string replace function

Question

1.50/5 (2 votes)

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textbox contains 5 as input

expression is 5*x

string exp = textBox1.Text.ToString();
            string expression = exp.Replace("x", exp);
            txtCalculate.Text = expression;

I got this output

5*5*x

Posted 22-Nov-10 1:49am

murali2320

Updated 22-Nov-10 1:53am

RaviRanjanKr

v2

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Manfred Rudolf Bihy 22-Nov-10 8:04am

Ok: I tried your code in a test form, and the only way to get 5*5*x for the result is to put 5*x into textBox1.
Somethings afoul here ;)

2 solutions

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**JF2015** · Answer 1 · 2010-11-22T01:53:00

Solution 2

Him

your code doesn't make sense. Is this what you want? (textBox1.Text is "5")

C#

string exp = "5*x";
string expression = exp.Replace("x", textBox1.Text);
txtCalculate.Text = expression; //5*5

Posted 22-Nov-10 1:53am

JF2015

Updated 22-Nov-10 2:07am

v2

Comments

krishnakumar_L 22-Nov-10 8:05am

Smart explanation

Ankur^\m/ · Answer 2 · 2010-11-22T02:06:00

That's what you should get.
See the comments in the code:

C#

string exp = textBox1.Text.ToString(); //exp = 5*x
string expression = exp.Replace("x", exp); //expression = 5*(5*x) - I have replace x by value of exp
txtCalculate.Text = expression; //txtCalculate.Text=5*5*x

Where is the problem? Edit your question to add more information.

PS - I answered the question and deleted it because it seemed to appear twice. But later I realised it was other answer. So I wrote (rather pasted) it again.