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I am a newbie programing with VB.NET. I need to write an app separating Data Access Layer and form. In my DAL I have the following method:
Public Function GetcboRelationsDataSet() As cboRelationsDataSet
Dim ds As New cboRelationsDataSet
Try
cboRelationsDataAdapter.Fill(ds)
return ds
Catch exc As Exception
Dim msg As String
msg = "Error reading Widget List from database"
Throw New DALException(msg, exc, Nothing)
End Try
End Function
And in my form this code to bind the dataset:
Private Sub frmListeRelations_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim rh As New RelationsHandler
Try
lstRelations.DataSource = rh.GetcboRelationsDataSet
lstRelations.DisplayMember = "sNom"
lstRelations.Refresh()
Catch ex As Exception
End Try
End Sub
Is this correct ? The code runs fine but no data comes up.
jean-luc
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I’m working on a project which is designed to collect data (a LOT of data) from the user and store it in a database. In VB6 I probably would have used multiple forms (I’m still just learning though) but with VB.NET it seems more practical to use one form with multiple userControls and each userControl containing panels and each panel containing the necessary controls to collect the data.
My question is: Using a function under a btnNext, for example, how can I cycle through each of my panels?
Does anybody know of any good resources or examples that would illustrate this type of thing?
Thanks
Brad
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Hi all,
I am facing a problem in a program of mine , i am designing a software that is tracking the users activities in IE , it matches the users url requests with an internal db of restricted urls and if found can close the IE , but the problem is reading the content in the address bar makes the IE close even from the IE cache ,, i want to allow the url to remain i the cache and the user can type it in the address bar as well (previously i was blocking as soon as the user was typing it.) but when the user hits the enter key or url i want to block it. Problem is how i know or trap whether the page has started to load or the IE has load it.I want to block it on request. How i do that .. Please advice ...
Thanks in advance ...
Sohel
Sohel Shaheen Mallik
Tathya Dot Com Pvt. Ltd.
Junior Programmer
Kolkata , 700059
+9103325734224(O)
+9103325738041(O)
+9103422530913(R)
---------------------
It Goes On !!
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I have a VB project that contains a number of controls. The project is called Controls and one of the controls for example is called Label. So when used in another project the control type name is Controls.Label. Fair enough.
I have reimplemented the Controls library containing the controls in ATL keeping all the original GUIDS, IIDs and names to maintain compatibility. But VB insists on appending Ctl to my name, making it 'ControlsCtl.Label'. This makes the orginal VB form fail to load.
Any ideas?
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 Hi folks, I got a simple question! How do I make .NET menu look flat like VS. I succeeded in reproducing all but the flatness, it seems that the menu control always follows up my OS (Win200). Here is the function I use to draw my menu items, what am I missing. Please help me out I need it to complete a release (on a no royalty product). Thanks
No mather wahat I do my menu still look like 2000 with the .NET feel.
------------------------------------------------------------------------
Sub DrawItems(ByVal EvDrawItems As System.Windows.Forms.DrawItemEventArgs, _
ByVal Mi As MenuItem, _
ByVal m_Icon As Icon)
Dim br As Brush
Dim fDisposeBrush As Boolean
Dim img As Image
Dim br2 As New SolidBrush(Color.Silver)
Dim iSelFac As Integer = 0
Dim imgblk As Image
img = GetIconFromMapping(Mi)
EvDrawItems.DrawBackground()
EvDrawItems.Graphics.FillRectangle(br2, EvDrawItems.Bounds)
EvDrawItems.Graphics.FillRectangle(m_SideBarBrush,
EvDrawItems.Bounds.Left,
EvDrawItems.Bounds.Top, 24, 26)
If CBool(EvDrawItems.State And DrawItemState.Selected) Then
iSelFac = 1
End If
If Not img Is Nothing Then
imgblk = img
If CBool(EvDrawItems.State And DrawItemState.Selected) Then
Dim GDI As New GDI_Filters.Filters
