read and write data on file

Question

0.00/5 (No votes)

See more:

I want to store some data on text file which will be used in the program later. Data contains one sting data and one numeric data on each record. It needs to store only a single record. Can u tell me >> How can I store different data from different text boxes and read and input in different variables.

Posted 7-Apr-13 1:46am

Darpan Dahal

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2013-04-07T01:54:00

Solution 1

It's not trivial, you have to think about your data first. If your string can contain any character, then you need to put the number first, followed by a delimiter to show where it ends, then the string value:

C#

string writeMe = string.Format("{0};{1}", numericValue, stringValue);

will genare a string to write to the file safely.
You can then read it back, and convert it back to usable values again:

C#

string input = "12345.67;This is the text part";
int sep = input.IndexOf(';');
double numericValue = double.Parse(input.Substring(0, sep));
string strVal = input.Substring(sep + 1);

Posted 7-Apr-13 1:54am

OriginalGriff

Comments

Darpan Dahal 7-Apr-13 7:58am

Thanks! and if both are string then what changes should be made?

OriginalGriff 7-Apr-13 8:20am

That gets a lot more complex, because either you have to use a separator which cannot be in either string (generally difficult to find), or translate your strings so that the chosen separator doesn't appear.
But if you are doing that, it would probably be a good idea to stop looking at a "straight" text file, and look at using some sort of organised storage instead. CSV (which just stands for "Comma Separated Values" and does the translating I mentioned for you), or XML are good simple to use formats, or even a small database such as SqlCE or SqLite would be compact and flexible.