Multiply two different datatype Textbox

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Hi
I need to multiply values in two textbox
box3 datatype is Int
box4 datatype is float
box5 datatype is float(result)

C#

box5.Text = box3.Text * box4.Text;

Could you please help me to solve this

Thanks

Posted 7-Dec-11 21:06pm

Lancy.net

Updated 7-Dec-11 21:40pm

Eduard Lu

v2

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Eduard Lu · Answer 1 · 2011-12-07T21:44:00

Solution 3

Try this one:

C#

float result = Convert.ToInt32(box3.Text) * Convert.ToSingle(box4.Text);
box5.Text = result.ToString();

Regards,
Eduard

Posted 7-Dec-11 21:44pm

Eduard Lu

Comments

Ganesan Senthilvel 8-Dec-11 4:05am

this should be perfect

[no name] 8-Dec-11 4:13am

thanks!

Sravan S 8-Dec-11 6:55am

yeah, this is the best way to meet d requirement.

Sravan S 8-Dec-11 7:06am

but still you will get error when the values entered are non numeric in the text boxes... :(

[no name] 8-Dec-11 21:11pm

validation is not my problem anymore :)

Lancy.net 9-Dec-11 0:11am

Thanks if it is dynamic column how to do the multiplication?

[no name] 9-Dec-11 0:24am

It would be the same. You need to iterate thru all your columns using
foreach(GridViewColumn col in GridView1.Columns)
{
// code here
}

Lancy.net 9-Dec-11 2:59am

Hi could you pls help GridViewRow iam able to use for GridViewColumn getting error as "Error 3 The type or namespace name 'GridViewColumn' could not be found (are you missing a using directive or an assembly reference? need to add any reference
"

Lancy.net · Answer 2 · 2011-12-07T21:37:00

Solution 2

box5.Text = (Convert.ToDouble(Convert.ToDouble(box3.Text) * Convert.ToDouble(box4.Text))).ToString();

Posted 7-Dec-11 21:37pm

Lancy.net

Sravan S · Answer 3 · 2011-12-08T01:05:00

The following would be more perfect because in the above solutions you will get an error when user enters non numeric values( like alphabets or symbols).But with the following code u wont get error. instead you will get value as 0.

C#

 int box3value;
float box4value,result;
int.tryparse(box3.text,out box3value);
float.tryparse(box4.text,out box4value);
result=box3value*box4value;
box5.text=result.tostring();

Hope this will help you for sure.

Syed Salman Raza Zaidi · Answer 4 · 2011-12-07T21:12:00

Solution 1

Convert.ToInt64(box5.Text) = Convert.toInt64(Convert.toInt32(box3.Text) * Convert.toInt64(box4.Text));

May br this'll help you out

Posted 7-Dec-11 21:12pm

Syed Salman Raza Zaidi

Comments

Sravan S 8-Dec-11 6:54am

by following this you will lose the float value as it will be converted into int. Say for value in box4 is 4.2 then Convert.toInt64(box4.Text) results in 4 which is not wat u want.