Web Forms :: Add Eventhandler To Radiobuttonlist Dynamically To Retrieve Selected Value?
Feb 24, 2010
A new route to an old problem for me... I'm creating radiobuttonlists and adding them to an update panel dynamically using this code:
[Code]....
I'm wanting to get the selected radio button value whenever a button on the page is pressed, however (and this is my old problem) I cannot retrieve that value. What I'm wanting to try is to add an event that will record the chosen radio button whenever the selected value has changed and store it into an array.
How can I get the selected value of a radioButtonList if this is created dynamically? I know that a dynamic control must be recreated on each postback but, is there a trick to solve this scenario?
I have a radiobuttonlist inside a datalist itemtemplate and i need to bind the radiobuttonlist dynamically from database I have tried to bind it inside itemdatabound event of datalist but it the result is always duplicated according to the fields in teh database.
for more information:
the database has two columns one for questions and the other is for choices , for the first question with id lets say 1 there are 4 choices, when the radiobutton is binded the result appears to be 4 times duplicated ?
I am banging my head with gridview at the moment. There's a problem I just can't get my head around. I'd be very greatful for any advice given. I have a function that creates a DataTable with three columns and four rows. In each of the cells I set the text to a random number through RowDataBound event. I would like to just make the cell clickable and have a code-behind function that gets the position of the cell (column, row) and the value of the cell when the user clicks it.
The scenerio is I have a UserControl. This user control will create dynamically ListBoxes if the given List's count > 0. The controls are adding dynamically, there is no problem with adding them, but the event handler is not adding. If I select an item in first listBox, the secondListBox will be added dynamically, and items will add dynamically too. First listBox appears, but the selectedIndexChanged event handler doesn't work. What can be the problem with my code?
I am experiencing the "Input string was not in a correct format." error and I have no clue how to fix it.
I have a radiobuttonlist and a submit button, the radiobuttonlist is dynamically bounded to a datasource. when user clicks on the submit button, I am trying to retrieve the selected value in the radiobuttonlist, but somehow the radiobbuttonlist selectedvalue is null. How to retrieve the selectedvalue for the radiobuttonlist?
The aspx form code is as below:[Code]....
aspx.cs code: [Code]....
The form displays the radiobuttonlist listitem value without problem. However, the rdChoice.SelectedValue is null.
I´m using a Repeater to generate Items out of a Database. Each ReapeaterItem should include an UpdatePanel, because i have to Update the Controls inside the UpdatePanel and do not want to reload the complete page. Inside these dynamically generated UpdatePanels (each RepeaterItem has one) i´m adding up to three Checkboxes dynamically (based on the Database). These Checkboxes need to fire the "CheckedChanged" event, because on some conditions i want to enable/disable/check/uncheck Checkbox1, 2 or 3 based on business logic. ... Hope you got this so far. I´m adding all Controls and have the EventHandler Added. But the generated Code does not reflect the Event Handler. I tried OnItemDataBound, OnItemCreated, PreRender, ... Events to add the Eventhandler too, but i was not able to find the CheckBox-Control with the ID.
I´m totally lost with this and on the way to use Buttons instead of Checkboxes. From what i read so far is that with Buttons i can use the CommandName from the Button and the ItemCommand-Event from the Repeater to get a workaround, but then i need to reflect the "Check" on the Page in some way. btw, every Repeater (8) sits inside an ajaxtoolkit-accordion control. Here i give you some Code:
I have a web form(C#) which has many radiobuttonlist controls. For each control there is a corresponding field in a sql server database table. And finally there is a submit button.
I have 2 radiobuttonlist in a web forms, each contains of 4 ListItem. So there are 8 ListItems in total. It is initialised such that none of the ListItems is selected. I want to validate that at least one of the ListItems is selected when submit button is pressed. How to do it? i.e. at least 1 ListItem is selected, either from radiobuttonlist1 or radiobuttonlist2.
I have 2 radiobuttonlist in a web forms, each contains of 4 ListItem. So there are 8 ListItems in total. It is initialised such that none of the ListItems is selected. I want to validate that at least one of the ListItems is selected when submit button is pressed. How to do it? i.e. at least 1 ListItem is selected, either from radiobuttonlist1 or radiobuttonlist2.
Now suppose if 3 questions are displayed on the webpage then 3 radiobuttonlists are displayed. I need to send the selected text of radiobuttons separately in my table in SQL Server on a button click event.
Suppose if selected answers are Very Poor, Average and Good then database entry should look like:
1Â Â Â Â Â Â Â Â Very Poor 2Â Â Â Â Â Â Â Â Average 3Â Â Â Â Â Â Â Â Good
(.aspx.cs file)
protected void AddComment(object sender, EventArgs e) {           string constr = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; string sqlStatment = "INSERT INTO FeedbackResponse(QUESTION_ID,RESPONSE) values(@QID,@RESP)"; using (SqlConnection con = new SqlConnection(constr)) { using (SqlCommand cmd = new SqlCommand(sqlStatment, con)) { con.Open();  cmd.Parameters.AddWithValue("@RESPONSE",this.rptComments.   cmd.ExecuteNonQuery(); con.Close();               } }
im having a quizz (a question and multiple answer related to the question) , i use an asp repeater to display the questionand a nested radiobuttonlist inside the item template for the related answer:
[Code]....
I do bind the the radiobutton on itemDatabound, i need to store the answer selected by the user, for that i used the following method:
[Code]....
but the rptAns referring to the radiobuttonlist (there is only one quiz at a time), the selectedindex always remain at the first index even when the user does change the selected radio button.i have made a check when on item databound to see if the page is a postback before opulating the radiobuttonlist.
