Error Message
Object reference not set to an instance of an object.
Dim intBoxNumber As Integer
Dim rbl As RadioButtonList
For Each drv IN dv
intBoxNumber = drv("BoxNumber")
rbl = DirectCast(FindControl("rblPageSandBox" & intBoxNumber), RadioButtonList)
rbl.Items.FindByValue("intPageSandBox" & intBoxNumber).Selected = True
Next
I have 20 radiobuttonlists which are dynamically created - then declared when a form is submitted. I also have some code which totals the number of answered questions and the total value of the answered questions. - this code used to work when the radiobuttonlists were hard coded into the page, but it now does not. - I am writing the number of questions answered and the total value of all answers to the page but they come back as 0. Why this might not work now that the radiobuttonlists are dynamically created.?
Code behind:
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
For i As Integer = 1 To 20
Dim TableRow As New TableRow()
Dim TableRowCell_1 As New TableCell()
TableRow.Cells.Add(TableRowCell_1)
[Code] .....
I am dynamically creating a table which places a dynamically created radiobuttonlist in each row.
I then want to display the results on the page when the submit button is clicked.
I am getting an error message stating that
'question1' is not declared
Why might this be happening?? I've included all my code below.
Code behind:
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
For i As Integer = 1 To 3
Dim TableRow As New TableRow()
[Code]....
I am writing tests for flights. I need to select dates between 30th march 2011 to 30th april 2011. for departure and return flights.
View 1 RepliesI have two DataTables, PersonInformationDataTable on which i only know about a "CityName" field, and another CityInformationDataTable, which has a few constant fields and i do a query like
ResultOfQuery = From person As DataRow in PersonInformationDataTable
From CityInfo As DataRow in CityInformationDataTable
Where (person("CityName) = CityInfo("CityName"))
Select ?? all person info ?? , Country = CityInfo("Country"), Tongue = CityInfo("SpokenTongue")
I would like again all the person fields with their values in the enumerable result.
the result would be like : name=. I don't know how many fields or the fields name of PersonInformationDataTable in advance. With a SQL Query, i could write a string with a loop on CityInformationDataTable columns and have a custom select string like : "Select Name,
I have a group of images in my My.Resources. I want to select select images to display dynamically at run time. How do I do this?
'Static (Compile time) Assignment
UltraPictureBox1.Image = my.Resources.zoo_picture_1
'Dynamic (Runtime) Assignment
[code]....
I am coding a public sub routine that clears all textbox fields in a form. I want to call/reuse this sub routine everytime i want to clear all textfields in any form in my program.
I can create a collections of all textbox objects in a form and loop on each of them to clear their textfields.
My _PrefillWizard method actually works for all the controls on my page except for those which are dynamically populated. The CheckBoxLists are such because they are automatically generated based on selectable values in a table in my DB. I already have this control in my markup like so... how do I force this to load and be ready before running my other code?[code]...
View 2 Replieshow I can select a row and column dynamically in EF4? (VB).A bit like a map, I want to navigate through the data using x and y axis to pull out one fields value,SQL would look like this
SELECT " & MyColumbVariable & " FROM MyTable WHERE MyRow = " & MyVariable & "
I'm developing an application to allow engineers to conduct simple single table/view queries against our databases by selecting Database, Table, Fields.
I get how to use the Dynamic LINQ Library Sample to provide for dynamically selecting the Select, Where and Order by Clauses at runtime but I'm at an impass on how to allot for table choice.
Is there a way to provide for dynamically selecting the "from" table at run time
EDIT
So Both of the answers seem to be saying the same general Idea. I'm going to try to convert the C# into VB and get it to work.
The first answer converts to
NotInheritable Class DataContextExtensions
Private Sub New()
End Sub
[Code].....
I have a RadioButtonList wich contain 4 radio buttons A,B,C,D
RBQ.Items.Add("A")
RBQ.Items.Add("B")
RBQ.Items.Add("C")
[code].....
