[Solved] [Code] Streams and text files

2015-05-10 09:40:06

Read DarkDragon's replies

madiik · 2015-05-10 09:45:14

Make a list to an array. Add context by WriteAllText or WriteAllLines.

OPEN stream with,

System.IO.StreamWrite fs = new System.IO.StreamWriter()

Don't forget to dispose (1) and close (2) after you are done.

2015-05-10 09:51:26

madiik wrote:

Make a list to an array. Add context by WriteAllText or WriteAllLines.
OPEN stream with,
System.IO.StreamWrite fs = new System.IO.StreamWriter()
Don't forget to dispose (1) and close (2) after you are done.

What do you mean by "open" steam?

Extra:
How do you convert a list into an array?

How do you do File.WriteAllLines() to an array?

den3107 · 2015-05-10 10:49:58

alkazam1448 wrote:

▼Hidden text
madiik wrote:
Make a list to an array. Add context by WriteAllText or WriteAllLines.
OPEN stream with,
System.IO.StreamWrite fs = new System.IO.StreamWriter()
Don't forget to dispose (1) and close (2) after you are done.
What do you mean by "open" steam?
Extra:
How do you convert a list into an array?
How do you do File.WriteAllLines() to an array?

Opening a stream means that you can send data through (on phone, but I think by doing: streamName.Write(File))

I would appreciate if you actually tried looking yourself, since list to array conversion is literally:
Array = List.toArray()

Again thinking for yourself would be nice.
If you would like the textfile to be readable you should first print the size of the array, then loop through each element of the array, print each element and done.
Reading would be first reading the size and then looping the size amount of times to get all elements again without reading elements that are not part of the array.
If the textfile isn't meant to be read you can just do:
File.Write(Array)
You might need to add .toString() to the array name.

P.S. @madiik I don't see why you should covert the List to an Array.

2015-05-10 11:10:42

ListBox, not list

DarkDragon4900 · 2015-05-10 11:13:39

You don't need to close and dispose.
Closing is enough.
Close()'s code is

public override void Close()
{
    this.Dispose(true);
    GC.SuppressFinalize(this);
}

in the streamwriter,
and

public override void Close()
{
    this.Dispose(true);
}

in the streamreader.
And you don't need to call any of them if you wrap it in a 'using'.

You can save items by writing lines and reading them line by line when loading.
You can create a method of yours that makes it easier.

Dictionary<string, string> d = new Dictionary<string, string>();
d.Add("email", "[email protected]");
d.Add("pass", "*****");
d.Add("wid", "PW...");

Save(Application.StartupPath + @"\data.txt", d);
Dictionary<string, string> loadedDictionary = new Dictionary<string, string>();
Load(Application.StartupPath + @"\data.txt", out loadedDictionary);
tbEmail.Text = loadedDictionary["email"];
tbPass.Text = loadedDictionary["pass"];
tbWid.Text = loadedDictionary["wid"];

public void Save(string path, Dictionary<string, string> d)
{
    using (System.IO.StreamWriter w = new System.IO.StreamWriter(path))
    {
        foreach (KeyValuePair<string, string> kv in d)
        {
            w.WriteLine(kv.Key + ":" + kv.Value);
        }
    }
}

public void Load(string path, out Dictionary<string, string> d)
{
    Dictionary<string, string> dd = new Dictionary<string, string>();
    using (System.IO.StreamReader r = new System.IO.StreamReader(path))
    {
        string line = "";
        while ((line = r.ReadLine()) != null)
        {
            dd.Add(line.Split(':')[0], line.Split(':')[1]);
        }
    }
    d = dd;
}

2015-05-10 11:33:23

DarkDragon4900 wrote:

You don't need to close and dispose.
Closing is enough.
Close()'s code is
public override void Close()
{
    this.Dispose(true);
    GC.SuppressFinalize(this);
}
in the streamwriter,
and
public override void Close()
{
    this.Dispose(true);
}
in the streamreader.
And you don't need to call any of them if you wrap it in a 'using'.
You can save items by writing lines and reading them line by line when loading.
You can create a method of yours that makes it easier.

Dictionary<string, string> d = new Dictionary<string, string>();
d.Add("email", "[email protected]");
d.Add("pass", "*****");
d.Add("wid", "PW...");
Save(Application.StartupPath + @"\data.txt", d);
Dictionary<string, string> loadedDictionary = new Dictionary<string, string>();
Load(Application.StartupPath + @"\data.txt", out loadedDictionary);
tbEmail.Text = loadedDictionary["email"];
tbPass.Text = loadedDictionary["pass"];
tbWid.Text = loadedDictionary["wid"];
public void Save(string path, Dictionary<string, string> d)
{
using (System.IO.StreamWriter w = new System.IO.StreamWriter(path))
{
foreach (KeyValuePair<string, string> kv in d)
{
w.WriteLine(kv.Key + ":" + kv.Value);
}
}
}
public void Load(string path, out Dictionary<string, string> d)
{
Dictionary<string, string> dd = new Dictionary<string, string>();
using (System.IO.StreamReader r = new System.IO.StreamReader(path))
{
string line = "";
while ((line = r.ReadLine()) != null)
{
dd.Add(line.Split(':')[0], line.Split(':')[1]);
}
}
d = dd;
}

Thanks, DarkDragon! Also, any ideas on how to save items in a ListBox and load them?

