Basically im trying to save a new password and avatar for my twitter type website.
Any help would be appreciated
My coding is:
string newPasswordString = Server.MapPath("~") + "/App_Data/tuitterUsers.txt";
string[] newPasswordArray = File.ReadAllLines(newPasswordString);
string newString = Server.MapPath("~") + "/App_Data/tuitterUsers.txt";
newString = File.ReadAllText(newString);
string[] newArray = newString.Split(' ');
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; i++)
{
newArray[1] = newPasswordTextBox.Text;
newArray[2] = avatarDropDownList.SelectedValue;
newPasswordArray.Replace(" " + Session["Username"].ToString() + " " + Session["UserPassword"].ToString() + " " + Session["UserAvatarID"].ToString() + " ", " " + Session["Username"].ToString() + " " + newPasswordArray[1] + " " + newPasswordArray[2]);
}
}
string newPasswordString = string.Join(Environment.NewLine, newPasswordArray);
File.WriteAllText(Server.MapPath("~") + "/App_Data/tuitterUsers.txt", newPasswordString);
If I understand your problem correctly you need to move the
File.WriteAllText(Server.MapPath("~") + "/App_Data/tuitterUsers.txt", newPasswordArray);
outside the loop, otherwise you rewrite the file at each loop, but this is not enough, you need also to rebuild the Whole text file
string fileToWrite = string.Join(Environment.NewLine, newPasswordArray);
File.WriteAllText(Server.MapPath("~") + "/App_Data/tuitterUsers.txt", fileToWrite);
EDIT: After the code update and the comment below
The looping is totally wrong as well the rebuilding of the array
string userDataFile = Server.MapPath("~") + "/App_Data/tuitterUsers.txt";
string[] userDataArray = File.ReadAllLines(userDataFile);
for(int x = 0; x < userDataArray.Length; x++)
{
string[] info = userData[x].Split(' ');
if(Session["Username"].ToString() == info[0])
{
userData[x] = string.Join(" ", Session["UserName"].ToString(),
newPasswordTextBox.Text,
avatarDropDownList.SelectedValue.ToString());
break;
}
}
string fileToWrite = string.Join(Environment.NewLine, userDataArray);
File.WriteAllText(Server.MapPath("~") + "/App_Data/tuitterUsers.txt", fileToWrite);
Keep in mind that this works for a limited number of users.
If you are lucky and you site becomes the new Twitter, you cannot think to use a solution where you read in memory the names of all your users.
Firstly, what you're doing is A Bad Idea™. Given that a web server can have multiple threads in operation, you can't be certain that two threads aren't going to be writing different data at the same time. The more users you have the larger your user file will be, which means it takes longer to read and write the data, which makes it more likely that two threads will come into conflict.
This is why we use databases for things like this. Instead of operating on the whole file every time you want to read or write, you operate on a single record. There are plenty of other reasons to do it to.
That said, if you insist on using a text file...
If you treat each line in the file as a record - a single user's details in this case - then it makes sense to build a class to handle the content of those records, and make that class able to read and write the line format.
Something like this:
class UserRecord
{
public string Name;
public string Password;
public string Avatar;
public UserRecord(string name, string password, string avatar)
{
Name = name;
Password = password;
Avatar = avatar;
}
// static factory method
public static UserRecord Parse(string source)
{
if (string.IsNullOrEmpty(source))
return null;
string[] parts = source.Split(',');
if (parts.Length < 3)
return null;
return new UserRecord(parts[0], parts[1], parts[2]);
}
// convert to string
public string ToString()
{
return (new string[] { Name, Password, Avatar }).Join(",");
}
}
Adjust the Parse method to handle whatever format you're using for the data in the line, and change the ToString method to produce that format.
Once you have that working, use it to parse the contents of your file like this:
// Somewhere to put the data - a Dictionary is my first choice here
Dictionary<string, UserRecord> users = new Dictionary<string, UserRecord>();
// Don't forget to use 'using' where appropriate
using (TextReader userfile = File.OpenText(userDataFile))
{
string srcline;
while ((srcline = userfile.ReadLine()) != null)
{
UserRecord user = UserRecord.Parse(line);
if (user != null)
users[user.Name] = user;
}
}
Then you can access the user's data by username, manipulate it as required, and save it back out whenever you like.
Writing the data back out from a Dictionary of users is as simple as:
StringBuilder sb = new StringBuilder;
foreach (UserRecord user in users.Values)
{
sb.AppendFormat("{0}\n", user);
}
File.WriteAllText(userDataFile, sb.ToString());
Meanwhile, you have a users collection that you can save for future checks and manipulations.
