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I like to be a .NET purist, meaning that if I know something is a VB6 specific function I want to try to avoid it. In doing so there are times that the work around becomes a hassle as is the case with Format(). Say I have a string strValue = "0001" and I want to add some characters around it and within it. If I were to say use Format(strValue, "**000/0**) I believe I would end up with "**000/1**". What is the equivalent of that with .NET without concatenating strings? String.Format() gives a different output.
CleaKO
"I think you'll be okay here, they have a thin candy shell. 'Surprised you didn't know that.'" - Tommy (Tommy Boy)
"Fill it up again! Fill it up again! Once it hits your lips, it's so good!" - Frank the Tank (Old School)
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CleaKO wrote: strValue = "0001"
CleaKO wrote: Format(strValue, "**000/0**)
The old string formatting characters in VB6, I think the whole set was "@&<>!", are no longer supported in VB.NET. They've been supplanted with something like this:
Debug.Print(String.Format("**000{0,8}0**", "ABC123"))
Results:
**000 ABC1230**
Or, for a left-justified field:
Debug.Print(String.Format("**000{0,-8}0**", "ABC123"))
Results:
**000ABC123 0**
The 8 and -8 just say that this field, whatever ends up in it, must be 8 characters wide and should be padded with spaces. The 0 means that this is the placeholder for the first expression argument.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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Not sure, what you are trying to accomplish, but if you use the numeric value of strValue, it would be something like that:
string s = "0001";
s = string.Format("**{0:000/0}**", Convert.ToInt32(s));
Sorry that's c#, assume similar syntax for VB.
Hope that helps.
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I build a treeview from data sorted alpha. Everything works fine, looks fine.
However treeview.topnode.ensurevisible() is at about the 4 th node.
Treeview.Nodes(0).Ensurevisible() works!
Does anyone know what property VB uses to determine the top node?
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It sounds like you've assumed that TopNode returns the root node of the Tree. Reading the documentation tells you what is really means. TopNode returns the first fully-visible node displayed in the TreeView.
And it's not VB that makes this determination, it's the code in the TreeView code in the .NET Framework.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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Silly me, I assumed the top node was the Top Node! Thanks for the clarification.
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I am using CodeDom to write some code.
e.g. To create a class:-
<br />
Dim _generator As System.CodeDom.Compiler.ICodeGenerator<br />
Dim _writer As System.IO.TextWriter<br />
Dim _codeGenOptions As System.CodeDom.Compiler.CodeGeneratorOptions<br />
<br />
'Set the desired language to vb<br />
Dim foo As New Microsoft.VisualBasic.VBCodeProvider<br />
_generator = foo.CreateGenerator("C:\duncan.vb")<br />
<br />
<br />
'Set the code generation options to be used when creating this class<br />
_codeGenOptions = New System.CodeDom.Compiler.CodeGeneratorOptions<br />
_codeGenOptions.BlankLinesBetweenMembers = True<br />
_codeGenOptions.VerbatimOrder = False<br />
<br />
If Not _generator Is Nothing Then<br />
_writer = New System.IO.StreamWriter(fi.FullName)<br />
<br />
Dim _myDocumentClass As New CodeTypeDeclaration("DuncansClass")<br />
_myDocumentClass.Attributes = MemberAttributes.Public<br />
_myDocumentClass.Comments.Add(New CodeCommentStatement(" Created " & System.DateTime.Now.ToString))<br />
<br />
Dim _txtmember As New CodeMemberField<br />
_txtmember.Type = New CodeTypeReference("System.String")<br />
_txtmember.Attributes = MemberAttributes.Private<br />
_txtmember.Name = _generator.CreateValidIdentifier("_Duncan_Text")<br />
_txtmember.Comments.Add(New CodeCommentStatement("Text to use here "))<br />
_myDocumentClass.Members.Add(_txtmember)<br />
<br />
End If<br />
<br />
_generator.GenerateCodeFromType(_myDocumentClass, _writer, _codeGenOptions)<br />
which creates the code:
<br />
'Created 2007-04-21<br />
Public Class DuncansClass<br />
<br />
'Text to use here<br />
Private _Duncan_text As String<br />
<br />
End Class<br />
Any Ideas as to how I could put the private member declaration in a region using codeDom?
e.g.
<br />
'Created 2007-04-21<br />
Public Class DuncansClass<br />
<br />
#Region "Private members"<br />
'Text to use here<br />
Private _Duncan_text As String<br />
#End Region<br />
<br />
End Class<br />
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Could you be looking for the CodeRegionDirective[^] class? Be careful, not all languages support Regions!
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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Excellent - that did the trick, thanks...
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Any time!
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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Hi all,
I have a case where i bounded data to a list box in a windows application and i want to place a button in that form so that i can move the items up or down. Moreover i want to maintain that order when i leave the form and enter it again.
Thanks
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Guys i managed to move the listbox items up and down but i need to maintain that new state. How can i?
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What will the coding for eject and load CD\DVD ROM???
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You will probably not find someone who will just give you the code. Try searching or writing your own, then when you have a specific question/problem repost the question with the specific problem.
__________________
Bob is my homeboy.
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Google results for "vb.net eject cd[^]".
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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i downloaded some examples, all were in C sharp and working good but when i convert the codes to vb.net, then its giving two errors
Error 1 'Shared' is not valid on a Declare.<br />
Error 2 'System.Runtime.InteropServices.DllImportAttribute' cannot be applied to a Declare.
errors are in following code
<DllImport("winmm.dll", EntryPoint:="mciSendStringA")> _<br />
Public Shared Declare Sub mciSendStringA Lib "winmm.dll" Alias "mciSendStringA" (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, ByVal uReturnLength As Long, ByVal hwndCallback As Long)
someone know why this is happening???
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You don't need the Shared modifier, get rid of it. You also don't need the DLLImport attribute. It's specific to C# code. And those Long's should be Integer's. This tell's me that you converted VB6 AND C# code to VB.NET. The Declare should look like this:
Private Declare Function mciSendStringA Lib "winmm.dll" ( _
ByVal lpstrCommand As String, ByVal lpstrReturnString As String, _
ByVal uBufferLength As Integer, ByVal hwndCallback As IntPtr) As Integer
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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thank you Dave Kreskowiak
its working now
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can anybody tell me how can i use agents in vb.net program.
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1. You need to have a better title than 'Hi'
2. The programming forums are for specific questions such as this is my code, and it errors out. If you want general information, use Google.
__________________
Bob is my homeboy.
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Hi.
In which file are the applications settings being stored by Visual Studio 05?
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It depends. If it is connection information it should be in the app.config file. Other application settings often end up in the settings file that is auto created. Normally if I am adding my own configuration I try to add them to the appSettings section of the app.config.
Hope that helps.
Ben
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Hi,
Is there any OCR API's to use with my application to read the content from the scanned document.
Thanks,
Rams.
Be simple and Be sample.
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Yes, there are quite a few. All of them are commercial, AFAIK ( they cost money )
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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