Validate Textbox

[AishaKhalfan]

Hi All,


I have a textbox that should be validated to enter letters only. However, if the users enter number it should be given error message. This application is windows application.


Any volunteer to help me to solve this particularly problem.


I’m looking forward to answering this post.


Thanks & Regards,

Aisha

[gomzi]

Hi All,


I have a textbox that should be validated to enter letters only. However, if the users enter number it should be given error message. This application is windows application.


Any volunteer to help me to solve this particularly problem.


I’m looking forward to answering this post.


Thanks & Regards,


Aisha

try out -> regex.ismatch(y ourstring,"^([a-z])*$")

[AishaKhalfan]

try out -> regex.ismatch(y ourstring,"^([a-z])*$")

Where should I place this code?




Thanks & Regards,

Aisha

[gomzi]

Where should I place this code?




Thanks & Regards,

Aisha

inside the event of your form submit button.

[AishaKhalfan]

What is the data type of regex because I have to declare?



Thanks & Regards,

Aisha

[gomzi]

What is the data type of regex because I have to declare?



Thanks & Regards,

Aisha

There is no need for declaring it.
You will be using its static method "IsMatch()"

[AishaKhalfan]

I got error that telling me regex not declared. I placed the code in save button as following:


regex.ismatch(t xtemployeeName, "^([a-z])*$")


Should I need to important any ting?



Thanks & Regards,

Aisha

[gomzi]

I got error that telling me regex not declared. I placed the code in save button as following:


regex.ismatch(t xtemployeeName, "^([a-z])*$")


Should I need to important any ting?



Thanks & Regards,

Aisha

try importing system.text and system.text.reg ularexpressions

[krknaveen]

Hi Aisha,

The Most simple way of doing it is to trap the ASCII value in the hey press event of the textbox and validate the character.

The Following is asample code for not allowing any values except a-z and A-Z

Private Sub TextBoxKeyPress (ByVal sender As System.Object, ByVal e As System.Windows. Forms.KeyPressE ventArgs) _
Handles TextBoxName.Key Press
Select Case Asc(e.KeyChar)
Case 97 To 122, 65 To 90
Case Else
e.Handled = True
End Select
End Sub

Hope this will solve your purpose.

Regards,
Naveen

[krknaveen]

Hi Aisha,

48-57 is the ASCII range for 0-9

Instead of e.Handled, give the message in the message box.

Regards,
Naveen

[AishaKhalfan]

Hi Naveen


First, I would like to thank you for helping me to solve this problem a lot.

Case 97 To 122, 65 To 90

Could explain for me this line please?



You supporting is appreciated


Thanks & Regards,

Aisha .