I still think you should use a database though. They're not hard to learn and they are far better for this sort of thing.
Related
I make an application that must be able to process and store a lot of measurements.
There can be up to 129600 measurements and every measurement can have 1499 values.
All data is stored in an array, each column is a measurement.
After 10 measurements I save the data from the array to a file. Because if the application crashes, then i haven't lost all data.
In the beginning of the measurements, saving to the file only takes a few millieseconds. But when i am at measurement 200, it already takes 13 seconds. The time to save to the file keeps increasing. This makes sense, of course, because the array is getting bigger.
I can choose to only save every 50 or 100 measurements. But saving to the file will still take a long time.
Below you can see what the data in the file looks like:
Frequency(Hz);S21(dB)_1;S21(dB)_2
10000000;-42.87726786;-35.66746585
79950000;-60.5887682;-63.55421833
149900000;-84.56555597;-74.36793049
219850000;-76.71335093;-80.68063652
289800000;-68.96360042;-68.41861962
359750000;-71.24272337;-74.90287556
429700000;-78.65528362;-75.50614099
...
...
13860100000;-85.80839142;-84.03051407
13930050000;-79.31238317;-82.87468675
14000000000;-88.9003575;-75.48071161
Is there a possibility to work in a different way, In such way that it takes less time to save?
The code below converts the array to a large string.
measurementArrayToSave is a 2D array where each measurement data is added.
private string StringToSave() // Create a large string from the array.
{
// Create a file to write to.
string writeToFile = "";
writeToFile = writeToFile + "Frequency(Hz)"; // Title is depending on the number of measurements.
for (int titles = 0; titles < (numberOfMeasurements); titles++)
{
writeToFile = writeToFile + ";S21(dB)_" + (titles + 1).ToString() + " ";
}
writeToFile = writeToFile + ";Average" + "\n";
for (int i = 0; i < (Points + 1); i++) // write array with measurements to string
{
int column = 0;
if (i == Points)
{
writeToFile = writeToFile + "Average"; // Set name "Average" on the last line
column = 1;
}
for (; column < (numberOfMeasurements + 2); column++)
{
if (column == 0)
{
writeToFile = writeToFile + measurementArrayToSave[column, i].ToString().Replace(",", ".");
}
else
{
writeToFile = writeToFile + ";" + measurementArrayToSave[column, i].ToString().Replace(",", ".");
}
}
writeToFile = writeToFile + "\n";
}
return writeToFile;
}
The code below save the string to a file.
private void SaveMeasurementStirrerAutomatic() // automatic save without dialogBox
{
// Full name will depend on date and time.
string path = #"..\\measurementFiles\\" + textBoxName.Text +"_"+ thisDay.ToString("yyyy_MM_dd_HH_mm_ss") + ".txt";
if (File.Exists(path))
{
File.Delete(path);
}
string writeToFile = StringToSave(); // call StringToSave()
File.WriteAllText(path, writeToFile); // write string to file.
labelStatus.Invoke((MethodInvoker)delegate { labelStatus.Text = "Data is saved!"; });
}
Take a look at File.AppendText method:
// This text is always added, making the file longer over time
// if it is not deleted.
using (StreamWriter sw = File.AppendText(path))
{
sw.WriteLine("This");
sw.WriteLine("is Extra");
sw.WriteLine("Text");
}
#techgirl2000 you are probably using the entire history on every single "Save" operation.
You better use that in-memory array as a temporary buffer. i.e. the data in-memory should be "appended" to the file, AND cleared once the save is successful.
private void SaveMeasurementStirrerAutomatic() // automatic save without dialogBox
{
// Full name will depend on date and time.
string path = #"..\\measurementFiles\\" + textBoxName.Text +"_"+ thisDay.ToString("yyyy_MM_dd_HH_mm_ss") + ".txt";
// Create the file, only if needed
if (!File.Exists(path))
{
string headers = HeadersToSave(); // Get the first line (Headers)
File.WriteAllText(path, headers); // write string to file.
}
// append new lines
string writeToFile = StringToSave(); // call StringToSave()
using (StreamWriter sw = File.AppendText(path))
{
sw.Write(writeToFile); // not sure about this
}
//TODO: clear the array in memory
labelStatus.Invoke((MethodInvoker)delegate { labelStatus.Text = "Data is saved!"; });
}
Now you need to split the StringToSave() into another function with only the header line
private string HeadersToSave() // Create a large string from the array.
