Dynamically Created HTML Form
Dec 6, 2011
I am beginning to write a dynamically generated, database driven form. It will be split into several sections, each section having a "next" button, that will save the current section and proceed to the next.
Ive not begun yet but as its generated dynamically this will all be on the same page and either postback, or redirect to itself and the questions will be loaded into a repeater, choosing the input type based on whatever in the database.
My problem is that one section of the form works slightly differently.
I need to ask all the names and birthdates of everyone who lives with you, so I would need the form fields, an input button and then when pressed save the data and load into a repeater, which will have its own delete button as itemcommand.
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Jan 24, 2011
I am coding online sales a website but I've a problem on main page I have to show products I made it as 4 columns table but there is over than 100 product and i need paging for that. How can I fix it like 20 products per page.
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Apr 17, 2010
We are creating html Table dynamically on the basis of data fetched from database and assigned id to each Cell while creating them dynamically. But the problem is how to access values in Cell. Because we are not able to get id of Runtime generated TD.
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Jun 15, 2010
I add HTML and tags to Page dynamically. But after every postbost, all values are empty. What can I do for Solve?
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Jul 29, 2010
I am trying to allow for multiple selection check boxes that are created dynamically.
The Following code is written for each row in the dataTable (I print it as HTML code)
<input type='checkbox' name='multiCheck' id='chk{1}' value='{1}' runat='server'/>
however, on the server side (after postback) I can't read them from the Request Object. How do I "mark" them so I can read them at the postback?
protected void DeleteSelection_Click(object sender, ImageClickEventArgs e)
{
int multiIdsToDelete = Request.Form["multiCheck"]; <-- In the Future will be added to an array so I can do the delete for each row selected.
}
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Nov 17, 2010
Im dynamically creating several dropdowns onclick of a button... but the dropdown returns null when im trying to get the values on submitting the form... i read tat during postback all dynamically created controls will be lost... s there a way to register the controls... i want to access the item selected in the dropdown .... expecting a positive reply...
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Dec 16, 2010
I have an html table with rows and cells. And I have dynamically created a label and would like to assign the label to one of the cells of the table. What I am doing is I have a JavaScript which executes a code behind method and it would not accept an already created asp.net label. So I have created the asp.net label programmatically but cant assign it to the table to display the text value of the label. Below is the code:
[System.Web.Services.WebMethod] public static void EndCandiateTest(){
try { totalTestMarks = ts.RetrieveResults();
grade = tsp.RawScoreAndGrade(totalTestMarks);
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ts.ShowResults(testResults);
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} }
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messageLabel.Text = results;
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Sep 28, 2010
I'm creating an quiz application which queries the database and extracts the questions and choices. I use dynamically created controls such as a checkbox list and fill the values dynamically. How do I do this? Right now I have these functions:
array_random_init(); this creates a 10 element integer array from 1-20 - extract_question(i): this extracts a question indexed at i in DB, I created the controls and set the appropriate text in this function. - validate_question(i); this is called by button_click and validates the question i according to DB.
I understand I have to recreate the controls in Page_init on postback, but what should it look like? Do I need to add "if IsPostBack" in page_init, or do I create the controls in page_init() and reset their properties in page_load when I use extract_question(i)? Also, I cannot seem to clear the selected boxes on postback, I added page directive "enableviewstate=false" but it doesn't work.
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Feb 14, 2011
I have a website that sales associates access to view account information with clients. S.A's can only view information for accounts that they are tied to. Some clients have more than one account, S.A's can be tied to more than one account, but not all accounts of one client need to be tied to one S.A.
On the account info pages, I have account numbers (dynamically displayed labels) displayed of other accounts that the account client is associated with, which the S.A's can see. I'm modding this so that if the S.A has viewing permissions of any of the other accounts on that list of accounts, that instead of a label being displayed, a button directing them to that account page will display instead. In order for this to work, I have to attach a security function to the button, otherwise the page will blow out on the S.A's.
So I'm running a piece that is displaying a button instead of a label, which is working fine. My problem is when I try to attach the security event to the dynamically displayed buttons. It seems that the page just posts back and doesn't execute my code at all.
On my Page_Load, I'm running this after the buttons and labels are displayed:
For x = 0 to tblAccountList.Rows.Count - 1
'use a try to target the button, use catch to handle if it's instead a label, only one cell per row.
Try
Dim accountLink as Button = tblAccountList.Rows(x).Controls(0)
Addhandler accountLink.Click, AddressOf Me.PermissionViewCheck
Catch ex as InvalidCastException
Continue For
End Try
Next
I don't have any code checking for postbacks or anything like that, but the "PermissionViewCheck" event never fires and just reposts the page.
