Asp.net - Select Multiple Items From DropDownList Into TextBox, No Duplicates?
Dec 7, 2010
i used the following technique to Select multiple items from DropDownList into TextBox with No duplicates, however i dont think it is the most proper way,
pressing again with same value selected choose another value from DDL and press button
here is my code Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click If TextBox2.Text.Contains(DropDownList1.SelectedItem.Text) Then
[Code]...
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Jan 20, 2012
I am creating a page in which I need to show a drop down List. From this drop down List a user can select multiple values. I know I could use a check box list like:
<asp:CheckBoxList ID="CheckBoxList1" runat="server" style="margin-right: 158px">
<asp:ListItem>Value 1</asp:ListItem>
<asp:ListItem>Value 2</asp:ListItem>
[code]....
but if there are more than 50 or so values then that will consume a lot of space on the page and will look odd. So kindly tell me how can I select multiple values from drop down list or if there any alternatives so that I can select multiple values and show many records on a minimum space but not a grid?
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Jun 6, 2011
I would like to disable a specific items from DropDownList. I have below code but it does not working. DropDownList have 5 items.And,I'm getting error:Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index
Protected Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
Dim X As Integer = 0 <> 1
DropDownList1.Items(X).Enabled = False
End Sub
But, if I add a different value for X, then it disable 1st and 2nd item.
Protected Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
Dim X As Integer = 0 or 1
DropDownList1.Items(X).Enabled = False
End Sub
My goal is if I would have a 365 items in DropwDownList to disable items for example between 120 and 150.
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Mar 14, 2012
This is my code and i am getting an error ..Cannot have multiple items selected in a DropDownList. when the page loads it select "ALL" in DDLModality but when i change DDLModality.selectedvalue to any "value" then no error but again when i change to "ALL "getting the error.
onchange of DDLMODALITY submit the form
form1.target = "";
form1.action = "";
form1.submit();
[Code]...
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May 15, 2011
I would like to disable a specific items from DropDownList. I have below code but it does not working. So, need someone to told me what I'm doing wrong. DropDownList have 5 items.And, I'm getting error:Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index
Protected Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged Dim X As Integer = 0 <> 1 DropDownList1.Items(X).Enabled = False End Sub
But, if I add a different value for X, then it disable 1st and 2nd item. Protected Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged Dim X As Integer = 0 or 1 DropDownList1.Items(X).Enabled = False End Sub My goal is if I would have a 365 items in DropwDownList to disable items for example between 120 and 150.
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Mar 1, 2012
I have a dropdownlist with some duplicate items on it. I intended to remove them by using LINQ, but do not know how to do it.
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Oct 4, 2011
I have the following problem: I select a customer from a dropdownlist and then the gridview should load all items of all orders of that customer. I have the following query:
Dim allorders = From ord In db.Orders
Where ord.CustomerID = Convert.ToInt32(CustomerDropDownList.SelectedValue)
[CODE]..............
I also tried to modify the query as follows:
Dim orderitems = From oi In db.OrderItems
Where oi.OrderNumber = (From From ord In db.Orders
[CODE]...........
But this does not work. I just started using LINQ.
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Oct 6, 2011
I have a ListView box on my project, which is filled with another function.I need it so that when you press Button1, messageboxes pop up with all of the selected items in it.
So basically, I select multiple items in my ListView, press Button1, and the MsgBox appears showing me what I've selected.[code...]
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Jun 9, 2010
I currently have two list boxes that have the exact same items in each. I don't want the user to be able to select the same item from both list boxes.
My code:
listbox1.Items.Add("SSS")
listbox1.Items.Add("AAA")
listbox2.Items.Add("SSS")
listbox2.Items.Add("AAA")
I'd like the user to not be able to select AAA & AAA from different list boxes, just SSS & AAA. I have way more items just thought I'd shorten it.
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Jun 11, 2009
Is there any way I can select multiple items in a listview programatically in WPF?