{
// Create a file to write to.
string writeToFile = "Frequency(Hz)"; // Title is depending on the number of measurements.
for (int titles = 0; titles < (numberOfMeasurements); titles++)
{
writeToFile = writeToFile + ";S21(dB)_" + (titles + 1).ToString() + " ";
}
writeToFile = writeToFile + ";Average" + "\n";
return writeToFile;
}
// ...
If you can't clear the data, then use a marker on every row to confirm if that specific line was appended.
Struggling with a C# Component. What I am trying to do is take a column that is ntext in my input source which is delimited with pipes, and then write the array to a text file. When I run my component my output looks like this:
DealerID,StockNumber,Option
161552,P1427,Microsoft.SqlServer.Dts.Pipeline.BlobColumn
Ive been working with the GetBlobData method and im struggling with it. Any help with be greatly appreciated! Here is the full script:
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
string vehicleoptionsdelimited = Row.Options.ToString();
//string OptionBlob = Row.Options.GetBlobData(int ;
//string vehicleoptionsdelimited = System.Text.Encoding.GetEncoding(Row.Options.ColumnInfo.CodePage).GetChars(OptionBlob);
string[] option = vehicleoptionsdelimited.Split('|');
string path = #"C:\Users\User\Desktop\Local_DS_CSVs\";
string[] headerline =
{
"DealerID" + "," + "StockNumber" + "," + "Option"
};
System.IO.File.WriteAllLines(path + "OptionInput.txt", headerline);
using (System.IO.StreamWriter file = new System.IO.StreamWriter(path + "OptionInput.txt", true))
{
foreach (string s in option)
{
file.WriteLine(Row.DealerID.ToString() + "," + Row.StockNumber.ToString() + "," + s);
}
}
Try using
BlobToString(Row.Options)
using this function:
private string BlobToString(BlobColumn blob)
{
string result = "";
try
{
if (blob != null)
{
result = System.Text.Encoding.Unicode.GetString(blob.GetBlobData(0, Convert.ToInt32(blob.Length)));
}
}
catch (Exception ex)
{
result = ex.Message;
}
return result;
}
Adapted from:
http://mscrmtech.com/201001257/converting-microsoftsqlserverdtspipelineblobcolumn-to-string-in-ssis-using-c
Another very easy solution to this problem, because it is a total PITA, is to route the error output to a derived column component and cast your blob data to a to a STR or WSTR as a new column.
Route the output of that to your script component and the data will come in as an additional column on the pipeline ready for you to parse.
This will probably only work if your data is less than 8000 characters long.
I want to write a string next to a line, randomly could be any line, also I want to know how to delete a line from it, here is how my StreamReader works:
using (StreamReader sb = new StreamReader("admin.txt"))
{
string[] ffoo = File.ReadAllLines("admin.txt");
string[] ppoof = ffoo[0].Split(';');
string line;
while ((line = sb.ReadLine()) != null)
{
if (line.StartsWith("#" + Server.Name.ToLower() + ": "))
{
string[] punch = line.Split(';');
if (!punch.Contains(Channel.Name.ToLower()))
{
StringBuilder str = new StringBuilder("admin.txt");
str.Append(Channel.Name.ToLower() + ";");
return;
}
}
}
Here is how the list is made:
#main: alien;nobody;somebody;
#devs: headdev;wae;
It reads it fine just it can't write something next to main channel, I mean I can only write a line or a string next to end of it which is on dev, and I want to write something on main, also I have some problems on how to delete an admin from main or dev. also this file would be oversize, maybe includes 500 lines at all after we use it, so please if you can give a solution for big files, thanks!
When calling StringBuilder.Append it appends to the end of the string.
When calling the StringBuilder(string) constructor it will append to the string passed as parameter for the constructor.
In this case you are passing "Admin.txt" as a string, but you really want to pass the content of Admin.txt, so you need to read the content of it.
This should do the trick:
string[] lines = File.ReadAllLines("admin.txt");
for (int i = 0; i < lines.Length; i++)
{
if (lines[i].StartsWith(string.Format("#{0}: ", Server.Name.ToLower()))
{
if (!lines[i].Split(';').Contains(Channel.Name.ToLower()))
lines[i] += ";" + Channel.Name.ToLower();
}
}
File.WriteAllLines("admin.txt", lines);
I'm sorry if I misunderstood what you wanted to do though.
