Loading Xml Into Combo Box Shows System.Data.DataRowView

May 13, 2009

I've got an xml file that i'm trying to bind to a combo box. i'm trying to save the selected value of the combo to another text box. when my form initially loads, the text box shows System.Data.DataRowView instead of the currently selected value.i've read on other posts that this can happen if you don't have the right column names specified. but i'm pretty sure that's not my problem... because i'm not using string values for names, but referencing them by index. also, the actual combo boxes do display the list of values.[code]...

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System.Data.DataRowView In Combobox?

Mar 24, 2012

I have a problem when i add new data then when i choose course in combobox example i will choose items in combobox "Bachelor of Science Information Technology" then when i save. then the result in course is "System.Data.DataRowView". What should be the correct Codes?

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VS 2010 Conversion Failed When Converting The Varchar Value 'System.Data.DataRowView' To Data

Jul 15, 2011

Im getting that error in the da.Fill(ds)

Imports System.IO Imports System.Data.SqlClient

[Code]...

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Combobox Displays System.Data.DataRowView When Trying To Select The Data From Sql Database

Jun 30, 2011

I got the System.Data.DataRowView when I tried to select the data from sql database. These are my code:

......
myCommand = New SqlCommand("SELECT FirstName +' '+ LastName FROM tblVisitor", myConnection)
myAdapter = New SqlDataAdapter(myCommand)

[Code].....

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Error :Databinding System.Data.DataRowview

Oct 27, 2011

Im using datagridview in asp.net.When im trying to add row using footer template in find error coming up.I have corrected syntax and column is in Database.

<ItemTemplate>
<asp:Label ID="lblMembershipName" runat="server" width ="150px" **Text='<%# Eval("MembershipName")%>' >** </asp:Label> </ItemTemplate> <EditItemTemplate>

[Code].....

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Same Error :Databinding System.Data.DataRowview?

May 25, 2009

Im using datagridview in asp.net.When im trying to add row using footer template in find error coming up.I have corrected syntax and column is in Database.

<ItemTemplate>
<asp:Label ID="lblMembershipName" runat="server" width ="150px" **Text='<%# Eval("MembershipName")%>' >** </asp:Label> </ItemTemplate> <EditItemTemplate>

[code].....

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Dataset - .NET Combobox Displays System.Data.DataRowView?

Jun 29, 2011

I used this code:

myCommand = New SqlComman("SELECT RackName FROM tblRack", myConnection)
myAdapter = New SqlDataAdapter(myCommand)
myAdapter.Fill(myDataSet, "tblRack")
cboRack.DataSource = myDataSet.Tables(0)

then in the combobox i got the display "System.Data.DataRowView".

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Output Error - System.Data.DataRowView / Cannot Convert To Prompt

Mar 17, 2012

I have two checkedlistboxes (chkLB_Sentinel and chkLB_Scourge) binded to my database.I have a listbox (LBPlayers) with 10 players in it (0 To 9) which I fill using the items checked in the checkedlistboxes and the display member is Nickname.Whenever I want a msgbox to popup containing the first player which is 0, I'm recieving the msgbox "System.Data.DataRowView"

I have this simple code:

Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim con As New SqlClient.SqlConnection
con.ConnectionString = My.Settings.MyConnectionString

[code]....

The problem is if I write the msgbox without .toString I get an error "cannot convert to prompt" so I'm obliged to put .toString Why am I getting this kind of error even if I have the DisplayMember binded and how can I fix it ?

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Getting System.Data.DataRowView In Drop Down List As Opposed To Values From Database

Sep 30, 2010

I'm populating a custom dropdown list control on the fly that's tied to data grid using VB .NET 2008. The form will display all the manufactures when the edit button on the data grid is selected.

The dropdown I created works fine. However, when I try to populate the drop down with the respected manufacture values from the database, I only get a value of "System.Data.DataRowView" that being populated in the dropdown list as opposed to my values from the database.

Here's the basic code I use to first create and populate the drop down control:

<asp:DropDownList ID="Manufacturedd" Runat="server" DataSource='<%# m_ItrackerData.Tables("Misc_Manufacture") %>' SelectedIndex='<%# getSelectedManufacture(DataBinder.Eval(Container, "DataItem.Manufacture"))
%>'></asp:DropDownList>

[Code]....

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Combo Box Data Loading?

Mar 20, 2012

which way do you think is best? Using connection As New OleDb.OleDbConnection(My.Settings.CustomerConnectionString & My.Settings.CustomerDatabasePath)
Using command As New OleDb.OleDbCommand("SELECT [customer] FROM [tblCustomers] ORDER BY [customer] ASC", connection)
connection.Open()
Using reader As OleDb.OleDbDataReader = command.ExecuteReader()

[Code]...

