Allow enter space in text in two strings and first first space is not allow

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Hi,
In Text box at the first whitespace is not allowed and string should be separated by space and number is not allowed .

Posted 26-Aug-12 22:13pm

indrajeet jadhav

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Aarti Meswania · Accepted Answer · 2012-08-26T22:27:00

Solution 1

In textbox's keypress event put this condition,

C#

if (e.KeyChar == " " && c.Text.Length==0)//for block first whitespace 
  { e.Handled = True;}
if (IsNumeric(e.Keychar))//for block numbers
  { e.Handled = True;}

IsNumeric function...

C#

public static Boolean IsNumeric(string stringToTest)
{
    int result;
    return int.TryParse(stringToTest, out result);
}

Happy Coding!
:)

Posted 26-Aug-12 22:27pm

Aarti Meswania

Updated 28-Aug-12 2:37am

v3

Comments

indrajeet jadhav 27-Aug-12 6:12am

bool temp = Utility.IsAlphaNumericWithSpace(e);
if (temp == false)
e.KeyChar = '\0';
if ((sender as TextBox).SelectionStart == 0)
e.Handled = (e.KeyChar == (char)Keys.Space);

else
e.Handled = false;
e.Handled = !(char.IsLetter(e.KeyChar) || e.KeyChar == (char)Keys.Back);
txtCategoryName.Focus();

Aarti Meswania 27-Aug-12 6:20am

nice effort, :)
'txtCategoryName.Focus();' why u wrote this line?

indrajeet jadhav 27-Aug-12 7:01am

@aarti meswania thnxx for appreciation & help....Focus() This a type of validation method..in case user forget to enter in this field such situation focus automatically comes in that control.

Aarti Meswania 27-Aug-12 7:06am

ok, but it is keypress event at that time focus will default in that textbox, you should write that code for focus in leave event or if want in this keypress event then you should check if textbox is empty and tab key is pressed then focus itself.
most welcome :)

indrajeet jadhav 27-Aug-12 7:39am

With in this code i am nt able to split the string e.g ramesh gupta
after entering the string the cursor not allowed space or i press space the cursor transfer goes back to the first position..

Aarti Meswania 27-Aug-12 7:41am

have you used my code or yours?

indrajeet jadhav 27-Aug-12 8:20am

My

Aarti Meswania 27-Aug-12 8:22am

ok once, try my solution and do not write line for focus control itself

indrajeet jadhav 27-Aug-12 8:21am

My code

indrajeet jadhav 28-Aug-12 1:23am

I tried ur code its working k bt it als nt allowed space after string

Aarti Meswania 28-Aug-12 1:35am

c.Text.Length==0 causes to not allow space when text length is 0 else it will allow
c=your textbox (sender)

indrajeet jadhav 28-Aug-12 8:28am

aarti meswania -its nt working ;(

Aarti Meswania 28-Aug-12 8:40am

you mean to say it's not allow whitespace in between string?
I think some other events are conflicting
you can just check it out
take fresh textbox just declare it's keypress event & copy-paste code,
you will get desired output

indrajeet jadhav 28-Aug-12 9:00am

I mean between two words space is allowed bt nt at the start

Aarti Meswania 28-Aug-12 9:01am

yes the code will work for same condition
'between two words space is allowed bt nt at the start'

indrajeet jadhav 29-Aug-12 6:04am

bool temp = Utility.IsAlphaNumericWithSpace(e);
//if (temp == false)
// e.KeyChar = '\0';
if ((sender as TextBox).SelectionStart == 0)
e.Handled = (e.KeyChar == (char)Keys.Space);

else
{
e.Handled = false;
e.Handled = (char.IsNumber(e.KeyChar));//Isnumber not alws no
txtRoleName.Focus();
}
IsNumber() not allowed number
perfectly wrkng code..satisfies conditions like
1.First space is not allowd
2.Space betn strings
3.Number is not allowed

Aarti Meswania 29-Aug-12 6:07am

good, well done!
:)

indrajeet jadhav 29-Aug-12 6:16am

aarti meswania..thnxx fr ur help

Aarti Meswania 29-Aug-12 6:18am

welcome :)