After decimal only 2 numbers should be allowed

Question

Hi,
I want to validate a Textbox/ Grid which could validate the values which should accept only two numbers after the decimal numbers like
123.44
1234.55
12345.66
Can some one help me out

Thanks in Advance,
A.Durga Prasad

durga prasad · Answer

In case if I use back space.

Ryan Alford · Answer

you can use the KeyPress event of the textbox to handle this... ======================================= private void textBox1_KeyPress ( object sender , KeyPressEventArgs e ) { string [] array = textBox1 . Text . Split ( new char [] { '.' }); // array will have two elements if a decimal has been typed if ( array . Length == 2 ) { if ( array [ 1 ]. Length == 2 ) { e . Handled = true ; } } } ==================================================

durga prasad · Answer

Actually it is a windows based application, not an console application.

Niradhip Chakraborty · Answer

double value; value = 1.2; Console.WriteLine(value.ToString("0.00", CultureInfo.InvariantCulture)); // Displays 1.20 Console.WriteLine(value.ToString("00.00", CultureInfo.InvariantCulture)); // Displays 01.20 Console.WriteLine(value.ToString("00.00", CultureInfo.CreateSpecificCulture("da-DK"))); // Displays 01,20 value = .086; Console.WriteLine(value.ToString("#0.##%", CultureInfo.InvariantCulture)); // Displays 8.6% value = 86000; Console.WriteLine(value.ToString("0.###E+0", CultureInfo.InvariantCulture)); // Displays 8.6E+4

durga prasad · Answer

Yes, I want for Windows application, is it possible to convert this java script into vb script , if yes then how. Is there any other way to solve this problem.

Niradhip Chakraborty · Answer

Ya, that’s correct. We can use JavaScript function only in asp.net.

Ryan Alford · Answer

since when is this for ASP.Net? If this is for Windows, a javascript function is useless.

Niradhip Chakraborty · Answer

pass your textbox value to following javascript function. function formatAsMoney(ObjVal) { //Obj.value = formatAsMny(Obj.value) mnt = ObjVal; mnt -= 0; mnt = (Math.round(mnt*100))/100; ObjVal = (mnt == Math.floor(mnt)) ? mnt + '.00' : ( (mnt*10 == Math.floor(mnt*10)) ? mnt + '0' : mnt); if (isNaN(ObjVal)) {ObjVal = "0.00" ;} return ObjVal; }

Ryan Alford · Answer

when validating, split the string on the ".". then check the length of the second element. if it's 2, don't allow anymore typing.

After decimal only 2 numbers should be allowed

Answers (9)