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sumit21 wrote:
plz help me. i had made con (oledbconnection) public
I tried to help you. To reiterate: your design is awful. When you create a NEW instance of Form1, it's not going to contain any data entered into the instance of Form1 that was on the screen, how can it ? you need to move data access into a seperate class, and if you need data from Form1, you need to store that somewhere, or at least pass it to Form2 on initialisation ( or give Form2 a copy of Form1, if you must, assuming it still exists ).
sumit21 wrote:
for this i want to use the same connection i had made in form1.
This is one more good reason to create a class for database connections, and have it contain a static connection object.
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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Hi All,
I want to do a small project(School software)as part of my curriculum.
Any ideas please....
Where i can found out.
Thanks in advance
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A school project is not a small project
there are a lot of things to consider
1. How they register students
2.How student are admitted
3.Student categories
4.How Examination is conducted
5.How Examination is marked
6.How Examination is calculated
7.The formula for calculating the class score,exam score
see there are alot of this to conside
I prefer you develop a Library software(this is vsery simple)
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Hi All,
I try to send email using vb.net but "Could not Access CDO.Message".
Can You help me ?
Best Regards
Bontiet Cavalera
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i am the student at Nirma Institute of technology,Ahmedabad and i want to do some realy good project (such as hotel management system and other)
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Go to rentacoder, then you can find some ideas, and even make $5 for your trouble.
What experience do you have to date ? What have you written before that will scale well into a bigger application ?
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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I have two control,the first tabcontrol has a save button on it and the second usercontrol has a cancel this order button on it.When i click on the Cancel this order button i want to disable both the save button and also the Cancel this order button.What should i do as both buttons are from different control.
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Hi all,
I have a problem here.The scenario is like this.
I'm using a datagrid to display the data that i've queried in the database. I've limit the row of the datagrid into 12 rows. Therefore, if i have received more than 12 data from the database,the data will displayed in multiple pages,so i have provide the forward and previous button in my screen for the user to see all the data that have been displayed.Besides, i'm also have provide the checkboxlist for each row of datagrid so that the user can check only specific data at one time.
My problem starts when a user has check one data at a different pages.It means how I want to populate the data if the user has check one data at the first page, one data at the second page and another data at the third page.How to gather all the data that have been checked first and then start to perform the transaction????
Can anyone help me give some guide.....
besah
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I have windows form control bound to a business object. Upon initialization it displays the data from the business object in the text box as its bound. But when I update the vale in the text box the respective data member of my business object doesnt get updated.
Any suggestions please?
Thanks
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Could some tell me how would I call an aspx page from a window form
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Why do you want to do that ?
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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I wrote a document management windows system. I am storing documents into the SQL server database (such as images, word docs, excel etc). The user then can brows what is in the database. I have a listview control which displays the documents that is stored. I want to be able to have the user view the documents. I have the fallowing code
Dim myProcess As System.Diagnostics.Process = New System.Diagnostics.Process
Dim urlString, aspx_string As String
aspx_string = "GetDocument.aspx?id=" & m_data.ID & "&version=" & m_data.VersionNumber
If (System.Configuration.ConfigurationSettings.AppSettings("WebsiteBaseURL").Length > 0) Then
urlString = System.Configuration.ConfigurationSettings.AppSettings("WebsiteBaseURL") & aspx_string
myProcess.StartInfo.FileName = urlString
myProcess.StartInfo.WindowStyle = _
System.Diagnostics.ProcessWindowStyle.Normal
myProcess.Start()
Else
MsgBox("Can't Open the document")
End If
I am able to display the any kind of document, but the problem is that the browser gives "Action canceled" error then it opens the document with the appropriate application program. Any ideas how I could get around this problem.
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Hello.
I need to create a function to enumerate (list) all controls and respective values existing in a form.
Any ideas?
Thanks
Wilson
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Not such an easy task. Controls can contain child controls. And "Value" is not so easily defined because for something like a ListBox with multiple selections you would have a collection of selected values.
You start by enumerating each control in the form Controls collection. This will give you a list of all "first generation" controls on the form. But that will not always list all controls, because if a GroupBox (Panel, other container control) exists, the Form.Controls collection will not include the container's child controls. So you would then have to enumerate the GroupBox Controls collection to get it's children. But then a GroupBox could also contain a child GroupBox, and on and on ad infinitum.
An interesting exercise in recursion ...
Robert
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Hi, I am recently looking for a validation function for Canadian Postal Codes in VB .net environment. The validation will make sure the postal code is a valide post office postal code. And if some elements of the address like province, city name, street name are provided will
perform some kind of lookup to make sure the Postal code in the address is valid.
Anybody knows where I can get hold of the source code or any reference object that prvides this kind of function? Thanks.
Shirley Lu
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You might want to search for a web service that does this instead. Because this information can and does change. The code is not that hard, it's the database behind it holdling all that information that's the problem.
I Googled for "canada postal code verification software" and came up with lots of hits...
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Hi Shirley
Your question is quite generic.Whenever we have to validate a Character or numeric data.It should match with already existing values or we have to validate it with some set of rules.In the priror case you need to maintain a database with valid information.If you already have a database then its good,what you got to do is just write a function which will do comparison queries on the input information.
Hope this Helps
Mandar Patankar
Microsoft Certified professional
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I have a table that I'm storing the actual names of classes in as a string. from the selected record I'd like to be able to instantiate a class from the string in the table. I've found examples using createobject(), but in all those cases the class had to be registered first. I have a couple of classes and would like to be able to just use the string stored in the table instead of a select statement so that when new classes are added, I don't have to change the code. does anyone know how to do this?
My articles
www.stillwaterexpress.com
BlackDice
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You need reflection to accomplish this:
System.Reflection.Assembly.GetExecutingAssembly().CreateInstance("FullyQualifiedTypeName")
Note that you need the Assembly instance in which the class which should be created resides. If this is not the executing assembly than you will have to use some of the other static functions of Assembly.
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In that case, no.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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hello all ....
I want to open a file in its parent application In visual basic 6...i dont want to specify the exe path of the application...based on the file extension my application should search its parent application and open the file...
In visual basic 6
Using Shell i tried... Like
Shell("d:\windows\system32\notepad.exe d:\temp.txt" )
but in this i need to give the parent application path.i dont want to do that...
in
In Vb .net we have
process.start(d:\temp.txt)
this opens in the parent application...
i want to do the same thing in Visual Basic 6....
Can any one help me out...
Thanks in advance....
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Did you try:
Shell("D:\temp.txt")
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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i tried
shell("d:\temp.txt")
it gives invalid procedure call error msg
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I seem to remember why that didn't work now. Try:
Shell "CMD /C D:\TEMP.TXT"
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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