ListView control - Visual Basic Discussion Boards

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.

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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

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

Guffa2-Feb-07 5:46

Guffa

2-Feb-07 5:46

I assume that this is just your test code, and that you will not ship code that is totally open to SQL injections.

Why are you fetching the data twice? If you need it more than once, fetch into a DataSet or something. Then you don't have to loop through the records to find out how many there are either.

I can't see any code where you try to insert data in any combobox. If you want any help with your error, you have to show the code where it does occur, not some completely different code.

---
single minded; short sighted; long gone;

Getting the name of an instance

edmonson2-Feb-07 0:34

edmonson

2-Feb-07 0:34

Hi,
I need to get the name of an instance of class. Perhaps, using reflection?

Below i show the example

class Idle<br />
    Public one as int32<br />
end class<br />
<br />
class form1<br />
    Dim MyIdle as new Idle<br />
    public Sub button1_click(sender,...) handles button1.click<br />
         textbox1.text= ?¿<br />
    end Sub<br />
end class

How can i get the name 'MyIdle' ??

Re: Getting the name of an instance

testy_proconsul2-Feb-07 1:20

testy_proconsul

2-Feb-07 1:20

hi!

you can't get the variable name. With Reflection you can get types of assemblies, for example. but a variable name is not metadata in a compiled assembly, because a variable is only a location in the ram.

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How can insert a ocx control in word document?

Kumar Arun1-Feb-07 23:12

Kumar Arun

1-Feb-07 23:12

Hi 2 All,

Please suggest me,how can insert a ocx control in word document?

Thanks
Arun Kumar
Soft Engg - DOTNET

Arun Kr

Exporting to Excel

Dayekh1-Feb-07 22:47

Dayekh

1-Feb-07 22:47

Hi,

I have a page which has Labels and Textboxes. Those textboxes contain data which is coming from a database. I want to be able to export the data in the textboxes into excel. Is there anyway for doing that? Do you know of any site which shows me how to?

Thanks!

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