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在C#中如何在函數參數中返回結構數組?

編輯：關於C語言

頭暈腦漲地研究了一天,就為了實現在函數的參數中返回結構數組。

現供大家分享，節省學習時間。

實例:
  /// <summary>
  /// 用戶信息結構
  /// </summary>
  public struct TUSER
  {
   public string LoginName;
   public string LoginPass;
   public string TrueName;
   public string EMail;
   public int Level;
  }

  /// <summary>
  /// 獲得所有注冊用戶
  /// </summary>
  /// <param name="USERINFO">返回用戶信息結構</param>
  public bool GetUsers(out TUSER[] G_USERINFO)
   {
   USEROP.TUSER[] f_TUSER;
   int CurRec = 0;  //初始化記錄計數器
   int rec_count =0; //計算總記錄數
   SqlConnection myConn = new SqlConnection(connectionString);
   string cmd="select * from " +m_Table;  //SQL查詢語句
   SqlCommand mycmd=new SqlCommand(cmd,myConn);
   mycmd.Connection.Open(); //打開連接
   SqlDataReader adr = null; //創建數據讀取器
   try
   {
    adr = mycmd.ExecuteReader();
    while(adr.Read ())
    {
     rec_count += 1;
    }
    myConn.Close();  //關閉數據庫連接
    mycmd.Connection.Open (); //打開數據庫連接
    try
    {
     adr = mycmd.ExecuteReader ();
     f_TUSER = new USEROP.TUSER[rec_count];
     while(adr.Read())
     {
      f_TUSER[CurRec].LoginName = adr["US_LOGINNAME"].ToString();
      f_TUSER[CurRec].LoginPass = adr["US_LOGINPASS"].ToString ();
      f_TUSER[CurRec].TrueName = adr["US_TrueName"].ToString ();
      f_TUSER[CurRec].EMail = adr["US_EMail"].ToString ();
      f_TUSER[CurRec].Level = Int32.Parse (adr["US_Level"].ToString ());
      CurRec += 1;
     }
     G_USERINFO = f_TUSER;
     myConn.Close (); ///關閉連接
     return true;
    }
    catch
    {
     myConn.Close();
     f_TUSER = new USEROP.TUSER[1];
     f_TUSER[0].LoginName = "";
     f_TUSER[0].LoginPass = "";
     f_TUSER[0].TrueName = "";
     f_TUSER[0].EMail = "";
     f_TUSER[0].Level = 0;
     G_USERINFO = f_TUSER;
     return false;
    }
   }
   catch
   {
    myConn.Close ();
    f_TUSER = new USEROP.TUSER[1];
    f_TUSER[0].LoginName = "";
    f_TUSER[0].LoginPass = "";
    f_TUSER[0].TrueName = "";
    f_TUSER[0].EMail = "";
    f_TUSER[0].Level = 0;
    G_USERINFO = f_TUSER;
    return false;
   }

///////////////// 在WEB FORM中調用如下:
  private void Button3_Click(object sender, System.EventArgs e)
  {
   KSBM.USEROP.TUSER[] f_TUSER; // = new KSBM.USEROP.TUSER(); ///為什麼不"new" 一個結構數組呢?因為傳進來的已是我們要的數據了,所以只要開辟一個存儲空間就行了.
   KSBM.USEROP f_USOP = new KSBM.USEROP();
   bool ret=f_USOP.GetUsers (out f_TUSER); ///調用函數,取得結構數組及信息
   if(f_TUSER.Length !=0) //數據長度為0時,表明無返回數據.
   {
    for(int iloop=0;iloop<f_TUSER.Length;iloop++) ///遍歷數組並輸出到客戶端的浏覽器
    {
     Response.Write (f_TUSER[iloop].LoginName);
     Response.Write (f_TUSER[iloop].LoginPass);
     Response.Write (f_TUSER[iloop].TrueName);
     Response.Write (f_TUSER[iloop].EMail);
     Response.Write (f_TUSER[iloop].Level);
    }
   }
  }

關於C語言