random files..... - Visual Basic Discussion Boards

How do I open a new child MDI form from an existing childmdi form?
I want the new child mdi form to open within the same parent.

Godwin

in the child form do this

Dim frm as new Form1
frm.mdiParent = Me.MdiParent
frm.show()

Thanks

hii everybody..

my ASP .NET Web Application was working properly.. but suddenly one day all the code in javascript stopped working.. i m not able to find out the prob.. all the other data retrieval is working properly..

plzzz help if u can...

Is the browser running javascript ? Did you install XP SP2 ? That could be turning off jscript support in the browser. Although, the rest of ASP.NET relies of jscript - are you sure your scripts are being inserted into the pages still ? How do you insert them ?

Christian Graus - Microsoft MVP - C++

I have a windows form with an com component.This application works fine on local hard drive but when i acces my application from the network it gives system.security.securityexception:Request failed.What should i do

smita

I guess that you are trying to load the application after mapping the network drive (directly from server instead of installing). is it true ? if yes then remember that application will load in your system and in your system com component does not exist. So install it on your machine.

i am working with vb.net and want to create a random file. the file should not be fixed size......helpme .... ByVal e As System.EventArgs) Handles Button6.Click
Dim Employee As Person
FileNum = FreeFile()
FileOpen(FileNum, TextBox1.Text, OpenMode.Random, , , Len(Employee))
Do While Not EOF(FileNum)
FileGet(FileNum, Employee, )
If Employee.ID = Val(TextBox5.Text) Then
Position = Loc(FileNum)
TextBox5.Enabled = False
TextBox6.Enabled = True
TextBox7.Enabled = True
Button5.Enabled = True
Button6.Enabled = False
Button7.Enabled = True
TextBox6.Text = Employee.Name
TextBox7.Text = Employee.Surname
Exit Do
End If
Loop
FileClose(FileNum)
End Sub

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
Dim Employee As Person
FileNum = FreeFile()
FileOpen(FileNum, TextBox1.Text, OpenMode.Random, , , Len(Employee))
Seek(FileNum, Position)
Employee.ID = Val(TextBox5.Text)
Employee.Name = TextBox6.Text
Employee.Surname = TextBox7.Text
FilePut(FileNum, Employee, )
FileClose(FileNum)

TextBox5.Enabled = True
TextBox6.Enabled = False
TextBox7.Enabled = False
Button5.Enabled = False
Button6.Enabled = True
Button7.Enabled = False
TextBox5.Text = ""
TextBox6.Text = ""
TextBox7.Text = ""

End Sub

Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
Dim Employee As Person, FileNum1, FileNum2 As Integer
FileNum1 = FreeFile()
FileOpen(FileNum1, TextBox1.Text, OpenMode.Random, OpenAccess.Read, , Len(Employee))
FileNum2 = FreeFile()
FileOpen(FileNum2, "abcdefg.tnt", OpenMode.Random, OpenAccess.Write, , Len(Employee))

Do While Not EOF(FileNum1)
If (Loc(FileNum1) <> Position - 1) Then
FileGet(FileNum1, Employee, )
FilePut(FileNum2, Employee, )
Else
FileGet(FileNum1, Employee, )
End If
Loop

FileClose(FileNum1)
FileClose(FileNum2)

Kill(TextBox1.Text)
Rename("abcdefg.tnt", TextBox1.Text)

TextBox5.Enabled = True
TextBox6.Enabled = False
TextBox7.Enabled = False
Button5.Enabled = False
Button6.Enabled = True
Button7.Enabled = False
TextBox5.Text = ""
TextBox6.Text = ""
TextBox7.Text = ""
End Sub

End Class

after inserting few records in file ....new data is not being taken....

virtual_manu wrote:
i am working with vb.net and want to create a random file

doesn't mean anything for me...

what to you write inside your file ?

virtual_manu wrote:
the file should not be fixed size......

just write in it, it will increase its size ...

pssst, do you know what you're trying to do ?! Suspicious | :suss:

TOXCCT >>> GEII power
[toxcct][VisualCalc]

make your question more clear and do not put the long code as 99% of the viewers do not have enough time to read and debug your code. So put your question again without code and explain it little more what you want. like creating text file and inserting values in it from text boxes or what ever is your requirement

or wait for the 1% guys if they found this code they might debug it for you.

i want to create a random file in vb.net ...where i can insert, update and search data ...help

well I guess you want to work in file system. as there is nothing in my vocabulary called "Random File" . I suggest you to use XML which is supported well by Dot net and is good according to your requirement

hello friends,

i have created a DLL using C# on .net plateform.

i want to use that DLL file in the VB6.0.

how can i do this?

how would i register that DLL without .net plateform, so that i can use that DLL in my project of VB6.0.

