Visual Basic Discussion Boards

Malayil alex2-Feb-07 22:42

2-Feb-07 22:42

i have two same windows application one i installed on my main system and other i installed on a remote machine .i want to upadate the main database each day afetr the work from remote machine also ....plzzz help me

Re: How to connect two windows application

Christian Graus2-Feb-07 22:51

Christian Graus

2-Feb-07 22:51

You need a method of communication between apps ? Is it one way ? If so, a web service on the main server could do it for you.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

stop watch timer and threads

steve_rm2-Feb-07 19:45

steve_rm

2-Feb-07 19:45

Hello,

VS 2005

Currently I have an array of stop watch objects so I can monitor multiple tasks as the same time and the user can stop and start any of them.

The problem now is that when the user closes the form all of the stop watch timers will stop and all the times will be lost.

I am thinking of using threads, but I don't have much experience in threading. Can anyone tell me if this is the right direction to go in?

Many thanks in advance,

Steve

Re: stop watch timer and threads

Christian Graus3-Feb-07 14:18

Christian Graus

3-Feb-07 14:18

Threads won't help, if you close the app, child threads will end. If you just want to store the times that were set, use a config file. If you want the timers to keep running, try writing a service, or similar.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: stop watch timer and threads

steve_rm3-Feb-07 17:19

steve_rm

3-Feb-07 17:19

Hello Christain,

Maybe I wasn't clear. Currently the user can start and stop the stop watch objects on the form. However, when they close the actual form and not the actual application. The idea is that the timers will continue to run if the form as been closed and reopened.

If the user closes the form before stopping the task time then no time will be saved.

There are many tasks that are running all the time and using stop watch objects works well.

If the application is closed then the timers will stop and that is normal for this program.

The reason I thought about threads so that the timers could run in there own threads and if the form is closed they would still work.

Any ideas would be great on this,

Thanks,

Steve

Re: stop watch timer and threads

Christian Graus4-Feb-07 0:16

Christian Graus

4-Feb-07 0:16

In that sense, the main window should run the threads, then they will be just fine.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

How can I make a usercontrol that can contain other controls?

Mansourgh2-Feb-07 18:21

Mansourgh

2-Feb-07 18:21

Hi Dear freind.
I want to provide one special frame that can contain other controls. But I can't make it to container. Please help me.

Re: How can I make a usercontrol that can contain other controls?

Christian Graus2-Feb-07 21:33

Christian Graus

2-Feb-07 21:33

Any control can contain other controls, and the only way for that to happen is for them to be added to the Controls collection.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: How can I make a usercontrol that can contain other controls?

Mansourgh2-Feb-07 22:44

Mansourgh

2-Feb-07 22:44

Thank you for your attention. But I think you didn't understand my purpose.
In VB6 when I want to make a usercontrol like frame , I add a usercontrol and then change it's containcontrols property to True. But in VB.Net I don't know how can I do that? (Converting a usercontrol to container usercontrol)

Re: How can I make a usercontrol that can contain other controls?

Christian Graus2-Feb-07 22:46

Christian Graus

2-Feb-07 22:46

I don't know what that means. A usercontrol, by default is able to contain other controls. I've not used VB6.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: How can I make a usercontrol that can contain other controls?

Mansourgh2-Feb-07 23:02

Mansourgh

2-Feb-07 23:02

Sorry, in VB2005, an usercontrol is'nt containar preliminary.You should do that yourself. But I dont know how?

Thanks.
Mansour

Re: How can I make a usercontrol that can contain other controls?

TwoFaced3-Feb-07 7:53

TwoFaced

3-Feb-07 7:53

This article explains the process. http://support.microsoft.com/default.aspx?scid=kb;EN-US;322222[^]

ListView control

CodingYoshi2-Feb-07 13:28

CodingYoshi

2-Feb-07 13:28

Not sure if this is a VS.Net bug or if I am doing something wrong. I have a listview which has some items in it. The listview has checkboxes so when the user checks an item I am using this event to get the item:

Private Sub ListView1_ItemCheck(ByVal sender As Object, ByVal e As System.Windows.Forms.ItemCheckEventArgs) Handles ListView1.ItemCheck
Dim item As ListViewItem
Dim Selection As ListView.CheckedListViewItemCollection = ListView1.CheckedItems
For Each item In Selection
Dim itm As String = item.Text
TextBox1.Text = itm
Next
End Sub

The problem is when the checkbox is checked the collection has no items but when unchecked then it has an item in it.

Am I doing something wrong? I also tried the mouse up and mouse down event to check the collection but yields the same behavior.

Any ideas?

Yoshimitsu

Re: ListView control

MatrixCoder2-Feb-07 14:40

MatrixCoder

2-Feb-07 14:40

Change the ListView1.ItemCheck to ListView1.ItemChecked.

Trinity: Neo... nobody has ever done this before.
Neo: That's why it's going to work.

Re: ListView control

CodingYoshi3-Feb-07 12:07

CodingYoshi

3-Feb-07 12:07

I get a compilation error as that event does not exist. I even checked all the events for the control and it does not have ItemChecked event.

Yoshimitsu

Re: ListView control

TwoFaced3-Feb-07 13:02

TwoFaced

3-Feb-07 13:02

The checked event wasn't added until .net 2.0. The item's checked state doesn't get updated until after the check event gets raised. Therefore the items in the checked collection (during the check event) do not accuratly portray the state of the listview. The newest item will not be included if it's being checked and will be included when it's being unchecked. The good news is there is a pretty simple workaround. Here's how you can do it.

