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Early Binding OK, Late Binding Gives Error: Member Not Found
It’s strange, the whole application works well in early binding. I had to change it to late binding to solve some issue. But now I get the exception:
Member not found. (Exception from HRESULT: 0x80020003 (DISP_E_MEMBERNOTFOUND))
At line:
Code:oActiveDoc.ActiveLayout = oActiveDoc.Layouts.Item(value)
I also tried unsuccessfully:
Code:CallByName(oActiveDoc, "ActiveLayout", CallType.Set, 1)
The application uses AutoCAD drawing object oActiveDoc and was created in VB.NET.
Any idea why this happens?
Edited by - Barts007 on 7/10/2007 6:16:25 PM
Help Converting Early Binding To Late Binding
a previous thread suggested using late binding instead of early binding to make a VB project compatible with all versions of Excel. I'm not sure how to do this with the code I'm using and there are no examples in VBhelp. Can anyone help?
'late binding version
Dim xlBook As Excel.Workbook
Dim xlSheet As Excel.Worksheet
Set xlBook = GetObject(DefaultPath & "Allocation.xls")
Set xlSheet = xlBook.Worksheets(1)
xlSheet.Cells(zRow, 1).Value = "100"
xlBook.SaveAs SpreadsheetPath & "Allocation.xls"
xlBook.Application.Visible = True
xlBook.Windows(1).Visible = True
Objects: Late Binding Vs Early Binding
Hi,
I've finally learned how to early bind an object. (Project-Relations). This is supposed to give "Better performance" per help.
What does this really do?
What "performance" is better?
Another question I just thought of. I've gotten responses with "From help" as the greeting. These are far more informative then any help files I have found.
Where are these help files?
Thanks again,
Al.
Objects: Late Binding Vs Early Binding
Hi,
I've finally learned how to early bind an object. (Project-Relations). This is supposed to give "Better performance" per help.
What does this really do?
What "performance" is better?
Another question I just thought of. I've gotten responses with "From help" as the greeting. These are far more informative then any help files I have found.
Where are these help files?
Thanks again,
Al.
Early Binding Late Binding
Hello,
Can any one tell me what is early binding and late binding in context of objects.
what is difference between
dim obj as new data
and
set obj=new data
where and when we use these.
Early Binding, Late Binding??????
This may be a dumb question but can anyone tell me what the difference is between early and late binding? and what the advantages/disadvantages are of each??
Its a topic I hear other VB guys talking about but I have no idea what the're on about
thanks
john
Late Binding Vs. Early Binding
I am creating a simple project.
The project has a form module and a class module.
The class module has only two pair property procedures: LastName and FirstName.
The class is named MyClass
In the Form Module I create two instances of the class module:
Early Binding:
Public InstanceOne as New MyClass
Late Binding:
Public InstanceTwo as Object
Set InstanceTwo = New MyClass
Now when I go to reference the properties in my form I get a drop down menu of available properties for InstanceOne but NOT for InstanceTwo. (The available properties being FirstName and LastName). Both work fine, but only the one declared with early binding gives me that handy menu. Is something wrong here or is this just life?
Early Binding Vs Late Binding
VB scans the HKEY_CLASSES_ROOTTypeLib section of the registry and lists the friendly name from the version key in the Project -> Reference section. With Early binding when you set a reference to a component from Project References, VB uses the value under the win32 key under the TypeLib to load the TypeLibrary information from the file system.
Now consider the various version of the MSXML dlls like MSXML2.DLL, MSXML3.DLL, MSXML4.DLL. If you set a reference to MSXML3.dll (Early binding), you can create an instance of the DOMDocument object using
Code:Dim dom As MSXML2.DOMDocument30
Set dom = New MSXML2.DOMDocument30
I can use above piece of code even if I set a reference to MSXML4.DLL. With early binding, VB loads the typelibrary from the file system using the reference to the component.
Now consider the scenario with late binding. I can create an instance of the object using
Code:Dim dom As object
Set dom = CreateObject("MSXML2.DOMDocument.3.0")
With late binding how does VB loads the type library information? how does it choose between MSXML3.DLL and MSXML4.DLL even though they have the same TypeLib ID? I read some where that VB references the latest version of a type library. On my machine I have MSXML2.0,
MSXML 2.6, MSXML3.0, and MSXML4.0 and when I used
Code:set xmlhttp=server.CreateObject("Msxml2.ServerXMLHTTP")
the code produced the MSXML3.dll "access is denied" error. so I was wondering how come it used v3.0 instead of v4.0. Does it mean that v3.0 is the latest version?? Really appreciate if you guys have any thoughts or ideas on this?