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Conversion From String "System.Data.DataRowView" To Type Integer?

Mar 1, 2010

I have 2 forms, frm1 and frm2. frm1 has a combobox, cboLocations and based on what selection is made here, frm2 is loaded and its combobox, cboOffices is populated. I currently have the following code on frm1:

Dim frm2 as New form(cboLocations.SelectedValue.ToString)
frm2.ShowDialog()

When running, I'm getting an InvalidCastException was unhandled...Conversion from string "System.DataDataRowView" to type 'Integer' is not valid." error.

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Forms :: Conversion From String "System.Data.DataRowView" To Type 'Integer' Is Not Valid

Mar 1, 2010

I have 2 forms, frm1 and frm2. frm1 has a combobox, cboLocations and based on what selection is made here, frm2 is loaded and its combobox, cboOffices is populated. I currently have the following code on frm1:

Dim frm2 as New form(cboLocations.SelectedValue.ToString)
frm2.ShowDialog()

When running, I'm getting an InvalidCastException was unhandled...Conversion from string "System.DataDataRowView" to type 'Integer' is not valid." error.

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Loading Data Into Combo Boxes From A XML File?

Aug 6, 2011

I'm looking at loading data into combo boxes etc from a XML file.my xml file is like this

<Cars>
<Car>
<Make>Ford</Make>[code]....

I want to look through each "car" and if it's a ford I want to continue and get the year etc otherwise move onto the next car.

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Loading Excel Data Into .net Combo Boxes?

Oct 31, 2009

im trying to pick up Visual basic on my own with no friends/family that have any programming experience.. I'm struggling (surprise surprise)Heres what I'm trying to do...I have 1 combo box, It will list product names.. Lets say 15 of them.. (I know 15 i could just as easily specify them individually within VB.. but lets assume I NEED to read them from an excel file.(Excel 2003)

Part 1 :Really all i need to know for now, is how do I load an excel worksheet into VB so I can call data up from the cells / rows / columns..

Part 2 : How do I define Which Cells from Each row or column I want to populate into the combo box... Presuming for the "Product name" combobox I have placed each of the 15 product names in the excel file under Row 1, column A through Row 15 , Column A.I want to avoid this and just call the xls file into VB. (Excel will be installed on any computer running this application if that matters. )

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VS 2010 2 Dependant Comboboxes - Error "Syntaxiserror (operator Missing) In Query-expression [Module] WHERE Pakket_ID = System.Data.DataRowView"

Mar 7, 2012

I have 2 comboboxes who are loaded on the formload event with the folloving

[Code]...

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Error - Lable Shows System.Data.DataRow?

Mar 5, 2009

I've been trying to highlight a search result in DataTable. First, I loop through rows of DataTable and call a function to look for a matched keyword to highlight those words, then update DataTable row with a new string with highlighted keywords.I bind the DataTable dtResult to the DataList. It worked fine until I added this code block to SearchDemo function to highlight the keyword :

For i = 0 To dtResult.Rows.Count - 1 Step 1
Dim strTemp As String = dtResult.Rows(i).ToString
strVerse = blHelper.Highlight(s, strTemp)

[code].....

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Binding Combo With Heavy Data - Reduce The Page Loading Time?

Aug 25, 2009

I have combo box being filled with more than 50 thousand records. it is getting sometime to load and bind the data. I am using datatable to bind the data. I tried using data-reader as well but in vain.

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Listbox Returns System.datarowview?

Jan 3, 2011

why does my listbox returns System.Data.Datarowview?can you tell me what i need to change or adjust?

Private
Sub txtAchternaam_TextChanged(ByVal
sender As System.Object,

[code].....

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Data Combo Searching System For Records In List

Aug 5, 2009

In general Combo Box looks for the strings in the list that Start with the text that typed in the textbox portion of combo box.

I want a feature in combo box which do not just look in the starting of the strings, insted they shold search the maching strings within any part of records i.e. If User types 'Ja' in textbox portion, the the list should show following maches with highlighting the mached records

Micle Jackson
Sandeep B Jakhotya
Javid Akhatar
Suresh Jadhav
Jackie Chan like this.

Similar control is already used by Yahoo Web Site for Search Assistance in its Web Search Combo box. Here if we type say 'bush', it will populate following records

george w bush
jenna bush
bush shoe
bush game
hot dog bush

I want the same with Visual Basic for Windows Form Applications.

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Loop To Stop After First Data Loading And Continue On To Second Data Loading After When Button Is Pressed

Jun 2, 2011

an application i developed using vb 2008 express, to fill a web form with data from an access database, one after another when a button is clicked hasn't given me what i expected. the loop was suposed to stop after filling web form with the first data on clicking a button and continue to fill the webform with the next(2nd) data from the database on clicking the button again. Below is the code i wrote

Private
Sub STARTButton_Click(ByVal
sender As System.Object,
ByVal e

[Code]....

