Asp.net - Drop Down List Values In Databind
May 15, 2012
My dropdownlist is set to databine like this...
dt = dal.FillDataTable(SqlConnectionString, "SELECT SQL Query Statement")
dropdownlist1.datasource = dt
dropdownlist1.datatextfield = dt.columns.item(0).tostring
dropdownlist1.databind()
This is turn populates my dropdownlist, when a user selects a value, it is then populated to the remaining textboxes on the remaining forms with a session call...
dropdownlist2.add(ctype(session.item("valOne"), String))
Through this session it populates the one value, is it possible to display the selected value but also include all other dropdownlist items in case they want to change thier selection?
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Jul 7, 2011
I have a couple of dropdown lists like this
<asp:DropDownList runat="server" OnSelectedIndexChanged="Update_ddls" AutoPostBack="true" ID="ddl1" />
<asp:DropDownList runat="server" ID="ddl2" />
[Code]...
I also have a function called Update_ddls which runs OnSelectedIndexChanged that looks like this
ddl2.Items.Remove(ddl2.Items.FindByValue(ddl1.SelectedValue.ToString()))
Which removes the selected item in ddl1 from the second dropdown but if I keep changing the ddl1 item then ddl2 won't have any items left in it.
Is there a way to re-add the previously deleted items in the Update_dlls function without re-databinding because if I re-databind I lose the selected item in the ddl?
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Apr 28, 2011
Im doing the same thing as him but in vb express 2008 what i have is a checklist box of 10 toppings, all of which can be selected, (no max or min) to put on a pizza, and i have 3 radio buttons grouped together for pizza size (S, M, L) i cant figure out how to give them vaules in which(for sake of demonstration) s=$5 m=$7 l=$9 and each topping is $0.25 then make them add up to an order total in a msg box or something like that
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Dec 3, 2010
i have the project as below...And i am putting the code over here.Imports System.Data.SqlClient Imports System.Data 'We have to add this line, its mandatory, if u dnt add this line and start declaring the variable "Dim dt As DataTable" Then u will get the error.
[Code]...
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Sep 30, 2010
I'm populating a custom dropdown list control on the fly that's tied to data grid using VB .NET 2008. The form will display all the manufactures when the edit button on the data grid is selected.
The dropdown I created works fine. However, when I try to populate the drop down with the respected manufacture values from the database, I only get a value of "System.Data.DataRowView" that being populated in the dropdown list as opposed to my values from the database.
Here's the basic code I use to first create and populate the drop down control:
<asp:DropDownList ID="Manufacturedd" Runat="server" DataSource='<%# m_ItrackerData.Tables("Misc_Manufacture") %>' SelectedIndex='<%# getSelectedManufacture(DataBinder.Eval(Container, "DataItem.Manufacture"))
%>'></asp:DropDownList>
[Code]....
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Nov 22, 2004
Does anyone know if it is possible to make a drop down list control (when clicked) list its contents above the item, rather than below? Effectively, I need a drop up list rather than a drop down list...
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Apr 5, 2011
Is it possible to reorder the elements of a drop down list (combobox) via drag and drop?For example, when the list is dropped down, I want the user to be able to drag the items up or down to reorder them. I tried this (and some google searching) but I'm wondering if its just not possible:
Private Sub cmbClassLists_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles cmbClassLists.MouseDown
If cmbClassLists.DroppedDown And Not cmbClassLists.SelectedIndex = -1 Then
[code].....
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Jun 18, 2009
i want to stop accepting form drop down listbox if certrain criteria is not met [code]how i can cancel the selection of drop down list?
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Jan 20, 2009
I have a fairly large Drop down menu:
<asp:DropDownList ID="DropDownList8" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList8_SelectedIndexChanged">
<asp:ListItem Value="" Selected="True"></asp:ListItem>
[code]......
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Jun 6, 2011
Protected Sub registerStudButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles registerStudButton.Click
[Code]...
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Jun 5, 2009
I created a vb program so anyone in my company can open it and see who is using what phone number offsite, and since different people go to different places each day, i linked the name and place fields to their respective database.
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Oct 1, 2011
Long time no see. I have been feeling out other languages like perl, python, French, Russian, and c sharp.
Anyway, I have this code.
Code:
Imports System.Windows.Forms.Button
Public Class ProBtn
Inherits Button
[Code].....
I can drag and drop items from my desktop or wherever and apply certain properties and values to my button (ProBtn Class) but I don't know how to drag and drop between control to switch them.
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May 18, 2012
how to change 2nd drop down list value after I selected the 1st drop down list value.
The best example is country and state. After user selected country, the state value should change accordingly.
I am still new in ASP.NET and I know in PHP it can be easily done using javascript.
May I know how to do it in ASP.NET using VB language?
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Nov 4, 2011
I fill a dropdownlist item with the following commands
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Jul 7, 2011
I am a newbie of using a vb.net. And I am eager to know everything around. I have a problem that seems hard to find for. I would like to retrieve data from database using drop down list, and select only the fields that i want to retrieve from it.
DesignationTable From my table i like to display only two in my drop down list
[code].....
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May 31, 2012
I am trying to compare a calculated date with a value in a dropdown list. The value is a date.toString.This is what I have so far:
Dim sched = scheduleDateVal.toString("d"
If Holidays.Items.Contains(New ListItem(sched.ToString("d"))) Then
ScheduleDate.Text = scheduleDateVal.AddDays(1).toString("d")
End If
Holidays is a dropdown list bound to a database so that I can add a day to a scheduledate if it happens to fall on a holiday. This works if I add a string value to sched rather than converting scheduledateval to a string.
