我想写入和读取相同的文本文件。但是，我遇到了“该进程无法访问“ XXX.txt”，因为它正在被另一个进程使用”的问题。
我创建了两个类A和B，并以主要形式为每个类定义了两个对象。
A类将数据写入文本文件，而B类将同时从文本文件读取数据。
我已经将B类放在计时器中，而单击按钮时A类将开始。
A级：-
private void Processdata(string indata)
{
//======================================[TCP/IP]=====================================================//
using (StreamWriter sw = new StreamWriter(TCPfilename, true))
{
var time = DateTime.Now;
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
sw.WriteLine(formattedTime + "\t" + indata);
}
// Regular Expression for WIFI Drone & Phantom 3 Drone
Regex regexp3_1 = new Regex(@"^AH(60601F740D70)(-\d{0,2})");
Regex regexp3_2 = new Regex(@"^AH(60601F415CAF)(-\d{0,2})");
Regex regexp3_3 = new Regex(@"^AH(60601F078D3E)(-\d{0,2})");
Regex regexp3 = new Regex(@"^AH(60601F(\S{0,6}))(-\d{0,2})");
Regex regexP3 = new Regex(@"^GGP3(\S{0,8})");
Regex regexPA = new Regex(@"^AH(A0143D\S{0,6})(-\d{0,2})");
Regex regex3D = new Regex(@"^AH(8ADC96\S{0,6})(-\d{0,2})");
Regex regexMA = new Regex(@"^AH(60601F93F3FB)(-\d{0,2})");
Regex regexMP = new Regex(@"^AH(60601F33729E)(-\d{0,2})");
Regex regexTL = new Regex(@"^AH(60601FD8A1EF)(-\d{0,2})");
// Regular Expression for WIFI
Regex regexAH = new Regex(@"^AH(\S{0,12})(-\d{0,2})");
Regex regexAH2 = new Regex(@"^AH(\S{0,12})(-\d{0,2})\S{0,6}(\S{0,74})");
// Match WIFI Drone & Phantom 3 Drone Data with Regular Expression
Match matchp3_1 = regexp3_1.Match(indata);
Match matchp3_2 = regexp3_2.Match(indata);
Match matchp3_3 = regexp3_3.Match(indata);
Match matchp3 = regexp3.Match(indata);
Match matchP3 = regexP3.Match(indata);
Match matchPA = regexPA.Match(indata);
Match match3D = regex3D.Match(indata);
Match matchMA = regexMA.Match(indata);
Match matchMP = regexMP.Match(indata);
Match matchTL = regexTL.Match(indata);
// Match WIFI Data with Regular Expression
Match matchAH = regexAH.Match(indata);
Match matchAH2 = regexAH2.Match(indata);
using (StreamWriter rssi = new StreamWriter(TCPRSSIfilename, true))
{
var time = DateTime.Now;
// Parrot
if (matchPA.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-Parrot" + "; " + matchPA.Groups[1].Value.ToString() + "; " + matchPA.Groups[0].Value.ToString() + "; " + matchPA.Groups[2].Value.ToString());
rssi.Flush();
}
// 3DR
else if (match3D.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-3DR_Solo" + "; " + match3D.Groups[1].Value.ToString() + "; " + match3D.Groups[0].Value.ToString() + "; " + match3D.Groups[2].Value.ToString());
rssi.Flush();
}
// Mavic Air
else if (matchMA.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-Mavic_Air" + "; " + matchMA.Groups[1].Value.ToString() + "; " + matchMA.Groups[0].Value.ToString() + "; " + matchMA.Groups[2].Value.ToString());
rssi.Flush();
}
// Mavic Pro
else if (matchMP.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-Mavic_Pro" + "; " + matchMP.Groups[1].Value.ToString() + "; " + matchMP.Groups[0].Value.ToString() + "; " + matchMP.Groups[2].Value.ToString());
rssi.Flush();
}
// Tello
else if (matchTL.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-Tello" + "; " + matchTL.Groups[1].Value.ToString() + "; " + matchTL.Groups[0].Value.ToString() + "; " + matchTL.Groups[2].Value.ToString());