Edited by - Pyash on 3/28/2006 8:44:10 PM
Key Binding
I have a chat program and I want to make it where I can press certain keys such as ctrl + alt + F12 and it will clear the text in the textbox. I have no idea how I would actually code this in, any ideas?
All help will be greatly appreciated.
Binding
I am using the following lines of code to bind my textboxes to my database:
Dim oText As TextBox
''Bind the text boxes to the data provider
For Each oText In Me.txtFields
Set oText.DataSource = adoPrimaryRS
Next
I need to bind a Image to the database as I need to save photo's in my application, can anyone help me please.
Thanks in advance
Binding
I am trying to create a Master/Detail Form. The text boxes on the form are populated with Master Table data thru code. And the DataGrid gets its data source thru adodc(Detail Table). The primary key text field on the form is Flac and the DataGrid has three fields(flac, date, type). How do I bind the two flac fields to create a one to many relationship?
Binding
I am using the following lines of code to bind my textboxes to my database:
Dim oText As TextBox
''Bind the text boxes to the data provider
For Each oText In Me.txtFields
Set oText.DataSource = adoPrimaryRS
Next
I need to bind a Image to the database as I need to save photo's in my application, can anyone help me please.
Thanks in advance
Key Binding
Hey!
Quick question.. I have a button that I want binded. For example. If I hit enter I want the button to be executed. How do I do that?
Binding Ole To Db
I can understand binding a grid to a db. A recordset is searched and the results are put in the rows of the grid.
However, my database contains ole objects in a field and I want them to populate ole containers.
Do I create an array of ole containers?
How does the code look?
Binding EXE's
I once saw a program that could bind 1 exe with another EXE and could also have the EXE open visible or not visible, I have searched many sites for this and could not find any.. If someone could please help me with this.. :P
Binding .bmp To .doc Using Vb
Does anyone know how to take contents of a picturebox and bind it to a word document. Example usage would be binding a signature to the end of a waiver form.
XML Binding
Okay. Stupid question #938290 from me.
I have an XML document. I have converted this to a recordset at runtime.
Now, how do I bind a form to it? I need the ability to edit this XML recordset and be able to resave it.
Please, any thoughts. Tried a few different ways that didn't help. Thanks a bunch.
Tristan Wolf
Confucious say, "Man who fight salmon should use right hook."
Ocx Binding
hi guys, i am writing an application that is a kind of password and personal detail saver thingi...lol
anyway this application has a control that allows the form to be any shape.
the ony problem with this is that it wont open on computers that do not have this control in the windows system 32 folder.
i origionally got round this by using a file binder.
this basically binded my exe it the ocx and put the ocx into the system 32 folder and exicuted my app as normall. this worked wonders BUT.. it actually registers as a virus "Trojan Dropper"
now it isnt actually one but i just wanna get round using a file binder and just embedd the ocx into my app and then get it to save it to the windows system 32 folder its self when exicuted
can anybody help.
thanks
mat
One Day Computers Will Be Programming Us
Binding A Dll To The Exe?
is it possible to use an exe binder to bind a dll file to a vb exe? that way i can distribute just one file without using a setup program.
VB Binding Error
I'm trying to run a VB executable on a PC I don't normally use and I'm receiving this error.
The data binding DLL, '"VB5DB.DLL', could not be loaded.
Not even sure where to begin, any help would be appreciated.
Binding Textbox To DB
hi,
My question is hopefully simple, How do i bind my text box to my db. my db consists of: 1 table(mytest) and 1 field(test), i also created 1 query(myqtest) to pull up my 1 field =)
ive done some access DB before using the SQL queries which worked ok for me but can easily get outta control as im sure a few of you have experienced. So i figured maybe i should learn how to do this the right way. I was close to figuring this out a long time ago, but i cant recall how to do it. ive tried adding a data environment and then set the dataSOURCE of the textbox to it and it didnt work. ive just been randomly adding refernces and components that look like they might be helpful =). So what references/components do i need to add and what am i doing wrong? thank you very much for any help
Recordset Binding
Hey,
Is it possible to set the Form.RecordSource to a recordset ? in access 97 ?
