这个GetCount和Process是我自己写的方法，基本原理用来读取一个到达时间数组time，这个数组每秒更新一次，计算后更新灰度值数组，画出对应灰度图。但发现time的Intever设置1s时候一处理数据UI就会卡顿，在网上查应该在UI主线程外另加个新线程，那在这里就是开个新线程跑这两个自己写的数据处理方法？具体还需不需要考虑线程同步之类的问题,怎么改改才好呢
private void DataAna_Click(object sender, EventArgs e)
{
try
{
if (DataAna.Text == "Image")
{
pixel.Initialize();
greyValue.Initialize();
greyValue = new int[32, 32];
String s = Interaction.InputBox("请输入成像时间", " ", "单位s", -1, -1);
if (!String.IsNullOrEmpty(s))
{
time = Convert.ToInt16(s);
}
// this.result.Text = s;
DataAna.Text = "Stop";
timer2.Start();
}
else if (DataAna.Text == "Stop")
{
DataAna.Text = "Image";
timer2.Stop();
Process();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void timer2_Tick(object sender, EventArgs e)
{
try
{
if (ttInterface != null && ttInterface.IsOpen())
{
if (time != 0)
{
time--;
}
GetCount();
Process();
if (time == 0)
{
DataAna.Text = "Image";
timer2.Stop();
MessageBox.Show("灰度图像已完成");
}
}
}
catch (Exception ex)
{
richTextBox1.AppendText(ex.Message + "\n");
}
}
List<TempChannel> channelLst = new List<TempChannel>();
private void GetCount()
{
channelLst.Clear();
byte[] channels;
//time数组就是要读取的数组，长度1000左右，每1s更新一次
long[] times;
// 把计数差小于某个值的两个通道看作是一个像元的响应
for (int i = 0; i < 100; i++)
{
for (int j = i + 1; j < 100; j++)
{
if (Math.Abs(times[i] - times[j]) < 10000 )
{
int min = Math.Min(channels[j], channels[i]);
int max = Math.Max(channels[i], channels[j]);
if (max > 32 && min < 33)
{
//chanel保存像元响应的行列位置
TempChannel channel = new TempChannel();
channel.channeli = min;
channel.channelj = max;
channelLst.Add(channel);
}
}
}
}
//像素单元序号
foreach (var item in channelLst)
{
pixel[item.channeli-1, item.channelj - 33]++;
}
}
private void Process()
{
pictureBox1.Image.Dispose();
pictureBox1.Image = null;
richTextBox2.Clear();
int max = 0;
int min = 100000;
foreach (var num in pixel)
{
if (num > max)
{
max = num;
}
if (num < min)
{
min = num;
}
}
for (int i = 0; i <= 31; i++)
{
for (int j = 0; j <= 31 ;j++)
{
if (pixel[i,j] != 0)
{
int num = i * 32 + j + 1;
richTextBox2.AppendText("第" + i+1 + "行 第" +j+1 +"列像元的计数为" + pixel[i,j]+" ");
}
double index = 1000*(pixel[i, j] - min) / (max - min);
greyValue[i,j] = 255 -(int) index * 255/1000;
////显示
Bitmap bmp = new Bitmap(32, 32);
for (int i = 0; i < 32; i++)
{
for (int j = 0; j < 32; j++)
{
int col = greyValue[j,i];
Color pix = Color.FromArgb(col,col,col);
bmp.SetPixel(i, j, pix);
}
}
Bitmap bitmapOld = pictureBox1.Image as Bitmap;
pictureBox1.Image = bmp;
pictureBox1.Visible = true;
pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
if (bitmapOld != null)
{
bitmapOld.Dispose();
}
}
Timer执行的代码和UI同一个线程，如果长时间执行UI会假死。而用Thread和UI线程分开的，所以执行长时间任务不会导致UI假死，但是要访问UI中控件需要用代理，直接访问会报错，Timer则可以直接访问UI中控件。
所以不想UI假死，直接启动个线程，不要用Timer。主要是改动访问UI控件时，判断从其他线程中访问需要用代理，下面这种结构
if (this.InvokeRequired)
this.Invoke(new Action(() => {
//访问UI控件的代码
}));
大概下面这种结构。
System.Threading.Thread thread;
private void DataAna_Click(object sender, EventArgs e)
