all checks on textbox

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hi to all!

i have an application which consist more then fifteen forms and many textboxes

i want to create a function where all checks are ther for the textbox

i have two kinds of textbox

one for int
other for char (50)

Posted 20-Sep-11 18:41pm

kami124

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koolprasad2003 21-Sep-11 0:45am

Means u need to validate that Texboxes. some with onlyNumbers and some with char right ?

kami124 21-Sep-11 0:52am

yes absolutaly right
all the characters except alphabets, numeric, single _, one space between two strings e.g Allan Donald, end of the string nothing like space
and text box should not be empty

Prerak Patel 21-Sep-11 0:46am

What do you want to check?!

kami124 21-Sep-11 0:50am

all the characters except alphabets, numeric, single _, one space between two strings e.g Allan Donald, end of the string nothing like space

kami124 21-Sep-11 0:51am

and text box should not be empty

2 solutions

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nagendrathecoder · Accepted Answer · 2011-09-20T19:15:00

Solution 2

Use Regular Expressions for validating textboxes.
You will find many examples of validating textboxes using Regular Expressions here[^]

Posted 20-Sep-11 19:15pm

nagendrathecoder

Comments

kami124 21-Sep-11 3:21am

ya i use it its ok but here is little problem
i make it like this
Regex regex = new Regex(@"^[a-zA-Z'' ']{1,40}$");

but i want to set only single space between the strings and no space at the end
how to do it

koolprasad2003 · Accepted Answer · 2011-09-20T19:14:00

Solution 1

//following code will accept only numeric with Spaces

C#

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
       {

           e.Handled = !char.IsDigit(e.KeyChar) && !char.IsControl(e.KeyChar)&& !(e.KeyChar == ' ') ;

       }

//following code will accept only char's with sapces

C#

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{

    e.Handled = !char.IsLetter(e.KeyChar) && !char.IsControl(e.KeyChar)&& !(e.KeyChar == ' ') ;

}

Posted 20-Sep-11 19:14pm

koolprasad2003

Updated 20-Sep-11 21:23pm

v2

Comments

kami124 21-Sep-11 1:34am

ok i use it like this
but its showing error
so i use KeyChar
if ((e.KeyChar < KeyChar.A) || (e.KeyChar > e.KeyChar.Z) || ((e.KeyChar < KeyChar.a) || (e.KeyChar > KeyChar.z))
e.Handled = true;

now the error is you are missing directive on KeyChar.a, KeyChar.z.....

koolprasad2003 21-Sep-11 1:50am

try following
////////////////////
if ((e.KeyChar < 64 || e.KeyChar > 91) && (e.KeyChar < 96 || e.KeyChar > 123))
e.Handled = true;
else
e.Handled = false;

kami124 21-Sep-11 2:06am

there is no effect on text whats so ever i type i get
like i type "asd 34 =-'/[]"
and my output is also "asd 34 =-'/[]"
so what to do

koolprasad2003 21-Sep-11 3:24am

check the new updated code, you need to call function according to your requirement

kami124 21-Sep-11 4:04am

i done it like this
thanks for your co operation
Regex regex = new Regex(@"^[a-zA-Z'' ']{1,40}$");