在月曆上的選定日期存儲用戶輸入

Question

我已經創建了一個表單，用於接受用戶輸入信息的幾個不同部分（標題，位置，日期（從月份日曆等）。），點擊添加按鈕時信息存儲在當前的數組元素中，標題顯示在列表框中。當選擇列表框中的標題時，該特定標題的其餘信息將重新填充到相應的文本框中。

我一直在試圖讓這一步進一步沒有成功。當單擊添加按鈕時，我想將用戶輸入保存到monthCalendar上選擇的日期。因此，如果用戶點擊沒有保存信息的日期，則列表框仍爲空。如果有日期保存的信息，則列表框將顯示標題。

代碼片段：

class MeetingManager 
{ 
    private Meeting[] meetings; 
    public int currentIndex; 
    public int maxIndex; 
    private string title;  
    private string location; 
    private string startTime; 
    private string endTime; 
    private string notes;  

    public MeetingManager() 
    { 
     meetings = new Meeting[10]; 
     currentIndex = -1; 
     maxIndex = -1; 
    } 

    // excluded getter/setters + basic error checking 

    public void Add() 
    { 
     try 
     { 
      if (maxIndex >= meetings.Length - 1) 
      { 
       throw new ApplicationException("YOU CAN ONLY CREATE 10 MEETINGS"); 
      } 
      else 
      { 
       maxIndex++; 
       currentIndex = maxIndex; 
       Meeting temp = new Meeting(Title, Location, StartTime, EndTime, Notes); 
       meetings[maxIndex] = temp; 
       Title = meetings[maxIndex].Title; 
       Location = meetings[maxIndex].Location; 
       StartTime = meetings[maxIndex].StartTime; 
       EndTime = meetings[maxIndex].EndTime; 
       Notes = meetings[maxIndex].Notes; 

      } 
     } 
     catch (ApplicationException ex) 
     { 
      throw ex; // toss it up to the presentation 

     } 
    } 

    public void Add(string title, string location, string startTime, string endTime, string notes) 
    { 
     try 
     { 
      Title = title; 
      Location = location; 
      StartTime = startTime; 
      EndTime = endTime; 
      Notes = notes; 
      Add(); 
     } 
     catch (ApplicationException ex) 
     { 
      throw ex; 
     } 
    } 
    public override string ToString() 
    { 
     return Title; 
    } 

}

 public partial class CalendarForm : Form 
{ 
    private MeetingManager mManager; // reference to business layer object 

    private void calendarSaveChangesButton_Click(object sender, EventArgs e) 
    { 
     try 
     { 
      mManager.Title = textBoxTitle.Text; 
      mManager.Location = textBoxLocation.Text; 
      mManager.StartTime = maskedStartTimeTextBox.Text; 
      mManager.EndTime = maskedEndTimeTextBox.Text; 
      mManager.Notes = notesTextBox.Text; 
      mManager.Add(); 

      meetingListBox.Enabled = true; 
      meetingListBox.Items.Add(mManager); 

      //clears the textBoxes after clickng saveChanges 
      textBoxTitle.Text = ""; 
      textBoxLocation.Text = ""; 
      maskedStartTimeTextBox.Text = ""; 
      maskedEndTimeTextBox.Text = ""; 
      notesTextBox.Text = ""; 


     } 
     catch (ApplicationException ex) 
     { 
      MessageBox.Show(this, ex.Message); 
     } 

    } 

     /// <summary> 
    /// When a meeting is selected from the listBox, it re-populates 
    /// the empty fields with the information stored in the array element 
    /// </summary> 
    /// <param name="sender"></param> 
    /// <param name="e"></param> 
    private void meetingListBox_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     MeetingManager m = meetingListBox.SelectedItem as MeetingManager; 
     if (m != null) 
     { 
      textBoxTitle.Text = m.Title; 
      textBoxLocation.Text = m.Location; 
      maskedStartTimeTextBox.Text = m.StartTime; 
      maskedEndTimeTextBox.Text = m.EndTime; 
      notesTextBox.Text = m.Notes; 

     } 
    } 

}

Answer 1

好吧，我想你可以嘗試這樣的事：

class MeetingManager 
{ 
    ... 


    //add and implement a find method which returns a Meeting-object if there is a 
//corresponding meeting date (in private Meeting[] meetings;) 

    public Meeting MeetingFinder(DateTime meetingTime) 
    { 
     //if there is a corresponding meeting-object for the date, return the meeting object 
     //if there isn't, return null 
    } 

    ... 
} 

---

public partial class CalendarForm : Form 
{ 

    ... 

    private void monthCalendar_DateChanged(object sender, DateRangeEventArgs e) 
    { 
     //which date was selected? 
      var selectedDate = monthCalendar.SelectionRange.Start; 


     //do we have that date in the meetings? 
     var meetingOnTheSelectedDate = mManager.MeetingFinder(selectedDate); 

     if(meetingOnTheSelectedDate != null) 
     { 
      //populate your winform with the data from meetingOnTheSelectedDate 
     } 
    } 

    ... 

}