Unable To 'configure' A DataTable
Oct 25, 2010
We have a small app that was converted from 2003 to 2005 to 2008. All was fine until i needed to alter the sql associated with a datatable. When i tried to 'configure' the datatable by right-clicking & selecting 'configure', the configure option was not activated. It was decided that what i needed to do was create a new web application in 2008, add the datasets within 2008, then either import &/or cut & paste the old forms & other pices into the new project. However, when i go to configure my new datatable in my new dataset, i have the same problem... configure option is not activated. What can i do to configure these datatables?
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Dec 10, 2009
Is it possible to add a Datatable to the project, add columns to it, and then add rows with data in it that i can use in my project?
I need to store some data in my program and i thought the best way was a datatable, but i also need to add some data that exists in it when i build my pogram.
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Feb 13, 2011
I am fairly new to visual basic 2008 but not to visual basic(vb6). I want to insert a new row in the database table (library.mdb). I connected the database into my project and is bounded by a dataGridview control. I have no problem in getting the records from the database. I used the code under click event of a commandButton, after clicking the button neither the record inserts in the database table nor the program generates any error. The code I used is :
Dim bkrow As LibraryDataSet.Book_MasterRow
bkrow = LibraryDataSet.Book_Master.NewBook_MasterRow
With bkrow
.B_no = B_noTextBox.Text
.ISBN = ISBNTextBox.Text
[Code] .....
Here Book_Master is the database table. LibraryDataSet is the dataset, Book_MasterTableAdapter (not used in the above code) is the TableAdapter. Is there anything missing in the above code? Is there any other method to enter data into the database in visual basic 2008?
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Aug 2, 2011
Unable to select multiple column in datatable [code]....
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Apr 27, 2011
having a couple of issues with this and i don't really know how to fix this
vb.net
Imports System.Data.OleDb
Public Class Form1
Dim cn As OleDbConnection
[Code]....
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Mar 14, 2012
I am building a custom search control in VB.NET and came across a problem getting distinct records into my datagridview. I want to bring exact matches back first so I run 2 of the same query on the same table with a slight difference:
select ... like "code%"
select ... like "%code%"
I have a datatable that I need to get distinct records from; I am append records from a sql query to the end of the datatable so I cannot use a union in sql to return the dataset (I want to preserve the order which the rows are added) I have been using this which is working fine for 2 fields:
dt2 = dt.DefaultView.ToTable(True, "Code", "Name")
But when I have 3 (or more) fields I get duplicates ONLY for the row I am querying:
dt2 = dt.DefaultView.ToTable(True, "Code", "Name", "Initial")
select ... like "initial%"
select ... like "%intial%"
I am clearing the datagridview.source before rebuilding this. Is there a way to get the distinct rows this way or should I just build something myself to remove the duplicates from the second datatable before appending them to the new table?
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Jun 3, 2010
I have a datagrid and set of collection of columns for the datagrid. I have added cloumnname and headertext using column collections in design time. I have made false of autogenerated column. I was unable to load the data in datagrid from datatable. If i remove the collection and add bind data in datagrid means working fine but not for the column collections.VB.net windows application.
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Dec 15, 2011
I have a bound datagrid which I fill from various search options that are available to the end user.Currently I have one of the columns (status) set as a DataGridViewComboBoxColumn with a collection of two items. 'Open' and 'Closed'When the I select for example 'Closed' and hit the 'Update' button an exception is passed with the caption'Update unable to find TableMapping['Tracker'] or DataTable 'Tracker''I have been looking at hope the mapping works for the last 3 hours but getting nowhere fast and I really need to get this project completed by the end of the week.The bound controls are:
Binding Source = BS
Data Member = Tracker
Data Source = TrackerDataSet
[code]...
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Sep 26, 2008
An unhandled exception of type 'System.InvalidOperationException' occurred in system.windows.forms.dllerror in line: dbAdp.Update(dbDset) in btnSave_Click, (elseif editflag = true) blockdescription: Update unable to find TableMapping['Table'] or DataTable 'Table'I was also wondering if I could simply use the ExecuteNonQuery for the delete statement, but since I've placed my data in a datarow, I'm not sure if i can actually use it. Any thoughts on this? Btw, this is my first time using a datarow, and I've recently been studying how to use ADO.net.
dr = dbDset.Tables(0).Rows(CurIndex)
dr.Delete()
dbAdp.Update(dbDset.Tables("addresses"))
[code].....
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Aug 2, 2011
Unable to select multiple column in datatable
Code:
Dim Activitydtb As DataTable = DirectCast(ViewState("TalentcharacterActivty"), DataTable)
grdviewactivity.DataSource = Activitydtb.Select("SELECT
[Code].....
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Apr 15, 2012
The below code was written to bind the datatable to the grid, but i am unable to fill the grid.I am unable to fill the datagrid. [code]
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Jul 15, 2009
I'd like to set the IP address, Subnet mask, gateway and DNS on a windows XP machine though a VB form. I have 2 methods for this. Do everything though VB functions or set environment variables on the machine. I've created a batch file that just uses the netsh command. That works but I'd like the better interface.
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May 16, 2012
I'm using the following code successfully with HTTP but I would like to use SSL. When I change the endpoint address to https and modify the security mode to Transport in the web.config I get the error : "The provided URI scheme 'https' is invalid; expected 'http'."
This is a VB.net test form.
Imports WindowsApplication1.WCFService
Imports System.ServiceModel
Public Class Form1
[Code].....
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Jun 6, 2009
i've trin' to setup in my server, a connection to my Microsoft sql server, in order to develop an web application using this type of tech. Of course, VB.Net. after tryin to research an aspx.net here in msdn, i havent found yet anything.
I have my connection string "on", pointed to Windows Authentication. I've changed to A new login created in Microsoft SQL Management Studio (sql Server 2008), such as a user guest.testing locally, the asp.net develop server is up and running because it uses my domain credentials.If testing by access in my website, like a guest, it throws an execption pointing to a Login Failed. I've tried so, with my own credentials, and not succeded.
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Jun 19, 2009
i need to set up membership for my first website, as i was told i have followed the following steps:1. website --> ASP .NET configuration2. select teh security tab If my admin tool works fine , then it should display the following
1. users - allows to create and manage users2. Role - enable roles3. Access rules - create and manage access rules But my security tab doesnt display those otpions instead it displays an error as:
Code:"There is a problem with your selected data store. This can be caused by an invalid server name or credentials, or by insufficient permission. It can also be caused by the role manager feature not being enabled. Click the button below to be redirected to a page where you can choose a new data store.
The following message may help in diagnosing the problem: An error occurred during the execution of the SQL file 'InstallCommon.sql'. The SQL error number is 1802 and the SqlException message is: CREATE DATABASE failed. Some file names listed could not be created. Check related errors. Cannot create file 'C:VBWEBSITESMEMBERSHIP1APP_DATAASPNETDB_TMP.MDF' because it already exists. Change the file path or the file name, and retry the operation. Creating the ASPNETDB_dbd9891837cf479eab2e5e8a5e483986 database... "
Then i followed it's instructions, clicked on choose datastore and configured the provider, according to the web admin tool the "single provider" passed the test.
Then i closed the adin tool and restarted it. but still the above error occurs. How can i fix this? PS: this happens even when i disable the firewall!
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Sep 4, 2011
how to configure UDL in windows 7?.im using SQL Server Express Management Studio 2005.
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May 17, 2012
Can we configure remoting for the LAN? I studied it halfway but I realised that its for web, but I think it can be possible for LAN too.
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May 9, 2010
i made a browser with vb.net 08 pro i made index.html file as i open my browser it should automatically open the index.html where should i keep the index.html file and how to configure the code?
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Oct 4, 2009
I get the below error Unable to cast object of type 'System.String' to type 'System.Data.DataTable'.This is the code I'm using
Dim str As String = String.Empty
If (Session("Brief") IsNot Nothing) Then
Dim dt As DataTable = Session("Brief")
If (dt.Rows.Count > 0) Then
[code]....
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Jun 17, 2011
Imports System.Net.Mail
Partial Class ContactUs
Inherits System.Web.UI.Page
[Code].....
what is wrong with my smtp settings? i cant send emails.
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Oct 24, 2010
How to configure the proxy for a webbrowser (vb.net)
server has proxy and should login to access internet.
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Oct 20, 2009
i have a DGV that im filling like so:
Dim SQLconnect As New SqlConnection("server=DEVSERVERDEVSQL;" & _
"integrated security=sspi;database=WDA_SQL")
Dim SQLqry As New SqlCommand("SELECT CustomerID, ContactTitle, ContactFirstName, ContactLastName, ActionDate, OpenedBy, LastAccess, Lock FROM CollectionsVIEW WHERE (FileLocal = 'Coll-DL1 Sent') AND (Lock = '1')", SQLconnect)
[code]....
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Jun 21, 2010
I need to holds the common settings for all of the apps ona server (UNC path). Previously I used an ini file on the server and the application was told to look there via a command switch.
I understand that I'm trying to use .net in an old fashioned way by not packaging it for web update & delivery but that's a contraint of the architecture I need to work with.
Is there any way to force my application to use the application.exe.config file from a set location rather than the user data area that .net automatically writes it to? Even if not on a server path, then in the application directory where we can push update it?
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May 25, 2009
I'm not sure how to make it work, anything with sendkeys have errors in it.
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Oct 18, 2011
How can I configure Source Control to work with VS.NET
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May 18, 2010
How to use Datagrid in VB.net. I am about to configure the MySQL Records to the VB.net form having DataGrid. I am using Microsoft Visual Studio 2005 ; Database- MySQL 5.1; Form1 having DataGrid in it. Step by Step procedure to get MySQL Database output in the VB.net DataGrid from beginning to end?
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Aug 4, 2003
how to configure the app.config file in vb.net, especially when I want to set up the smtpmail.smtpserver via it?
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Mar 10, 2010
I have just downloaded SQL Server 2005 express edition from here:To be used as a database for a vb.net program. But I'm confused in using sql server. I do not know where to start from here:If not, where could I create the ms sql database? I'm a beginner and I want to learn.
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Aug 29, 2011
I am building an app that has a number of buttons that will essentially be loading forms into panels.Which button loads which for needs to be user configurable and I am trying to come up with an elegant solution to this.I can hold the user Config and have it load into a datatable; e.g.:
Form Control
Visible Text
Function
[code].....
How do I get the button to pass the configure Form to the Sub
Private Sub btnF13_Click(byVal Sender.Object, ByVal e As System.EventArgs) Handles btnF13.Click
LoadForm(....some sort of lookup that passes back a Form Object?....)
End Sub
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Feb 7, 2012
I have a custom application I am developing in vba. I have written all the code and the only thing I am confused about is how to configure a button to actually "start" or "run" the program. On the form on the user side, the user will type in an item number, then a button will be pushed that brings up a bunch of fields and textboxes on a new small form for the user to enter, The window displays the default values and will update/save new or updated fields and insert it into the database.
The button is designed in microsoft-gp but I have to manually code it to run the program. Right now, when I click the button, the window pops up, but no information is displayed in the textboxes nor are the combobox values being displayed.
Private rs As Recordset
Public Sub Main()
DisplayWindow
'Item Number is the primary field for pulling data
[code]....
When I run these two methods in vba, the information displays on the form and works 100% Now I have to code the button on the original form so this is what I have ; Test = name of the button
Private Sub Test_Changed()
frmItemProfile.Show
End Sub
How can I code the button to run the program properly?
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