DarkDragon4900 · 2015-05-10 11:41:55

alkazam1448 wrote:

▼"quote"
DarkDragon4900 wrote:
You don't need to close and dispose.
Closing is enough.
Close()'s code is
public override void Close()
{
    this.Dispose(true);
    GC.SuppressFinalize(this);
}
in the streamwriter,
and
public override void Close()
{
    this.Dispose(true);
}
in the streamreader.
And you don't need to call any of them if you wrap it in a 'using'.
You can save items by writing lines and reading them line by line when loading.
You can create a method of yours that makes it easier.

Dictionary<string, string> d = new Dictionary<string, string>();
d.Add("email", "[email protected]");
d.Add("pass", "*****");
d.Add("wid", "PW...");
Save(Application.StartupPath + @"\data.txt", d);
Dictionary<string, string> loadedDictionary = new Dictionary<string, string>();
Load(Application.StartupPath + @"\data.txt", out loadedDictionary);
tbEmail.Text = loadedDictionary["email"];
tbPass.Text = loadedDictionary["pass"];
tbWid.Text = loadedDictionary["wid"];
public void Save(string path, Dictionary<string, string> d)
{
using (System.IO.StreamWriter w = new System.IO.StreamWriter(path))
{
foreach (KeyValuePair<string, string> kv in d)
{
w.WriteLine(kv.Key + ":" + kv.Value);
}
}
}
public void Load(string path, out Dictionary<string, string> d)
{
Dictionary<string, string> dd = new Dictionary<string, string>();
using (System.IO.StreamReader r = new System.IO.StreamReader(path))
{
string line = "";
while ((line = r.ReadLine()) != null)
{
dd.Add(line.Split(':')[0], line.Split(':')[1]);
}
}
d = dd;
}
Thanks, DarkDragon! Also, any ideas on how to save items in a ListBox and load them?

You can modify the methods to suit your needs.

public void Save(string path, ListBox l)
{
    using (System.IO.StreamWriter w = new System.IO.StreamWriter(path))
    {
        foreach (var item in l.Items)
        {
            w.WriteLine(item.ToString());
        }
    }
}

public void Load(string path, out ListBox l)
{
    ListBox ll = new ListBox();
    using (System.IO.StreamReader r = new System.IO.StreamReader(path))
    {
        string line = "";
        while ((line = r.ReadLine()) != null)
        {
            ll.Items.Add(line);
        }
    }
    l = ll;
}

And it seems you're having trouble hiding text.
Use

[spoiler="Spoiler Text Here"]Spoiler Content Here.[/spoiler]

To produce

▼"Spoiler Text Here"

2015-05-10 11:44:36

Thanks man you are the best. Can't imagine what would've happened to my broken ugly code without your intervention. Thank you.

DarkDragon4900 · 2015-05-10 11:45:28

Np :p

madiik · 2015-05-10 19:36:11

The fact that Visual Studio even warns you about .Close(), it says you should dispose first, then close.

It's safer.

DarkDragon4900 · 2015-05-11 11:08:55

It isn't.
Since close obviously executes the Dispose method.

Dispose():
"Releases all resources used by the System.IO.Text(writer/reader) object."

Close():
"Closes the System.IO.Stream(Writer/Reader) object and the underlying stream, and releases any system resources associated with the reader."
Besides, no warnings show up when you use the Close() method.

[Edit] Read about it in stackoverflow.

Hexagon · 2015-05-11 11:46:39

madiik wrote:

The fact that Visual Studio even warns you about .Close(), it says you should dispose first, then close.

Calling Dispose() will do close() then Dispose() if close is already called.

If you Dispose() it will close() then if you try to close() you'll get an exception.

DarkDragon4900

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#1 2015-05-10 09:40:06, last edited by 1448 (2015-05-10 12:18:51)

[Solved] [Code] Streams and text files

#2 2015-05-10 09:45:14

Re: [Solved] [Code] Streams and text files

#3 2015-05-10 09:51:26, last edited by 1448 (2015-05-10 09:53:16)

Re: [Solved] [Code] Streams and text files

#4 2015-05-10 10:49:58

Re: [Solved] [Code] Streams and text files

#5 2015-05-10 11:10:42

Re: [Solved] [Code] Streams and text files

#6 2015-05-10 11:13:39

Re: [Solved] [Code] Streams and text files

#7 2015-05-10 11:33:23

Re: [Solved] [Code] Streams and text files

#8 2015-05-10 11:41:55, last edited by DarkDragon4900 (2015-05-10 11:44:24)

Re: [Solved] [Code] Streams and text files

#9 2015-05-10 11:44:36

Re: [Solved] [Code] Streams and text files

#10 2015-05-10 11:45:28

Re: [Solved] [Code] Streams and text files

#11 2015-05-10 19:36:11

Re: [Solved] [Code] Streams and text files

#12 2015-05-11 11:08:55, last edited by DarkDragon4900 (2015-05-11 11:21:24)

Re: [Solved] [Code] Streams and text files

#13 2015-05-11 11:46:39

Re: [Solved] [Code] Streams and text files

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