Web Forms :: Populating Treeview Control Dynamically?

Oct 21, 2010 09:10 AM

I want to populate my treeview with the values from database. How can i do it.


Web Forms :: Populating A Dynamically Generated Checklist Control In Code-behind Not Working?

Feb 05, 2011 03:24 PM

(The following is a complete re-edit of the original post which was rambling, confusing etc...)

I have a form with a dynamically generated checklist:

<asp:CheckBoxList ID="cblGames" runat="server" DataSourceID="sqlGames" DataTextField="Game" DataValueField="Id" </asp:CheckBoxList>
<asp:SqlDataSource ID="sqlGames" runat="server" ConnectionString="<%$ ConnectionStrings:Games %>"
SelectCommand="SELECT [Id], [Game], [ShowWaitingList] FROM [Aanbod] WHERE ([ShowWaitingList] = @ShowWaitingList)">
<SelectParameters><asp:Parameter DefaultValue="true" Name="ShowWaitingList" Type="Boolean" /></SelectParameters>

The following code-behind is supposed to check those boxes that correspond to values stored in a database. It fails and I don't know why.


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Forms Data Controls :: Populating Dropdownlist Inside Listview Control Dynamically?

Mar 05, 2010 01:24 PM

I have a dropdownlist in EditItemTemplate and InsertItemTemplate which I want it to populate at the runtime while Inserting an item or Editing an item.

I am facing an issue regarding populating a dropdownlist dynamically while in Edit and Insert mode. There are 0 Records in my table and it shows "Empty Data message" in my Listview control. Even the ItemDataBound event does not fire. So I am not able to find the dropdownlist in that listview.

This is my Aspx code which shows only InsertItemTemplate and EditItemTemplate.


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Web Forms :: Masterpage That Is Populating A Treeview From A Sql Db?

May 06, 2010 10:48 AM

am using asp .net 3.5 web forms with VB.I have a masterpage that is populating a treeview from a sql db. When a user clicks on the name in the tree it passes the employee identifier (employee number) to a label on the master page i have hidden. FROM the CONTENT page i am reading the label on the master page and updating the label on the content page to match the label on the master page so i can use the emp number to display info. At least that what i want. However, the content page is not posting back when the label updates of course and its one clikc behind becuase there is no post back. Is there a way to make the page postback when a label changes or a textbox for that matter.Here is how i am updating the label control On the mastepage :

Public Property EmpCode() As [String]
Return Label360.Text


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Web Forms :: Populating Treeview From A Collection Of Classes.

Nov 05, 2009 10:42 AM

I have a class as follows:

public enum
state { FR, STR, SR, IR, PR }
public class
Node {
string NodeName;
string NodeValue;
string NodeTip;
state NodeState;
Node NodeParent;
List<Node> NodeChildren;
public Node(string Name,string
Value,string Tip,state State){
this.NodeName =
this.NodeState =
state.FR;this.NodeParent =
void AddChildren(Node nChildren){
nChildren.NodeParent = this;

Now i want to display this class objects in a Treeview.

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Dynamically Generating The Nodes In Treeview Control And Displaying The Results On Selecting The Node

Mar 29 at 14:26

I am using a treeview control and just want to add nodes dynamically. On selecting a node the results based on that node must be shown below.

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Web Forms :: Populating DDL Dynamically From GetFiles?

Jan 21, 2010 08:14 PM

I am populating a data bound control DropDownList with file names from a local folder that resides within a ListView control.

I am able to populate as expected, in testing list is generated - all good in that regard.

However once I set to databind by adding SelectedValue='<%# Bind("ImageFile") %>'the following error occurs

ERROR:Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

This is the aspx file .. no codebehind:



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Web Forms :: Dynamically Populating A Page?

Feb 27, 2011 06:21 PM

I'm currently building my website and have hit a brick wall. I've not begun coding anything fro this yet as I am unable to get my head around it and not sure where to start.

I've got a database table with a list of town/ county names ( columns are id, town, county).

What I'd like to do is have a template page with set places for town/ county names and then when a particular area is searched for in google/ bing etc my template page with the relevant town/ county name is shown.

I know that's a bit vague so if you have any questions, let me know. One thing I don't want to do is manually create a page for each individual town/ county!

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Web Forms :: Dynamically Populating Radio Buttons?

May 10, 2010 09:36 PM

I have a writing a web page that will use several different types of control. The control types will depend on the data being read from a SQL database. The following is my code that decides what control to add to the page:

Select myReader.GetString(1)
Case "DatePicker"
Dim bdpAnswer As BasicFrame.WebControls.BasicDatePicker = New BasicFrame.WebControls.BasicDatePicker()
bdpAnswer.DateFormat = "dd/MM/yyyy"
Case "DropDownList"
Dim ddlAnswer As DropDownList = New DropDownList()
Case "RadioButton"
Dim rbAnswer As RadioButton = New RadioButton()
Case "TextBox"
Dim tbAnswer As TextBox = New TextBox()
End Select

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Web Forms :: Populating Hidden Fields Dynamically?

