Is it possible to pass adodb.recordset from VB6 to datatable? Just thinkin', I have created a dll from VB6 that is returning a record, in the future I want my .net apps to call from it. Or I have to build a new one from .NET?
View 4 RepliesI have some code from this site CodeProjectLink to convert a datatable to a recordset. This code had been working fine until I changed to .NET 4 (was previously 2), now when I call the following line:
Dim result As New ADODB.Recordset()
result.CursorLocation = ADODB.CursorLocationEnum.adUseClient
Dim resultFields As ADODB.Fields = result.Fields
Dim inColumns As System.Data.DataColumnCollection = inTable.Columns
For Each inColumn As DataColumn In inColumns
[Code] .....
I tried changing my line to just:
resultFields.Append(inColumn.ColumnName, TranslateType(inColumn.DataType))
But this gave the same error. The TranslateType function is correctly returning ADODB.DataTypeEnum.adVarChar so this seems valid as well
I have a winforms application connected to Mysql using the.Net driver. I written a class to handle to all the database functionality. I use a dataTable to store query results for binding from mysql.
Imports MySql.Data.MySqlClient
Imports System.IO
Public Class MysqlConSjC[code]......
This method does a select query. How would I write a method to insert/update/delete rows of the DataTable in the database?
I have a form that contains a DataTable variable (dt) that has a RowChanged event assigned to it. I use a UserControl (DataGridViewFilterAndSorter) to get a subset DataTable from dt. I need dtSubset to have the same event as dt. How can I do this?
In other words, I need to pass the dt event to the DataGridViewFilterAndSorter class and store that event as a class level variable. How can I do this?
Public Class frmCalculatedResults
Private dfs As DataGridViewFilterAndSorter
Private WithEvents dt As DataTable
[Code].....
how to Pass datatable as a parameter to a SQL Server stored procedure
View 3 RepliesHow do you change an ADODB recordset to ADO.Net recordset?
View 4 RepliesI have an object called Result<T> that has a constructor which accepts an argument of IEnumerable<T>. I'd like to be able to pass in a datatable if possible.
I tried datatable.AsEnumerable(), but where I bind to the data it was complaining that 'MyProperty' is not a field or property on type 'DataRow' - which makes sense since 'MyProperty' isn't a property on 'DataRow', but it was a column in my datatable.Is there a way to convert a datatable to something that I can pass into the Result object and still have it bind to, say, a gridview?
I have two tables:
table1
case_no flow result
tc_1 001 pass
tc_1 002 pass
tc_1 003 pass
tc_2 001 pass
tc_2 002 fail
tc_2 003 pass
table2"
case_no result
tc_1 pass
tc_2 fail
Table2 should be updates from table based on the results... If all results is PASS then the table2 should be updated as pass... if any result is FAIL then the entire case_no should be updates a s fail..
This code was working consistently, but now...This code works on the first pass.Then second pass it just hangs on Code:Dim tcpClient As TcpClient = tcpListener.AcceptTcpClient() for about 2 minutesThen the code will fork for another pass, then fail.....
Code:Imports SystemImports System.TextImports System.Collections.GenericImports System.XmlImports System.Xml.LinqImports System.Net.Sockets
[CODE]....
Just started VB programming this week and have found a wealth of information about what I'm trying to do. Problem is, some of it is more complete than others.Here's what I'm trying to do:In Form1 (my main form), I want to instantiate a class that contains a couple of properties (speed setpoint and position setpoint). When I click a button, I want to pass this data to Form2 and populate two textboxes on Form2 with the properties of this object. I want to manipulate the property values on Form2 and click an OK button which closes the dialog and returns the manipulated data, updating the property values of the object. Here's the algorithm I'm following:1) On Form1, instantiate the class2) On Form1's "Pass Data" button click event handler, instantiate a Form2 object and invoke the ShowDialog method, passing the object as a parameter.
3) On Form2, overload the ShowDialog method to accept the object as a parameter and modify the method so that it returns the manipulated class data.4) On Form2, in the ShowDialog method, populate the textboxes with the class data that was passed in.Here's where I get stuck. If I press the OK button on Form2 (DialogResult.OK), it returns me to Form1, but what hook do I have in Form1 to receive the manipulated class data that the ShowDialog method is returning?Here's an example of what I'm thinking about:
Code:
Public Class Form1
Dim clsController1 As New MotionController
[code].....
I'm sure it's probably a very elementary question, but every explanation I've found seems to be incomplete.
why this recordset is read only?
Sub PopMainForm()
Dim rst As ADODB.Recordset
Dim con As ADODB.Connection
[code].....
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].....
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?
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]....
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.
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?
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.
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]...
How to sort a recordset using vb 6.0 coding?
View 2 RepliesIn 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]...
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?
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.
how to create a recordset in ado.net?
View 10 RepliesI am trying to display value of the field ("UserID") for every row exists in datatable to checkboxlist(make the checkboxlist item selected).
I used for loop, but only the field value from last row of RoleUsers table is selected in the checkboxlist.
Here is my code
Private Sub DisplayRoleUser()
Dim conn As SqlConnection
Dim cmd As SqlCommand
[Code].....
I have a datatable and I apply a filter to the defaultview.rowfilter property of that datatable. If I then loop through the rows collection of the datatable, will I only be able to see those rows that the filter applies to, or will it loop through all the rows?
View 6 RepliesI am working on a project that takes an xml schema and xml data files and places them into a DataTable, the 2 files are generated from a working table that i have written to disk. I wish to load these 2 files into a DataTable. Here is What i have
vb.net
Friend Function CreateTable(ByVal tableName As String) As Boolean
Dim table As New DataTable(tableName)
table.ReadXmlSchema(tableName & ".xsd")
[code]....
this however produces the following error on line 3
Quote:
System.ArgumentException was unhandled Message=DataTable 'get_item_list' does not match to any DataTable in source.
get_item_list is the parameter passed into this function (tableName)
what are the properties of the recordset and its function .
View 2 RepliesApplication 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]...
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]....
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]......