find avarege in vb.net

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hi, how convert textbox value to integer. i need get avarage when i enter value into text box.my code like this
dim nn as double
nn=textbox1.text
dim kk as double
kk=textbox2. text
textb
kk=nn\4
then i got erro msg. its `canont convert string to type double is not valied.
then i try like that
dim ll as double
ll= textbox1.text
textbox2.text= ll\ 4
its work.
but display result is not as a double
when i enter 5 to textbox1 and then click button. result is 1. not 1.25
its not possiible to average
please correct ma code or help me .
im using vb.net
thanks

Posted 6-Feb-12 19:41pm

Amal anjula

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2 solutions

Solution 2

Try kk=CDbl(nn)/4 .
You should not get the error.

Do the same thing for other calculations as well.

Posted 6-Feb-12 19:47pm

Abhinav S

Updated 6-Feb-12 19:48pm

v2

Comments

Prerak Patel 7-Feb-12 2:08am

Man, nn is already declared as double. CDbl won't serve anything. When the text is assigned to double, it is implicitly converted I guess.

Abhinav S 7-Feb-12 3:39am

Agreed.

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Prerak Patel · Accepted Answer · 2012-02-06T19:47:00

Solution 1

You are using wrong operator.

The \ Operator returns the integer quotient of a division. For example, the expression 14 \ 4 evaluates to 3.
The / Operator (Visual Basic) returns the full quotient, including the remainder, as a floating-point number. For example, the expression 14 / 4 evaluates to 3.5.

Ref:http://msdn.microsoft.com/en-us/library/se0w9esz(v=vs.80).aspx[^]

Posted 6-Feb-12 19:47pm

Prerak Patel

Comments

Abhinav S 7-Feb-12 1:48am

Good catch. My 5.

Prerak Patel 7-Feb-12 2:07am

Thanks Abhinav

Amal anjula 7-Feb-12 2:51am

tax u dr.its wrkd