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Convert Datarowview Data To String Format?

Jan 16, 2012

I encountered error message "Conversion from type 'DataRowView' to type 'String' is not valid" when listbox1 item was selected. Listbox1 items were imported/binded from Access.

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Forms :: Display Picture In Picturebox1 - Shows This Message, Unable To Cast Object Of Type 'System.DBNull' To Type 'System.Byte[]'?

Dec 24, 2009

Now I want to display picture in picturebox1.To do this I use this codes, but it does not display picture

on this line: Dim arrPicture() As Byte = CType(dt2.Rows(0)("img_path"), Byte())

it shows this message,

Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'.[code]......

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Efficeintly Loading Combo Box List?

Sep 30, 2010

I have 3 combo boxes on a form. They are all going to load the same list. This list is in a database. My first thought was to attach the list to the combo boxes as a datasource. That would require me to create the datasource 3 times to load the same list. To me that seems terribly inefficient. If I attach all 3 combo boxes to the same datasource (list object) then when one cboBox value changes, they all change. So my thought is to load the list once into a list object, then create a loop that loops through each item in the list and adds it to the 3 combo boxes.

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[2008] Loading Form Name From Combo Box?

Feb 18, 2009

on this program you have a ability to choose items from a list lets say

Apple
Blueberry
Cheese

when you push button1 and have selected an Item from the combo box, it launches That form

Dim times As Integer
Dim name1 As String
name1 = ComboBox1.SelectedItem

[code]....

(it used to be Object instead of string when I dim'd name1)

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Multiple UI Thread - Show An Animated Loading Gif Image Till Data Loading Is Completed In All Text Boxes

Jul 13, 2009

I have a window application develpoed in vs 2008, framework 3.5, in which i have put a button.. Now where i click that button the other text boxes are filled up with the data from database thru web service.. what i want is while all text boxes are being filled i want to show an animated loading gif image till data loading is completed in all the text boxes.. i have tried to use image picture box but while data is loading gif image is displyes but in static mode.. cant see animation... i think this is because data loading and animation both are done thru one UI thread..

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Simple Payroll System - Program That Shows Connection Of Database(sql Or Access)

Mar 4, 2010

I think its better if i attach my files for you understand what i wanted to happen in my program.

We are now in our finals and for our project we need to make a program that shows connection of database(sql or access) and vb.net so dont mind if it has a problem in design or anything bcoz the objective of this project is to show what we've learn in our subject IT Programming 1 (vb.net)

I dont know what to do in this part of my program. what to do first? why is it attaching zip files is not allowed?

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VS 2010 : Error - A First Chance Exception Of Type 'System.Data.OleDb.OleDbException' Occurred In System.Data.dll

Sep 2, 2011

I've spent a substantial amount of time trying to figure this out, but I keep getting the same error

A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.NullReferenceException' occurred in project1.exe

This happens when I try to use the DataReader.my code is

Public Function Identification() As List(Of Integer)
Dim returnIndex As New List(Of Integer)
Dim dbCount As String = "SELECT Bookingid FROM bookdetail WHERE Date =" & getCurrentTimeString() & " 12:00:00 a.m."
Dim count As Integer = 0

[code]....

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When Left Clicking Notify Icon On System Tray For Context Menu, Blank Form Shows In Taskbar?

Jul 3, 2010

Simply saying I've added an Notify Icon to my project and then added context menu showing up when the left mouse button is pressed. The problem is that with the context menu some blank form is showing in the taskbar. There is no such form within the project.Does anyone know why it may be happening or how to get rid of the effect? I might add that I have other context menu attached for mouse right click button and it works fine, no blank forms and such showing on the taskbar it's just the left mouse button that works that way.Here is the code that I am using to show the menu:(the visible state to false is necessary for the other menus not to pop up with the one i want... unless anyone knows better method)

Private Sub NotifyIcon_Click(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles NotifyIcon.Click
If e.Button = MouseButtons.Right Then

[code].....

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A First Chance Exception Of Type 'System.Data.OleDb.OleDbException' Occurred In System.Data.dll

Sep 4, 2011

i need to clear this error

A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll

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A First Chance Exception Of Type 'System.Data.SqlClient.SqlException' Occurred In System.Data.dll

Jan 22, 2009

I am just trying to get the system to open a database and I get this error:

A first chance exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll

here's the entire code of the main form
=======================================
Imports System
Imports System.Data
Imports System.Data.SqlClient

[code]....

the error is generated at the open method note* this same code works fine in another computer, the main difference is that this one has a 64 bit OS.

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