Private Sub ListView1_ItemCheck(ByVal sender As Object, ByVal e As System.Windows.Forms.ItemCheckEventArgs) Handles ListView1.ItemCheck
    'Check new value of item that called this event.  If checked display in console.
    If e.NewValue = CheckState.Checked Then Console.WriteLine(ListView1.Items(e.Index).Text)

    'Display each checked item in the console window
    For Each item As ListViewItem In ListView1.CheckedItems
        'If item is same as item that called this event then ignore it
        If item.Index = e.Index Then Continue For
        Console.WriteLine(item.Text)
    Next
End Sub

Re: ListView control

TwoFaced3-Feb-07 13:13

TwoFaced

3-Feb-07 13:13

I noticed you are trying to loop through all the checkeditems. There may be more then just one. If you want to show only the item that was just checked then you should using something like this.

Private Sub ListView1_ItemCheck(ByVal sender As Object, ByVal e As System.Windows.Forms.ItemCheckEventArgs) Handles ListView1.ItemCheck
    If e.NewValue = CheckState.Checked Then TextBox1.Text = ListView1.Items(e.Index).Text
End Sub

However, if you want to display all the checked items, which is what you appear to want, you'll need to do it differently. The way you have it set up will only display the last item that was found in the CheckedItems collection.

Re: ListView control

CodingYoshi5-Feb-07 6:02

CodingYoshi

5-Feb-07 6:02

Thanks TwoFaced Smile | :)

How to get members of type found through reflection

cstrader2322-Feb-07 12:37

cstrader232

2-Feb-07 12:37

I can get the assembly and see the types from within it. But I'm missing the link to see the members of the class. Could someone guide me please?

Dim asm = [Assembly].LoadFrom("stta.dll")

Dim ty As Type = asm.CSPluginClass

Dim Memberinforms() As MemberInfo = Type.GetType(????).GetMembers

What goes where ???? is?

Why not ty?

thanks!

Re: How to get members of type found through reflection

Colin Angus Mackay2-Feb-07 14:44

Colin Angus Mackay

2-Feb-07 14:44

cstrader232 wrote:
What goes where ???? is?

Have you read the documentation? http://msdn2.microsoft.com/en-us/library/system.type.gettype.aspx[^]

cstrader232 wrote:
Why not ty?

Because GetType does not take a Type object, it returns one. Since you already have the Type object (ty) why don't you just use it already?

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Re: How to get members of type found through reflection

cstrader2322-Feb-07 17:35

cstrader232

2-Feb-07 17:35

OK, sorry to be stupid. I've read a lot of documentation, but I'm missing this.

My main program needs to find an assembly. The assembly will have one class, and it will have known properties and methods within it.

What is not known ahead of time is the name of the class.

My question is how to call the methods within the class. Presumably I need to get the name of the class somehow.

thanks

Re: How to get members of type found through reflection

cstrader2324-Feb-07 4:04

cstrader232

4-Feb-07 4:04

OK, got it... in case it might help anyone

Dim Asm = System.Reflection.Assembly.LoadFrom "myassembly.dll")

'Since there's only one Exported class
Dim ty As Type = Asm.GetExportedTypes(0)

Dim CSPluginClass As Object = Asm.CreateInstance(ty.FullName, True)

Thanks all!

Crystal Report Error when Running VB6.0 Application with .net Application

Ali 1102-Feb-07 2:55

Ali 110

2-Feb-07 2:55

Hi Guys ,
I am running two applications one of VB6.0 and other with .Net 2005.
When accessing crystal report 9.2 through VB 6.0 application it generates an error.

I tried same VB 6.0 application on other computer without .Net application then it doesn't generate any error.

Kindly send me your suggestions

Thanks in advance.

Re: Crystal Report Error when Running VB6.0 Application with .net Application

aransiola2-Feb-07 3:58

aransiola

2-Feb-07 3:58

What is the error message?

t.aransiola

Please Help me....Small doubt on comboBox of datagridview

priya_p2332-Feb-07 2:51

priya_p233

2-Feb-07 2:51

hi everyone,
please tell me wht shuld i do?
i m developing application in vb.net(winforms)
On my edit button i want to fill datagridview from taking all records in data,
but when i m going to insert data into combobox it will give me handle dataerror Event.
i wrote following code on Edit button click.

cmd = New MySqlCommand("SELECT t.ID, t.CustID, Project, Task, t.Monday, t.Tuesday, t.Wednesday, t.Thursday, " & _
" t.Friday, t.Total , c.CustName FROM timesheet_details t, cust_mast c WHERE c.CustID = t.CustID " & _
" and id=" & txtID.Text & ";", conn)
reader = cmd.ExecuteReader()
i = 0
Dim j As Integer
j = 0
Do While reader.Read()
j += 1
Loop
reader.Close()

DGTimeSheet.Columns.Clear()
DGTimeSheet.ColumnCount = 6
DGTimeSheet_Design()
DGTimeSheet.RowCount = j

reader = cmd.ExecuteReader()
While reader.Read()

MsgBox(reader(2))
MsgBox(reader(3))
CmbCellProj.AutoComplete = True

DGTimeSheet..Item(1, i).Value= CStr(reader(3)) ''Task
DGTimeSheet.Item(1, i).Value = reader(1) ''Project
DGTimeSheet.Item(3, i).Value = reader(4)
DGTimeSheet.Item(4, i).Value = reader(5)
DGTimeSheet.Item(5, i).Value = reader(6)
DGTimeSheet.Item(6, i).Value = reader(7)
DGTimeSheet.Item(7, i).Value = reader(8)
DGTimeSheet.Item(8, i).Value = reader(9) ''Total
DGTimeSheet.Item(0, i).Value = reader(10) ''CustName
''DGTimeSheet.Item(1, i).Selected = True
DGTimeSheet.Item(0, 0).Style.DataSourceNullValue = reader(2)
i = i + 1

End While

reader.Close()

--Thanks in advance for help

priya

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