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我設置了一個包含名稱/數字/等的類，並創建了一個保存它們的對象列表。我想在ListView中的第二個窗體上顯示它們。現在，我使用的是吸氣像...我可以在C＃中將對象列表從一個表單傳遞給另一個表單嗎？
public List<Employee> GetEmpList(){
return EmployeeList;
}
然後在第二個窗體的構造我使用Form1.GetEmpList（）之類......
DisplayForm{
InitializeComponent();
LoadEmployees(EmployeeAddition.GetList());
}
我正在和錯誤說「非靜態字段需要對象引用」。我調用的方法是非靜態的，並返回Form1類中List的引用。我甚至試圖讓List公開並使用Form1.List調用，但它仍然給我同樣的錯誤。
有沒有辦法在表單類之間傳遞一個List或是不可能的？
編輯：Poeple說，需要更多的信息。我不想在這裏複製粘貼所有的代碼，但是我只是因爲我是新手而不太清楚什麼是相關的，哪些不相關。 （我正在上一堂課，但遠程學習，而我的老師是......好遠程老師，沒用的，她實際上告訴我在這裏問）
我想我缺少如何instatize方法，我認爲當從該類創建對象時，方法成爲對象的一部分。該方法是Form1（重命名，但多數民衆贊成是什麼）類/對象的一部分。我會在這裏愚弄這些代碼，我不知道這是否令人不悅。如果是這樣，我很抱歉。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace EmplyeeList
{
public partial class EmployeeDisplay : Form
{
public EmployeeDisplay()
{
InitializeComponent();
LoadEmployees(EmployeeAddition.GetList());
}
private void LoadEmployees(IList<CorpEmployee> emp)
{
foreach (CorpEmployee ce in emp)
{
ListViewItem lvi = new ListViewItem();
lvi.SubItems.Add(ce.Name);
lvi.SubItems.Add(ce.Address);
lvi.SubItems.Add(ce.PhoneNumber);
lvi.SubItems.Add(ce.ServiceArea);
lvi.SubItems.Add(ce.EmplNumber.ToString());
lvi.SubItems.Add(ce.RoomNumber.ToString());
lvi.SubItems.Add(ce.PhoneExt.ToString());
lvi.SubItems.Add(ce.email);
displayListView.Items.Add(lvi);
}
}
private void closeButton_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
這是第一個Form類加載...
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace EmplyeeList
{
public class EmployeeAddition : Form
{
//Create a list to hold CorpEmployee objects.
private List<CorpEmployee> CorpEmplList = new List<CorpEmployee>();
public EmployeeAddition()
{
InitializeComponent();
}
private void saveButton_Click(object sender, EventArgs e)
{
int testingNum; //Used for output in parsing numbers
//If statments are used to make sure ints are ints, and nothing is blank.
if (Int32.TryParse(employeeNumTextBox.Text, out testingNum) || ! (employeeNumTextBox.Text == ""))
{
if (Int32.TryParse(roomNumTextBox.Text, out testingNum) || !(roomNumTextBox.Text == ""))
{
if (Int32.TryParse(phoneExtTextBox.Text, out testingNum) || !(phoneExtTextBox.Text == ""))
{
if (!(nameTextBox.Text == "") || !(addressTextBox.Text == "") || !(titleTextBox.Text == "") || !(phoneNumberTextBox.Text == "") ||
!(serviceAreaTextBox.Text == "") || !(emailTextBox.Text == ""))
{
//If all fields are filled in right then we add the object to the List
CorpEmplList.Add(CreateCorpEmployee(nameTextBox.Text, addressTextBox.Text, titleTextBox.Text,
phoneNumberTextBox.Text, serviceAreaTextBox.Text,
Convert.ToInt32(employeeNumTextBox.Text), Convert.ToInt32(roomNumTextBox.Text),
Convert.ToInt32(phoneExtTextBox.Text), emailTextBox.Text));
//Let the user know it was added
MessageBox.Show("Employee was added!");
//Clear fields
ClearAllFields();
}
else
{
MessageBox.Show("All fields must be filled in.");
}
}
else
{
MessageBox.Show("Phone Ext.# should be a number");
}
}
else
{
MessageBox.Show("Check your Room# and try again.");
}
}
else
{
MessageBox.Show("Employee Number Should be a number.");
}
}
//This takes in all the employee fields and returns a contructed object
private CorpEmployee CreateCorpEmployee(String name, String address, String title, String phoneNumber,
String serviceArea, int emplNumber, int roomNumber, int phoneExt, String email)
{
CorpEmployee corpEmpObject = new CorpEmployee(name, address, title, phoneNumber, serviceArea, emplNumber, roomNumber, phoneExt, email);
return corpEmpObject;
}
//This just clears all the fiels
private void ClearAllFields()
{
nameTextBox.Text = "";
addressTextBox.Text = "";
titleTextBox.Text = "";
phoneNumberTextBox.Text = "";
serviceAreaTextBox.Text = "";
employeeNumTextBox.Text = "";
roomNumTextBox.Text = "";
phoneExtTextBox.Text = "";
emailTextBox.Text = "";
}
//This returns the List of CorpEmployees
public List<CorpEmployee> GetList()
{
return CorpEmplList;
}
private void exitButton_Click(object sender, EventArgs e)
{
this.Close();
}
private void clearButton_Click(object sender, EventArgs e)
{
ClearAllFields();
}
private void showButton_Click(object sender, EventArgs e)
{
EmployeeDisplay ed = new EmployeeDisplay();
ed.Show();
}
}
}
在代碼中東歐之後，我想我可能會看到你說的話有關從靜態類，而不是一個對象調用它。有沒有辦法找到編譯器從第一個Form創建的Object的名稱？
它應該是'EmployeeAddition.GetEmpList（）' – sarwar026