GDI.GrayScale(imgblk)
EvDrawItems.Graphics.DrawImage(img, (EvDrawItems.Bounds.Left _
+ 6), _
(EvDrawItems.Bounds.Top + 6))
End If
EvDrawItems.Graphics.DrawImage(img, (EvDrawItems.Bounds.Left + 6) - iSelFac, _
(EvDrawItems.Bounds.Top + 6) - iSelFac)
If Mi.Checked Then
If (m_CheckImage <> -1) Then
EvDrawItems.Graphics.DrawImage(m_Icons.Images(m_CheckImage), (EvDrawItems.Bounds.Left + 6) - iSelFac, _
(EvDrawItems.Bounds.Top + 6) - iSelFac)
Else
EvDrawItems.Graphics.DrawImage(m_frmDummy.ImageList1.Images(0), (EvDrawItems.Bounds.Left + 6) - iSelFac, _
(EvDrawItems.Bounds.Top + 6) - iSelFac)
End If
End If
Else
If Mi.Checked Then
If (m_CheckImage <> -1) Then
EvDrawItems.Graphics.DrawImage(m_Icons.Images(m_CheckImage), (EvDrawItems.Bounds.Left + 6) - iSelFac, _
(EvDrawItems.Bounds.Top + 6) - iSelFac)
Else
EvDrawItems.Graphics.DrawImage(m_frmDummy.ImageList1.Images(0), (EvDrawItems.Bounds.Left + 6) - iSelFac, _
(EvDrawItems.Bounds.Top + 6) - iSelFac)
End If
End If
End If
Dim rcBk As Rectangle = EvDrawItems.Bounds
rcBk.X += 24
If CBool(EvDrawItems.State And DrawItemState.Selected) Then
br = New LinearGradientBrush(EvDrawItems.Bounds, Color.FromArgb(40, Color.Blue), Color.FromArgb(40, Color.Blue), 0)
fDisposeBrush = True
EvDrawItems.Graphics.FillRectangle(br, EvDrawItems.Bounds.Left + 2, rcBk.Top + 2, EvDrawItems.Bounds.Width - 4, rcBk.Height - 2)
ControlPaint.DrawBorder3D(EvDrawItems.Graphics, EvDrawItems.Bounds.Left + 2, rcBk.Top + 2, EvDrawItems.Bounds.Width - 4, rcBk.Height - 2, Border3DStyle.Flat)
End If
If fDisposeBrush Then br.Dispose()
br = Nothing
Dim sf As StringFormat = New StringFormat
sf.HotkeyPrefix = HotkeyPrefix.Show
sf.SetTabStops(60, New Single() {0})
If Mi.Enabled Then
br = New SolidBrush(Color.Black)
Else
br = New SolidBrush(Color.Gray)
End If
If (Mi.Text <> "-") Then
EvDrawItems.Graphics.DrawString(GetRealText(Mi), m_Font, br, _
EvDrawItems.Bounds.Left + 26, _
EvDrawItems.Bounds.Top + 6, sf)
Else
EvDrawItems.Graphics.DrawLine(New Pen(Color.Gray), rcBk.Left, rcBk.Top + 2, rcBk.Width - 4, rcBk.Top + 2)
End If
If (Mi.Index = 0) Then
ControlPaint.DrawBorder3D(EvDrawItems.Graphics, EvDrawItems.Bounds.Left, EvDrawItems.Bounds.Top, EvDrawItems.Bounds.Width, EvDrawItems.Bounds.Height, Border3DStyle.Flat, Border3DSide.Top Or Border3DSide.Left Or Border3DSide.Right)
Else
If Not (Mi.Parent Is Mi.GetMainMenu) Then
If (Mi.Parent.MenuItems.Count - 1 = Mi.Index) Then
ControlPaint.DrawBorder3D(EvDrawItems.Graphics, EvDrawItems.Bounds.Left, EvDrawItems.Bounds.Top, EvDrawItems.Bounds.Width, EvDrawItems.Bounds.Height, Border3DStyle.Flat, Border3DSide.Bottom Or Border3DSide.Left Or Border3DSide.Right)
Else
ControlPaint.DrawBorder3D(EvDrawItems.Graphics, EvDrawItems.Bounds.Left, EvDrawItems.Bounds.Top, EvDrawItems.Bounds.Width, EvDrawItems.Bounds.Height, Border3DStyle.Flat, Border3DSide.Left Or Border3DSide.Right)
End If
Else
If (Mi.GetMainMenu.MenuItems.Count - 1 = Mi.Index) Then
ControlPaint.DrawBorder3D(EvDrawItems.Graphics, EvDrawItems.Bounds.Left, EvDrawItems.Bounds.Top, EvDrawItems.Bounds.Width, EvDrawItems.Bounds.Height, Border3DStyle.Flat, Border3DSide.Bottom Or Border3DSide.Left Or Border3DSide.Right)
Else
ControlPaint.DrawBorder3D(EvDrawItems.Graphics, EvDrawItems.Bounds.Left, EvDrawItems.Bounds.Top, EvDrawItems.Bounds.Width, EvDrawItems.Bounds.Height, Border3DStyle.Flat, Border3DSide.Left Or Border3DSide.Right)
End If
End If
End If
br.Dispose()
br = Nothing
sf.Dispose()
sf = Nothing
End Sub
The warlord
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Hi!
If it's possible, how do I remove scrollbar from tree view control?
(Done it with data grid, but tree view seems to contain no other controls)
/Rickard
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Hello Friends, Please give me ideas on how to carry on my project. What software can I possibly use?
This is the requirement for my final yr project:
Project Title: E-commerce website design: shopping cart
Aim of project: A commercial website needs to develop a shopping cart for their online shop
Summary of work to be undertaken:
*investigate a current state of e-commerce technologies
*propose a basic plan of your design
* implement the design into a fully functional shopping cart
*implement a simple web page to show how to use your shopping cart.