Jul 14, 2010 08:54 AM

I have a Grid view which is being populated from a database. Now I want to add a button that has its own html with some Hidden fields. I have introduced an Template Field and put the html in that field which works fine. But now I want to send the values in hidden field dynamically. i.e. the Id and value comming form the database.

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Web Forms :: Dynamically Populating The Database In The DropDownlist Using C#?

Sep 24, 2010 05:38 PM

i have 2 tables Desgn & EmpForm

Desgn table is lik this

CREATE TABLE [dbo].[Desgn](
[DesignationCode] [int] IDENTITY(1,1) NOT NULL,
[DesignationName] [varchar](50) NOT NULL,


and i have called the Populate1() method in the page load event., but i m not getting the dropDown populated why ?

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Forms Data Controls :: Populating Dropdownlist Inside Gridview's TemplateField Dynamically Created

Sep 06, 2010 11:37 PM

I need to create a TemplateField column dynamically , which will contain dropdowlist controls. I've been using this
example to create my first dynamic columns and for the last column, the one that contains dropdowlist controls, I've written this class:


But what I don't know is, where should I populate the dropdownlist control?

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Populating A Table Dynamically?

Jan 08, 2009 06:34 PM

I would like to place data from a sql query in a table row dynamically. I know how to do it using asp but it is not the same in asp.net. I don't know how much data is being return so i want rows to keep adding or being fill with data until 'nil'. Can anyone advise me where to put the sql query and how to dynamically put data in a table

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Populating PostBackUrl Attribute Dynamically?

Mar 17, 2009 01:02 PM

am trying to populate the PostBackUrl attribute from a LinkButton using a function to return the dynamic url. The function is on the code behind page and called from the design page, however it appears that the function is not being executed.

<td><asp:LinkButton ID="pagerPrevious" runat="server" PostBackUrl='<%# getUrl("Previous") %>'>Previous</asp:LinkButton>

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Web Forms :: Add Url's In The Dynamically Created Treeview?

Nov 23, 2010 08:56 AM

i have created the dynamic tree view in ASP.NET using C#, but i have to add url's in the dynamically created treeview. can any one give the basic coding for it with example..

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Web Forms :: Create A New Treeview Dynamically?

Nov 24, 2009 04:16 AM

i need to create a for-loop and create treeview dynamically through coding and i need to display it in well organise manner as in as shown below

treeview1 treeview2 treeview3
treeview4 treeview5

is there any way to do it? on page load?

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Forms Data Controls :: Populating A ListBox In A Repeater Control Residing In A ContentPlaceHolder Control

Oct 02, 2009 09:51 PM

I have a ContentPlaceHolder control that contains a repeater control that contains several databound controls. The repeater control is bound to a DataTable. One of the databound controls on the repeater is a ListBox control. Per the requirements of my customer, the ListBox control will need be populated with numeric values ranging from 0 to 100 in increments of 5. The problem with this ListBox control is that there will be occasions where some data will be non-divisible by 5. On these occasions, the data value is to be inserted into my list of 0 to 100.

For example, most ListBoxes will be populated and bound with a value of 0 to 100 in increments of 5 (0, 5, 10, 15, etc) but SOME will occasionally need to populate and bind with an additional integer of, say, 3. I have tried to populate the ListBox with non-data-bound items and then do the binding later but I am having difficulties with that. To insert the non-divisible by 5 value, I would need to know which repeater item contains the corresponding drop-down list. I can try to query the for for the ContentPlaceHolder AND the Repeater AND the ListBox but they are all dynamically created so locating the control is difficult. This will probably be one of those posts that do not get answered. The .aspx code is:

<asp:ListBox ID="lbCodeWeight" runat="server"
SelectionMode="Single" DataTextField="CodeWeight" DataValueField="PerfGrp" Rows="1"
onchange="javascript:updateTotal()" Font-Overline="False">
Here is some c# code that I have thus far with "appraisal" being the name of the Repeater:
private void PopulateAppraisals()
if (Cache["dt1"] != null && dt1 == null)
dt1 = (DataTable)Cache["dt1"];
appraisal.DataSource = dt1;
foreach (RepeaterItem item in Appraisal.Items)
ListBox lb = (ListBox)item.FindControl("lbCodeWeight");
if (lb != null)
int i = 0;
while (i <= 100)
ListItem li = new ListItem();
li.Text = i.ToString();
i = i + 5;
foreach (DataRow row in dt1.Rows)
int i = Convert.ToInt32(row["CodeWeight"]);
if (i % 5 != 0)
foreach (RepeaterItem item in Appraisal.Items)
ListBox lb = (ListBox)item.FindControl("lbCodeWeight");
if (lb != null)
//find the listbox control that will need this listitem added
//then bind
//then set as selectedvalue

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AJAX :: Dynamically Populating Tabs Using Gridview?

