Re: Search Data from File in FIle2 - C# Discussion Boards

Re: How to access String from within whole application...

14-May-09 3:44

If you both declare and instantiate any field inside a code block, it cannot be accessed from outside that block.
Solution, move the declaration to be a field of the class.

Instead of

private void MyForm_Load(object sender, EventArgs e)
{
          string myString = "Fred";
          ..........
          ..........
          ..........
        }

use

        private string myString;
private void MyForm_Load(object sender, EventArgs e)
{
          myString = "Fred";
          ..........
          ..........
          ..........
        }

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

Baeltazor14-May-09 3:48

Baeltazor

14-May-09 3:48

Oh, silly me... Looks like I need to buy another book on C#. I've been trying to do this for a few weeks now but too embarrassed to ask about it until now lol. Thank you for the quick and helpful reply Mr. Henry Minute.

regards,
jay.

Search Data from File in FIle2

MumbleB14-May-09 3:32

MumbleB

14-May-09 3:32

Hi Guys. I have been pulling out the last hair on my head with this one.

I have two files, one with a list of numbers and another file containing more data. I want to take the data from file 1 and use that to search file2 for the same value and out put another value from file1 to a new file. I have now tried numerous ways of writing this and it just doesn't work. Below is a snippet of my code. The foreach statement doesn't work and if I run it without the foreach statement it only reads the first line of file 1 and doesn't continue to the next line.

while (!sr1.EndOfStream)
{
    holdLineHid = sr1.ReadLine();
    holdLineNot = sr.ReadToEnd();
        if (String.IsNullOrEmpty(holdLineHid) || String.IsNullOrEmpty(holdLineNot))
            continue;
        string hid1 = holdLineHid.Substring(0, 11);
        string newhid = holdLineHid.Substring(14, 11);
        string hid2 = holdLineNot.Substring(0, 11);
        string notremainder = holdLineNot.Substring(11, 683).Trim();
        foreach (String hid in holdLineHid)
        {
            if (hid1 == hid2)
            {
                sw.WriteLine(newhid + notremainder);
            }

For instance:
In File1 I have the following:

<br />
C0000000001   C0000013456<br />
C0000000002   C0003245678<br />

In File2 I have the following data:

<br />
C0000000003N      Y     Trem    Chat<br />
C0000000005Y      C     Just    Data<br />
C0000000001N      D     This    Must Match<br />

How do I get this to run properly?

Thanks in advance.

Excellence is doing ordinary things extraordinarily well.

stancrm14-May-09 3:37

stancrm

14-May-09 3:37

The easiest way is too read the file using :
string[] lines = File.ReadAllLines(@"c:\myfile.txt");

Then just use:
foreach(string line in lines)
{
//... do what you want here...
}

MumbleB14-May-09 3:54

MumbleB

14-May-09 3:54

Thanks mate. I'll give this a go this evening and see how it works.

Excellence is doing ordinary things extraordinarily well.

musefan14-May-09 3:54

musefan

14-May-09 3:54

your foreach will only loop once as your only giving in one string in the holdLineHid (which i assume is a string)

what you want to do is create a streamreader for file 1.
Read the first line into a string and then create a while loop while not null ...

StreamReader sr = new StreamReader("file1");

string line = sr.ReadLine();

while(line != null)
{
    //do something with the line
    line = sr.ReadLine();
}

sr.close();

Now, in your instance for file 1 you have put two id numbers on each line. Are they one per line in the file? or is there more than one on each line?

Then in your while loop, where i put the comment you could do the following...

StreamReader sr2 = new StreamReader("file2");

string line2 = sr2.ReadLine();

while(line2 != null)
{
   string hid = line2.Substring(0, 11);
   
   if(hid == line1)
   {
      //Do something with the stream writer
      break;//Break the while loop
   }

   line2 = sr2.ReadLine();
}

sr2.Close();

That should do what you want

Life goes very fast. Tomorrow, today is already yesterday.