rssi.Flush();
}
// Specific Phantom 3 (MAC : 740D70)
else if (matchp3_1.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-DJI_Phantom_3_STD" + "; " + matchp3_1.Groups[1].Value.ToString() + "; " + matchp3_1.Groups[0].Value.ToString() + "; " + matchp3_1.Groups[2].Value.ToString());
rssi.Flush();
}
// Specific Phantom 3 (MAC : 415CAF)
else if (matchp3_2.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-DJI_Phantom_3_STD" + "; " + matchp3_2.Groups[1].Value.ToString() + "; " + matchp3_2.Groups[0].Value.ToString() + "; " + matchp3_2.Groups[2].Value.ToString());
rssi.Flush();
}
// Specific Phantom 3 (MAC : 078D3E)
else if (matchp3_3.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-DJI_Phantom_3_STD" + "; " + matchp3_3.Groups[1].Value.ToString() + "; " + matchp3_3.Groups[0].Value.ToString() + "; " + matchp3_3.Groups[2].Value.ToString());
rssi.Flush();
}
// General Phantom 3
else if (matchp3.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Drone-DJI_Phantom_3_STD" + "; " + matchp3.Groups[1].Value.ToString() + "; " + matchp3.Groups[0].Value.ToString() + "; " + matchp3.Groups[2].Value.ToString());
rssi.Flush();
}
// WIFI
else if (matchAH.Success && matchAH2.Success)
{
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
rssi.WriteLine(formattedTime + "; " + "Wifi -" + matchAH2.Groups[3].Value.ToString() + "; " + matchAH.Groups[1].Value.ToString() + "; " + matchAH.Groups[0].Value.ToString() + "; " + matchAH.Groups[2].Value.ToString());
rssi.Flush();
}
}
}
B类：-
public void DisplayOnDataGridView(DataGridView dl, GMapControl gmap, string TCPRSSIfile, string UDPRSSIfile)
{
//================================[TCP/IP]==================================================//
using (StreamReader streamReader = new StreamReader(TCPRSSIfile, true))
{
string line = String.Empty;
while ((line = streamReader.ReadLine()) != null)
{
Regex Search = new Regex(@"^(\S+ \S+); (\S+ -)(\S+); (\S+); (\S+); (\S+)");
Match matchSearch = Search.Match(line);
var time = DateTime.Now;
string formattedTime = time.ToString("yyyy/MM/dd HH:mm:ss");
StringBuilder sb = new StringBuilder();
if (matchSearch.Groups[3].Value.ToString() != null)
{
for (int i = 0; i <= matchSearch.Groups[3].Value.ToString().Length - 2; i += 2)
{
//Convert Hex format to standard ASCII string
sb.Append(Convert.ToString(Convert.ToChar(Int32.Parse(matchSearch.Groups[3].Value.ToString().Substring(i, 2), System.Globalization.NumberStyles.HexNumber))));
}
}
StringBuilder sbwifi = new StringBuilder(sb.Length);
foreach (char c in sb.ToString())
{
if ((int)c > 127) // 127 = Delete
continue;
if ((int)c < 32) // 1-31 = Control Character
continue;
if (c == ',')
continue;
if (c == '"')
continue;
sbwifi.Append(c);
}
Regex wifi = new Regex(@"^(\S+)\$");
Match matchwifi = wifi.Match(sbwifi.ToString());
if (matchwifi.Success)
{
sbwifi.Clear();
sbwifi.Append(matchwifi.Groups[1].Value.ToString());
}
if (matchSearch.Success)
{
try
{
if (dl.Rows.Count == 0)
{
if (matchSearch.Groups[2].Value.ToString().Contains("Wifi"))