Oct 28, 2009 07:11 PM

I've got a gridview control embedded within a tabpanel and an update panel. I have a few columns from the database showing in the gridview and in order to see all the columns corresponding to that row, I want to open a separate tabpanel upon gridview selected index changed event. At the moment, I'm using the code below to add new tabs:


Problem is that upon clicking on the gridview select button, I manage to add a new tab, but after this, the gridview control gets locked up and stops working (stops from selecting any other rows).

In the code above, I'm rebuilding all the tabs (including the one containing the gridview), after going through forums articles. However, I've also tried doing it the simple way but it didn't work:


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Web Forms :: Setting Root Folder Dynamically In Treeview?

Jun 10, 2010 10:01 PM


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Web Forms :: Treeview Expanding / To Show The DB Values Dynamically?

Feb 15, 2011 07:04 AM

I am using a treeview control to show the DB values dynamically below is my code


My problem is whenever i debug the code im getting treeview in expanded mode,but i want to achieve like whenever i click on the top node it has to show below nodes

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Forms Data Controls :: Building A Treeview Dynamically From SQL?

Jan 25, 2011 08:40 PM

Need to build a treeview dynamically from SQL data. I have 2 tables Project and SubProject.

A project can have many sub projects...

I need a display like this....

Project 1
subproject a
subproject b
Project 2
subproject c
subproject d

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Web Forms :: Dynamically Populate TreeView With Folders List

Sep 03, 2009 02:06 PM

I am having trouble understanding the TreeView Control.

What I want to be able to do is creates a TreeView Control that list folders in one frame and the by selecting a folder from the tree, the second frame displays the contents of the files. The files should then be clickable to launch whatever view, excel, pdf, etc.

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How To Access Treeview Node Of Treeview Control Based On Id

Nov 24, 2009 09:02 AM

i have a function i want to get node from treeview1 control based on id parameter passed. Public Sub CheckIsEnabled(ByVal ID As Integer)

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Web Forms :: Way To Store Object Data To Treeview Node Dynamically

Dec 30, 2010 10:28 PM

I want to store object data to treeview node dynamically(while application running) , In windows form i use node.tag = ? , and it it ok , i try node.DataItem = something , but it is readonly , so how would i store object data in asp.net

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Web Forms :: Generating Textboxes Dynamically On Selection Of Treeview Node?

May 25, 2010 12:37 PM

I am generating Textboxes dynamically on selection of treeview node.

The problem is i have a button and on click of it postback happens and all the date entered in the textboxes and textbox it self is lost ;(

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Forms Data Controls :: Dynamically Populating A DetailsView With OleDb Data Adapter?

Feb 15, 2011 04:43 PM

Just want to know if it is possible to Dynamically Populating a DetailsView with OleDb Data Adapter ? It has to be done on the Page_load because it has to display a users details that i must be able to edit!

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Forms Data Controls :: Dynamically Populating Fields In A Gridview Depending On Data In A Table?

Jul 17, 2010 04:44 PM

I have a gridview that is populating from a SQL DB and working fine. However, based upon certain data I find in fields in the SQL table, I want to place a 'n' or a 'y' in extra columns in the gridview that I am assuming need to be templatefields. My thought was I could maybe add 8 template columns and then I could put a 'y' in the appropriate column based upon the data I find the table. For the life of me, I cannot figure out how to do this. I want to do this at rowdatabound time ( i think) but I just cannot find out how to, in my code, put that 'y' in the columns. Is this the right way to do this or do I need to do it another way? How do I get that 'y' in the proper column?

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Forms Data Controls :: Dynamically Added Treeview - Can't Get Checked Nodes Populated On Demand?

Jul 23, 2010 11:47 AM

the problem is actually in the subject. I have custom control that uses treeview. The control is added dynamically. Nodes for this treeview are populated on demand. Treeview nodes can be checked. I recreate this control on page load event, but still CheckedNodes is empty if checked nodes were added dynamically (added on demand).

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Web Forms :: Error In Populating A Label Control From A Function?

Jan 27, 2011 08:01 AM

I am trying to populate a label with return value from a function, but getting an error when calling the function which says "The name 'CUST_CODE' does not exist in the current context".The code:

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="OrderEntry.aspx.cs" Inherits="WebApplication3.WebForm7" %>


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Web Forms :: Populating A Ordered List In A User Control?

