Persisting ADO Recordset As XML File?
Oct 15, 2008
I am using MS Access 2003 database and connecting to it via OLE DB for Microsoft
JetConnectionString="PROVIDER=Microsoft.Jet.OLEDB.4.0;" & "Data Source=c:httpDatabaseCisco_conf.mdb;" & "User ID = Admin; Password=;" objConn.Open ConnectionStringThen. I open a recordset and try to save it as XML fileIn order to persist data as XML when saving a recordset to a file, I have file in ADTG format not in XMLregardless my explicitly specifyingrs.Save "nyOrder.xml", adPersistXMLthe data saved do not seem as XML, they do seem as ADTGTG! 'т?ІПЌ# Є _юX ! Т*cцлПг Є ? @ ѕ"ИуО*е Є Dw= яя яяI Б<Ћлm Ќц Є _юX , " m y O r d e r " m y O r d e r U рЃЂ d e s c r i p t i o nAs was suggested in http://msdn.microsoft.com/en-us/library/ms810668.aspxI tried putting provider keyword as "Provider=MSPersist;" into my connection string...but I received an error message:Microsoft OLE DB Service Components error '80040e21' Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done. Please, say if it is because of MS Access DB or MS Jet provider that I can not save the recordset as XML file.
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Jan 26, 2009
I have a csv file. I read that csv in a recordset using the following
recordset = CreateObject("ADODB.Recordset")
recordset.Fields.append("F", 200, 255)
recordset.Fields.append("P", 200, 255)
recordset.open()
recordset.AddNew()
recordset("F") = arrText(0)
recordset("P") = arrText(1)
What I want is to create two other recordsets and put in there from the original recordset (query)
Dim rs = CreateObject("ADODB.recordset")
Dim Sql = "SELECT * FROM [table]"
rs.Open(Sql, csvrecordset)
MsgBox(rs.Recordcount)
rs.Close()
And then again with a different query to the third recordset. I think it can be done this way. . but how can I define [table] in my original recordset?
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Sep 7, 2011
The purpose of the program is for text to be dragged between boxes to move assets around. I've managed the drag and drop functionality but need to persist the text in the text boxes once the program is shut down so that when reopened, the last location of all moved text is still present.
I've tried the easiest to understand suggestion to get me started but when I build and publish the program it says that I do not have access to the file to save the values!!
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim txtpersist As IO.TextWriter = New IO.StreamWriter("C:UsersHPDocuments
amestore")
[code]....
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Jul 26, 2011
Inheriting from the System.Web.UI.WebControls.WebParts.EditorPart class I have been shown that it is possible to expose a public property in your VisualWebPart that when updated through the EditorPart will be automagically persisted in sharepoint.
The problem I have run into is saving strings and integers works great but when I attempt to persist the value of a collection such as List<String> the object is not saved.
The code looks like this.
Public Class MyCustomEditorPart
Inherits EditorPart
Public Overrides Function ApplyChanges() As Boolean
[Code].....
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Apr 4, 2011
Alright, so here's my basic ASP.NET page setup: I've got a page with a GridView that has ContentTemplates in it. You can add a row and edit/remove rows at any time. There's a "New" button that creates a new row.
All of this data is bound to custom data objects. So if I have a GridView of "People" and each row has "FirstName", "LastName", and "Gender" (with TextBox and DropDown controls), I then have a "Person" object which has public properties for "FirstName", "LastName", etc. I have the binding set up correctly, and I can push data into the GridView from the object, and I persist the object with the Session variable. My page lifetime structure looks something like this:
Page_Load: Loads the List(Of Person) from Session()
Any events fire, and modify the List(Of Person).
After any event, the List(Of Person) gets saved back into Session(), and is then DataBound to the GridView (and any subsequent fields are also DataBound, such as the DropDownList.
My question is: Whenever I fill in rows in the GridView, and then add a new row (there is no database saving going on whatsoever), my fields clear out and don't persist across PostBacks. So, how can I persist my custom data objects with databinding across postbacks?