Grtz Noodles
Binding Problem
when my program tries to open a form, a error comes up
"cannot bind to the property or column Main on the datasource
parameter name: datamember"
i spent several hours on this forms code and datalinks, yet this error pops up, can some1 PLZ help me on this subject.
here, ill attach the program
(i have had some trouble and will attach once i get home to my backup edition)
Early Binding For All
I have an application which uses Excel for its input and output.
The problem is if the user opens Excel while my App is running sometimes my App writes to his Spreadsheet instead of the App's spreadsheet.
I find that if I do an Early binding to Excel the problem seems to be fixed.
The problem I am running into is that there is no 1 reference to Excel.
My VB6 reference shows Excel10.exe and works well with Excel 10 users only.
The following code helps.... but for non Excel 10 users I am back to the original problem.
'**************************************************
Public Sub OpenExcel()
Set excel_app = New Excel.Application
If Err.Number <> 0 Then Write2DebugLog (" Unable to do an Early bind to Excel.")
Set excel_app = CreateObject("Excel.Application")
If Err.Number <> 0 Then Write2DebugLog (" Unable to do an Late bind to Excel.")
End If
End Sub
Binding Woes
What's wrong with this code? I'm getting an "Automation Error"/"unspecified Error" message at Set xlsSheet =
Private Sub Form_Load()
Dim xlsSheet As Object
Dim WrkBk As String
Dim x(1 To 10) As String
'---------------------------------------------
WrkBk = "c:Program Files
Balancer03ClientsDB2003mriDB2003.xls"
Set xlsSheet = GetObject(WrkBk, "Excel.Sheet").ActiveSheet
x(1) = xlsSheet.cells(10, 1)
x(2) = xlsSheet.cell(11, 1)
Set xlsSheet = Nothing
End Sub
Late Binding
hi,
i do this code to get the character count and page count of a document.
But it fails if i didn't include the reference to the Word library.
I use MS Word 97.
I need to implement late binding since my app is supposed to be
compatible with Word 97,2000 and XP
Here is the code..
Code:
Private Sub Command1_Click()
Dim wobjapp ' for Word Application object
Dim wobjdoc ' for Word Document object
Set wobjapp = CreateObject("Word.Application")
Set wobjdoc = CreateObject("Word.Document")
Set wobjdoc = wobjapp.Documents.Open("c:doctest.doc")
MsgBox wobjapp.ActiveDocument.BuiltInDocumentProperties(wdPropertyCharsWSpaces)
wobjapp.ActiveDocument.Repaginate
MsgBox wobjapp.ActiveDocument.BuiltInDocumentProperties(wdPropertyPages)
wobjapp.Quit (0)
Set wobjapp = Nothing
Set wobjdoc = Nothing
End Sub
I get error 5 Invalid procedure call or argument
when the code execute the line
MsgBox wobjapp.ActiveDocument.BuiltInDocumentProperties(wdPropertyCharsWSpace s)
pls help
thx in advance
Non-binding Datagrid
Hi,
I have never used a Datagrid before. I would like to use the itnerface simply to ask the user to input soem data and then the program to save it to a text file. Next time the program opens, it retreives data from the text file.
How do I make an Empty datagrid editable so the user can input text in first row and then click enter for another row to be created?
I have made the Allowadd new property to True but it sill seems non-editable.
XML Data Binding
Hi,
We are using XML in our VB project. I want to use XML Data binding and generate VB classes from XML Schema (XSD).
Whats the best way to do this?
Is there any component which can do this?
Thanks,
Ramkumar
Binding DataSource
Hi:
I want to bind a recordset create online to Microsoft FlexGrid Control 6.0 dynamiclly through code, not through Data Control, how do I do that?
Ergent!!!
I'll be very appreciated for your help!
Binding Objects
I often use things like the WMI and FSO in my apps, but reference them through the scripting engine. It has never realy been a problem for me doing it this way, however I have heard it mentioned here before that it should be referenced in the app and not late bound in the engine.
If so how would I go about this to say load the FSO?
DataGrid Binding
I have a problem I am unable to bind a RecordSet to the DataGrid. But Here is the catch. I can do it if I create my own connection to the DBF table using foxpro and retrive in the same module. But once I try create the connection to foxpro DBF and return it to a calling function using a ActiveX Dll the binding of the DataGrid to the recordset doesn't work. This is a weird one?
