我在.Net中构建了一个托盘应用程序,工作正常。但是,用户希望在某些条件下在运行时更改“托盘图标”图像。为了简单起见,让我们说,有些东西不起作用 - 托盘图标应显示红色图像;如果一切都很好,它应该显示绿色。我不知道如何在.Net中实现这一目标。
请提供一些意见。感谢
我为Tray构建了CustomApplicationContent。下面的一些片段:
Program.cs的
[STAThread]
static void Main()
{
if (!SingleInstance.Start()) { return; }
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
try
{
var applicationContext = new CustomApplicationContext();
Application.Run(applicationContext);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Program Terminated Unexpectedly",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
SingleInstance.Stop();
}
CustomApplicationContext.cs
public class CustomApplicationContext : ApplicationContext
{
private System.ComponentModel.IContainer components; // a list of components to dispose when the context is disposed
private NotifyIcon notifyIcon;
private static readonly string IconFileName = "green.ico";
private static readonly string DefaultTooltip = "Employee Management System";
private readonly TrayManager trayManager;
public CustomApplicationContext()
{
InitializeContext();
trayManager = new TrayManager(notifyIcon);
}
protected override void Dispose(bool disposing)
{
if (disposing && components != null) { components.Dispose(); }
}
private void InitializeContext()
{
components = new System.ComponentModel.Container();
notifyIcon = new NotifyIcon(components)
{
ContextMenuStrip = new ContextMenuStrip(),
Icon = new Icon(IconFileName),
Text = DefaultTooltip,
Visible = true
};
notifyIcon.ContextMenuStrip.Opening += ContextMenuStrip_Opening;
notifyIcon.DoubleClick += notifyIcon_DoubleClick;
//notifyIcon.MouseUp += notifyIcon_MouseUp;
}
private void notifyIcon_DoubleClick(object sender, EventArgs e)
{
ShowAboutForm();
}
private TestForm testForm;
private void ShowAboutForm()
{
if (testForm == null)
{
testForm = new TestForm { trayManager = trayManager };
testForm.Closed += testForm_Closed; ; // avoid reshowing a disposed form
testForm.Show();
}
else { testForm.Activate(); }
}
void testForm_Closed(object sender, EventArgs e)
{
testForm = null;
}
在哪里添加计时器 - 在上下文中?用户可能无法打开表单,因此在表单上添加计时器可能无法一直运行。如何更改图标?
答案 0 :(得分:12)
您可以向项目的 Resource.resx 文件添加2个图标,Red.ico和Green.ico,并在不同情况下以这种方式使用它们:
this.notifyIcon1.Icon = Properties.Resources.Red;
或
this.notifyIcon1.Icon = Properties.Resources.Green;
要向Resourse.resx
添加图标,请从项目的Resources.resx
文件夹中打开Properties
。然后从设计器工具栏的第一个下拉列表中选择Icons
,然后从下一个下拉列表选择Add Existing File...
并添加您的图标文件。您也可以在这里重命名项目。
答案 1 :(得分:6)
我将您的图标嵌入资源,然后使用这样的代码在运行时更改当前显示的图标:
notifyIcon.Icon = new Icon(this.GetType(), "red.ico");