我已经在.Net中构建了一个托盘应用程序,它运行良好。然而,用户希望在某些条件下在运行时更改托盘图标图像。简单来说,如果某些东西不工作,托盘图标应该显示红色图像;如果一切正常,它应该显示绿色。我不确定如何在.Net中实现这一点。
请提供一些关于此的输入。谢谢。
我为托盘构建了CustomApplicationContent。以下是一些片段:
Program.cs
请提供一些关于此的输入。谢谢。
我为托盘构建了CustomApplicationContent。以下是一些片段:
Program.cs
[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;
}
我应该在哪里添加计时器 - 在上下文中吗?因为用户可能不会打开表单,所以在表单上添加计时器可能并不总是有效。我如何改变图标?