在文章给大家提到了C# List泛型集合中的GroupBy＜＞用法详解，需要的朋友可以参考下
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C# 中的GroupBy的动态拼接问题及GroupBy＜＞用法介绍
废话不多说了，直接给大家贴代码了，具体代码如下所示：
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public class Person{ public string FirstName{set;get;} public string LastName{set;get;} public Person(){} public Person(string firstName, string lastName) { FirstName = firstName; LastName = lastName; }}List<Person> personList=new List<Person>();personList.Add(new Person() { FirstName = "Mickey", LastName = "Mouse" });personList.Add(new Person() { FirstName = "Mickey", LastName = "Mouse" });personList.Add(new Person() { FirstName = "zhang", LastName = "san" });string columnName="FirstName";var dics=personList.GroupBy(x => GetPropertyValue(x, columnName)).ToDictionary(x=>x.Key,x=>x.Count());foreach(var dic in dics){ textBox1.AppendText(string.Format("{0},{1}\r\n",dic.Key,dic.Value));} |
ps：下面看下C# List泛型集合中的GroupBy<>用法
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