Windows Forms Discussion Boards

Re: adding controls to tabpages in c# using ado.net

swapna chow17-Mar-09 2:13

17-Mar-09 2:13

Thanks for ur response Eslam Afifi .

But,how do i add user controls that hold another controls .Well i am new to this can u

send me any sample for implementing it.

Thanks in advance.

Re: adding controls to tabpages in c# using ado.net

Eslam Afifi17-Mar-09 12:41

Eslam Afifi

17-Mar-09 12:41

I already did.

Eslam Afifi wrote:
Add a new item to the project and select User Control. design it the way you want.

Right-click the project in the solution explorer
Add -> New Item
User Control
Now you have a designer, design the control as you design a form. Google for more info about that.

Eslam Afifi

Re: adding controls to tabpages in c# using ado.net

swapna chow18-Mar-09 3:03

swapna chow

18-Mar-09 3:03

Thanks Eslam Afifi

Now my program is excelently working with the use of user control.

Thanks to u once again.

Re: adding controls to tabpages in c# using ado.net

Eslam Afifi18-Mar-09 7:40

Eslam Afifi

18-Mar-09 7:40

Glad to help.

Eslam Afifi

Form loading - help

jdcorr16-Mar-09 14:00

jdcorr

16-Mar-09 14:00

Hi,

I have an winform aplication that is mainform with a tree. Each node open a embebed form in mainform.
The show of some forms are slow, because they have a lot of controls, my ideia is show a simple loader, for example a progress bar when the form are load.

What is the best way to do that?

Re: Form loading - help

Eslam Afifi17-Mar-09 0:01

Eslam Afifi

17-Mar-09 0:01

Show the progress form in another Thread because your UI thread would be busy loading the target form and would not update the progress bar.

Eslam Afifi

Re: Form loading - help

tech60319-Mar-09 18:40

tech603

19-Mar-09 18:40

I agree with the previous post. You could have each area open up in in its own thread using the background worker process.

http://msdn.microsoft.com/en-us/library/system.componentmodel.backgroundworker.aspx[^]

If things still take time an you want a visual representation for your user add a progress bar

http://msdn.microsoft.com/en-us/library/system.windows.forms.progressbar.aspx[^]

Hope this helps.

Matthew Vass
QA Analyst
mvass@hostmysite.com
HostMySite.com

Re: Form loading - help

Skymir27-Mar-09 8:29

Skymir

27-Mar-09 8:29

I dunno if it's the best way, what we did was to separate the controls on the form into tabs, put all the controls for a tab into a custom control, then load the custom controls as the tabs get selected. That way we're only loading a subset of the controls at any time.

The draw back is saving the information at the end. You have to check which controls were actually created and deal with the ones that weren't.

The true man wants two things: danger and play. For that reason he wants woman, as the most dangerous plaything.

Crystal Report for Visual Studio 2008

abdu29216-Mar-09 0:34

abdu292

16-Mar-09 0:34

Hi,

I am having two major problem in Crystal Report.

First, I am not able to format date in crystal report.
i selected the filed then right button=>format object, and selected appropriate format for my date field (ie. "dd/MM/yyyy") but again and again it shows in some old format something like 2009-01-05T00:5566

Second, when ever i am trying to do Sum for some fields it shows only count for that particular field even it is of Number/Decimal datatype.

can any one help me please? Thank you in Advance.

Abdu.

Re: Crystal Report for Visual Studio 2008

jaypatel51220-Mar-09 18:55

jaypatel512

20-Mar-09 18:55

You just go in the format options...
There you may find different options where you can change the way you want your data..
all you need to do is first convert it to Datetime and then with your own format..

log4net issue in windows application

ramakrishnamakkena13-Mar-09 4:59

ramakrishnamakkena

13-Mar-09 4:59

I have an window application(using log4net) with App.config as below

<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>

<log4net debug="true">
<appender name="ErrorLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="E:\\Logs\\Test.log" />
<appendToFile value="true" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<datePattern value="yyyyMMdd" />
<rollingStyle value="Date" />
<filter type="log4net.Filter.StringMatchFilter">
<param name="AcceptOnMatch" value="false" />
<param name="StringToMatch" value="get_aspx_ver.aspx" />
</filter>
<filter type="log4net.Filter.LevelRangeFilter">
<acceptOnMatch value="true" />
<levelMin value="WARN" />
<levelMax value="FATAL" />
</filter>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-5p %d %5rms %-22.22c{1} %-18.18M - %m%n" />
</layout>
</appender>

<root>
<level value="ERROR" />
<appender-ref ref="SmtpAppender" />
<appender-ref ref="InfoLogFileAppender" />
<appender-ref ref="ErrorLogFileAppender" />
</root>
</log4net>

</configuration>

I configured log4net as above.

and in Assemblyinfo.cs file i used the tag like
[assembly: XmlConfigurator(ConfigFile="App.config",Watch=true)]

now My problem is when i run this windows application,error is not logging to the given path.