Please reply soon...

Gagan Deep Singla
Chandigarh - INDIA

If you created the dll on .NET platform, you will still need to have .net framework installed on the target machine. Here is a sample class that's exposed to COM. You will also need to register the dll with regasm.exe utility found in %windir%\microsoft.net\framework\v1.1.*.
You can use this library in vbscript or vb6 (or any other COM client) simply with:
Set demo = CreateObject("Demo.demo") 'notice the ProgId below
Here is a link with some more explanation: http://www.codeproject.com/dotnet/nettocom.asp?df=100&forumid=14076&exp=0&select=1028513[^]

Imports System.Runtime.InteropServices
Imports System.Text

<guid("e3928d8b-4eca-42c1-81cf-482f1c18b5f7"), interfacetype(cominterfacetype.interfaceisidispatch)=""> _
Public Interface _demo
<dispid(1)> Function GetString(ByVal strString As String) As String
End Interface

<guid("e601fd54-fa5b-4b62-a7ae-abbe701b8626"), _
classinterface(classinterfacetype.none),="" _
progid("demo.demo")=""> Public Class demo
Implements _demo

Public Function GetString(ByVal strString as String) As String Implements _demo.GetString
Return "COM Sample"
End Function

End Class

Enes M

Some parts of the class got stripped off when i submitted it (because of the < tag), so it won't work. But look at the link above, it has more in depth information.

Hi When you want to write your class in C#, try adding a ComClass rather than a simple class. (the ComClass should be availabe in Project>AddNewItem if I remember correctly.
Then make your dll file, C# would register the class for you and then you can simply use your class on your machine using CreateObject.
(to use the class on an other machine, you must first use regasm.exe as told to you.)

Hope it was helpful.

I have been able to configure IIS thorugh VB.Net. But the problem is :

When I create a virtual directory it creates under "Default Web Site". How can i create a new virtual directory not under "Default Web Site".

I am not been able to assign the Application Name. The Aplication Name is blank. How can i set the application name

And

Not been able to set permission on the web site, only the default permission are set. How can i set permission on the web site

I am using System.DirectoryServices

I've been able to assign the Application Name
but when i try to set permission
VirDir.Properties("AccessWrite").Value = True
It gives me error

formula=Sum ({@DebitBalance})

Why above function cause error "This field cannot be summarized"
Actually @DebitBalance has value of number. Any ways that i can sum up @debitbalance?

Is {@DebitBalance} a formula too?

<italic>Work hard, Work effectively.

yes, inside that is :

if Sum ({Entries.Debit}, {Entries.AccountName})>Sum ({Entries.Credit}, {Entries.AccountName}) then

formula= Sum ({Entries.Debit}, {Entries.AccountName})-Sum ({Entries.Credit}, {Entries.AccountName})

end if

Although the formula always returns number, I don't think you can sum it. The Crystal Report couldn't recognize it as number. You have to look for another solution.

<italic>Work hard, Work effectively.

hi all,
i am currently developing a project in which i have to display images in a crystal report from a database . when i am storing the image in bmp format in the database then it works fine but when i am storing it as jpeg format then no image is displayed in the crystal report.
i am using crystal report 7.5 and vb6. i am using stream object to store image data in the database table .

if anyone have any idea please help me to solve this problem.
from
arnab

hi i want make a program that must run in LAN, and i programming in vb and do not know if by VB, i can run it in LAN.
if yes,how i can conect it to SQL server data base

Please help me OMG | :OMG:

daneshmand wrote:
how i can conect it to SQL server data base

using connection string

Set the the server name or the server ip as the data Source.

<italic>Work hard, Work effectively.