Jul 20, 2010 08:44 PM

I have a upload section on a user control

<div class="AttachQuote"><fieldset>
<asp:Button ID="btnAttachQuote" UseSubmitBehavior="false" Text="Attach Quote" runat="server" />
<ol id="olUploadedFiles" style="list-style-type: decimal; padding-left: 30px;">

the btnAttachQuote is defined as

protected global::System.Web.UI.WebControls.Button btnAttachQuote;

can i do something simular to olUploadedFiles? there are alot of list options in webcontrols and i'm unsure how to use them. I would like to use a for loop to populate olUploadedFiles from a string array in my .cs. something like ...

int i = 0;
while (files[i].Length !=0)
olUploadedFiles.add (files[i]);//i'll substring the file names out

I'm using the same control for both the form submit and the status page(label only mode). I can load the rest of the info i just can't populate the dropdown from the codebehind.

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Forms Data Controls :: Populating List Control Without Database?

Nov 19, 2009 11:27 PM

I have a web form which I plan on using to upload a bunch of files to, one at a time. Once all the files have been uploaded, I plan on adding a routine to add them all the an MSSQL table, but need to know how I can retain them before uploading?

I've considered:

1. Uploading to the server (one at a time), and then adding each to the table from where they are physical stored temporarily on the server - with a single routine.

2. Capturing, the file data as binary, the file name and MIME Type and storing it in a DataTable with other uploaded files before submitting to the database.

I think the first option is probably the most viable of the two?

Either way, I still need someway of retaining information before finally submitting it all the Database.

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Forms Data Controls :: Bulletedlist Control - Populating From Multiple Columns?

Sep 26, 2007 07:27 AM

I understand that the Bulletedlist control populates data from a single column of a database table.
Is it possible to populate the control from multiple columns?

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Forms Data Controls :: Populating Chart Control From DataTable Programmatically?

Jul 15, 2010 01:54 PM

When trying to populate a Chart control in asp.net 4.0, I cannot seem to get it to show the data in the way I want to.

This is the table (DataTable) I want to DataBind to the chart control:


I want to represent this table in a chart control. How can I do this and make my code dynamic?

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Forms Data Controls :: Populating The Menu Control Programmatically Using An XML File?

Aug 10, 2010 12:12 PM

How to Populating the Menu Control programmatically Using an XML File,

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Web Forms :: Showing A Treeview Control In A Modal Window When Click On A Menu Control?

Mar 03, 2011 03:31 PM

I want to make a website having the following UI.

Once I click on 'Engines included' a treeview having all the engine node should show. I am geting the engine collection dynamically from database.

1.What should i use to create enginesIncluded control? 2.How do i show a user control having a treeview on click of 'engine included' control? 3. I also need to show the selected engines on the top row as buttons .

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Web Forms :: Create A Textbox And Button Control In Treeview Control

Dec 13, 2010 10:02 AM

I was working with treeview and bumped into this problem where i need to add child nodes to a treeview control,these child nodes are a combination of textbox and button control so that

i should be able to save the text as new child control,i tried overiding the pre render and post render text but didn't get the solution.

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Way To Dynamically Adjust The Height Of The <div> For The Treeview Menu

Apr 4, 2010, 02:06

the design of my page because of the treeview menu. I am using a treeview for the purpose of issuing accessibility of users regardless of their position. Actually, the treeview menu control overlay the footer whenever I expand on it. How am I be able to dynamically adjust the height of the <div> for the treeview menu.

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Dynamically Add Linkbutton As Tree Node In Treeview

Mar 06, 2009 04:03 AM

i want to add linkbutton as tree node in treeview dynamically

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Web Forms :: To Dynamically Create A Div Containing A Dynamically Created Image Control?

Dec 09, 2009 04:57 PM

I am relatively new to asp and progressing slowly - searching for what I need and generally finding it and then applying it.I am creating an agency web site which shows the photos of its members, these are pulled from a db according to the member ID. I can do all this but getting them to display in a web form is proving impossible.The problem is that there will be a various number of photos per member - minimum 1 but there could be 5 or 6. I want each thumbnail image to be shown in a <div> with a defined style in a stylesheet - basically so they all look the same and will 'float, so as to layout nicely without using tables.

So I need on a page load to count the number of images (I can do that) and then dynamically create the appropriate number of <div> elements AND dynamically create an image control within each of the dynamically created <div>'s

I have found some info on dynamically creating the <div>'s and on dynamically creating the image controls BUT how to bring them together so I get a dynamically created image control within a dynamically created <div> ?

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How To Make A Treeview Dynamically And Allow Dragging And Dropping Of Outlook Emails On It

Oct 27, 2009 08:58 PM

how to make a treeview dynamically and allow dragging and dropping of outlook emails on it ?

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