My program currently reads a text file and compares it with the value in a text box and then tells me how many matches, this currently works.
My query is that it is case sensitive. Is there any way to make it so it doesn't matter whether it is in upper or lower case?
This is my code below:
if (!String.IsNullOrEmpty(CustodianEAddress.Text))
{
for (AddressLength1 = 0; AddressLength1 < Length; AddressLength1++)
{
List<string> list1 = new List<string>();
using (StreamReader reader = new StreamReader(FileLocation))
{
string line1;
//max 500
string[] LineArray1 = new string[500];
while ((line1 = reader.ReadLine()) != null)
{
list1.Add(line1); // Add to list.
if (line1.IndexOf(cust1[AddressLength1].ToString()) != -1)
{
count1++;
LineArray1[count1] = line1;
}
}
reader.Close();
using (System.IO.StreamWriter filed =
new System.IO.StreamWriter(FileLocation, true))
{
filed.WriteLine("");
filed.WriteLine("The email address " +
cust1[AddressLength1].ToString() + " was found " + count1 +
" times within the recipient's inbox");
}
string count1a;
count1a = count1.ToString();
}
}
}
else
{
MessageBox.Show("Please Enter an Email Address");
}
So basically, I need to compare the value in cust1[AddressLength1] with any values found in an array which is in the text file.
String.Compare() takes in an optional parameter that let's you specify whether or not the equality check should be case sensitive.
Edited in response to code being posted
Compare and Index of both take in an optional enumeration, StringComparison. If you choose StringComparison.OrdinalIgnoreCase then case will be ignored.
Here's a quick way to compare two strings without checking case:
string a;
string b;
string.Compare(a, b, true);
The true here is passed as the value of the ignoreCase parameter, meaning that upper and lower-case letters will be compared as if they were all the same case.
EDIT:
I've cleaned up your code a bit, and also put in the compare function. I included comments where I changed stuff:
// Not needed: see below. List<string> list1 = new List<string>();
using (StreamReader reader = new StreamReader(FileLocation))
{
string line1;
//max 500
List<string> LineArray1 = new List<string>();
while ((line1 = reader.ReadLine()) != null)
{
// list1.Add(line1); // Add to list.
// By adding to the list, then searching it, you are searching the whole list for every single new line - you're searching through the same elements multiple times.
if (string.Compare(line1, cust1[AddressLength1].ToString(), true) == 0)
{
// You can just use LineArray1.Count for this instead. count1++;
LineArray1.Add(line1);
}
}
// Not needed: using() takes care of this. reader.Close();
using (System.IO.StreamWriter filed =
new System.IO.StreamWriter(FileLocation, true))
{
filed.WriteLine(); // You don't need an empty string for a newline.
filed.WriteLine("The email address " +
cust1[AddressLength1].ToString() + " was found " + LineArray1.Count +
" times within the recipient's inbox");
}
string count1a;
count1a = LineArray1.Count.ToString();
}
The fact you are reading from a file or not it does not matter, when compare
use the static string Comapare function:
public static int Compare(
string strA,
string strB,
bool ignoreCase
)
and pass true as a last parameter.
I have a windows service , that takes files with metadata(FIDEF) and corresponding video file and , translates the XML(FIDEF) using XSLT .
I get the file directory listing for FIDEF's and if a video file of the same name exists it translates it. That works ok , but it is on a timer to search every minute. I am trying to handle situations where the same file name enters the input directory but is already in the output directory. I just have it changing the output name to (copy) thus if another file enters i should get (copy)(copy).mov but the service won't start with filenames of the same directory already in the output , it works once and then does not seem to pick up any new files.
Any Help would be great as I have tried a few things with no good results. I believe its the renaming methods, but I've put most of the code up in case its a clean up issue or something else.
(forgive some of the names just trying different things).
