August 29, 2008 08:05pm pdt

1. TheLearn... 516,017
2. Dhaest 370,713
3. jpaulino 351,446
4. mlmcc 173,900
5. jaime_oliv... 164,216
6. emoreau 143,601
7. jcoehoorn 137,001
8. VBRocks 125,324
9. Fernando... 109,465
10. angelIII 108,908
11. Idle_Mind 97,168
12. rachitkohli 90,480
13. Sancler 90,450
14. PaulHews 71,990
15. webtubbs 70,275
16. graye 67,875
17. Velio 61,895
18. naspinski 61,832
19. samtran0... 59,700
20. TimCottee 57,265
21. ZachSmith 54,870
22. ororiole 54,780
23. pratima_... 51,039
24. GreenGho... 48,140
25. vb_jonas 43,475

1. TheLearn... 1,255,764
2. Dhaest 588,376
3. jpaulino 573,413
4. Idle_Mind 341,796
5. mlmcc 312,116
6. emoreau 305,229
7. jaime_oliv... 286,546
8. Fernando... 276,410
9. VBRocks 252,073
10. surajguptha 246,510
11. samtran0... 239,187
12. angelIII 202,750
13. webtubbs 202,310
14. jcoehoorn 190,911
15. Sancler 178,055
16. graye 112,540
17. PaulHews 108,121
18. DarkoLord 105,341
19. frodoman 103,352
20. appari 102,710
21. vbturbo 99,347
22. rachitkohli 90,480
23. asvforce 90,367
24. JimBrandley 87,101
25. TimCottee 86,195

05.23.2008 at 01:25PM PDT, ID: 23428881

	[x] Attachment Details

try catch and message box in visual basic 2005

Asked by systems_ax in Visual Studio .NET 2005, Visual Basic Programming, Microsoft Visual Basic.Net

i am developing with visual basic 2005 and need a message to display informing me that I can only enter required info into a text box control on my form. Currently I can only enter "numbers and letters only" itno my text box which is great because this is exactly what I need. So, mt text box does not allow any spaces or special characters.
What I need to do is implement a try/catch block for purposes when I try to enter a space or any special character, I will see a message informing me that "I cannot enter spaces or special characters".

This is my entire working code:
If Not (e.KeyCode >= Keys.NumPad0 And e.KeyCode <= Keys.NumPad9) And Not (e.KeyCode >= Keys.D0 And e.KeyCode <= Keys.D9) And Not (e.KeyValue >= Keys.A And e.KeyValue <= Keys.Z) Or e.Shift Or e.KeyCode = Keys.Space Then
If e.KeyCode <> Keys.Delete And e.KeyCode <> Keys.Back Then
e.SuppressKeyPress = True
End If

but hod do I embed it into try and catch.
I tried the folliwng but message is being displayed.
Can someone please shed some light on what I am doing wrong?
thank youStart Free Trial

         
           
           
             Try
            If Not (e.KeyCode >= Keys.NumPad0 And e.KeyCode <= Keys.NumPad9) And Not (e.KeyCode >= Keys.D0 And e.KeyCode <= Keys.D9) And Not (e.KeyValue >= Keys.A And e.KeyValue <= Keys.Z) Or e.Shift Or e.KeyCode = Keys.Space Then
                If e.KeyCode <> Keys.Delete And e.KeyCode <> Keys.Back Then
                    e.SuppressKeyPress = True
                End If
            End If
        Catch
            If (e.KeyCode >= Keys.D0 And e.KeyCode <= Keys.D9) And e.KeyCode <> Keys.Space Then
                MsgBox("Only single numbers and letters are allowed.", MsgBoxStyle.OkOnly, "Information")
            End If
 
        End Try

           
         

Keywords: try catch and message box in visual ba…

	Title
1	C++ try catch block not working
2	catching key strokes
3	Catch and Distribute Wireless Internet
4	try catch from php5 to php4
5	Catching Exceptions - Options
6	try-catch blocks

Loading Advertisement...

20080716-EE-VQP-32 / EE_QW_2_20070628

try catch and message box in visual basic 2005

Asked by systems_ax in Visual Studio .NET 2005, Visual Basic Programming, Microsoft Visual Basic.Net

About this solution