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Jun 15, 2010
I am trying to have my application be able to read in some ADODB Recordset XML files, but I was told by my boss that I cannot have a reference to ADODB. I do not know how this can be accomplished.
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Feb 21, 2011
Dim List As New List(Of DateTime)
Then in my button click event:
If InputBookinglength.SelectedValue.ToString = "2" Then
Dim paramstring As New StringBuilder
If Session("SelectedDates") IsNot Nothing Then
[Code]....
This code works fine when selecting multiple days in one month. But when you switch to display a different month, the previous months selections are lost. how to persist the selections when the visible month changes.
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Sep 22, 2010
In a MDI WinForm I want to save each child window position and state, per application user, that is different by the logged in Windows user. My application has its own users; so I won't use the user settings like my.Settings... etc.One option is to read/write directly to the database, but I don't like the idea to access the database for something so trivial as the windows positions. The plus is that I could store that information independently by the machine where the user works, wherever she logs in, her preferences will be remembered.Another option, that I'd like to follow, is to use Xml to store that information in a file locally on the user's computer. The structure could be something like:
<form name="form name">
<Top>120</Top>
<Left>100</Left>[code]....
how this could be done; maybe using Linq to Xml? I've found I can write something as simple as
Dim formPos As XElement = _
<User><%= My.Application.connectedUser.id %>
<form1>[code].....
2) How to write the XElement when finished building it. Should I use an XmlWriter.Create? Hot to pass it the XElement?
3) What happens when in the Xml file there's already a node with the same name, I want to overwrite the previous user settings if they are already there, but not append to the file, nor rewrite the entire file, of course.
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Oct 12, 2011
Does anybody know how to persist (save and recall) a structure array when using a custom control? I don't want this data to show up in the properties window but it needs to be available "behind the scenes".
Right now, I'm writing the information to a file but this causes portability problems and may trigger the UAC.
[code]...
How can I persist this without writing to a file? Should I save it to the registry?
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Jul 15, 2009
How do you change an ADODB recordset to ADO.Net recordset?
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Mar 11, 2010
(I've answered the question below with a hack. I'm fairly confident in it unless MS change the way that codedom serializers the designer code.)ETA2:I've worked out what is going on. I wondered why sometimes it would work and not others. It boils down to the name that I give to the internal property and the collection.If I rename the property 'Annoyance' to 'WTF', it will serialize correctly because 'WTF' is, alphabetically, after the name of the collection - 'InternalAnger'.It looks like the serializer is creating instances of objects alphabetically and needs my internal property to be created by the time it comes to create the collection.I can fix this with a rename, but that's a hack and I fear that writing a custom serializer is a big job - which I've never done before.ETA: Jesus, I'm sick of this. This problem was specifically about persisting an interface collection but now on further testing it doesn't work for a normal collection. Here's some even simpler code:
Public Class Anger
End Class
Public Class MyButton
[code].....
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May 23, 2011
why this recordset is read only?
Sub PopMainForm()
Dim rst As ADODB.Recordset
Dim con As ADODB.Connection
[code].....
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Jun 29, 2009
I get the following error when open the recordset: run-time error '-2147217904 (80040e10)' Method 'open' of object '_Recordset' fieldHow to solve the problem
Dim CONN As New ADODB.Connection
Dim RS As New ADODB.Recordset
CONN.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path &
[code].....
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May 4, 2012
I used to work in VB.net and used Dataset's all the time when working with ADO, but now i'm Working in C# and the Research is showing me a lot of Recordsets.
Are they the same thing?
If no what is the difference?
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Oct 15, 2009
how to negotiate a dataset via:
For Each dRow In quanDS.Tables(0).Rows
'do something to each row
Next
I now need to figure out now to loop through a subset of the records returned in the dataset - here's a VB6 example I need to convert:
strSQL = "select * from tblDQ order by xid, xcode, xDOS"
rsMaster.Open strSQL, conDB, adOpenDynamic, adLockOptimistic
rsMaster.MoveFirst
[code]....
