Just putzing about with C# and need some advice. | Tech Off

BenZilla

My noobness has caught up with me Wink

Just trying to read a txt file stream and then put it in a multiline textbox. Here's some sample code Big Smile

Stream myStream;
//open filedialog stuff.
openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";

if ((myStream = openFileDialog1.OpenFile()) != null)
                {
                    string sPythonString = Convert.ToString(myStream);

                    txtInputScript.Text = sPythonString;
                }

So i'm thinking, great Wink

But when I open up the text file this is all I get is this in the textbox.

System.IO.FileStream

Yggdrasil
Pour me a cab, 'cause I can't drink no more.

BenZilla wrote:
My noobness has caught up with me

Just trying to read a txt file stream and then put it in a multiline textbox. Here's some sample code

Stream myStream;
//open filedialog stuff.
openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";

if ((myStream = openFileDialog1.OpenFile()) != null)
                {
                    string sPythonString = Convert.ToString(myStream);

                    txtInputScript.Text = sPythonString;
                }

So i'm thinking, great But when I open up the text file this is all I get is this in the textbox.

System.IO.FileStream

A stream is not a string - it's a wrapper object around a stream of data, and as such you can't just cast it to a string. Convert.ToString() is the equivalent of calling myStream.ToString(), which (for most objects) simply returns the type name for lack of anything better.

What you need to do is read the text from the stream. Simplest way (in Framework v1.1) is this:

<BR>using (StreamReader reader = new StreamReader(myStream))<BR>{<BR>   string sPythonString = reader.ReadToEnd();<BR>   txtInputScript.Text = sPythonString;<BR>}

To make things even simpler, you can simply pass the path to the file directly to the StreamReader constructor and have it implicitly create a FileStream.

In .NET 2.0 it's even simpler - ridiculously so, in fact:

<BR>string sPythonString = System.IO.File.ReadAllText(fileName);<BR>

BenZilla

Thanks for that Cool

Maybe I'll use this topic to ask questions to stop me spamming up the board Big Smile

I was about to ask about SaveFile, but worked out that I needed to close the stream before writing the data otherwise it throws an error about the file already being written to.

BenZilla

I know

And I used the opposite function to write into the file Cool

BenZilla

Okey, so i've come back for more advice Big Smile

What are C#'s equivalent to <vector>? So I can groooooow my arrays.

And also, let's say I have a command line application(non .net) how would I catch out puts from it? For example.

(don't really need to capture this, because my program will be the 1 outputting to the command line)
application -file example.exe -contentsoffile

File01.exe 45KB value3
File02.exe 10KB value2
File03.exe 100KB value1

And so forth.

Thanks for your time.

Yggdrasil
Pour me a cab, 'cause I can't drink no more.

BenZilla wrote:
What are C#'s equivalent to <vector>? So I can groooooow my arrays.

In .NET 1.1 - use an ArrayList. In .NET 2.0 you can use a strongly-typed generics - List<int>.

I'm not sure about the List<>, but an ArrayList can be easily converted to a standard array once you've finished adding to it. Always best to expose strongly typed arrays with public interfaces. Exposing an arraylist is icky.

BenZilla wrote:

And also, let's say I have a command line application(non .net) how would I catch out puts from it?

Use the System.Diagnostics.ProcessStartInfo class to define the process properties, including redirecting the standard output to a stream. The you use System.Diagnostics.Process.Start() to launch it, and access the stream to get the process' output.

BenZilla

Great info, it's good because I don't really know what any of the class names are, so when you give me a hint I can either search MSDN or just "feel" my way through it Big Smile

Thank's.

Yggdrasil
Pour me a cab, 'cause I can't drink no more.

BenZilla wrote:
Great info, it's good because I don't really know what any of the class names are, so when you give me a hint I can either search MSDN or just "feel" my way through it

Thank's.

Glad to help.
Thousands of classes and interfaces scattered around the framework. Once you have the names you can guess your way around with Intellisense, and use MSDN to validate your guesses. Best way to learn.

BenZilla

So I've been working with ProcessStartInfo, and I have run up against a problem(due to my lack of knowledge of how to deal with this error"

So here's how i'm calling it.

ProcessStartInfo pi = new ProcessStartInfo("bspzip.exe -dir ", sMapLocation );

So when I get to that code it throws a "file not found" error, I think it's because of the -dir, If I pass it something hardcoded like:

ProcessStartInfo pi = new ProcessStartInfo("bspzip.exe ", "-dir C:\\rawrz\\map\\map.file" );

It works, any ideas?

