Visual Basic

Re: Saving data from gridvies -> dataset -> database

5-Dec-07 7:55

zwaailicht wrote:
Maybe a foolish question, but the TableAdapter.Update statement, does it directly execute the update of the database?

Yes, it does.

zwaailicht wrote:
In my dataset i have an sql-statement that has generated automatically the needed statements for update, inserting etc

Did it autogenerate the SELECT command, or all of the commands?? Does your database table have a Primary Key?? If not, then you've got a problem where no changes can be made to the database.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

zwaailicht5-Dec-07 11:34

zwaailicht

5-Dec-07 11:34

Hi Dave,

All the statements auto autogenerate (select, update, delete, insert).
And Yes each file as an unique key.

Greet
Hans

installing merge modules and windows services

Mbire4-Dec-07 23:34

Mbire

4-Dec-07 23:34

Hi guys, how do I install an added merge module in my setup project (vb 2005)? I have 2 merge modules the other one is a windows service, how can i register (installutil service.exe) and start the automatic service soon after installation without the user having to do the manual DOS staff(i mean going to the command prompt and typing ....\installutil ...\service.exe and restarting the machine or having to go to the services list and starting it there)?

thanks in advance

Re: installing merge modules and windows services

Dave Kreskowiak5-Dec-07 4:34

5-Dec-07 4:34

Override the Commit method of your Installer class and, in that code, use the ServiceController class to start your service.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

What is worng ?

~V~4-Dec-07 23:16

~V~

4-Dec-07 23:16

Hi all,

I m using datatable.compute method in my application but it not works properly.

In my data table there is feild run (value are 99 and 100).

<br />
 Dim datatable As New DataTable<br />
            datatable = mydataset.table(0)<br />
<br />
            minimum_run = 0<br />
            If Not (datatable.Rows.Count = 0) Then<br />
                minimum_run = Val(datatable.Compute("MIN(run)", ""))<br />
            End If<br />

It gives minimun_run is 100

I don't know what's wrong with my code,Can anyone tell where i m wrong?

Thanks with anticipaton

John_Adams5-Dec-07 3:42

John_Adams

5-Dec-07 3:42

Hi,

Please try the following code and if this helps.

Dim datatable As New DataTable
datatable = mydataset.table(0)

Dim minimum_run as Integer = 0

If Not (datatable.Rows.Count = 0) Then
minimum_run = CType(datatable.Compute("MIN(run)", ""), Integer)
End If

I hope this would be helpful.

Regards,
John Adams
ComponentOne LLC

Guffa5-Dec-07 7:59

Guffa

5-Dec-07 7:59

John_Adams wrote:
minimum_run = CType(datatable.Compute("MIN(run)", ""), Integer)

That would change the type of the result, but it doesn't change how the values in the data table are compared.

Experience is the sum of all the mistakes you have done.

Dave Kreskowiak5-Dec-07 4:18

5-Dec-07 4:18

The first two lines of your code should read:

Dim dataTable As DataTable = mydataset.Tables(0)

What your original code did was create a new instance of a DataTable object, then immediately abandon it and point the datatable variable at an already existing instance of another DataTable object.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Guffa5-Dec-07 7:53

Guffa

5-Dec-07 7:53

Your data in the table is text, not numbers. The string value "100" is smaller than "99", so the result that you get is correct.

If you want to compare the values numerically, you have to change the data type in the data table.

Experience is the sum of all the mistakes you have done.

~V~6-Dec-07 18:27

~V~

6-Dec-07 18:27

Thanks to all for having look at my post and reply.

Now i have understood the problem(The data type was string and have to convert in integer)

Thanks once again Rose | [Rose]

Urgent rpely

pavanteja4-Dec-07 22:23

pavanteja

4-Dec-07 22:23

hai

I have created a Main Form in vb.net(windows application) in that main form i have 4 Link buttons like Register,QuoteReq form etc.. when i click the register Link that will go to the Register form..the code wt i used there is
Dim obj as New RegForm
obj.show()
wen i run it is going to the regform but that is opening in a seperate window...For every click a seperate window is opening..i want the new form in the same window only....can any one help....

H.A.Faheem4-Dec-07 22:42

H.A.Faheem

4-Dec-07 22:42

you want to open the form in mdi form or you want to open just new form

pavanteja4-Dec-07 22:50

pavanteja

4-Dec-07 22:50

In the same window a seperate form has to open..

suppose in my Form1 i have Register, QuoteReq,PaymentForm like that links are there. when i click Register link the page has to be redirected to Register form which is a new one.... I want the new form to be open in the same window ...The design for all the forms are same... only controls are different...

Dave Kreskowiak5-Dec-07 4:00

5-Dec-07 4:00

Then you do what you are already doing, though you have to Hide the form that launched this new form. Something like:

Dim newForm As RegisterForm
Me.Hide()
newForm.Show()

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

VB User Control for the WEB

Steven J Jowett4-Dec-07 23:34

Steven J Jowett

4-Dec-07 23:34

Why not use a tab control?

Steve Jowett
-------------------------
Sometimes a man who deserves to be looked down upon because he is a fool, is only despised only because he is an 'I.T. Consultant'

Andy Dale4-Dec-07 22:14

Andy Dale

4-Dec-07 22:14

I'm trying to create a VB User Control that can be used in a WEB page particularly IE7. The control is to be used Client Side and read the Computer & User Name. Can this be done?

I’ve created a VB User Control and tested it in a Windows Form and all is OK but when I embed it into a WEB page it fails. I have strongly signed the app and added it the Assembly Cache using the .NET Framework 2 Configuration tool. Still with no luck. Strangely a simple VB UC that doesn’t try to read Computer or User Name works fine.

I've created many VB6 ActiveX user controls that can be used to read data in this way when embedded in a WEB page but now need a .NET solution.

I'd appreciate any help with this problem.

Regards
Andy Dale

Re: VB User Control for the WEB

Dave Kreskowiak5-Dec-07 4:03