{
try
{
if (DataAna.Text == "Image")
{
pixel.Initialize();
greyValue.Initialize();
greyValue = new int[32, 32];
String s = Interaction.InputBox("请输入成像时间", " ", "单位s", -1, -1);
if (!String.IsNullOrEmpty(s))
{
time = Convert.ToInt16(s);
}
// this.result.Text = s;
DataAna.Text = "Stop";
// timer2.Start();
thread = new System.Threading.Thread(()=> {
try
{
if (ttInterface != null && ttInterface.IsOpen())
{
if (time != 0)
{
time--;
}
GetCount();
Process();
if (time == 0)
{
this.Invoke(new Action(()=> {
DataAna.Text = "Image";
//timer2.Stop();
MessageBox.Show("灰度图像已完成");
}));
}
}
}
catch (Exception ex)
{
richTextBox1.AppendText(ex.Message + "\n");
}
});
thread.Start();
}
else if (DataAna.Text == "Stop")
{
DataAna.Text = "Image";
// timer2.Stop();
thread.Abort();
Process();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void timer2_Tick(object sender, EventArgs e)
{
try
{
if (ttInterface != null && ttInterface.IsOpen())
{
if (time != 0)
{
time--;
}
GetCount();
Process();
if (time == 0)
{
DataAna.Text = "Image";
timer2.Stop();
MessageBox.Show("灰度图像已完成");
}
}
}
catch (Exception ex)
{
richTextBox1.AppendText(ex.Message + "\n");
}
}
List<TempChannel> channelLst = new List<TempChannel>();
private void GetCount()
{
channelLst.Clear();
byte[] channels;
//time数组就是要读取的数组，长度1000左右，每1s更新一次
long[] times;
// 把计数差小于某个值的两个通道看作是一个像元的响应
for (int i = 0; i < 100; i++)
{
for (int j = i + 1; j < 100; j++)
{
if (Math.Abs(times[i] - times[j]) < 10000)
{
int min = Math.Min(channels[j], channels[i]);
int max = Math.Max(channels[i], channels[j]);
if (max > 32 && min < 33)
{
//chanel保存像元响应的行列位置
TempChannel channel = new TempChannel();
channel.channeli = min;
channel.channelj = max;
channelLst.Add(channel);
}
}
}
}
//像素单元序号
foreach (var item in channelLst)
{
pixel[item.channeli - 1, item.channelj - 33]++;
}
}
private void Process()
{
if (this.InvokeRequired)
this.Invoke(new Action(() => {
pictureBox1.Image.Dispose();
pictureBox1.Image = null;
richTextBox2.Clear();
}));
int max = 0;
int min = 100000;
foreach (var num in pixel)
{
if (num > max)
{
max = num;
}
if (num < min)
{
min = num;
}
}
for (int i = 0; i <= 31; i++)
{
for (int j = 0; j <= 31; j++)
{
if (pixel[i, j] != 0)
{
int num = i * 32 + j + 1;
richTextBox2.AppendText("第" + i + 1 + "行 第" + j + 1 + "列像元的计数为" + pixel[i, j] + " ");
}
double index = 1000 * (pixel[i, j] - min) / (max - min);
greyValue[i, j] = 255 - (int)index * 255 / 1000;
////显示
Bitmap bmp = new Bitmap(32, 32);
for (int i = 0; i < 32; i++)
{
for (int j = 0; j < 32; j++)
{
int col = greyValue[j, i];
Color pix = Color.FromArgb(col, col, col);
bmp.SetPixel(i, j, pix);
}
}
if (this.InvokeRequired) this.Invoke(new Action(() => {
Bitmap bitmapOld = pictureBox1.Image as Bitmap;
pictureBox1.Image = bmp;
pictureBox1.Visible = true;
pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
if (bitmapOld != null)
{
bitmapOld.Dispose();
}
}));
}
}
}