{
using (StreamWriter rssi = new StreamWriter(@"D:\Skydroner\SearchReport.txt", true))
{
string DroneNameNoEmptySpace = matchSearch.Groups[2].Value.ToString().Replace(" ", String.Empty) + sbwifi.ToString().Replace(" ", String.Empty);
string DroneIDNoEmptySpace = matchSearch.Groups[4].Value.ToString().Replace(" ", String.Empty);
rssi.WriteLine(formattedTime + " " + DroneNameNoEmptySpace + " " + DroneIDNoEmptySpace + " Detected");
}
string[] newlist = new string[] { matchSearch.Groups[2].Value.ToString() + " " + sbwifi.ToString(), matchSearch.Groups[4].Value.ToString(), matchSearch.Groups[1].Value.ToString(), "Add", "Distract", "", "" };
dl.Rows.Add(newlist);
dl.Rows[rownumber].Cells["Inject"].Style.BackColor = Color.DarkGray;
//DetectedZone(gmap, false);
Image img = Image.FromFile(@"D:\Image\no_status.PNG");
dl.Rows[rownumber].Cells["DroneStatus"].Value = img;
}
else
{
string[] newlist = new string[] { matchSearch.Groups[3].Value.ToString(), matchSearch.Groups[4].Value.ToString(), matchSearch.Groups[1].Value.ToString(), "Add", "Distract", "", "" };
dl.Rows.Add(newlist);
dl.Rows[rownumber].Cells["Inject"].Style.BackColor = Color.LightGreen;
//DetectedZone(gmap, true);
Image img = Image.FromFile(@"D:\Image\no_status.PNG");
dl.Rows[rownumber].Cells["DroneStatus"].Value = img;
}
dl.Rows[rownumber].Cells["Whitelist"].Style.BackColor = Color.LightGray;
RSSI_Signal(dl, matchSearch.Groups[6].Value.ToString(), rownumber);
rownumber = rownumber + 1;
}
else
{
for (int row = 0; row < dl.Rows.Count; row++)
{
if (dl.Rows[row].Cells["DroneID"].Value.ToString() == matchSearch.Groups[4].Value.ToString())
{
if (matchSearch.Groups[2].Value.ToString().Contains("Wifi") == false)
{
Image img1 = Image.FromFile(@"D:\Image\alert.PNG");
if (dl.Rows[row].Cells["DroneStatus"].Value != img1)
{
dl.Rows[row].Cells["DroneStatus"].Value = img1;
}
}
dl.Rows[row].Cells["TimeDetected"].Value = matchSearch.Groups[1].Value.ToString();
RSSI_Signal(dl, matchSearch.Groups[6].Value.ToString(), rownumber);
duplicate = true;
}
}
if (!duplicate)
{
if (matchSearch.Groups[2].Value.ToString().Contains("Wifi"))
{
using (StreamWriter rssi = new StreamWriter(@"D:\Skydroner\SearchReport.txt", true))
{
string DroneNameNoEmptySpace = matchSearch.Groups[2].Value.ToString().Replace(" ", String.Empty) + sbwifi.ToString().Replace(" ", String.Empty);
string DroneIDNoEmptySpace = matchSearch.Groups[4].Value.ToString().Replace(" ", String.Empty);
rssi.WriteLine(formattedTime + " " + DroneNameNoEmptySpace + " " + DroneIDNoEmptySpace + " Detected");
}
string[] newlist = new string[] { matchSearch.Groups[2].Value.ToString() + " " + sbwifi.ToString(), matchSearch.Groups[4].Value.ToString(), matchSearch.Groups[1].Value.ToString(), "Add", "Distract", "", "" };
dl.Rows.Add(newlist);
dl.Rows[rownumber].Cells["Inject"].Style.BackColor = Color.DarkGray;
//DetectedZone(gmap, false);
Image img = Image.FromFile(@"D:\Image\no_status.PNG");
dl.Rows[rownumber].Cells["DroneStatus"].Value = img;
}
else
{