It seems it is looking the app.config file in bin\debug folder.
if i copy & paste the app.config file in the bin\debug file then it is writing error into the given path.else it is not writing.

when we add new item defaultly the file will be in our project location.right?

Please suggest me, why it is behaving like that?

I enabled log4net debug,at that time, error is as below:

log4net: XmlConfigurator: config file [E:\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\App.config] not found. Configuration unchanged.
log4net: Hierarchy: Shutdown called on Hierarchy [log4net-default-repository]

Please give me suggestions as soon as possible.

Re: log4net issue in windows application

Curtis Schlak.13-Mar-09 9:45

Curtis Schlak.

13-Mar-09 9:45

Is it because you have asked it to look for App.config but when you build your project Visual Studio renames App.config to <whatever your="" app="" name="">.exe.config?

You shouldn't have to do the [assembly: XmlConfigurator(ConfigFile="App.config",Watch=true)]. Remove it from your AssemblyInfo.cs file and let the .NET framework perform its own magic.

"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty

Re: log4net issue in windows application

Giorgi Dalakishvili13-Mar-09 10:04

Giorgi Dalakishvili

13-Mar-09 10:04

Try setting Copy local to true for App.config

Giorgi Dalakishvili

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Asynchronous Registry Notification Using Strongly-typed WMI Classes in .NET [^]

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Display Image in DatagiedView

raushan_912-Mar-09 20:06

raushan_9

12-Mar-09 20:06

Hello,

I have a datagridview, and i want to display data and image in datagridview.
and i am using Oracle Database. In Table i have taken BLOB type of Image column.
when i bind the Datagridview to database..then it display only text feild. its not display image field. I have allready taken DataGridViewImageColumn for image field.

How to display also image in datagridview.

Thanks
Raushan Kumar

Re: Display Image in DatagiedView

dan!sh 13-Mar-09 5:30

dan!sh

13-Mar-09 5:30

There are two ways.
1. Save the bytes as image on the disk and then show in the grid.
2. Use MemoryStream to directly show the image in the grid.

There are a lot of samples on web and fairly easy to find.

Happy Holi[^]
जय हिंद

Retaining selected node of treeview

Fadi Yoosuf12-Mar-09 1:26

Fadi Yoosuf

12-Mar-09 1:26

hi
I am having a treeview in the left, a list view in the right and a refresh button.

Treeview shows year,month and dates while listview shows the logs for the current date selected date.

While pressing refresh button, I have to update both treeview and listview from the latest data in dataset.

How can I retain the selected node of the treeview when it is updated.

thanks

Fadi

Re: Retaining selected node of treeview

Eddy Vluggen12-Mar-09 4:26

Eddy Vluggen

12-Mar-09 4:26

You can't keep the node selected, since you're removing it. A workaround would be to get the key of the selected node, before you clear the treeview. Once done with loading, find the node (by key) and select it again Smile | :)

I are troll Smile | :)

non-modal forms can not be displayed in this host application from an activex dll + VB.net

Member 437854611-Mar-09 22:34

Member 4378546

11-Mar-09 22:34

Hello,
I have made one application in VB.Net
In that i have used some ocx controls and Dll which will work perfect in VB
but when i am going to use the properties from that dll that is giving me error that the run time error 406 non-modal forms can not be displayed in this host application from an activex dll.
My code is like that
Private Sub btnAnalysis_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAnalysis.Click

AxEcgTrend1.PerformAnalysis(AxEcgTrend1.SelectedLead)
AxEcgTrend1.AnalyzeAllLeads(True)

End Sub

This will give me error.
Its urgent. please anyone can help for that.
i cant make change in dll.
So in my application what should i write for that?
Thanks in adv.

Re: non-modal forms can not be displayed in this host application from an activex dll + VB.net

Ashfield12-Mar-09 2:42

Ashfield

12-Mar-09 2:42

Member 4378546 wrote:
Its urgent.