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Jun 11, 2009
Is there any way I can select multiple items in a listview programmatically in WPF?
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Apr 28, 2009
Is it possible to select and highlight multiple portions of text within a textbox?
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Jul 29, 2009
I have this code to return a list of fund sources for our organization.
Dim FundSourceList As New List(Of FundSource)
Dim fs As New FundSource
If results.Count > 0 Then[code].....
The problem is that when I loop through the resulting FundSourceList all it shows is the last value. For example, if I have three fund sources (state, federal, athletic), then when I use this code to loop through all I get listed is athletic, athletic, athletic.
For Each FundSource In FundSources
Debug.Print(FundSource.FundDescription)
Next
So I change the code to this. I moved the creation of the fs variable inside the loop.
Dim results = From result In dsResult.Tables(0) Select result
Dim FundSourceList As New List(Of FundSource)
If results.Count > 0 Then[code]....
This works fine but now I'm creating a new class over and over again. It seems a little inefficient to me. Can I not create the class outside the loop and use it over and over again?
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Mar 7, 2011
Trying to select a dropdownlist item based on a value
Dim basedate As Date
basedate = "12/30/1899"
Label26.Text = basedate.AddDays(y)
ddate.SelectedIndex = ddate.Items.IndexOf(ddate.Items.FindByValue(Label26.Text))
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Mar 14, 2010
how to add an item to a dropdownlist.i have tried this
DropDownList1.Items.Insert(0,
"Abu Dhabi")
DropDownList1.Items.Add(
"Dubai")
but nothing is showing in the dropdownlist
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Nov 23, 2009
Using VB.NET I want to add a data's in the Datagridviewcombobox column
Code.
cmd = New SqlCommand("SELECT Sched_Name from tb_Sched_Master", con)
ada = New SqlDataAdapter(cmd)
ada.Fill(ds1)
[code]....
But I cannot get the data's, what wrong in my code.
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May 20, 2012
I want to make my dropdownlist selected first value "--select--" when first load page as i need to force user to choose an event from list. I am blur since I need to perform other function at page_load to check checkbox enable properties, so that I not sure where should I put the coding to Add empty value to dropdownlist.
I did put the following code in page load but nothing happen, the "-select- also no appear in the dropdownlist.
[Code]...
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Jul 20, 2010
Seems most of the examples I find are c#, so in some cases I'm left scratching my head... to make a long story short, I'm simply trying to output the selectList of items to a drop-down within my view:
My ViewModel:
Imports System.Web
Imports Whitebox.UI
Namespace ViewModels
[Code]...
All I'm trying to do now is simply output my "SelectList" within a HTML.DROPDOWNLIST() in my view.When doing a step through, my list items are showing within my "Return view(viewmodel)" watch, but I'm stuck with performing the output.
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Mar 8, 2012
I have a DropDownList control and I want to set the SelectedValue to the lowest value in the dropdownlist greater than 0 for example my control drpExample has the following values:[code]I want to use drpExample.SelectedValue = The lowest value greater than 0..The SelectedValue should then be 0.90..Is there a simple way to do this?
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Apr 14, 2012
I have a combo box with four lines of data:
Reina Beatrix Arpt, Aruba, AW (AUA)
Grantley Adams Intl Arpt, Barbados, BB (BGI)
Owen Roberts Arpt, Grand Cayman Island, KY (GCM)
[code].....
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Jun 18, 2012
I'm working on a webpage automation project. And I am very new in this. I want to use Webbrowser control to select an item in the dropdownlist. Now,how do I programmatically select an item from the HTML snippet below. I would like to select, say for example, "2009" from this
HTML code:
<select name = "yr">
<option value= "">Year</option>
<option>2009</option>
<option>2010</option>
<option>2011</option>
<option>2012</option>
</select>
I am trying the following code :
For Each element As HtmlElement In WebBrowser1.Document.GetElementsByTagName("select")
If element.GetAttribute("name") = "yr" Then
element.SetAttribute("value", "2011")
End If
Next
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Sep 17, 2009
I have an application to display the records of the customers. I am using the wizard to do the edit and delete of the records. In one of my column consists of dropdownlist. When I wanted to edit the changes by selecting the dropdownlist, it didn't display anything after I selected the changes. I have to make changes because my friend did not finish up this part which selecting the selected item to make the editing of the records.
