Web Forms :: Drop Down List, User Control, Getting Value Of DDL?
Nov 17, 2010
As the tree said to the lumberjack, "I'm stumped". I've been doing .net for years, and my brain is in vapor lock...Very simple here.. I have a user control which has a dropdown list, and a button on it. The DDL is databound. When the button is clicked, I want to retrieve the value of the dropdownlist. I check to see if the page is a postback and if not, I bind the DDL.I put my user control on my master page.When the button is clicked, the value of the dropdown is not obtainable. The selectedvalue is empty. I figure this has something to do with the order of the page being regenerated.
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Jun 22, 2010
I've got a drop down list that I want to populate with items from a SQL Server database, which I did successfully, but I can't figure out how to write an if statement that will clear the drop down list based on a selected index and repopulate it with data from another table. The drop down list is inside an update panel that auto posts back.
Basically I want to allow the user to choose an item, but rather than populate another drop down list control, i just want to repopulate the current one with new data.I'm guessing that if I want to get data from more than one table the code below isn't going to work for me. Could I get the data from all the tables at once and store each table data in its own variable until I need to use it? (Each table will have under 10 items, in 5 tables.)
Here is the code to get the data from the database:[Code]....
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Mar 17, 2011
I built a user control that displays a drop down list of states. I'm using it, but if I try to put it in a listview control, all I get is the frop down with nothing in it.
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Jan 14, 2011
I have the following scenario. I have a page that hosts several user controls. The user controls are all surrounded by a single update panel. All user controls have a save button on them. When the save buttons are clicked the page updates the update panel as expected. Some of the user controls contain editable list views. Whenever an action is taken on these list views, the Update Panel is NOT refreshed, but the whole page posts back. How can I get these ListViews to also refresh the Update Panel? I cannot post the code because of NDA. There are no javascript errors on the page reported by either IE8 or Chrome.
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Mar 23, 2010
I have a user control in a master page with two drop down lists. When the user selects an item out of either ddl, I want to load a specific user control inside an update panel on the content page. I can't figure out how to get the user control to trigger the update panel.
Master
<%@ Register src="toolbar.ascx" tagname="toolbar" tagprefix="uc1" %>
<head id="Head1" runat="server">
</head>
<body>
[Code]....
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Feb 6, 2010
I have the following Students class:
[Code]....
I need the 1 since it's a foreign key in another table. For the life of me, I can't get this to work like this.
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May 26, 2010
I have a drop down list bound to a column in a database. If a user logs into the website using the standard login controls, I want the drop down list to automatically select there name from the list. here is the code that doesn't work
[Code]....
The error orrcurs here:
[Code]....
Which intellisense says "Property Access must Assign to it's property or use it's values". Do I have the code all wrong? Also, as a side question, I don't understand why I have to use the TryCast find control option to find every control to use them. Even in the Page_Load if I type in DropDownList1 it says it's not declared.
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Mar 30, 2010
I have a drop down list that has the initials of about 12 of our sales guys.How can I make it so that when they select their initials from the list, the next drop down list only shows their customers.In my database there is a column for customer name and salesman.
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Jul 29, 2010
How find out time duration in asp.net using drop down list Control? Result will display in textbox.
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Apr 19, 2010
I have a drop down list that I'm suppose to get results according to user selected value ,
I can't figure out how to get the data in the target page how to manipulate it on the view. This is what I have tried
In the controller
[Code]....
this is my index file
[Code]....
this is my target page
[Code]....
as you can see i have tryed a few things but ...
One more question , am I taking the correct approach or is there another way to do it(passing data according to user selected item )
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Jan 18, 2010
Once again something for a new bee... I have 3 questions -
1. I wanted to add a drop down list instead of a text box to my grid control (which should come up on clicking editing)
2. Similar control for form view
3. On click "select" in a grid view, I want to open a new web page which will show a form view attached with the same "select" index.