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Jan 13, 2010
I'm creating a simulation programe. In one sheet I have a group of cells (AngleConf) that have a drop down list. I would like to make some operations when I change the value of one of these cells. It always works when I insert the new value manually. But it doesn't always works when I change it by selecting the value from the list. I supose that that happens because of some option that I change while I'm working but I can't find out witch one exactly.The code that I think that its implicated:
Sub Worksheet_Change(ByVal Target As Range)
If InRange(Target, Range("AngleConf")) Then
Call resistance 'Actualiser le r�sultat mecanique
[code].....
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May 18, 2011
tbFrom = "one" and tbTo= "two" use drag and drop to swap the values so that tbFrom.text = "two" and tbTo.text = "one" with tbNope.text = "three" but you aren't allowed to drop in tbNope. Show the appropriate symbols for allow drop and don't allow drop. set allowdrop to true for tbFrom and tbTo. So far i have one way working.
Public class Form1
Private sub tbMouseDown(ByVal sender As Object, ByVal e As System.Windows.Form.MouseEventArgs) Handles tbFrom.MouseDown
TbFrom.DoDragDrop(TbFrom.Text, DragDropEffects.move)
[Code]....
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Apr 15, 2009
I've written a program to work out the flight distance between a set of seven cities around the world using a 2D array but was wondering how I would if possible go about having the values for each city selected via two drop down lists (say start city and destination city).
Public Class frmDistance
Private Sub Flightdist_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim rowcolumn(7, 7) As Integer
Dim sr As IO.StreamReader = IO.File.OpenText("Distance1.Txt")
[code]....
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Aug 17, 2009
I'm trying to find a dropdown-style list for images I can use in a program of mine. It's fairly simple, just needs to display a few images in a grid with tooltips for each one, and I need to be able to get whichever one was last picked. For example,[URL] without the tab bar in it. Unfortunately my monetary budget is zero which means I can't purchase any controls?
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Feb 13, 2011
I have a need to click on this drop down list and select a month. Here is the HTML code on the site
[Code]....
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Mar 31, 2011
I cannot get the value from the drop down list and I not sure what's wrong with the declaration and the code.
Dim selectedIntake As String = intakeDropDownList.SelectedItem.Text()
Dim selectedSupervisor As String = supervisorDropDownList.SelectedItem.Text()
.supervisor_ID = selectedSupervisor(0), _
[Code]....
This is the error message I get :
The INSERT statement conflicted with the FOREIGN KEY constraint "FK_student_Details_lecturer_Details". The conflict occurred in database "SKTM-AAS", table "dbo.lecturer_Details", column 'supervisor_ID'. The statement has been terminated.
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Jul 27, 2010
i have four price values in a drop down list and i need to code these values and add them to values from a checklist object i am doing very simple coding ?
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Dec 31, 2009
How to drag and drop tree view nodes to list box contol in VB.net
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Mar 12, 2012
Is using Public Property the best way to achieve the following.From a drop down combobox, a list of options are available. Each option in the combobox has a number of public properties that need to be associated with it.When a option is selected, the user will then have two buttons that each call a different sub, the appropriate options are passed to the sub.Each option will always have the same properties required to be passed.So I'm looking at something like this.
Public Class Parameters
Public Property server As String
Public Property replica As String
Public Propery path As String
End Class
[Code]...
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Mar 6, 2012
i have two pages.1.aspx and 2.aspx i have a drop down list on the first page and a back and sumbit button on the second page..If i make a selection in the drop down list and go the second page and then go the the first page again with the back button. the drop down list doesnt show the selection that i did.i tried the use "sessions" but didnt work, also tried postback but no luck. I read something about "Enableviewstate" also no luck.[code]
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Mar 23, 2010
I have created a drop-down list box that holds 8 numbers representing a month span (3, 6, 9, 12, 15, 18, 21, 25 months). In order to prevent users from typing just anything into the text box above the combo box, I changed it to a drop-down listbox. The other requirement that I was hoping to implement was for the user to be able to type a number, after which the selection would jump to the appropriate item (i.e. the user types in '1', and the selection jumps to 12). This partially works. It will jump to 12, for example, but immediately after the user types the '1', the Selected Index event changes. The user cannot scroll down or up after typing in a number.
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Nov 3, 2009
I have a dataset with a members table that has a first name column and last name column. How do I get the full name to display in the drop down list?
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Feb 9, 2010
the following code allows me to drag and drop the data, so i can reorder the list box. However, is there are way of seeing the line across the list box where it will be moved to?
[Code]...
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Feb 22, 2009
I have multiple drop down lists on a page. They all contain list of countries. So in the background I am getting countries from database and caching them. I would like to populate those drop down lists from another thread. I am also using AJAX controls so I wanted that it all happens at the same time. And also after a user selects a country I want that towns from that country show to the user, and I want that getting towns happens also in another thread so that user can fill other controls while the list is not yet loaded.
I have read somewhere that I should give Page as a parameter to that thread and then find that drop down lists and populate them. But that is not working.
Here is a function that is called when another thread starts:
protected void GetCountries(object o)
{
if (Session["Countries"] == null)
{
[Code]....
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