using * in textbox problem

[baran121]

hi,
i coudnt solve this problem. can you tell me please what is the problem i have in code below :


txtprice.Text = (txtprice.Text) - (txtprice.Text)*(rdr["isk"])/100;

 

[baran121]

sorry the code below:

txtprice.Text = (txtprice.Text) - (txtprice.Text)*(rdr["isk"].ToString)/100;

 

[HarleyQuinn]

I'd assume you're having problems because you're trying to do calculations with string values. I don't know what kind of numbers you've got in your textbox (so I'm assuming integers for this example). You could try something like (for example purposes):

int textval = Convert.ToInt32(textBox1.Text);
int newval = textval - textval * Convert.ToInt32("12") / 100;

textBox1.Text = newval.ToString();

There will be other ways but this should hopefully point you in the right direction.

Hope this helps

Andy
---------------------------------
[green]' Signature removed for testing purposes.[/green]

http://lessthandot.com

 

[baran121]

thank you very much

 

[HarleyQuinn]

Glad I could help

Andy
---------------------------------
[green]' Signature removed for testing purposes.[/green]

http://lessthandot.com

 

[jmeckley]

to follow up on what Andy wrote. C# does not implicitly convert types like VB.
this will throw an exception in C#.

string s =  1;

this will not throw an exception

string s =  1.ToString();

in your case you are trying to use strings as numbers. and then set the numeric value to a text box. you need to convert the values first, as Andy has demonstrated.

Jason Meckley
Programmer
Specialty Bakers, Inc.

faq855-7190
faq732-7259

 

[baran121]

i understand that thank you all.