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Mar 18, 2010
how can i passing a value form ActionResult to html.textbox or Html.TextBoxFor in View
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Nov 11, 2010
I have been experiementing with the annonymous types in C#, and am wondering if it would be possible to have a 'dynamic key' in the annonymous object.Here is what I have so far:
[Code]....
[ { "monday": true } ] what I am getting: [ { "temp": true } ]Is there a way to have the object's 'key' be dynamicly created? What I want it to be able to send the KeyValuePair's key as the object's key. Is this possible?
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May 24, 2010
I'm trying to get the value of a dynamically created radiobuttonlist via javascript to call a pagemethod.
This is how I'm creating the rbl:
rbl.Attributes["onclick"] = "javascript:preview('" + rbl.ID + "','" + rbl.ClientID + "');";
And this is the javascript:
function preview(controlid, clientid)
{
var radio = document.getElementsByName(clientid);
var answer = "k";
for (var ii = 0; ii < radio.length; ii++)
{
if (radio[ii].checked)
answer = radio[ii].value;
}
PageMethods.SaveAnswer(controlid, answer);
}
The problem however is that I want to get the groupname of the radiobuttionlist so I can use getElementsByName, but i have no luck so far.
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Feb 15, 2010
I'm creating 14 textboxes for every day in a month and user can select the month so i have o create them dynamically. But i can't reach the values in the textboxes.
When i don't create them dynamically like
<asp:TextBox ID= "TextBox1" name="TextBox1"> </asp:TextBox>
I can get the value from the C# side by using the
((TextBox)Page.Form.FindControl("TextBox1")).Text
However this moethod doesn't work for the textboxes that i created dynamically. I'm creating them in a loop it's something like;
[Code]....
Then i add the text box to the necessary places at my table.However i can't reach the textboxes when i use the same method
((TextBox)Page.Form.FindControl("!A uniqe ID!"));
It gave a null value...
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Jul 20, 2010
I have a tree view with checkboxes for leaf nodes. If i click on checkboxes, I am creating some html controls dynamically. And in other static button click event I need to get an ID's of those dynamically created controls.
My Code is:
.aspx
<asp:Panel ID="pnlOuter" runat="server" Visible="false" Width="650px">
<table>
<tr>
<td>
<asp:Label ID="lblQtnrName" runat="server" Text="Questionaire Name"></asp:Label>
<asp:TextBox ID="txtQtnrName" runat="server"></asp:TextBox>...
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Jun 21, 2010
I will have to retrive data from database assume this is the data I got
|No | Name|
46 ANN
24 LISA
20 JOAN
41 JACK
and so on. I will have to create checkbox dynamical by these data like this
checkbox ANN checkbox LISA checkJOAN
checkbox JACK
I will create a container and then create checkbok , then add control to container.. my problem is how to give it a break each 3 controls? and how to format them like this
<TR>
<TD width =33%>
checkbox ANN
</TD>
<TD width =33%>
checkbox LISA
</TD>
<TD width =33%>
checkbox JOAN
</TD>
</TR>
<TR>
<TD width =33%>
checkbox JACK
</TD>
</TD>
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Jun 5, 2010
In my code behind (c#) I dynamically created some RadioButtonLists with more RadioButtons in each of them. I put all controls to a specific Panel.What I need to know is how to access those controls later as they are not created in .aspx file (with drag and drop from toolbox)?
I tried this:
foreach (Control child in panel.Controls)
{
Response.Write("test1");
[code]....
"test1" and "test2" dont show up in my page. That means something is wrong with this logic.
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Nov 18, 2010
I know this question has been asked thousands of times, and I've struggled with it before, but for some reason, I can't accomplish what I want to accomplish... I have a dynamically added LinkButton that when clicked will dynamically add a control (in this example, a textbox) to the same panel. The intent is to continuously add on as many controls as times the LinkButton was clicked (i.e. I click it once, one box, then another click will give me 2 boxes, another click adds a 3rd). In the code below, I use the current date and time serialized to create a unique ID for each textbox control.
When I execute the code, clicking "Add Filter" will generate a new textbox, but once clicked again will create a new one, and dispose of the one before it. Instead, I want to persist the previous textbox as well as any data submitted within it.In the aspx:
<asp:Panel ID="pnlFilter" runat="server">
</asp:Panel>
In the aspx.cs:
protected void Page_Init(object sender, EventArgs e)
{
LinkButton lb = new LinkButton(); [code]....
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Jan 25, 2011
I want to preserve the dynamically created control when postback occurs .
protected void Page_Load(object sender, EventArgs e)
{
} It can be achieved by calling CreateTable() in Page_Load. Is there any alternative way to preserve the control
[code]....
