Question

我嘗試將字符串[]添加到列表

代碼：

foreach (int software_id in softwarelist) 
{ 
    String sqlstring = "SELECT SoftwareName, Task_idn_Install, Task_idn_Deinstall, KZ, ParameterFeld FROM TUI_Software WHERE Sw_idn = '" + software_id + "'"; 
    SqlCommand cmd1 = new SqlCommand(sqlstring, con); 
    SqlDataReader result_sw_info = cmd1.ExecuteReader(); 

    if (result_sw_info.HasRows) 
    { 
     result_sw_info.Read(); 

     softwarename = result_sw_info[0].ToString(); 
     task_idn_install = result_sw_info[1].ToString(); 
     task_idn_deinstall = result_sw_info[2].ToString(); 
     indicator = result_sw_info[3].ToString(); 
     parameter = result_sw_info[4].ToString(); 

     string[] software_data = new string[] {sw_id, softwarename, task_idn_install, task_idn_deinstall, indicator, parameter }; 

     softwarelist_insert.Add(software_data); 
    } 
    result_sw_info.Close(); 
} 

所以在softwarelist_insert鍵從0開始。但我怎麼可以添加軟件數據與foreach中的關鍵software_id。因爲我想用software_id標識列表中的arrys。

Answer 1

使用System.Collections.Generic Dictionary<string, string[]>而不是List<string[]>。

var softwarelist_insert = new Dictionary<string, string[]>(); 
... 
softwarelist_insert.Add(software_id, software_data); 

更好的是，使用強類型對象而不是字符串[]。

public class SoftwareData { 
    public string SoftwareName { get; set; } 
    public string TaskIdnInstall { get; set; } 
    ... 
} 

然後

var softwarelist_insert = new Dictionary<string, SoftwareData>(); 
... 
var = new SoftwareData { 
    SoftwareName = result_sw_info[0].ToString(), 
    TaskIdnInstall = result_sw_info[1].ToString(), 
} 
softwarelist_insert.Add(software_id, data); 

Answer 2

您可以創建自己的類型和添加數據。 首先創建這樣

public class softwarelist_insert_class 
{ 
    public string ID {get;set;} 
    public List<string>softwarelist_insert{get;set;} 
} 

類然後你就可以創建這種類型

List<softwarelist_insert_class> variable_name=new List<softwarelist_insert_class>(); 

然後你就可以添加數據的列表變量，如：

List<string> software_data = List<string> {sw_id, softwarename, task_idn_install, task_idn_deinstall, indicator, parameter }; 

variable_name.Add({id,software_data});