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Mar 12, 2010
How can I have 2 Cascading Drop Down Lists for the same Drop Down List?here is my problemi have 3 drop down lists read from database1- Schools List 2- Classes List3- Teachers ListEvery School will have more than 1 Class and more than 1 TeacherWhat I want is when user select a School from Schools Drop Down List then BOTH (Classes and Teachers) should be refreshed based on the School Drop Down List
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Mar 8, 2010
is it possible for reorder list to to allow user to drag n drop via column cell.
For example,
Column1 | Column2
------------------------------
Value1 |Value5
Value2 |Value6
Value3 |Value7
Value4 |Value8
Value 1 was drag n drop to the position of Value5. And Value5 ,Value6,Value7,Value8 position are reorder like Reorderlist in row.
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Feb 10, 2010
I have a list with 2 sorts of items. Items that have actual values (1,2,3,4 etc) and items that are like group headings so all their values are set to 0. If someone decides to select a group heading - which has a value of 0, is it possible to redirect them to my 'Select an item' item which has a value of ""?
If worse comes to worse, I can just reconstruct the entire list, although if possible I'd like to avoid it.
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Jan 28, 2010
I have one Drop down list box like following :
[code]....
when drop downlist has item string too large then i want to give it horizontal Scrollbar ..
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Feb 18, 2011
I'm attempting to create a simple menu user control just as outlined here.
The attached code results in an "Object reference not set to an instance of an object" error, but I can't figure out why.
<%@ Master Language="VB" CodeFile="MySite.master.vb" Inherits="MySite" %>
<%@ Register src="Controls/Menu.ascx" tagname="Menu" tagprefix="my" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">......
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Jun 24, 2010
I have drop down list box that I would like to show two columns, is this possible? Or can it be done with a list box?The query correctly retrieves all of the table data to be displayed, one colum is an abbreviation, the other a bit longer description.
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Mar 4, 2011
I am having an application which should contains a datepicker with drop down list for year and month. So how can I insert Drop down list into an ajax calendar extender control. I can't use 3rd party .dll like Calendar extender plus or 3rd party tools like jquery.
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Jan 12, 2011
For my website I would like to create some functionality, that will give me possibility to Drag and drop Web User Controls on my site. I have many Web User Controls.. Like Calendar, News, Videos, Gallery. Those part of codes are inWeb User Controls.. I would like to move(with Drag and Drop) those web user controls around site. Example of what I mean is here: http://www.rtvslo.si/ To move boxes around, but in my case Web User Controls.
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Oct 18, 2010
i have two user control page how to retrive text box and drop down value in both page in our aspx page
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Jan 27, 2010
The dropdown list control which comes with vs2008 can only select a value from it.
Does anyone can tell me where can get a dropdown list control into which user can select or input value?
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Jul 20, 2010
I have a upload section on a user control
<div class="AttachQuote"><fieldset>
<legend>Quote(s)</legend>
<asp:Button ID="btnAttachQuote" UseSubmitBehavior="false" Text="Attach Quote" runat="server" />
<ol id="olUploadedFiles" style="list-style-type: decimal; padding-left: 30px;">
</ol></fieldset></div>
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++;
}
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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Sep 15, 2010
With following code, I can fetch all properties of user control. I need to get only those properties which were separately defined excluding the default ones.
[Code]....
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Nov 10, 2010
I have a requirement in my application that, while saving the application, need to get all the value from drop down list and pass it to the view model. But application should not allow the user to select more than one item from drop down list manually, ie, only one value at a time. My view model is like ...
public class ListManagement
{
public IEnumerable<selectListItem> InactiveProduct { get; set; }
public string[] InactiveProductSelected { get; set; }
public IEnumerable<selectListItem> ActiveProduct { get; set; }
}
[code]...
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Mar 25, 2011
I am getting this error yet I know it to be untrue.This is the code:
ddlPartnerOrganisation.DataSource = agency.AgencyGetListOfEYDN();
string temp = ddlPartnerOrganisation.SelectedValue.ToString();
ddlPartnerOrganisation.DataValueField = "AgencyID"
;
ddlPartnerOrganisation.DataTextField = "AgencyName"
;
ddlPartnerOrganisation.DataBind();
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