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Jan 20, 2011
<asp:GridView ID="GridView1" runat="server" >
<asp:TemplateField HeaderText="Token" SortExpression="Token" HeaderStyle-Width="100px">
<ItemTemplate>
</ItemTemplate>
</asp:TemplateField>
</asp:GridView>
update:
after i view the source code of the page thsi is what i see the id of a textbox that i have created dynamic.
ctl00_ContentPlaceHolder1_tabControl_tabUsers_MyControl1_gv_ctl02__token0_3
OnRowUpdating:
TextBox _token = gvOrg.Rows[e.RowIndex].Cells[7].FindControl("_token " + e.RowIndex + "_" + rowId) as TextBox;
Update end:
i am adding few textbox dynamic in OnRowDataBound and whe i try getting the value then i am getting null
here is my code:
[Code]....
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Jan 15, 2010
I use this method for inserting a textbox in a tablecell
[code]....
But it doesn't work. beacuse it doesn't find the textbox created previously.
I've put also EnableViewState="true" in the file aspx.
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Apr 4, 2011
I'm creating textboxes in the Page_Load event and giving them values, however whenever I load the details I am getting the same output. I always seem to get the first output I got, even on subsequent searches.Here's what my code with the irrelevant information missing:
Textbox txtName = New Textbox();
protected void Page_Load(object sender, EventArgs e)
{
[code]...
If DropDownList has two values (e.g. "Item 1" and "Item 2") and has autopostback enabled, first time it will generate and show "Item 1" in the textbox (the default value for the DropDownList), but if this is changed and the autopostback fires, the textbox does not change.I've tried getting around this by creating a new TextBox, overriding the "LoadPostData" function to prevent this from loading, which got around the issue there, but then I couldn't view the data afterwards.
Any idea how I could get around this? I may be approaching this in the wrong way.Edit: I've added another item to DropDownList that removes TextBox, so that it can be re-created again. It seems to show the correct data when it is re-created after being removed, but if I'm attempting to just edit it, this isn't updating correctly.Edit2: Here's the rest of the code for this page in case this helps at all. The objects which I'm having issues with are SBUName and SBUComments, which are both TextBoxes. The same issue is also happening for SBUClientDropdown but I believe the resolution will be similar:
DBHandler DBHandler = new DBHandler();
List<string> clients = new List<string>();
List<string> clientGroups = new List<string>();
[code]...
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Mar 20, 2011
I'm writing a program that inserts controls onto a webform dynamically. Depending on a variable, I add either a textbox, a set of radio buttons, or a set of checkboxes. Later, after a user clicks a submit button I need to use the controls to determine if the user is submitting the correct answer, but when I try to reference the id of a control, I get "txtAnser is not declared. It may be inaccessible due to it's protections level.
Here is the .aspx page (it's the standard content page of a master page):
[Code].....
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Aug 10, 2010
I am trying to add a unique name to each textbox that I'm adding to a table.
I've tried:
TableRow someRow = new TableRow();
TableCell someCell = new TableCell();
TextBox someTextbox = new TextBox();
someTextbox.Attributes.Remove("name");
someTextbox.Attributes.Add("name",itsId);
someCell.Controls.Add(someTextBox);
someRow.Cells.Add(someCell);
theTable.Rows.Add(someRow);
The html generated includes both my name and the autogenerated name as attributes of the textbox.
Unfortunately, when I run a FindControl, by my name, I get a null reference, even though it still works to find it by the autogenerated name.
What do I need to do to find the control by my name? When / why is it autogenerating names for my controls?
Successful code:
TextBox tb = (TextBox)FindControl(autogeneratedID);
WriteToSomeOtherDiv(tb.Text);
Unsuccessful code:
TextBox tb = (TextBox)FindControl(myId);
WriteToSomeOtherDiv(tb.Text);
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May 24, 2010
I have a web user control with dynamic LinkButton think an event in which you assign events to them (LinkButton.Click + = new EventHandler (Method)).The problem is that these events do not run, I did test creating and if you run statically.Why is it??I need to be created dynamically at runtime.For Examples :
for (int i = 0; i <= 5; i++)
{
Button boton = new Button();
[code]...
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Mar 18, 2010
I have a a gridview with a dynamic number of columns and rows. In each of the gridiview cells, a textbox get's added dynamicaly. I need users to be able to tab through these textboxes, but I can't get it to work.
I set the tabindex of the the textbox when it is created in the code behind, however when I try and tab in the page it doesn't work. If I click inside a textbox in the grdiview then pressing tab does nothing at all, If I click outside the gridview I can tab through the other controls on the page, and it will tab into the first cell of the gridiview, and then stop/
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