Maurits
AKA Matthew van Eerde

How about

new ProcessStartInfo("bspzip.exe", "-dir " + sMapLocation );

BenZilla

Great stuff guys, I've been slogging along and run up 2 something else.

            DataGridViewRowCollection rows = this.dtgFileToAdd.Rows;

            int rowNumber = 1;
            foreach (DataGridViewRow row in rows)
            {
                if (row.IsNewRow) continue;
                System.IO.File.WriteAllText("temp1.txt", row.Cells.(what?) );
                rowNumber = rowNumber + 1;
            }

I need to get the current rows Value, but there is nothing that lends it's name to that(unless I completly missed it Tongue Out

)

Maurits
AKA Matthew van Eerde

DataGridViewRow article

For Each SelectedRow As DataGridViewRow In _
  DataGridView1.SelectedRows
    MessageBox.Show( _
      SelectedRow.Cells("CustomerID").Value)
Next

You probably want something like row.Cells("something").Value

BenZilla

Great stuff, I did it like this(I had .value before but it was just throwing errors)

string cellValue = dtgFileToAdd.Rows[rowNumber].Cells[cellNumber].Value.ToString();

Ok, heres a new questions Wink

How do I force a new line? As you cans ee I have this piece of code.

System.IO.File.WriteAllText("temp.txt", cellValue);

Just put's all the text on the first line.

System.IO.File.WriteAllText("temp.txt", cellValue + "\n");

Does not work Wink

JohnAskew
9 girl in pink sweater

Yggdrasil wrote:

In .NET 2.0 it's even simpler - ridiculously so, in fact:

string sPythonString = System.IO.File.ReadAllText(fileName);

That's awesome.

Sven Groot
My name has 9 letters. Coincidence? I think not...

BenZilla wrote:
Great stuff, I did it like this(I had .value before but it was just throwing errors)

string cellValue = dtgFileToAdd.Rows[rowNumber].Cells[cellNumber].Value.ToString();

Ok, heres a new questions How do I force a new line? As you cans ee I have this piece of code.

System.IO.File.WriteAllText("temp.txt", cellValue);

Just put's all the text on the first line.

System.IO.File.WriteAllText("temp.txt", cellValue + "\n");

Does not work

Try this:
System.IO.File.WriteAllText("temp.txt", cellValue + Environment.NewLine);

BenZilla

Thanks Sven, that would probably work, but it's currently in a foreach loop so it just overwrites the line again.

foreach (DataGridViewRow row in rows)
            {
                if (row.IsNewRow) continue;

                string cellValue = dtgFileToAdd.Rows[rowNumber].Cells[cellNumber].Value.ToString();
                row.HeaderCell.Value = "Row " + rowNumber;
                System.IO.File.WriteAllText("temp1.txt", cellValue + Environment.NewLine);

                rowNumber = rowNumber + 1;
            }
I think what's happening is that it's not "remembering" that it's meant to be on a new line when it goes back through the foreach loop.

Hrmmmmm.

Sven Groot
My name has 9 letters. Coincidence? I think not...

If you're writing more than one line to a file, don't use WriteAllText, since this opens and closes the file every time which is a performance overhead, and indeed overwrites the file, it does not append to it.

You could first create the entire file contents as a string and then write that to a file using WriteAllText, but it's better to use the StreamWriter class instead:

using( System.IO.StreamWriter writer = new System.IO.StreamWriter("temp1.txt") )<BR>{<BR>  foreach (DataGridViewRow row in rows)<BR>  {<BR>     if (row.IsNewRow) continue;<BR><BR>     string cellValue = dtgFileToAdd.Rows[rowNumber].Cells[cellNumber].Value.ToString();<BR>     row.HeaderCell.Value = "Row " + rowNumber;<BR>     writer.WriteLine(cellValue);<BR><BR>     rowNumber = rowNumber + 1;<BR>  }<BR>}

BenZilla

Thanks Sven, I'm so close to my first C# program!

I've got a couple of harder problems laying ahead of me, and as with all these problems I'm going to try all the paths before I ask here for help Smiley

BenZilla

string sVTFFileExtension = ".vtf";

if (cellValue.EndsWith(sVTFFileExtension))
{
MessageBox.Show("yay");
}

Hrmmm, why is this not working? It thinks that every file ends with .vtf

Sven Groot
My name has 9 letters. Coincidence? I think not...