Binding To Enter Key
I was wondering if anyone could tell me how to bind the enter/return key to a command button. I have a text box and i wanted let the enter key bind to the enter button to perform a statement.
TIA
--Jordan
Binding Keys
Hey all
im searched all over the web but i cant find how to bind keys to code. i specifically just want to move a image based on the ascii values of num( 8 ,4, 6,2,) up, down ect. If anyone could send me a web page or something would be much apreciated. thats about as much as i can explain it i just started programming in this lingo =). thx lots
newbus
Late Binding??
Just a quick question, in the Dot Net Show last month, they referred alot to Late and Early Binding of variables.
What exactly is this?
Thanks,
Binding 2 Forms Together
how can i bind 2 forms together i have my main form which in the program opens another form, but i want to be able to minimize, close the main form and take the other open forms with it??
Ryan
Binding Collection
It’s quite a basic thing to want to display the properties of an object in a form so that the user can alter those properties. I have always found it unattractive to have to set the control’s text property (or whatever) to match the relevant object property on loading the form, and then do just the opposite on either the default value of the control changing or the form being unloaded. On a complicated form with a lot of controls the scope for there being some mismatch between the two lines of code that are needed can become quite great, especially as they are not in the same place. Why can’t you just set up some sort of relationship between the control’s default property and the object property so that the two are kept in sync?
The answer is that you can with VB, provided you use the BindingCollection object. But this requires bindings to be made to a recordset, so you have to transfer all of the data in your objects into the recordset on loading the form, and get it back on unloading the form. Hardly very smooth. So I thought why not just create my own bindings, and use CallByName to get and set the properties from the object to the control and vice versa. Some sample code is attached below for a Bindings object which holds all of the bindings. (I would have attached the whole project, but my browser seems to have decided not to show anything that would appear in a secondary window, so I can’t manage to do so). It seems very simple, and is effective.
I would be pleased to hear if anyone has any comments on it. The only weakness to it that comes to mind to me is that you are losing the syntax checking that is performed when you compile on the object property when you set/get its value because you are just using a string rather than raw code. But this happens anyway when you use the VB BindingCollection object. So isn’t this rather a good thing to do? Or am I missing something in relation to the BindingCollection?
Code:
Option Explicit
'Allows a form to set up a collection of bindings for an object and its controls. A bit like _
the BindingCollection Microsoft provides, but doesn't need recordset to go with it.
Public BindObject As Object‘The data holding object to which this Bindings object relates.
Private Type Binding
ControlRef As Control
ObjectProperty As String
End Type
Dim BCol() As Binding
Public Sub Add(Cont As Control, ObjProp As String)
‘Cont is the control to be bound, ObjProp is the object property.
If Not BCol(0).ControlRef Is Nothing Then ReDim Preserve BCol(UBound(BCol) + 1)
With BCol(UBound(BCol))
Set .ControlRef = Cont
.ObjectProperty = ObjProp
End With
Exit Sub '******
End Sub
Public Sub Update(Optional T As Control)
Dim ControlProperty As String
ControlProperty = "" 'so default property of control will be used. Alternatively could add _
"ControlProperty As String" to the Binding type and store that too to allow non-default properties _
to be used.
Dim n As Long
For n = LBound(BCol) To UBound(BCol)
With BCol(n)
If T Is Nothing Then
'Initialising, so set the properties of all controls.
CallByName .ControlRef, ControlProperty, VbLet, CallByName(BindObject, .ObjectProperty, VbGet)
Else
'The default property of T has changed, so look for the control that has been changed, and change the object's property.
If .ControlRef Is T Then
CallByName BindObject, .ObjectProperty, VbLet, CallByName(.ControlRef, ControlProperty, VbGet)
Exit Sub '**************
End If
End If
End With
Next
End Sub
Private Sub Class_Initialize()
ReDim BCol(0)
End Sub
Private Sub Class_Terminate()
Set BindObject = Nothing
End Sub
Binding Information
in form1, i have first name textbox and last name textbox allow the user key in their name separately, in form2, there is a textbox "name" that join the form1 's first name and last name contenet into it, how to do it? thanks
Binding Error
I am trying to place a masked edit box on my form to format a date, telephone number, and SSN#, but when I run my program it gives and error saying it can't bind to the datafield? Would this have something to do with the field datatype??? The datatypes are all set to text.