I'm dynamically creating a RadioButtonList and can't figure out how to add additional text to show up under the radio button.My basic code is as follows and I want sURL to show up under each resultant radio button.
For i As Integer = 0 To ds.Tables(0).Rows.Count - 1
Dim iLocationID As Integer = ds.Tables(0).Rows(i).Item("LocationID")
Dim sStreet As String = ds.Tables(0).Rows(i).Item("AddressStreet")
[code].....
Is it possible to have a QueryExtender use a value from a RadioButtonList to filter results? Here is my current code:
<asp:QueryExtender ID="QueryExtender1" runat="server" TargetControlID="EntityDataSource1">
<asp:PropertyExpression>
<asp:ControlParameter ControlID="rblFilter" Name="business_done" />
[code]....
I want to change the CssClass for the RadioButtonList while populating the theRadioButtonList. I don't know how to access the radio button while binding the list. do I need to use DataBind or DataBounding event ? and how ?
View 1 RepliesI tried
Dim theme = rblTheme.Items(rblTheme.SelectedIndex).Value
getting first value selected
Dim theme = rblTheme.SelectedItem.Value
getting first value selected
[code]....
Getting both value selected.
I have 20 radiobuttonlists on a page. Each has 4 options with values 1, 2, 3 and 4.What I need to do is on submitting the form, get the total value of all the radiobuttonlists (eg 3+1+2+3+4...) divided by the total number that have actually been filled in (none of them are required fields so anything from 0 to 20 of them could have been filled in) - hence getting an average value.
View 1 RepliesI've got a strange questions and more than likely a simple answer so here goes.I have created a few web forms that hook up with a table and save the values of the selected radiobuttonlists. In a few cases there may be a few listitems that have the same value but different text such as
[Code]...
I got this in another post <asp:RadioButtonList runat=server ID="rd" SelectedValue='<%# Bind("sex").GetType() == typeof(DBNull) ? null : Bind("sex") %>'
<asp:ListItem Text="male" Value="1"></asp:ListItem>
<asp:ListItem Text="female" Value="2"></asp:ListItem>
</asp:RadioButtonList>
Is this a correct syntax?? If yes can someone please give the VB version of it??
SelectedValue='<%# Bind("sex").GetType() == typeof(DBNull) ? null : Bind("sex") %>'
What im trying to accomplish is I have a table which im creating dynamically and I want in the first tablecell a radiobutton, second tablecell first name, third tablecell last name.The second and third tablecell work fine but having trouble with the radiobutton. Im making it a radiobutton list b/c only one name should be selectable. Below is how im creating the radiobutton list. I have omitted the second and third tablecell as its working properly. The yesNo variable is used to say i
tblrow = New TableHeaderRow
tblcell = New TableCell
If yesNo = "yes" Then
[code].....
How to read those selected items using datareader and make the radiobutton enabled in the list.
View 1 Repliesi just want the RadioButtonList without the radio button on it, i will code the rbl so that selected items have a different background color and make it look more professional, the radio buttons themselves i want to be able to get rid of in terms of apperance... if you know of any way to do it,
View 3 RepliesI have 20 RadioButtonLists on a page.
I need to create a validation method to ensure that at least one of these RadioButtonLists has an item selected.
What kind of validation would I need to use for this?
The below code doesn't work becuase I need to somehow feed the DataText and Value fields. I need to somehow amend the code to allow me to populate my RadioButtonList and to fit inside my 3-tier architecture. My first time doing this so I'm a little lost.
' rblAnswers.DataTextField = dt.Columns(1).ToString
' rblAnswers.DataValueField = dt.Columns(0).ToString
'Calls
[code]....
