拆分一個數據行成多個數據行

Question

我有3列的數據表：

Name      age    profession 

John|James|Billy  25|31|28   professor 

我想爲了分割該行有3行：

Name      age    profession 

John      25    professor 
James     31    professor 
Billy     28    professor 

Answer 1

String.Split和循環是你的朋友。

var tblFlattenedStudents = tblStudents.Clone(); 
foreach (DataRow row in tblStudents.Rows) 
{ 
    var names = row.Field<string>("Name").Split('|'); 
    var ages = row.Field<string>("age").Split('|'); 
    var profession = row.Field<string>("profession"); 
    for (int i = 0; i < names.Length; i++) 
    { 
     var newRow = tblFlattenedStudents.Rows.Add(); 
     newRow.SetField("Name", names[i]); 
     newRow.SetField("age", ages.ElementAtOrDefault(i)); 
     newRow.SetField("profession", profession); 
    } 
} 

Answer 2

假設你想在這裏設置了POCO，而不是數據表/數據的一些寫得不好的代碼能滿足您的需要。

public class Teacher 
{ 
    public string Name { get; set; } 
    public string Age { get; set; } 
    public string Profession { get; set; } 

    public static IEnumerable<Teacher> YieldFromCSV(string nameData, string ageData, string professionData) 
    { 
     // you really want to include error checking here 
     var names = nameData.Split('|'); 
     var ages = ageData.Split('|'); 
     var professions = professionData.Split('|'); 

     for (var i = 0; i < names.Length; i++) 
     { 
      yield return new Teacher 
       { 
        Name = names[i], 
        Age = ages.ElementAtOrDefault(i), 
        Profession = professions.ElementAtOrDefault(i) ?? professions.ElementAtOrDefault(0) 
       }; 
     } 
    } 
}