Visual Basic

14-Dec-06 3:55

having a text box which designate a 'ip address'
how can i check if the user has entered a valid ip address,
and not a string or ...
is there a format in the 'MaskedTextBox' for that ?

and what is the datatype of the field should be in the databsae?
regards

Regards
Ramy

nlarson1114-Dec-06 4:12

nlarson11

14-Dec-06 4:12

1) valid format -- check it "manually" though code -- i don't know if the maskedtextbox or regular expressions can put a limit on the number(<=255)within each segment.
2) valid ip -- if your using 2005 - you can ping it
3) datatype -- string

charchabil0314-Dec-06 5:14

14-Dec-06 5:14

valid format -- check it "manually" though code

and how is that??? :S

Regards
Ramy

nlarson1114-Dec-06 5:49

nlarson11

14-Dec-06 5:49

Dim sIP As String = "192.168.0.1"
Dim sa() As String = sIP.Split(".")

If sa.Length <> 4 Then
MsgBox("invalid ip")
Exit Sub
End If

For i As Int16 = 0 To sa.GetUpperBound(0)
If Not IsNumeric(sa(i)) OrElse CInt(sa(i)) > 255 OrElse CInt(sa(i)) < 0 Then
MsgBox("invalid ip")
Exit Sub
End If
Next

charchabil0315-Dec-06 6:13

15-Dec-06 6:13

thx solved

Regards
Ramy

tbryce31116-Dec-06 14:37

tbryce311

16-Dec-06 14:37

I am a novice so I may not be a 100% correct but try this

If Not(Textbox1.text like "###.###.###.###")then
msgbox("You have not entered a valid format.")
Else
'perform routine.
End If

This should at least ensure they are entering the proper format (not a string, or odd characters, but it will not validate the IP address.

Fileget error

Georgesl14-Dec-06 3:42

Georgesl

14-Dec-06 3:42

Hi,

i am using fileget to read a file, but i am going the following error:

System.Security.SecurityException was unhandled
Message="Late bound calls to file system methods in the Visual Basic runtime are not permitted."

My code is the following:

Public Structure rec

<vbfixedstring(4)> Public icount As String

<vbfixedstring(48)> Public iTellerID As String

<vbfixedstring(48)> Public iTellerName

End Structure

Public myrec = New rec

Dim iFr As Short

iFr = FreeFile()

FileOpen(iFr, "day_08.log", OpenMode.Binary, OpenAccess.Read)

FileGet(iFr, myrec,1)

FileClose(iFr)

What i am doing wrong? Please help.

Re: Fileget error

Dave Kreskowiak14-Dec-06 9:52

boundries of a (picture) map

14-Dec-06 9:52

You can find examples of reading and writing binary files in VB.NET here[^].

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: Fileget error

Georgesl14-Dec-06 21:50

Georgesl

14-Dec-06 21:50

Thank you for replying,
The matter is that i am trying to read a data file. The company who wrote the file sent me a sample of how to read their file but the problem is that the sample is in c++ and my app is in vb.net

the data file sounds like that:

?
‰ L $100 CB 36772579 C $100 FB 49553858 B $100 FL 01935605 A $100 FB 63796061 A $100 FB 33316613 A $100 AB 665

The sample code is:

typedef struct tag_RawDataNoImage
{
// Default Data
char iTellerID[48];
char iTellerName[48];
char iWorkstationID[16];
char iCustomerName[48];
char iCustomerACNo[32];
char iCustomerAddr1[64];
char iCustomerAddr2[64];
char iCustomerIDNo[32];
// Counter Data
SYSTEMTIME iDateTime;
int iType; // 0:Dollar , 1:Euro
int iDenom[10];
int iUnit[10]; // Number of each denomination
int iTotalUnit; // Total Number of count
int iTotalAmount; // Amount of count
int iUVMG; // 0-None , 1-UV , 2-MG , 3-UV/MG
char iImgResult[MAX_ROW_COUNT][32];
} RawData;

int main(int argc, char* argv[])
{
unsigned int i;
CFile file;
DWORD iRawDataCount;
RawData data;
CString itemStr, dataStr;
int uIndex,fOfs;

if(argc < 2)
{
printf("please enter name of Raw file. ex: Day_08.log\n");
return 0;
}

if(!file.Open(argv[1], CFile::modeReadWrite ))
{
printf("File open error!!!\n");
return 0;
}

file.Read(&iRawDataCount, sizeof(DWORD));

file.Seek(sizeof(DWORD),CFile::begin);

for(i=0;i

charchabil0314-Dec-06 3:32

14-Dec-06 3:32

Hey Guys
Having a picutre 'geographical map'
how can i know if the user has clicked inside the map or outside it
within or outside the boundry...
(the thing is that i dont want to allow the user to click outside the boudries
Regards

Regards
Ramy

nlarson1114-Dec-06 3:51

nlarson11

14-Dec-06 3:51

look at the mousedown event. the e argument has 2 properties x,y you can check the numbers to make sure the mouse is within the picture by determining when the boundries stop--

ex: picture 400*300

if x > 10 andalso y > 10 andalso x < 400-10 andalso y < 300-10 then
' within
else
' boundry
end if

charchabil0314-Dec-06 4:01

14-Dec-06 4:01

thx for answering
i havent tried thi yet
but i donu if it will work on a map- i mean the shape of the picture is not a sqaure or circle...
any way will try it
thx

Regards
Ramy

charchabil0314-Dec-06 9:53

14-Dec-06 9:53

first thx for helping
i guess till now what u told me what s not succeeded Frown | :(

dont u think there is an method or function to determine boundaries ?
note the map(picture) is with black boundry and filled in white...
no other shapes or lines within the boundaries

thx

Regards
Ramy

Dave Kreskowiak14-Dec-06 10:09

14-Dec-06 10:09

charchabil03 wrote:
dont u think there is an method or function to determine boundaries ?

The boundries of a image? No, there isn't. You have to supply those boundries yourself or code your own edge detection algorithm to figure them out.

Dave Kreskowiak
Microsoft MVP - Visual Basic

charchabil0315-Dec-06 6:22

15-Dec-06 6:22

Dave Kreskowiak wrote:
You have to supply those boundries yourself

How is that??

Dave Kreskowiak wrote:
or code your own edge detection algorithm to figure them out.

any hint for that?

Regards
Ramy

Dave Kreskowiak15-Dec-06 10:35

Creating one more button in the title bar

15-Dec-06 10:35

Just like image maps in HTML, you have to draw the boundries of each "region" of the map that's clickable and check for mouse clicks inside those regions.

Read this[^] for an explanation of what an "image map" is and the concept behind it. You'll have to implement your own functionality to implement this since there is nothing in Windows Forms that will do it for you.

Dave Kreskowiak
Microsoft MVP - Visual Basic

gsrs14-Dec-06 2:36

gsrs

14-Dec-06 2:36

hi,

can any one tell me how to create a button in the title bar. just like a minimise button in the title bar.

Re: Creating one more button in the title bar

Dave Kreskowiak14-Dec-06 9:45