Guys, I totally can't get it the code how to compare the two txt file data? Please help to settle guys plz..

Question

0.00/5 (No votes)

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C#

string file1 = @"\\192.168.5.10\fbar\TOOLS\ProbingApps\ProbingSystem\CoreTouchDownApps\version.txt";
string file2 = @"C:\CoreTouchDownApps\version.txt";
if (string.Equals(file1, file2))
    try
    {
        Process.Start(@"C:\CoreTouchDownApps\CoreTouchDown.exe");
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.Message);
        Console.ReadLine();
    }

else
    try

Posted 5-Dec-15 1:43am

Nigol_Learner

Updated 5-Dec-15 1:56am

Tomas Takac

v2

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2 solutions

Solution 1

You are comparing the files names, not the files contains.

You need to read the files contains and then compare the contains.

Posted 5-Dec-15 2:00am

Patrice T

Comments

[no name] 5-Dec-15 8:05am

Not really a solution, but a good hint at least, so a five.

Patrice T 5-Dec-15 8:09am

Thank you
I know C# enough to understand what is wrong, but not enough to correct it myself. :)

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Tomas Takac · Accepted Answer · 2015-12-05T02:00:00

Solution 2

You are comparing the paths to those files. What you need to do is to compare their content. Try this:

C#

string path1 = @"\\192.168.5.10\fbar\TOOLS\ProbingApps\ProbingSystem\CoreTouchDownApps\version.txt";
string path2 = @"C:\CoreTouchDownApps\version.txt";

string content1 = File.ReadAllText(path1);
string content2 = File.ReadAllText(path2);

if(content1 == content2)
{
    // do something
}
else
{
    // do something else
}

Please note that File.ReadAlltext()[^] reads the content of the file into memory. You shouldn't use this with big files.

Posted 5-Dec-15 2:00am

Tomas Takac

Updated 5-Dec-15 2:09am

v2

Comments

[no name] 5-Dec-15 8:03am

And let's hope the files are not several GBs :). I let a five here.

Tomas Takac 5-Dec-15 8:11am

Thanks. You are right, I updated the solution.

[no name] 5-Dec-15 8:35am

Allow me a question from my side: For example 'ñ' has more than one representation in Unicode. What is now the safe way to compare text? Is it Operator == or is it the method compare?

Tomas Takac 5-Dec-15 17:00pm

I'm not sure what you mean by "more than one representation in unicode". If that means different encoding then I would agree. The == operator does ordinal comparison (comparing character values). If you refer to culture-specific comparison then this only has effect on greater-than or less-than comparison (i.e. sorting). This does not affect equality/inequality hence ordinal comparison and == operator will work.

Tomas Takac 5-Dec-15 17:36pm

ok, another idea. Are you talking about surrogate pairs? I guess that would be two different strings in either case. But I'd need to check that first to be sure.

[no name] 6-Dec-15 7:24am

Thank you very much for your reply. Yep I mean Surrogate pairs. I Need to read more about it. Thank you.

Arasappan 5-Dec-15 8:04am

please refer solution 1 with ppolymorphe

Nigol_Learner 5-Dec-15 8:17am

OMG,,,,,,,,its works....you are pro bro,,,,,File.ReadAllText in case if I use File.ReadAllLines, is it able to work?

Tomas Takac 5-Dec-15 17:38pm

Sure you can use File.ReadAllLines. The real question is does it make it easier for you?