首先让我解释一下我的计划以及正在发生的事情。 我的程序使用GSM调制解调器从移动卡读取消息，然后在Marquee中显示消息... 这个错误实际上是随机的，我在一个朋友的迪斯科舞厅测试了这个程序，有时它整晚都在工作而不会崩溃，而其他时候它会一遍又一遍地崩溃...... 所以，有一个类的代码可以完成Marquee（以及它崩溃的地方）：
public class MyPanel : System.Windows.Forms.Panel
{
private LinkedList<string> texto;
private LinkedList<MensagemParaEcra> msgs;
private LinkedList<Label> labels;
private LinkedList<string> msgsRemover = new LinkedList<string>();
private List<Label> labelsRmv = new List<Label>();
private List<Label> labelARemover = new List<Label>();
private Label firstLb;
private Label lastLb;
private Label leftLb;
private Label lastLb3;
private Color color;
private Color backg;
private Font textFont;
private Label lastLb2;
private Screen screen;
private System.Windows.Forms.Timer myTimer = new System.Windows.Forms.Timer();
public MyPanel(Color corLabel, Color back, Font text)
{
this.color = corLabel;
this.backg = back;
this.textFont = text;
this.Width = 4000;
texto = new LinkedList<string>();
msgs = new LinkedList<MensagemParaEcra>();
labels = new LinkedList<Label>();
MouseMove += MyPanel_MouseMove;
this.BackColor = backg;
this.Size = new Size(4000, 69);
this.Refresh();
Screen[] screens = Screen.AllScreens;
screen = Screen.FromControl(BarraSms.getInstance());
}
public void addMensagem(MensagemParaEcra msg) // add a message to be displayed in the monitor
{
Label lbl = new Label();
lbl.Text = (msg.getTexto() + " -");
lbl.ForeColor = color;
lbl.Font = textFont;
lbl.BackColor = backg;
lbl.Visible = true;
lbl.AutoSize = true;
if (labels.Count > 0)
{
lbl.Location = new Point(this.lastLb3.Right, 0);
}
else
{
lbl.Location = new Point(screen.Bounds.Width + 10, 0);
firstLb = lbl;
}
reorderAdd(lastLb3, lbl);
labels.AddLast(lbl);
this.Controls.Add(lbl);
this.Refresh();
this.lastLb3 = lbl;
}
private void reorderAdd(Label ultima, Label lbl) //reorder the list order when the user add a new message
{
var it = labels.OrderBy(x => x.Location.X);
int count;
for (int i = 0; i < labels.Count; i++)
{
if (it.ElementAt(i) == ultima)
{
count = i;
lbl.Location = new Point(ultima.Right, 0);
try
{
if (it.ElementAt(i + 1) != null)
it.ElementAt(i + 1).Location = new Point(lbl.Right, 0);
}catch{
}
for (int a = count+2; a < labels.Count; a++)
{
if(it.ElementAt(a) != null)
it.ElementAt(a).Location = new Point(it.ElementAt(a-1).Right, 0);
}
return;
}
}
}
public void startT()
{
startThread();
}
public void removerMsg(string msg) //remove the message
{
string remover = msg + " -";
Label lb = getMsg(remover);
labels.Remove(lb);
this.Controls.Remove(lb);
this.Refresh();
if(labels.Count >1)
reorder();
}
private Label getMsg(string msg) //method to find a message in the list
{
var node = labels.First;
while (node != null)
{
var nextNode = node.Next;
if (node.Value.Text.Equals(msg))
{
return node.Value;
}
node = nextNode;
}
return null;
}
private void InitializeComponent()
{
this.SuspendLayout();
this.ResumeLayout(false);
}
public void setVelocidade(int ve) { //used to set the interval of the timmer
myTimer.Interval = ve;
}
private void startThread()
{
myTimer.Tick += new EventHandler(timerEvent);
myTimer.Interval = 20;
myTimer.Start();
}
private void MyPanel_MouseMove(object sender, MouseEventArgs e) //used to move the unborded window
{
BarraSms.getInstance().mouseMove(e);
}
[System.Runtime.ExceptionServices.HandleProcessCorruptedStateExceptionsAttribute()] //I found this when I was searching for the error but it didn't help me
private void timerEvent(object sender, EventArgs e)
{
var it4 = labels.OrderBy(x => x.Location.X);
// var it = it4.GetEnumerator();
//while (it.MoveNext())
foreach(Label lb in it4)
{
// Label lb = it.Current; //sometimes it crashes here
if (firstLb == null)
firstLb = lb;
if (lb.Location.X + lb.Width < 0) {
lb.Location = new Point(it4.Last().Right, 0);
}
else
{
lb.Location = new Point(lb.Location.X - 4, lb.Location.Y);
leftLb = lb;
}
lastLb = lb;
}
this.Refresh(); //other times it crashes here
if(labels.Count >2 )
reorder();
}
private void reorder() { //used to reorder my list by the location on the screen
var it2 = labels.OrderBy(x => x.Location.X);
Label orderLb = it2.ElementAt(0);
for (int i = 1; i < labels.Count; i++)
{
it2.ElementAt(i).Location = new Point(orderLb.Right, 0);
orderLb = it2.ElementAt(i);
}
}
public void applyDestaque(string msg) { //its just to highlight a message
Label lb = getMsg(msg + " -");
labels.Find(lb).Value.BackColor = Color.Yellow;
labels.Find(lb).Value.ForeColor = Color.Black;
}
public void removeDestaque(string msg) { // remove the highlight
Label lb = getMsg(msg + " -");
labels.Find(lb).Value.BackColor = backg;
labels.Find(lb).Value.ForeColor = color;
}
internal void addMensagemDestaque(MensagemParaEcra mensagemParaEcra) // add a highlighted message
{
Label lbl = new Label();
lbl.Text = (mensagemParaEcra.getTexto() + " -");
lbl.ForeColor = Color.Black;
lbl.Font = textFont;
lbl.BackColor = Color.Yellow;
lbl.Visible = true;
lbl.AutoSize = true;
if (labels.Count > 0)
{
lbl.Location = new Point(this.lastLb3.Right, 0);
}
else
{
lbl.Location = new Point(screen.Bounds.Width + 10, 0);
firstLb = lbl;
}
reorderAdd(lastLb3, lbl);
labels.AddLast(lbl);
this.Controls.Add(lbl);
this.Refresh();
this.lastLb3 = lbl;
}
}
嗯，那就是......
我一遍又一遍地搜索，但我无法修复它或找到任何解决方案...... 编辑：到目前为止我所做的更改已在我的代码中更新，我评论了我在线程中的行，并添加了你告诉我做的foreach cicle
这是完整的错误：
运行时遇到了致命错误。错误的地址 位于0x5f44a62c处，位于线程0x2040上。错误代码是0xc0000005。 此错误可能是CLR中的错误，也可能是不安全或不可验证的错误 用户代码的一部分。此错误的常见来源包括用户 COM-interop或PInvoke的编组错误，可能会破坏 叠加。
编辑：为谁可以帮我解决这个错误添加了一笔赏金......
答案 0 :(得分：-1)
从documentation开始，您使用的属性需要[SecurityCritical]才能正常工作。来自文档：
The CLR delivers the corrupted process state exception to applicable exception clauses only in methods that have both the HandleProcessCorruptedStateExceptionsAttribute and SecurityCriticalAttribute attributes。
您可以尝试添加[SecurityCritical]属性并捕获方法中的任何异常以记录它们，看看它是否为您提供了更多信息。