No, its not, otherwise you would have contacted the vendor. I suspect you need a .net version of the dll, but its only a guess.

Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP

Re: non-modal forms can not be displayed in this host application from an activex dll + VB.net

Dave Kreskowiak12-Mar-09 3:27

Dave Kreskowiak

12-Mar-09 3:27

Member 4378546 wrote:
So in my application what should i write for that?

There's nothing you can do to fix this in your own code. It's a problem with the .DLL you're using. You'll have to get with the manufacturer of that library to get an updated version that works with .NET.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Taking measurements of an autocad drawing in vb.net

Ageesh11-Mar-09 0:44

Ageesh

11-Mar-09 0:44

Hi,
I am doing an application in VB.Net 2005 and in that I want to read the measurements of an autocad drawing. Is there any way to do it. If possible please help.

Thanks
Report post as abusive

Re: Taking measurements of an autocad drawing in vb.net

dan!sh 11-Mar-09 2:41

dan!sh

11-Mar-09 2:41

When you save an autocad drawing, the file(s) created must be having the dimensions. That is the reason why one can open a saved drawing correctly. It would be good to get a few Autocad drawing files and analyze their structure. Then all you will need to do is read the file at the positions where dimensions are saved.

Happy Holi[^]
जय हिंद

Re: Taking measurements of an autocad drawing in vb.net

Dave Kreskowiak11-Mar-09 4:14

Dave Kreskowiak

11-Mar-09 4:14

Google for "Autocad Automation" and you'll find a bunch of examples on how to talk to Autocad from your code. As for exactly how to get the dimensions of various objects in a drawing, that would be a question for an AutoDesk forum, not us.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

VScrollBar messes with MessageBox

Bruno BERTRAND9-Mar-09 2:10

Bruno BERTRAND

9-Mar-09 2:10

Hi everyone,

I have a Windows Forms application (Visual Studio 2008, .Net framework 2.0) that displays DataBase informations. I added a VScrollBar in my Form in order to allow the user to navigate through datarows easily and quickly. It works fine.

Now I want to prompt the user for confirmation with a MessageBox before saving his changes into the database if he modifies the data and click on the VScrollBar, thus before clicking on the 'save' button.

I added the test into the Scroll event.

private void vScrollBar1_Scroll(object sender, ScrollEventArgs e)
{
    MessageBox.Show("dummy");
}

Result: as long as the mouse pointer stays upon the ScrollBar, its keeps creating a new MessageBox. After 2 seconds, I just have some 10 MessageBoxes. Frown | :(

The Scroll event keeps on be triggered...

Then I tried

private bool ok = true;
private void vScrollBar1_Scroll(object sender, ScrollEventArgs e)
{
    if (ok)
    {
        ok = false;
        MessageBox.Show("dummy");
        ok = true;
    }
}

Not that bad as I have just 1 MessageBox, but the thumb position keeps moving as long as I keep my mouse over the ScrollBar and when I close my MessageBox the thumb goes back to the position it should have stopped... Cry | :((

The issue is that Windows Messages keeps on being sent to the ScrollBar even if he has "lost the focus"; the GotFocus is never fired, so it actually can't lose the focus, but there is a MouseCaptureChanged event to mean that.

Thus, I tried to inherit the component, overriding WndProc function

class MyVScroll : VScrollBar
{
    private const int WM_VSCROLL = 0x2115;
    protected override void WndProc(ref Message m)
    {
        if ((m.Msg != WM_VSCROLL) || this.Capture)
        {
              base.WndProc(ref m);
        }
    }
}

It works!
Really? When I click on a ScrollBar button and move my mouse pointer from the ScrollBar (far enough...), the button I clicked on just desapears from the ScrollBar! OMG | :OMG:

And if I point my mouse back to it (or at least where it was), hold my mouse down and move the mouse, it just... resizes the whole Form the component is in it! WTF | :WTF:

Any idea?

Best Regards.

B. BERTRAND

Re: VScrollBar messes with MessageBox

Richard Blythe10-Mar-09 20:21

Richard Blythe

10-Mar-09 20:21

Very strange! Your issue sounds like my problems. (If it's a problem, then no one knows the answer!)
Great debug work by the way!

This may sound like a shot in the dark, but try trapping the ValueChanged event instead of the Scroll event.
I have had some strange issues resolved by using it instead. Again, maybe a shot in the dark but who knows...

There cannot be a crisis today; my schedule is already full.

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