WPF MaskedTextBox required value

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This is my masked textbox from the WPF Extended Toolkit 

<toolkit:MaskedTextBox Name="MaskedtxtTaxId"  Mask="00-0000000" />

I don't want the user to enter incomplete value eg 45-781____
but it can be empty like __-_______
I need to force the user to enter all 9 digits or leave it empty.
Can I accomplish that with the MaskedTextBox?

Thank you.

Posted 10-Apr-13 6:08am

_Natula

Updated 10-Apr-13 6:17am

v4

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3 solutions

Solution 2

try this.

C#

private void MaskedtxtTaxId_LostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
  if (((MaskedTextBox)sender).MaskedTextProvider.AssignedEditPositionCount < ((MaskedTextBox)sender).MaskedTextProvider.AvailableEditPositionCount)
  {
    System.Windows.MessageBox.Show("Not valid");
    /// do something
  }
}

Posted 10-Apr-13 7:09am

stibee

Updated 10-Apr-13 7:10am

v2

Comments

_Natula 10-Apr-13 13:36pm

Thank you- your code treat blank string as "Not Valid".this field is not required field.

This one works but i did not like it:-
var vPromptCharCount = MaskedtxtTaxId.Text.Count(x => x == '_');
if (count > 0 && count < 9)
{
//invalid
}

stibee 10-Apr-13 13:44pm

Sorry I do not understand what you mean. What do you really wanna do? If you write this field into a database, than only write it in the case the string is valid other wise you can ignore it.

_Natula 10-Apr-13 13:59pm

let say I want prompt a message box says "Not Invalid".The code u provided pop up "Not Valid" for the String.Empty at the lost focus event.I don,t want to show "Not Valid" message for string.empty; Thanks for your time

stibee 10-Apr-13 14:04pm

Ok sorry for confusing... this was only for my tests;-)

Solution 1

You need to check the Length of Value entered in the MasketTextBox.

Something like

VB

If ( MaskedtxtTaxId.Value.Length < 9 and  MaskedtxtTaxId.Value.Length > 0 ) Then

 'display message "Value entered cannot be incomplete"

End if

Posted 10-Apr-13 6:43am

Ashwin_Nikam

Updated 10-Apr-13 6:45am

v3

Comments

_Natula 10-Apr-13 12:59pm

I have tried that,every time the length is 10 because its counting PhrompCar and the hiphen(__-_______). I also changed the PhrompCar to "space",still the length is 10.

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_Natula · Accepted Answer · 2013-04-11T03:24:00

Solution 3

C#

var vPromptCharCount = MaskedtxtTaxId.Text.Count(x => x == '_');
if (count > 0 && count < 9)
{
    //invalid
 }

Posted 11-Apr-13 3:24am

_Natula

Updated 11-Apr-13 3:26am

v3

WPF MaskedTextBox required value

3 solutions

Solution 2

Solution 1

Solution 3

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WPF MaskedTextBox required value

3 solutions

Solution 2

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Solution 3

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