我是这个社区的新手。我有一个问题:我遵循了这个如何保存在 Windows 窗体中运行时创建的控件并且代码运行良好,但是当我想从 stringCollection 中删除一个字符串时我遇到了问题。我使用方法 stringcollection.Remove("string") 插入了一个刚刚存储的有效字符串,并且我还使用 settings.default.save() 保存了所有内容,但该字符串并未从字符串集合中删除。为什么它不起作用?请有人帮助我!:)
这是我的代码:
public Form1()
{
InitializeComponent();
if (Properties.Settings.Default.StringCollection == null)
Properties.Settings.Default.StringCollection = new System.Collections.Specialized.StringCollection();
}
private void make_BookButtonAndStore(int x, int y, string name)
{
make_Book(x, y, name);
Properties.Settings.Default.StringCollection.Add(String.Format("{0};{1};{2}", book1.Location.X, book1.Location.Y, book1.Name));
Properties.Settings.Default.Save();
}
private void make_Book(int x, int y, string name)
{
// this code is initializing the book(button)
book1 = new Button();
//Image img = button1.Image;
//book1.Image = img;
book1.Name = name;
//book1.Height = img.Height;
//book1.Width = img.Width;
book1.Location = new Point(44 + x, 19 + y);
book1.MouseDown += new MouseEventHandler(book1_MouseDown);
book1.MouseMove += new MouseEventHandler(book1_MouseMove);
book1.MouseUp += new MouseEventHandler(book1_MouseUp);
groupBox1.Controls.Add(book1);
}
void book1_MouseDown(object sender, MouseEventArgs e)
{
activeControl = sender as Control;
previousLocation = e.Location;
Cursor = Cursors.Hand;
}
void book1_MouseMove(object sender, MouseEventArgs e)
{
if (activeControl == null || activeControl != sender)
return;
var location = activeControl.Location;
location.Offset(e.Location.X - previousLocation.X, e.Location.Y - previousLocation.Y);
activeControl.Location = location;
}
void book1_MouseUp(object sender, MouseEventArgs e)
{
activeControl = null;
Cursor = Cursors.Default;
Button btnPremuto = (Button)sender;
Properties.Settings.Default.StringCollection.Remove(previousLocation.X+";"+previousLocation.Y+";"+btnPremuto.Name);
Properties.Settings.Default.StringCollection.Add(String.Format("{0};{1};{2}", btnPremuto.Location.X, btnPremuto.Location.Y, btnPremuto.Name));
Properties.Settings.Default.Save();
}
private void Form1_Load(object sender, EventArgs e)
{
foreach (string line in Properties.Settings.Default.StringCollection)
{
if (!String.IsNullOrWhiteSpace(line))
{
// The line will be in format x;y;name
string[] parts = line.Split(';');
if (parts.Length >= 3)
{
int x = Convert.ToInt32(parts[0]);
int y = Convert.ToInt32(parts[1]);
make_Book(x, y, parts[2]);
}
}
}
}