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Dec 1, 2009
I added a bindingsource and set the datamember to a table (in access) which has two fields. My bindingsource name is M and the field is usersT. how do i get its value?I tried:
dim tmp as string
tmp=M.item("usersT")
but this doesn't work.
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Feb 1, 2012
I have an application in VB6 that joins 3 tables together to create 1 record set and I am able to use the move next and move previous methods to navigate through the record set.
I am having trouble creating this same scenario in vb.net with a data set. Do I have to create each table individually and then link them together somehow or can I join them all together in a query before I fill the data set?
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Jun 9, 2011
I have a continious Form which opens and shows records of people with whatever criteria the user had chosen the screen before. When the form opens it checks which button was pressed and then changes the recordsource of the continious form.
When I try to edit the records it says "Recordset not updateable". I have done everything I can think of, I have change the type of recordset from dbopensnapshot to dbopendynaset.
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Jul 21, 2009
VB6 code:
Private Sub Command1_Click()
Dim ccw As New ReceiveRecordsetFromVB6_VBNET.Class1
Dim rs As New ADODB.Recordset
rs.CursorType = adOpenStatic
rs.CursorLocation = adUseClient
[Code]...
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Feb 11, 2009
How to sort a recordset using vb 6.0 coding?
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Jun 9, 2010
In this code i have a problem
Dim db As Database
Dim r As Recordset
Dim holder As string
Set db = OpenDatabase("c:database.mdb")
Set r = db.OpenRecordset("record1")
r.movefirst
[Code]...
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Apr 14, 2010
To retrieve data from MS Access database I was using the following code to create a new Recordset. How can we declare it in VS 2008?
Public rs As New ADODB.Recordset
Set MSHFlexGrid1.DataSource = rs
Are the following codes above possible in VS2008?
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Jan 28, 2010
Can i use SQLDataReader instead of a Recordset. I want to achieve the following result in an SQLDataReader.
Dim dbConn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim sqlstr As String = "SELECT Name,Status FROM table1 WHERE id=" +
[Code].....
can i replace recordset with SQLDataReader and if I can can you please show me the changes in code.
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May 27, 2009
how to create a recordset in ado.net?
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Feb 9, 2010
what are the properties of the recordset and its function .
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Aug 11, 2010
Application Type = Windows Forms
DatabaseType = MS Access 2007
I am developing a win form app in vb 2008 combining with ms access 2007 as backend. I am using ADODB.connection and ADODB.Recordset objects.
[Code]...
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Jun 3, 2011
i am trying to save information in to my access database , i created new instance of an ADODB.Connection object and ADODB.Recordset object but visual studio 2005 is given me an error message that ADODB.connection and ADODB.Recordset are defined?
this is my code
Public Class Form1
Dim con As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim str As String
[code]....
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Mar 9, 2011
am trying to save information in to my access database , i created new instance of an ADODB.Connection object and ADODB.Recordset object but visual studio 2005 is given me an error message that ADODB.connection and ADODB.Recordset are definedthis is my code
Public Class Form1
Dim con As New ADODB.Connection
Dim rs As New ADODB.Recordset
[code]......
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Apr 20, 2011
I have a piece of software I am converting to ADO.NET from ADODB. In ADODB I can update a recordset by simply.
Dim rs as ADODB.Recordset
rs = query("select * from tblSomethere where something = something")
rs("something").Value = something.Text
rs.Update()
OR IF I WANTED TO ADD
Dim rs as ADODB.Recordset
rs.AddNew()
rs = query("select * from tblSomethere where something = something")
rs("something").Value = something.Text
rs.Update()
I am confused about to easily accomplish this. I know I can use an insert or update command but it would be much easier to do something like this. NOTE: The query just returns a filled RecordSet, it just executes the command and connection without me having to do it all over the place.
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Aug 14, 2009
I have a recordset rst, that returns the data i require ok. However i wish to transfer this data into an array, and also count the amount of records, as a counter, i.e. 23/312 records.I have tried the way i have used in the past, not .net, of rst.movelast etc, but this doesn't seem to work.
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