ADO Binding Controls
OK I admit it I'm a newbee. Please don't let this stop you from helping.
The form I am working on is basicly contact information. I have the text contols bound to the ADO control. (address, state, ect)
The name selection is a dropdown cobo box, bound to the same ADO control.
When I scroll through the recordset using the ado control I get the correct data in the fileds. But wat I intended to do is use the dropdown combo box to select a name then fill the other filleds from the reocrdset. Right now the combo box works independantly. So I end up being able to change the name connected to a given address. I thought I had the binding correct, but obvioulsly I don't.
My asumption is that I should be able to do this with no code, until I want to start adding records to the recordset.
Any help would be appreciated
Binding A Listfield
I am using a datacombo drop down to have a user select a customer and upon choosing the customer I would like for a user who chooses a drop down list to tie the hourly rate to the customer. For example if you choose John Jones the hourly rate would be $50 an hour. I am having problems binding the text box to the combo box because the combo box is just using a listfield to choose the customer.
Thanks
Binding A Field
I know this is basic, but I'm drawing a blank.
I am putting together a form in Access 2002. I have created a combo box.
When I try to select one of the items in the box, I get a message saying
"Control can't be edited. Its bound to an unknown field "Procedure".
"Procedure" is the name of the field I am working in.
How do I bind this field?
DBList Binding...
Hey all
i have a terrible problem..
i made the DB connection but i just cant bind it to the DBList ....
Code:
Dim conn As New ADODB.Connection, rs As ADODB.Recordset
conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "dblp.mdb" & ";Persist Security Info=False"
Set rs = conn.Execute("select * from cat;")
'Do Until rs.EOF
' MsgBox (rs("name"))
' rs.MoveNext
'Loop
Set DBList1.DataSource = rs
DBList1.ListField = "catID"
DBList1.Refresh
DBList1.ReFill
Set rs = Nothing
conn.Close
Set conn = Nothing
i checked and i get the data
but i just cant bind it to the DBList
its giving me empty list..
Data Binding
I'm starting a new project that is going to be developed in VB6. I'm curious what the thoughts are on data binding with the BindingCollection object. As I look across the web, I see pros and cons, but nothing that can sway me to one side or the other. Does anyone know of a reason(s) for or against?
Thanks.
Binding Issue
Hi everybody, I'm having a little problem with some code. First of all, the project is in vb6 and connects to access2k. In a form I have a combobox that loads the names of the tables in my db. There are also several textboxes. When the combo changes to a different value, I want the textboxes to fill in with the correct values. (this of course only for fields common to all the tables). this is what I was trying to do:
[vb]
Sub fillText(txt As TextBox, rs As Recordset, strDatField As String)
Set txt.DataSource = rs
txt.DataField = strDatField
End Sub
Private Sub cboTables_Change() 'the combobox
Call TableChange
End Sub
Sub TableChange()
Dim strSQL As String
Set budgetGen = New ADODB.Recordset
Select Case Me.cboTables.Text
Case "Administrative Salaries"
strSQL = "SELECT ArtistID, EventID, EstFee, ActFee, ContractStatus, DateOn, NoPayments, AccountNo FROM AdminSalaries"
budgetGen.Open strSQL, BudgetData, adOpenDynamic, adLockOptimistic
fillText txtEstFee, budgetGen, "EstFee"
fillText txtActFee, budgetGen, "ActFee"
fillText txtNoPayments, budgetGen, "NoPayments"
fillText txtAccNum, budgetGen, "AccountNo"
fillText txtDateon, budgetGen, "DateOn"
Case "Artist Housing"
strSQL = "SELECT ArtistID, EventID, EstExpense, ActExpense, NoPayments, AccountNo, Description FROM ArtistHousing"
budgetGen.Open strSQL, BudgetData, adOpenDynamic, adLockOptimistic
fillText txtEstFee, budgetGen, "EstExpense"
fillText txtActFee, budgetGen, "ActExpense"
fillText txtNoPayments, budgetGen, "NoPayments"
fillText txtAccNum, budgetGen, "AccountNo"
fillText txtDescription, budgetGen, "Description"
End Select
End Sub
[/vb]
It only works when I load the form and try the first time. When I try to change again I get the error "Unable to bind to member 'EstFee'" or "Unable to bind to member 'EstExpense'" depending on which one I tried first.
Any idea?
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