private void getFileList()
{
//Get FILE LIST FROM Directory
try
{
// Process Each String/File In Directory
string result;
//string filename;
filepaths = null;
filepaths = Directory.GetFiles(path, Filetype);
foreach (string s in filepaths)
{
for (int i = 0; i < filepaths.Length; i++)
{
//Result Returns Video Name
result = Path.GetFileNameWithoutExtension(filepaths[i]);
FileInfo f = new FileInfo(filepaths[i]);
PreformTranslation(f, outputPath + result , result);
}
}
}
catch (Exception e)
{
EventLog.WriteEntry("Error " + e);
}
}
private void MoveVideoFiles(String Input, String Output)
{
File.Move(Input, Output);
}
private string GetUniqueName(string name)
{
//Original Filename
String ValidName = name;
//remove FIDEF from filename
String Justname1 = Path.GetFileNameWithoutExtension(name);
//get .mov extension
String Extension2 = Path.GetExtension(Justname1);
//get filename with NO extensions
String Justname = Path.GetFileNameWithoutExtension(Justname1);
//get .Fidef
String Extension = Path.GetExtension(name);
int cnt = 0;
//string[] FileName = Justname.Split('(');
//string Name = FileName[0];
while (File.Exists(ValidName)==true)
{
ValidName = outputPath + Justname + "(Copy)" + Extension2 + Extension;
cnt++;
}
return ValidName;
}
private string getMovFile(string name)
{
String ValidName = name;
String Ext = Path.GetExtension(name);
String JustName = Path.GetFileNameWithoutExtension(name);
while(File.Exists(ValidName))
{
ValidName = outputPath + JustName + "(Copy)" + Ext;
}
return ValidName;
}
//Preforms the translation requires XSL & FIDEF name.
private void PreformTranslation(FileInfo FileName, String OutputFileName , String result)
{
string FidefName = OutputFileName + ".FIDEF";
String CopyName;
String copyVidName = outputPath + result;
XslCompiledTransform myXslTransform;
myXslTransform = new XslCompiledTransform();
try
{
myXslTransform.Load(XSLname);
}
catch
{
EventLog.WriteEntry("Error in loading XSL");
}
try
{ //only process FIDEF's with corresponding Video file
if (AllFidef == "no")
{
//Check if video exists if yes,
if (File.Exists(path + result))
{
//Check for FIDEF File Already Existing in the Output Directory.
if (File.Exists(FidefName))
{
//Get unique name
CopyName = GetUniqueName(FidefName);
copyVidName= getMovFile(copyVidName);
//Translate and create new FIDEF.
//double checking the file is here
if (File.Exists(outputPath + result))
{
myXslTransform.Transform(FileName.ToString(), CopyName);
File.Delete(FileName.ToString());
MoveVideoFiles(path + result, copyVidName);
}
////Move Video file with Corresponding Name.
}
else
{ //If no duplicate file exsists in Directory just move.
myXslTransform.Transform(FileName.ToString(), OutputFileName + ".FIDEF");
MoveVideoFiles(path + result, outputPath + result);
}
}
}
else
{
//Must have FIDEF extension
//Processes All FIDEFS and moves any video files if found.
myXslTransform.Transform(FileName.ToString(), OutputFileName + ".FIDEF");
if (File.Exists(path + result))
{
MoveVideoFiles(path + result, outputPath + result);
}
}
}
catch (Exception e)
{
EventLog.WriteEntry("Error Transforming " + "FILENAME = " + FileName.ToString()
+ " OUTPUT_FILENAME = " + OutputFileName + "\r\n" +"\r\n"+ e);
}
}
There is a lot wrong with your code. getFileList has the unneeded inner for loop for starters. Get rid of it. Your foreach loop has s, which can replace filepaths[i] from your for loop. Also, don't do outputPath + result to make file paths. Use Path.Combine(outputPath, result) instead, since Path.Combine handles directory characters for you. Also, you need to come up with a better name for getFileList, since that is not what the method does at all. Do not make your method names liars.
I would simply get rid of MoveVideoFiles. The compiler just might too.
GetUniqueName only works if your file name is of the form name.mov.fidef, which I'm assuming it is. You really need better variable names though, otherwise it will be a maintenance nightware later on. I would get rid of the == true in the while loop condition, but that is optional. The assignment inside the while is why your files get overwritten. You always generate the same name (something(Copy).mov.fidef), and as far as I can see, if the file exists, I think you blow the stack looping forever. You need to fix that loop to generate a new name (and don't forget Path.Combine). Maybe something like this (note this is untested):
int copyCount = 0;
while (File.Exists(ValidName))
{
const string CopyName = "(Copy)";
string copyString = copyCount == 0 ? CopyName : (CopyName + "(" + copyCount + ")");
string tempName = Justname + copyString + Extension2 + Extension;
ValidName = Path.Combine(outputPath, tempName);
copyCount++;
}
This generates something(Copy).mov.fidef for the first copy, something(Copy)(2).mov.fidef for the second, and so on. Maybe not what you want, but you can make adjustments.
At this point you have a lot to do. getMovFile looks as though it could use work in the same manner as GetUniqueName. You'll figure it out. Good luck.