VS 2010 Selecting Item From Drop Down List
Dec 7, 2010
I am trying to set the item that is selected from a drop down list based on what it in the database for that particular record. I am filling the dropdown list with a SQL DataSource I have tried a couple of example that I have found for selecting the item in the list but I am always getting the first item in the list as the selected item. This is what I am currently working with:
Code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If IsPostBack Then
Else
Dim ID = New Guid(Request.QueryString("ID"))
[code].....
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Mar 5, 2010
I have a drop down box with values that shows on loadUnited States Canada Now I have a function that is checking the users value from the database which is fired on a button click. What I plan on doing is comparing the string like if United States(db value) == United States (dropdown value) then go ahead and select United States in the drop down. When I do this I am getting the right value selected but it is making all the values the same for all records.
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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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Jul 4, 2010
In my controller I generated a SelectList that I pass to the dropdown helper:<%= Html.DropDownList("abc123", Model.SomeList) %>I look at the querystring for a value, which is a ID.I then loop through all the items in the SelectList and if it is equal to the ID, I do:The controller action then passes this SelectList to the view and then to the Html helper.In debug mode I can see the value does get set to true, but the html renders without selecting the item.
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Apr 28, 2010
Suppose I have a list of a couple of thousand organizations and a user needs to be able to select one of them. The list is too large to populate in a dropdown at page load, and the user often knows what they want but it's not the first part of the organization name. That is, they know "Collections" but not that the precise name of the organization is "Department of Collections". So the user will need/want to type in some information.
It's easy enough to use an autocompleting textbox of some kind, but I don't want to allow the user to type in random text - they have to choose one of the organizations explicitly.
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Dec 30, 2010
i want to update data in my table..for which i want to select drop down list value automatically when i click on Select button in my griedview.my drop down list contains City names and that data is shown in griedview, so when i am clicking on select button on particular row in griedview i want to make that city selected in drop down list..my Dropdown list id is "drpCity" and griedview ID is "GrdCity"
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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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Oct 18, 2010
i have used one drop down list box...in that ....whn i m running web applicaiton i need to stick the value which i m selected for the movement upto i select the next choice. it is always going to the first value always. i have 40 items in my drop down. whn i select the 5TH item after selecting 5th item it going to first item.
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Dec 2, 2010
I have written the piece of code below to get a productID from a gridView when the user clicks on the select link.
Convert.ToInt32(GridView1.SelectedDataKey.Values["productID"])))
However, if a user clicks on this more than one click the newer value replaces the previous. Is there a way to keep adding to the cart list when the user clicks on a new item?
Edit:
Here's my code for the Shopping Page:
[Code]....
I dont know if the location of creating the list is important? Wasn't sure if it was placed in the click event if it would keep creating a new instance?
Then for the Basket Page I have:
[Code]....
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Jan 2, 2011
In my project requirement user wants to enter a manual entry if they can not find an item in the drop down list.
Right now what I am doing is:
I set the dropdown list autopost back true and on selectedchanged event I am hiding the drop down list and showing a text box to enter a manual entry...
This is working perfect and no problems..
but the drop down list needs to change to a text box on only selecting a "unknown" option in the list...all other list items are doing unnecessary post back to the server with no use...
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Aug 31, 2010
I have two drop down list on a page. The first one list projects and the second list users. The userlist is populated with an object datasourse that pulls a list of users for the selected Project.Whenever the Project list selection changes the second ddl Userlist always reverts to the first person in the list instead the person that was selected before a new Project was chosen.
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May 5, 2010
How can I make the first item in a drop down list non selectable. I want this first list-item to show up when the page is opened and want to populate the rest of the DDL from a backend DB. I don't want this default first item in the list to be selected (just want to show it as a default value)
I want it to look something like this.
Choose a State: (Appearing on the top of DDL, but cant be selected)
TX
IL
NY
FL
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Feb 9, 2011
I fill a the drop down list with a SQL select query, but i want to add a first default item, something like "- Select an option -" or "All"
What im trying to do is make a dynamic SQL query, something like this:
SELECT * FROM table1 WHERE (value1 = ? AND value2 = ? AND value3 = ? )........ (or "like" instead of "=")
You are gonna have to select those arguments from 3 drop down lists, but i wanna have a default value on the top of the drop down list options and send a "*" as value if this option its selected, so the filter doesn't consider that value
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Feb 23, 2010
I have a drop down list with the fist item as the word "select". I want to have this in the list but make it so it cannot be selected.
I have tried changing enabled=false, but that just removes it completley from the list.