Without seeing the contents of cellValue it's hard to say.

BenZilla

Ok, now this is really weird.

using (System.IO.StreamWriter writer = new System.IO.StreamWriter("fFilesToAdd.txt"))
            {
                foreach (DataGridViewRow row in rows)
                {
                    if (row.IsNewRow) continue;
                    //Add what currently is in the cell to a variable converted to a string.
                    string cellValue = dtgFileToAdd.Rows[rowNumber].Cells[cellNumber].Value.ToString();
                    //if .vmt or .vtf is present in the file name, add it to relative path
                    //materials/*whateverishere*/filename.vmt/vtf

                    string sVTFFileExtension = ".vtf";
                    string sMaterialFolder = "/materials/";
                    string sNewMaterialFileLocation;

                    if (cellValue.EndsWith(sVTFFileExtension))
                    {
                        MessageBox.Show("yay");
                    }

                    writer.WriteLine(cellValue);

                    rowNumber = rowNumber + 1;
                }
            writer.WriteLine("");
            }

So all well and good, I can add for example .randomfile but when I add a .vtf it somehow "changes" cell value to be the .vtf file added, but it still writes the correct line to the text file, for example.

C:\Documents and Settings\\My Documents\Visual Studio 2005\Projects\SourceED\SourceED\bin\Debug\Microsoft.DirectX.dll
C:\Documents and Settings\My Documents\Visual Studio 2005\Projects\SourceED\SourceED\bin\Debug\New Text Document.vtf
C:\Documents and Settings\\My Documents\Visual Studio 2005\Projects\SourceED\SourceED\bin\Debug\SourceED.exe
C:\Documents and Settings\\My Documents\Visual Studio 2005\Projects\SourceED\SourceED\bin\Debug\SourceED.pdb
C:\Documents and Settings\\My Documents\Visual Studio 2005\Projects\SourceED\SourceED\bin\Debug\SourceED.vshost.exe
C:\Documents and Settings\\My Documents\Visual Studio 2005\Projects\SourceED\SourceED\bin\Debug\temp1.txt

After the .vtf file shows up, it make cellValue into that VTF file. Very weird.

BenZilla

Bump

Maurits
AKA Matthew van Eerde

Something's missing here. Are you copying and pasting the code exactly as you have it? Did you try stepping through it and inspecting the value of cellValue prior to the EndsWith call?

BenZilla

This is ALL the code for that function.
private void btnContentToAdd_Click(object sender, EventArgs e)
        {

OpenFileDialog ofd = new OpenFileDialog();

            ofd.InitialDirectory = "C:\\Steam\\SteamApps\\benosp\\sourcesdk\\bin"; // Need use %sourcesdk%
            ofd.Filter = "BSP files (*.bsp)|*.bsp|All files (*.*)|*.*";
            ofd.FilterIndex = 2;
            ofd.RestoreDirectory = true;
            ofd.Multiselect = true;
            // Put the value of filename into the text box.

            DataGridViewRowCollection rows = this.dtgFileToAdd.Rows;

            if (ofd.ShowDialog() == DialogResult.OK)
            {
                foreach (string sFiles in ofd.FileNames)
                {
                    rows.Add(sFiles);
                }
            }

            int rowNumber = 0;
            int cellNumber = 0;

            using (System.IO.StreamWriter writer = new System.IO.StreamWriter("fFilesToAdd.txt"))
            {
                foreach (DataGridViewRow row in rows)
                {
                    if (row.IsNewRow) continue;
                    //Add what currently is in the cell to a variable converted to a string.
                    string cellValue = dtgFileToAdd.Rows[rowNumber].Cells[cellNumber].Value.ToString();
                    //if .vmt or .vtf is present in the file name, add it to relative path
                    //materials/*whateverishere*/filename.vmt/vtf

                    string sVTFFileExtension = ".vtf";
                    string sMaterialFolder = "/materials/";
                    string sNewMaterialFileLocation;

                    if (cellValue.EndsWith(sVTFFileExtension))
                    {
                        MessageBox.Show("yay");
                    }

                    writer.WriteLine(cellValue);

                    rowNumber = rowNumber + 1;
                }
            writer.WriteLine("");
            }

        }

I have tried debugging, but it just overwrites the value just before the if statement, and I can't seem to work out why :\

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