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Jan 5, 2011
I'm designing a web page with two dropdownlists, one for the Make of a car, the other for the Model, both bound to a database with separate SQLDataSources, and using a distinct statement. I add "All" at the top of both by setting appendDataBoundItems = true and adding items named all. Then when I fill the Make with a querystring all the model items get added twice (but only the databound items).
Here's my code:
<asp:DropDownList ID="DropDownMake" runat="server"
DataSourceID="SqlMakes" DataTextField="Make" DataValueField="Make"
AppendDataBoundItems="True" EnableViewState="False" AutoPostBack="True">
[Code].....
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Jun 12, 2009
I am trying to grab all unique items from a DropDownList. Is there a simple way to do this?
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Nov 2, 2011
I have a web project in asp.net in which i have dashboard on which there are dropdownlists with previous seven dates and when i select the date from dropdownlist it opens the file from folder matching with date selected.My dropdownlists are arranged vertically.A strange problem is that when i select the date from ist dropdownlist it opens the file fine and when i select the date date value from any other dropdownlist it opens the same file which opened from the ist dropdownlist all remaining dropdowlists behave same like.And other strange Problem is that when i start opening files from the last dropdownlist to ist.
[Code]...
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Oct 16, 2009
I have an asp drowndownlist and I'd like to change its selection after a button click. I can't seem to find a way to do this, is there a way? (Its a reset button of sorts, and I would like the dropdownlist to return to the "default" value.)
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Oct 8, 2009
I am trying to do is select a value from a dropdownlist (ddlname), hit submit (Where the problem lies) and place the results in the redirected page that carries the value in a querystring. I am under the impression that if you want to pass more then one value you use the concatenation symbol "&", correct? If not what is it? (Using '+' doesn't work neither, just thought I would try it for the same of ruling that issue out
Compiler Error Message:
BC30035: Syntax error.
Source Error:
Line 9: Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.ClickLine 10: Response.Redirect("Results.aspx?Name=?") Line 11: & Me.ddlName.selectedvalue.tostring())Line 12: End SubLine 13: End Class
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Mar 8, 2010
I have an Web application that retrieves some db info and send it out to an html table. All created on the fly in vb code behind. For every post (row) in the db I also fill puts an instance of a Dropdownlist with items read from the db. That means that for every row I read from the database I read the same db info into the Dropdownlist (see the skeleton example below). A lot of overhead I think. It must be possible to create the Dropdownlist once before the loop and copy from that instance in the loop.
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim cboCombo2 As DropDownList
Dim i As Integer
[Code] .....
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Jan 27, 2011
I'm trying to create a "LOTTO" number picker, but I don't want to have more than one TextBox. And I also don't want duplicates in that single textbox. The program randomly picks six numbers from 1 to 30 (Sorry I don't have the code at the moment).
My code runs fine, but I keep getting duplicates in the textbox. (I'll update as soon I have the code.)
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Nov 18, 2010
i have problem for the drop down list in the grid view, it not fire the select index changed. I bind the data for the drop down list when the row databound. But when i select the data, it not fire the select index changed. Another drop down list which hard code the item list fired the select index changed. Below is the code behind and the front end code.
<ItemTemplate>
<asp:DropDownList ID="ddlItem" runat="server" Width="80%" AutoPostBack="true" OnSelectedIndexChanged="ddlPrice_SelectedIndexChanged"></asp:DropDownList>
</ItemTemplate>
[Code]....
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