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Jan 29, 2010
how do i get the selected item in the drop down list and insert it into database (togethi populated the drop down with the values from the tables in database. It is dynamic, not static.i have a button in the gridview called 'add'. so when user clicks on it the row (whatever columns in the row) would be inserted into database. i am doing insertion/create for this.
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Mar 26, 2010
Alright heres my scenario. I click on an event and a new aspx page opens. I have two drop down lists and three text boxes. All populated with the data from the database. But when the page opens the drop down lists always show the item that is at the top of the list. Not the actual item that is in the database.
So say the name John should be there in one and a car names honda. But instead it shows alex and acura. These are just examples. But it alwasy starts with the item at the top
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Aug 12, 2010
I am working with a model which has the following, basically a Project can have a score between -5 and 5 and I'd like to show a dropdownlist of the available options, i.e 5,4,3,2,1,0,-1,-2,-3,-4,-5.
[Required(ErrorMessage = "Score is required")]
[Range(-5, 5, ErrorMessage = "Score must be between -5 and 5")]
[DisplayName("Score")]
public double Value
{
get { return value; }
set { this.value = value; }
}
What would be the best way to accomplish this using a dropdown list and how can I make the score of 0 the
default selection?
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Jul 14, 2010
In my application i used drop down list dynamically so that if i enter the the value in the text box that many drop down list genrated with data from database. if i select the different iteam in the drop down list it will not changed it remains the first iteam of the dropdown list. if i use post back event is true in code part that drop down list is not visible.
nt i = 0; i < rows; i++)
{
TableRow row = new TableRow();
for (int j = 0; j < column; j++)
{
TableCell cell = new TableCell();
[code]...
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Jul 23, 2010
I'm using Model-View-Presenter framework. When Loading a page, I'm having trouble setting the selected item that came from the Database.
In view, I know I need:
protected void ddlStatus_SelectedIndexChanged(object sender, EventArgs e)
{
presenter.DdlStatusSelectedIndexChanged();
// what should this pass?
}
Then in Presenter:
public void DdlStatusSelectedIndexChanged()
{
view.DdlStatus = ???
// Should I pass the SelectedIndex?
}
I also think that part of my problem is that DdlStatus I have as a List.
Interface:
List<StatusDTO> DdlStatus { set; get; }
The best I found is here (but needs formatted!) ---> [URL]
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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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Jul 7, 2011
Is there a way to drag and drop the item in a listbox to reorder the sequence?
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Apr 19, 2014
Basically, I have a gridview table with a dropdownlist column and I need a way to retrieve the selected item from it. Now I'm using an imagebutton in order to get the selected item from the dropdownlist to pop-up as a message box (as a string). I already know how to get text from a boundfield. However, using the same code to get the dropdown list item won't work. This is a snippet from my code:
ASP code:
Select...
8:00
9:00
10:00
11:00
12:00
1:00
2:00
3:00
4:00
Visual Basic code:
<asp:BoundField DataField="Case#" HeaderText="Case#" ReadOnly="True" />
<asp:TemplateField HeaderText="Surgery Time">
<ItemTemplate>
<asp:DropDownList ID="Time_Slot" runat ="server">
<asp:ListItem Selected="True" Value="0">Select...</asp:ListItem>
<asp:ListItem Value="1">8:00</asp:ListItem>
[CODE]....
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Sep 8, 2010
Does anyone know how to do this so when I select something the 1st dropdown and the 2nd one becomes visible and populates list from a Select statement. I really need help on how to do in an aspx and not on the code behind page.
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Nov 25, 2010
when i am selecting an item in dropdown list datasource is bind and after another selection it is bind again .but i want it bind only once.
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Jun 15, 2010
n a form I have multiple group of controls which are grouped using validation group property. I want to assign validation group to asp.Button dynamically on client side using javascript on the base of item selected in drop down list.
Here is JavaScript which I am using, but it is not working. It shows validation group undefined but actually a default group is defined.
<script type="text/JavaScript">
function NextClicked() {
var _ddlStatus = document.getElementById("<%=ddl.ClientID%>");
var _selectedIndex = _ddlStatus.selectedIndex;
var _btn = document.getElementById("<%=btnNext.ClientID%>");
alert(_btn.ValidationGroup); // here in messge it shows undefiend, yet I have defiend a group in button as default.
if (_selectedIndex == 1) {
_btn.ValidationGroup = "G1";
}
if (_selectedIndex == 2) {
_btn.ValidationGroup = "G2";
}
}
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