我在編程世界很新,我有一些問題。我將不勝感激任何幫助!!沒有超載匹配委託'System.EventHandler'/'System.Windows.Forms.FormClosedEventHandler'
我有一個窗體「FW_Details」,它在從treeView2(8個節點)中選擇一個節點並打開一個按鈕後打開。我想在窗體打開時顯示先前插入的數據,讓用戶修改它,並在關閉時保存已修改的數據(針對每個特定節點)。
呼叫FW_Details從主窗體形成:
foreach (TreeNode node in treeView2.Nodes)
{
if (node.IsSelected)
{
FW_Details fw = new FW_Details(node.Name);
fw.Show();
}
FW_Details包含此:
public partial class FW_Details : Form
{
public FW_Details(string name)
{
switch (name)
{
case "x":
FW_Details_Load(null, null, "x");
break;
case "y":
FW_Details_Load(null, null, "y");
break;
事件:FW_Details_Load
private void FW_Details_Load(object sender, EventArgs e, string mycase)
{
switch (mycase)
{
case "x":
Quellpfad.Text = Properties.Settings.Default.Quellpfad;
Zielpfad.Text = Properties.Settings.Default.Zielpfad;
Schlüsselwort.Text = Properties.Settings.Default.Schlüsselwort;
DateiTyp.Text = Properties.Settings.Default.DateiTyp;
Suchzeit.Text = Properties.Settings.Default.Suchzeit.ToString();
break;
case "y":
Quellpfad.Text = Properties.Settings.Default.Quellpfad;
Zielpfad.Text = Properties.Settings.Default.Zielpfad;
Schlüsselwort.Text = Properties.Settings.Default.Schlüsselwort;
DateiTyp.Text = Properties.Settings.Default.DateiTyp;
Suchzeit.Text = Properties.Settings.Default.Suchzeit.ToString();
break;
事件:FW_Details_FormClosed
private void FW_Details_FormClosed(object sender, FormClosedEventArgs e, string mycase)
{
switch (mycase)
{
case "x":
Properties.Settings.Default.Quellpfad = Quellpfad.Text;
Properties.Settings.Default.Zielpfad = Zielpfad.Text;
Properties.Settings.Default.Schlüsselwort = Schlüsselwort.Text;
Properties.Settings.Default.DateiTyp = DateiTyp.Text;
Properties.Settings.Default.Suchzeit = Convert.ToInt32(Suchzeit.Text);
Properties.Settings.Default.Save();
break;
Q1:我收到2錯誤信息:
Error 1. No overload for 'FW_Details_FormClosed' matches delegate 'System.Windows.Forms.FormClosedEventHandler'
Error 2 No overload for 'FW_Details_Load' matches delegate 'System.EventHandler'
是不是因爲我加了該事件的paramaeter 「字符串mycase」?我怎麼解決這個問題? Q2302。 FW_Details表單載入數據後出現在屏幕上..我希望用戶能夠修改 表單中的參數,然後保存爲每個節點指定的參數......我該怎麼做?我應該在show..but後在主窗體中調用事件FW_Details_FormClosed,但它不被識別
不能添加'串myCase '在你的窗體關閉事件中。而不是使全局變量,然後訪問它 – Rohit 2015-04-02 12:24:17