I have a radiobuttonlist with two items, Yes or No. The radiobuttonlist control has a customvalidator that needs a servervalidation function and a javascript clientvalidationfunction. Could you help me? The function in this message works but only when i actually have choosen one of the two listitems, when no listitem is selected the validation skips my radiobuttonlist control.
function ValidateRadioButtonList(source, arguments) {
var RBL = document.getElementById(source.controltovalidate);
var radiobuttonlist = RBL.getElementsByTagName("input");
var counter = 0;
[code].....
This is in ASP.net iwth VB.I have a quiz project that I've been assigned for work.This quiz project contains two main SQL Databases it pulls the info from. First is a Quiz table, which contains three columns: QuizID (Pri Key), Title, Description. This is where I declare the quizzes, indicated by the QuizID (1, 2, 3....etc)
The second table is the Questions table, containing the following columns: QuestionsID (Pri Key), Title, Answer1, Answer2, Answer3, Answer4, Answer5, CorrectAnswer, QuestionOrder, QuizID....The QuizID in the Quesitons table matches the QuizID in the Quiz table.Thus for QuizID = 1, it consists of all the questions with the matching QuizID in the Questions table. The CorrectAnswer I want to assign a simple value (1, 2, 3...etc).I need a way to take a set of questions (based on the QuizID) put them in some sort of table and randomize them (or rather shuffle them) so that each time this quiz is taken, it pulls all questions randomly, but not repeating any)...I then want the code to pull the question and coorepsonding answers to pick from in a radiobuttonlist. However, It only needs to pull the number of answers. Example, a True/False will only have Answer1 and Answer2. The other Answers will have the NULL value in it.
There needs to then be a way to go through each one of these questions that have been placed in the table (in that random order) using a "next" button. When a question and possible answwers are displayed, I alaready have code to keep the answers in the session to grade it at the end (using correctAnswer and selected answer.I have no specific way to bind the data to the Database. I have used SQLDataSource to make other connections before, but I don't know if this is the best way.
I have a form with contains, among others, a TextBox called "wmi_cell_phone" and a RadioButtonList "wmi_send_sms". Basically, I need to create a validator that checks whether the value of the selected radio is "Y". If this is the case, then it checks if the TextBox value is empty or not. If it is empty, then it should notify the user to enter a value.
[Code]...
I am trying to make a webform that will act as a "wizard". My problem is how to get the program started e.g. I want to ask the user a question and have them choose a radio button, then have them click a next button. when the user clicks the next button I want to use the radio buttons as a condition so for example if the user selected the "yes" radio button then the program will display some new labels and textfields or radio buttons and so on.
View 3 RepliesI'm not sure if the question properly asks what I want, because I'm a bit new, but what I am trying to do is write a sub or function that I can run when a label is clicked, and I want to to be reusable on multiple labels. There will be 12 in total, and I don't wish to write the same thing over and over, with slightly different characters. A programmer never wants to write the same thing twice, right? Also, something else is making it a necessity to do it dynamically.
So, how I was trying to accomplish that was by using a string, and adding the name of the label to the string on click.
click1 = "Label1"As it turns out, you can't just say click1.Text and return the text of Label1. The reason it's important to do it implicitly is because I need to somehow remember the one I clicked before, to compare the first click and second click, and if they match, do A, and if they don't match, do B.
To get the row index of DataGrid when change(asp:radiobuttonlist) occur in row of the TemplateColumn
<asp:DataGrid ID="dgTier2" runat="server" AutoGenerateColumns="False" Width="578px"
Height="83px" OnItemDataBound="dgTier2_ItemDataBound">
<asp:BoundColumn DataField="TypeID" HeaderText="TypeID">
</asp:BoundColumn>
[code]....
After changing the rediobutton selection to get the Rowindex of the changed row.if at all change happens in many rows i need make the collection of the Rowindexs.
On my .aspx page i want to be able to show and hide certain panels depending on user selections (radiobuttonlists).
For example in my aspx page i have;
<form id="form1" runat="server">
<asp:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True">
<asp:ListItem>1</asp:ListItem>
[Code].....