string[] newlist = new string[] { matchSearch.Groups[3].Value.ToString(), matchSearch.Groups[4].Value.ToString(), matchSearch.Groups[1].Value.ToString(), "Add", "Distract", "", "" };
dl.Rows.Add(newlist);
dl.Rows[rownumber].Cells["Inject"].Style.BackColor = Color.LightGreen;
//DetectedZone(gmap, true);
Image img = Image.FromFile(@"D:\Image\no_status.PNG");
dl.Rows[rownumber].Cells["DroneStatus"].Value = img;
}
dl.Rows[rownumber].Cells["Whitelist"].Style.BackColor = Color.LightGray;
RSSI_Signal(dl, matchSearch.Groups[6].Value.ToString(), rownumber);
rownumber = rownumber + 1;
}
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
else
{
// Do Nothing
}
}
}
//========================================[UDP]===================================================//
using (StreamReader streamReader = new StreamReader(UDPRSSIfile))
{
string line = String.Empty;
while ((line = streamReader.ReadLine()) != null)
{
Regex Search = new Regex(@"^(\S+ \S+); (\S+); (\S+); (\S+); (\S+)");
Match matchSearch = Search.Match(line);
if (matchSearch.Success)
{
try
{
//if (matchSearch.Groups[4].Value.ToString() != "0.000000")
//{
string[] newlist = new string[] { matchSearch.Groups[2].Value.ToString(), matchSearch.Groups[3].Value.ToString(), matchSearch.Groups[1].Value.ToString(), "Add", "Distract", "", "" };
dl.Rows.Add(newlist);
//}
dl.Rows[rownumber].Cells["Whitelist"].Style.BackColor = Color.LightGray;
if (dl.Rows[rownumber].Cells["DroneType"].Value.ToString().Contains("Wifi"))
{
dl.Rows[rownumber].Cells["Inject"].Style.BackColor = Color.DarkGray;
DetectedZone(gmap, false);
}
else
{
dl.Rows[rownumber].Cells["Inject"].Style.BackColor = Color.LightGreen;
DetectedZone(gmap, true);
}
Image img = Image.FromFile(@"D:\Image\arrow.jpg");
dl.Rows[rownumber].Cells["DroneStatus"].Value = img;
RSSI_Signal(dl, matchSearch.Groups[5].Value.ToString(), rownumber);
rownumber = rownumber + 1;
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
else
{
// Do Nothing
}
}
}
// Add Number for Each DataGridView Row
if (null != dl)
{
foreach (DataGridViewRow r in dl.Rows)
{
dl.Rows[r.Index].HeaderCell.Value = (r.Index + 1).ToString();
}
}
}
主要形式：-
// ========呼叫类别A对象============== //
private void button2_Click(object sender, EventArgs e)
{
// TCP/IP Address - Debug TCP Text File - Debug UDP Text File - UDP Port Number - TCP/IP RSSI Text File - UDP RSSI Text File
ListeningPole lp1 = new ListeningPole();
lp1.PortConnect("192.168.1.133", @"D:\Skydroner\SkyDroner_DebugTCP_1.txt", @"D:\Skydroner\SkyDroner_DebugUDP_1.txt", 61557, @"D:\Skydroner\SkyDroner_TCP_RSSI_1.txt", @"D:\Skydroner\SkyDroner_UDP_RSSI_1.txt");
}
// ========运行B类对象的计时器============== //
private void MainForm_Load(object sender, EventArgs e)
{
// Start Timer for Display Scroll Mouse Message
RowCountTimer.Interval = 1000;
RowCountTimer.Start();
}
private void RowCountTimer_Tick(object sender, EventArgs e)
{
Display dp1 = new Display();
dp1.DisplayOnDataGridView(DroneList, gmap, @"D:\Skydroner\SkyDroner_TCP_RSSI_1.txt", @"D:\Skydroner\SkyDroner_UDP_RSSI_1.txt");
}
任何人都可以解决此错误。
请帮助。
谢谢。
答案 0 :(得分：1)
在阅读之前，请确保在编写器上调用Close()将其关闭。我曾见过这样的实例，即与编写者一起使用using块可能无法及时关闭它，以使读者无法读取它。