[Message Deleted]

Sun Rays

Member 3499052 wrote:

How can i calculate this text box. TextBox1.Text = "1+2+3"; to giv me int total = 6;

Hi, you can do this with below code.. int i = 1+2+3; TextBox1.Text = i.ToString(); Hope it will help you.

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Burim Rama

thanks but i think we misunderstud i have a gridview where you can clik on row and the value of the row is typing in textbox like this this is a textbox.Text = 1+3+4+5+6. now a need a function to calculate that. i have this code int i = Convert.ToInt32(TextBox1.Text); Label1.Text = i.ToString(); But its not working ;-( Thanks very mutch..

Sun Rays

Hi, first of all what are you diong ? what you wanna do its yet not clear.

Member 3499052 wrote:

textbox.Text = 1+3+4+5+6

int i = 1+3+4+5+6; // you can calculate here textbox.Text =i.ToString(); // here you can convert i to string Now

Member 3499052 wrote:

int i = Convert.ToInt32(TextBox1.Text); Label1.Text = i.ToString();

No need for this, Just write, Label1.Text = TextBox1.Text;

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J4amieC

He wants to write a calculator, where he can type into a textbox "1+2-3*4" and it does the calculating for him. ie/ you've totally misunderstood the point!

Pete OHanlon

You need an expression evaluator like this[^] one.

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Burim Rama

thank you but how ? can you write a exampel ? thanks very mutch

Pete OHanlon

If you'd followed the link you'd have found a whole article about one. I'm curious as to why you voted me down for pointing you towards the answer.

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Burim Rama

sorry i that it was a page list .. i wrote u up now.. sorry.. thanks very mutch

Pete OHanlon

No problem - BTW, I really like that article which is why I pointed you to it. It's very good.

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Sun Rays

Ohhhh, ya really man... :cool:

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Burim Rama

sorry but i have no ide how its works.. i read the articel but i did't understand.

Pete OHanlon

Include a reference to his assembly in your project and then do the following:

ExpressionEval eval = new ExpressionEval(txtFunction.Text);
object output = eval.Evaluate();
if (output != null)
{
  // You have your answer. Do what you want with it.
}

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Paul Conrad

Please don't delete your message once someone has replied. It kind of dirties the forums.

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon