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Mar 15, 2012

I'm having some problems calculating the values for two diferent fiels of the datatable. it return " Object reference not set to an instance of an object"this is How I feed the datatable

Dim daProd As New SqlDataAdapter
Dim conProd As New SqlConnection
conProd = Connect()
Dim cmdProd, cmdSave As New SqlCommand



Loop Datatable And Select Checkboxlist Item Based On The Datatable Field Values

Aug 18, 2011

I 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 


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Mar 15, 2009

I am trying to use the value of a field of the last row in a table. I have been trying to use tables().Rows().Item() but somehow it always returns the value of the first row instead of the last one. here is the code:
Dim accion As String
Label1.Text = ""
Label2.Text = ""
Label3.Text = ""
[Code] .....

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Mar 8, 2010

I have tried:

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ObjDTOleDBNFeIntegra.Rows(I)("'Cnpj Cpf'").ToString() //with apostrophe
ObjDTOleDBNFeIntegra.Rows(I)("Cnpj Cpf").ToString() //without anything

I'm using VB.NET, but comments with apostrophes in here don't seem to be identified.And I get the exceptions for each case:

Column '[Cnpj Cpf]' does not belong to table Table. (fail)
Column 'Cnpj Cpf' does not belong to table Table.    (fail)
Column ''Cnpj Cpf'' does not belong to table Table. (fail)

What should I do in order to ger a value from a field in a dataTable when the column name has spaces ?

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I have a field in a datatable (dt) that can be integer or NULL.

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I have a "For
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It looks to me like the proper way would be to use something like the following:
Dim saveCatalogWorkID As VariantType
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Next clsWTRow

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Feb 7, 2011

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I'm working in creating an web application. I have an SqlDataSource and a GridView on my page.

I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...

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Apr 21, 2010

I 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
Friend Function CreateTable(ByVal tableName As String) As Boolean
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this however produces the following error on line 3


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get_item_list is the parameter passed into this function (tableName)

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Apr 16, 2012

I came across a problem with using a BindingSource as my DataGridViews.DataSource. Whenever I applied a filter to a column in the BindingSource and the user makes changes that don't match the column filter the DataGridViewRows would automatically disappear. A similar thing would happen when applying a Sort to a column. If the user made any changes the DridGirdViewRows would automatically sort causing rows to be moved around. This was not ideal for my application and there isn't anyway to stop this from happening with the BindingSource.

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Manager 1
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Field Staff 2
Accountant 3
Manager 4
Manager 1
Administrator 6
Field Staff 4
Manager 0.5
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Resource Hours Used
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Here is what I tried.I have looked at examples by MS but they all just write to the screen and I have no interest in that.

For Each rowWork In foundRows

"LineOfBusiness = 'CPP'"

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Dim newTable As New DataTable
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