*Write a report and present the final result
=======================
I would be extremely grateful if you could advise me on the right programs to use.Please send your responses to dubeben2002@yahoo.co.uk
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i have a textbox control that displays a date field. In the validating event of the control, I am checking that the user has entered a valid date (in the format I specify and check), and if the date is not valid calling e.cancel = true to force valid date entry. My problem is that if the user trys to close the form using the X button, the validating event is still firing. I read somewhere you could check the mouse click to determine where the user clicked (title bar or client area). How would you determine where the user clicked?
jmiddleton
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vb6 or vb.net ?
in vb6 i don't face this problem
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How can I set a password on my source code so that no one can open a project?
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Unless your using the Code Repository, you can't.
The Code Repository is like a library, where you check code in and out to work on it.
If your not using the Repository, then you'll have to depend on NTFS folder rights on your project to keep other users out of the folder.
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Hi,
I use VS .NET (Version 1.0.30xxx) for the VB .NET development.
I tried to write my own class with its own properties and methods. And I was able to use them in the derived objects. This all works fine when it comes to programming.
For example....
<br />
<br />
public class MyOwnClass<br />
public sub MySubMethod()<br />
...<br />
end sub<br />
end class<br />
<br />
What should I do to get the comment/description in the IDE... when I keep the mouse over the method name, when invoking as....
<br />
dim myc as new MyOwnClass()<br />
myc.<br />
(Please ignore any errors if there is in code)
When I type that myc. dot... the list of methods in the class are displayed in the IDE... I want to see a description/comment - that says abou the methos nearby (this gets displayed in any inbuild methods in the class library)
Please help. I am sorry, if I was not able to explain my requirement properly.
I was born intelligent
Education ruined me!.
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Thanks.... I would give it a try..,
I was born intelligent
Education ruined me!.
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You might wa to try searching in the help for Visual Basic.NET for 'Attributes and Design-Time Support' for how to add descriptions to your code.
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Anonymous wrote:
searching in the help for Visual Basic.NET
This didnt help me much.. thats why I was trying to get help from CP
I was born intelligent
Education ruined me!.
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I have two problems with a property for a custom control:
1) the default value does not show up when the properties for the custom control are viewed.
2) The size of the control at run time reverts to the initial size of the combo box which is the final result of user selections in the custom control.
These two problems may be interrelated.
The custom control is a composite of standard vb.net controls including a drop down combo (ccdropdown), some buttons, etc. The run time user sees the ccdropdown combo. At run time, when the user clicks on the drop down, the custom control displays the embedded standard controls and allows the user to set the final value which will be displayed as text in the ccdropdown combo box at which time the ccdropdown combox also closes up.
The custom control needs to have three different widths depending upon the value of a property that the designer will use. I can create a property called mode, and cause the designer to show the correct size on the design page depending on the value selected in the mode property.
The relevant code is as follows:
private parm1 as string
<typeconverterattribute(gettype(modelist)), _
="" categoryattribute("mode"),="" descriptionattribute("mode1,="" mode2,="" or="" both"),="" designonlyattribute(true),="" defaultvalueattribute("mode1")=""> _
Public Property Mode() As String
Get
Select Case parm1
Case "Mode1"
ccdropdown.Width = 90
Me.Width = 90
Case "Mode2"
ccdropdown.Width = 75
Me.Width = 75
Case "Both"
ccdropdown.Width = 150
Me.Width = 150
End Select
Return parm1
End Get
Set(ByVal Value As String)
Select Case Value
Case "Mode1"
ccdropdown.Width = 90
Me.Width = 90
Case "Mode2"
ccdropdown.Width = 75
Me.Width = 75
Case "Both"
ccdropdown.Width = 150
Me.Width = 150
End Select
parm1 = Value
End Set
End Property
Modelist has been initalized to "Mode1","Mode2","Both"
me.width is changed so that the designer sees the proper width of the control depending on the mode selection by the designer.
I would appreciate any insight into this problem from any source.
Thanks in advance. 
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Hi,
I am writing a VB app to use Word to dynamicaly create a document. It creates and all, but I am trying to create a hard page break and insert data into it. I can create the break, but I can't figure out how to have it go to the new page. Please help. Thanks,
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Just starting out in programming, and I'm trying to create a program that can tell the user whether or not the word they input is a palindrome regardless of the length of the word.
Here's what I have as far as code:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim a, b As String
Dim length As Integer
a = InputBox("Enter a word to check and see if it is a Palindrome.")
length = Len(a)
If a.Substring(0, 1) = a.Substring(length, -1) Then
MsgBox("This is a Palindrome")
Else
MsgBox("This is not a Palindrome")
End If
End Sub
I get an error stateing "Additional information: Length cannot be less than zero."
Any insight into this matter would be greatly appreciated
P.S. Just for the record, I'm not looking for the answer. A point in the right direction would help though 
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BigGreen wrote:
If a.Substring(0, 1) = a.Substring(length, -1) Then
I'm in no way a VB dude, but is the comparison operator supposed to be: "=="? As in:
If a.Substring(0, 1) == a.Substring(length, -1) Then
Regards,
MarkC#
---------
.Net Head
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Ian Darling wrote:
Equality *and* assignment are both '=' in VB.
There ya go. At least I can say with full cliche in tow, "I learn something new every day."
I'll stick with C# and Java, thank you. Best wishes!
Regards,
MarkC#
---------
.Net Head
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