Visual Basic

Re: Reportviewer control in Visual basic 2008 express esition..

27-Sep-09 21:44

I am using the viaul basic 2008 express edition. I dragged and dropped reportviewer control on a Form and created dataset.xsd by dragging the table in to .xsd.
Now when i click 'Design a new report' link on the type right corner in the reportviewer control on the form, nothing happens at all.
can someone help on this how to work on this reportviewer control? i have some examples on this, but got stuck at this point of "Design a new report".

Paramu197328-Sep-09 23:33

Paramu1973

28-Sep-09 23:33

Don't worry about it. Just put the below codes to your button click()

Dim ObjRpt As New CrystalReport1
ObjRpt.SetDataSource(DS62.Tables(0))
CrystalReportViewer1.ReportSource = ObjRpt
CrystalReportViewer1.Refresh()
CrystalReportViewer1.Visible = True

From the above, Ds62 is Dataset and used to fill the datas, and it has send to the report. Thumbs Up | :thumbsup:

Re: Reportviewer control in Visual basic 2008 express esition..

jeshra27929-Sep-09 4:30

29-Sep-09 4:30

I tried Your code, but showing error that "Type 'CrystalReport1' is not defined".
One more thing, does Visual Studio 2005 professional edition supports Crystal report?

IP addresses

Jjun YO!27-Sep-09 20:58

Jjun YO!

27-Sep-09 20:58

Hi all,

Is there any way or solutions which allows a program to get/retrieve all the ip addresses currently active which belongs to the same network(same subnet)? For example, I run this program in one of the workstations within a network and i will get all the other workstations' ip addresses.

Regards and many thanks!

Tony Richards27-Sep-09 23:32

Tony Richards

27-Sep-09 23:32

If you know the range of valid IP addresses, have you considered just interating through them and pinging them in turn? The currently active ones will hopefully reply. Limitations with this would include that firewalls can sometimes block pings, and if the subnet is large, it could take a while, but it might be alright for your specific network.

My Blog: This Blog

Dave Kreskowiak28-Sep-09 1:06

Dave Kreskowiak

28-Sep-09 1:06

The only way to do that would be to start pinging every IP address in the subnet. The response you get will tell you in there is TCP/IP stack that responds, but that also depends on firewalls blocking the ICMP packets, so you're results may be skewed.

Bascially, there is now way to reliably find every active IP address on a subnet.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Jjun YO!28-Sep-09 4:46

Jjun YO!

28-Sep-09 4:46

Thanks to all!. Was hoping to see if there's any other faster or better way in doing it due to the limitations, anyway great thanks! Smile | :)

datagridview in tabcontrol!

Paramhans Dubey29-Sep-09 0:19

Paramhans Dubey

29-Sep-09 0:19

Hi,
http://www.planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=6514&lngWId=10[^]
Hope this helps.

Regards,
paramhans Dubey

jeshra27927-Sep-09 18:10

Re: datagridview in tabcontrol!

27-Sep-09 18:10

hi everyone,
I have a tab control with 3 tabs, A,B,C.
I have one one database "student" in which i have 4 columns.
There are two datagridviewB and datagridviewC in the two tabs B and C.
I am updating the entries of a datagridviewB by entering details in a form present in Tab A.

Now when I am working in tab C to update the datagridviewC, say for example filtering "student" database and displaying filtered results in datagridviewC; while updating datagridviewC, I noticed that datagridviewB in tab B also getting updated.
My code for filter "student" database in tab C is like this:

cmd = New SqlCommand("SELECT * FROM student WHERE [Name] <= '" + name + "'", con)
myDA = New SqlDataAdapter(cmd)
myDataSet = New DataSet()

myDA.Fill(myDataSet, "student")
datagridviewC.DataSource = myDataSet.Tables("student").DefaultView

Can someone tell me, how to update the datagridviewC in tab C without altering the entries present in datagridviewB in tab B?
FYI : my datagridviewB contains all the student data and in tab C i am filtering the database based on "Name" and displaying in datagridviewC.

Christian Graus27-Sep-09 20:25

Christian Graus

27-Sep-09 20:25

I'd guess that they both have the same datasource. Make a copy of hte data source to bind to form C

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Mycroft Holmes27-Sep-09 22:06

27-Sep-09 22:06

So you get the same answer today as you got yesterday but from a different person.

Give each DGV its own datatable, not a copy, not a dataview filtered differently.

OR

Create a BindingSource for each DGV.

Christian Graus27-Sep-09 22:33

Christian Graus

27-Sep-09 22:33

*sigh* how utterly frustrating. CP needs a popup that shows recent questions from the same poster.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Tom Deketelaere28-Sep-09 3:16

Tom Deketelaere

28-Sep-09 3:16

Christian Graus wrote:
CP needs a popup that shows recent questions from the same poster.

Wrong forum go here[^] please. Poke tongue | ;-P

Seriously tho would be nice to have that Smile | :)

jeshra27928-Sep-09 4:39

28-Sep-09 4:39

Thnaks Holmes. i am very new to this. Anyways, I dragged and added a "BindingSource" into my form and added a code like this:

cmd = New SqlCommand("SELECT * FROM client_details", con)

If con.State = ConnectionState.Closed Then con.Open()

myDA = New SqlDataAdapter(cmd)

myDataSet = New DataSet()

myDA.Fill(myDataSet, "client_details")

DataGridView1.DataSource = myDataSet.Tables("client_details").DefaultView

Can You please tell me how to add the bindingsource to this DatagridView1?
As you told , I have to create a BindingSource for each Datagridview; so if You can tell me how to bind this, then i can carry out my work for other datagridviews in my project.

thanks.

Henry Minute28-Sep-09 5:13

Henry Minute

28-Sep-09 5:13

Set the DataSource property for each DataGridView to the corresponding BindingSource

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

Mycroft Holmes28-Sep-09 11:35

28-Sep-09 11:35

You need to inject a BindingSource between the DataTable and the DataGridView

oBSClient = new BindingSource
oBSClient .DataSource = myDataSet.Tables("client_details").DefaultView
DataGridView1.DataSource = oBSClient

Then if you are using the same table you can create another BindingSource based on myDataSet.Tables("client_details") and bind that to the second DGV

Never underestimate the power of human stupidity
RAH

jeshra27929-Sep-09 4:56

29-Sep-09 4:56

It is throwing error as "Null object reference".

Mycroft Holmes29-Sep-09 13:07

29-Sep-09 13:07

So debug through the code and find out which object is not being instantiated. You did remove the space I inadvertantly left in the declareation right!

Never underestimate the power of human stupidity
RAH

jeshra2791-Oct-09 5:13

1-Oct-09 5:13

I have done this :

Dim myDataSet As New DataSet()

Dim newbinding As New BindingSource
newbinding.DataSource = myDataSet.Tables("clinet_details").DefaultView
DataGridView.DataSource = newbinding

while debugging i found following error in the 3rd line above:

"use the "new" keyword to create an object instance".

how to fix this?

Mycroft Holmes1-Oct-09 12:27