Problem instantiating form classes created in other C# project

MumbleB14-May-09 18:56

MumbleB

14-May-09 18:56

Hi Mate. I get the jist of this but it seems that the code you have given above puts me in an infinate loop. TO answer your questions:

musefan wrote:
Are they one per line in the file? or is there more than one on each line?

File 1 contains +- 1000 lines with two ID's on each line, the first ID is the one to matched to file2 and the second ID is trhe one to be written to the output file along with the remainder of the data on the matching line of file2.

Hope this makes sense. Almost like doing a match in Microsoft Access and then output a combination of the data from the two files.

Excellence is doing ordinary things extraordinarily well.

Jacobus0114-May-09 3:07

Re: Problem instantiating form classes created in other C# project

14-May-09 3:07

Does anybody know why I can't instantiate a form in my program.cs class. I'm developing a solution with multiple projects. Some are win form applications, some are class libraries and some are web applications. In this case i'm working with a win forms application. I have created forms in another project and I wish to add them to a the new win form project. Intellisense is not picking up the class names. I've also made sure that the forms use the correct namespace but with no success.

Help please!

sudman114-May-09 3:12

sudman1

14-May-09 3:12

Have you added the other project to the current project's references?

Re: Problem instantiating form classes created in other C# project

Jacobus0114-May-09 3:24

Re: Problem instantiating form classes created in other C# project

14-May-09 3:24

No. I'm trying to merge the two projects into one project. There is an existing project and I'm just adding the form classes. Not the project itself. By just adding the new project and setting the references I'm able to access those forms that i need. Unfortunately my bosses don't want the solution working in that way. thus I'm forced to merge the two. I'm adding the forms classes under a folder and not in the root of the project. I can even view them in the designer. I've never encountered this problem before.

DaveyM6914-May-09 3:13

DaveyM69

14-May-09 3:13

Have you added the other project(s) to thi project's references?

Have you added the correct using (s) at the top of the file (or used fully qualified names)?

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus)

Re: Problem instantiating form classes created in other C# project

Henry Minute14-May-09 3:30

Re: Problem instantiating form classes created in other C# project

14-May-09 3:30

How about the .designer.cs file? Does that have the correct namespace?
If none of that works, temporarily comment out any references to the merged forms, clean the solution and do a rebuild.
If none of that works, I give up, although obviously you can't.

Jacobus0114-May-09 3:41

Re: Problem instantiating form classes created in other C# project

14-May-09 3:41

The .designer.cs files all contain the correct namespace. I've tried rebuilding - no success. Cleaned the solution as well. Strange thing is that I can't access the folder in my using directives.

Henry Minute14-May-09 3:50

Re: Problem instantiating form classes created in other C# project

14-May-09 3:50

Is it a permissions/trust thing?
If one machine is Vista and the other XP, this can cause problems.

Jacobus0114-May-09 3:57

Re: Problem instantiating form classes created in other C# project

14-May-09 3:57

No, both projects reside om one machine running xp. I'm going to create new forms in the current project and rename them exactly the same as the forms in the other project and then attempt to replace them. Hopefully this'll work.

Henry Minute14-May-09 4:02

Re: Problem instantiating form classes created in other C# project

14-May-09 4:02

Good old brute-force! Big Grin | :-D

Jacobus0114-May-09 4:08

How to enable tollbar in windows taskbar

14-May-09 4:08

Didn't work. Frown | :(

Now I have to copy-paste all the code WTF | :WTF:

Radzivil Vladimir14-May-09 2:25

Radzivil Vladimir

14-May-09 2:25

Hello.
I'm looking for a wey how to enable my custom toolbar from code (C# , regedit etc.)
The problem is. I have installer with a toolbar and after installation user chould ebable it manually by using mouse right button. I want to enable it automatically.

Do you have any ideas how to enable it ?

Vladimir

Re: How to enable tollbar in windows taskbar

Henry Minute14-May-09 3:38