Asp.net : Add Dynamically "X" Dropdown-lists (or Other Elements)?
Sep 19, 2011
I want to create a website where it is possible to add dynamically "X" dropdown-lists (or other elements)These dropdown-lists should be shown on the website and furthermore there should be an other element be shown, that depends on the dropdown-list (for example: if the user chooses option "A" there is a checkbox, if the user chooses "B" there is a input field)
I created a method and pass the element type, id, and any inner text that instantiates a new html element. The last statement: Me.Controls.Add(element) adds it to the end of the page, but I would like it to be inserted in a specific position (between 2 divs within a form). What I am describing is very similar to this post on SO here, although it was for javascript.
For my first post I've got a tricky question. I'm past walking through tutorials but not far enough to join the Open Source Community.this Question I'm trying to create a program that tracks combinations used in Alchemy Games (Generally on a mobile phone etc)I've got the following classes
Class Game contains properties for Elements and Combinations Class Elements Inherits List(Of Element) Class Combinations Inherits List(Of Combination) Class Element Class Combination
Combination contains Element 1 and Element 2 and List(Of Element) for the results My Question: Using Game.Elements how can I add a readonly property for combinations of that element.
One of my clients wants a set up multiple dropdown lists as a set of outbound links (yes, I cringed too, but he does have his reasons. there are 3 dropdowns, each one pertaining to its own group of links. When each dropdown has its SelectedIndexChanged, it then redirects based on the choice made. However, lets say I make a choice in the second dropdown. It goes to the proper link. If I then choose a link in the first dropdown, it goes to the proper link. Then if I select a link in the third dropdown, it will go to the link specified in the choice I made in the FIRST dropdown.
How can I code it so that it will always select the most recent selection?
I have a label with a tooltip attribute for rollover effect. This works all great. However, it seems to get hidden behind any dropdown lists that are nearby. I have tried adjusting the z-index, without any luck. This issue does not appear in firefox, and I have not tested it in later versions of IE.
I realize this is probably due to IE6s poor css standards-compatibility, but how can I get around this?
I have two lists of strings. One is a list of all students in a class and the other is a list of students in the class that completed an assignment. The two lists are part:whole. So we have two loops for copying elements and displaying them in a list box for only the students who did submit.
Dim f As Integer f = 0 Dim h As Integer h = 0 While (usersinclass.Count > f) h = 0 While (usersidthatsubmittedassingments.Count > h) [Code] .....
What I need is the remaining portion of the "usersinclass" list. (i.e. The students who did not submit). I tried an Else statement BUT with nested loops, every element is guaranteed not to match at least once, so I was getting elements that shouldn't be there. So, is there anyway to run the given lists against each other again to pull out the remaining students? (preferably with no repeats).
I have multiple combox boxes, A B C Combobox B has items Fruit, Veg, Dairy Combobox C needs to contain 3 list and depending on what value is selected in Combo Box B.
For example, If I select Veg in Combo Box B, I would like to have a drop down list containing "tomatoes, lettuce, onion,..........." If I select Dairy in Combo Box B, I would like to have a drop down list containing "Milk, Cheese...................."
what is the best way to load dropdown lists from reference/lookup tables for a desktop application? the application is layed out into 3 tiers. I've built up my entities.the front end has a form with 6 tabs. and one big save (another discussion :)Should I load them all when the form is initially loaded? Are there any caching mechanisms I could use?
it is vb.net app on a network drive that is accessed by several users.it's also worth noting that some reference tables may be updated. Via another form.
I wish to read a web page that had various frames and div elements.To start with I would like to create a routine that justs lists all of those elements values and then display each element name and its value so I know what I have and how to reference it later on.I have been using the WebBrowser control and have managed to do a few basic things so far like go to a website and auto login.
I have to retrieve same amount of datas from a variable number of clients in an arraylist. I know I can put arraylists in arraylists but would be easier to get one arraylist for each client dynamically declared.
Ex: alClients (XXX, YYY, ZZZ) for i as integer = 0 to clientsNumber -1 Dim nameVariable = "al"+ alClients(i) ' = alXXX Dim nameVariable as New arraylist() ... Next
But it seems not to be possible to do that so is there a way to do it? By surcharging constructor of the Class New ArrayList(), ok but how??
I need to show a drop down list when the page loads, the default selected value is nothing, or an empty element (such as "-"). When the user selects one value from the list, another drop down list is added below the first one, and so on.My problem with this is how you make the page to remember the drop down lists created through postbacks and the values they have selected?
EDIT: I did this example for dynamically add drop down lists and suscribe them to an event handler but the event won't fire.
EDIT 2: Changed the code because I labelled for VB.Net and posted something in C#. I update the code with some trivial improvements, but still won't fire the event :(
Private myDdlArray As New List(Of DropDownList) Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If (Session("ddl") Is Nothing) Then
I have an asp.net web app that allows users to customize some GUI aspects (such as font color, add a custom logo etc). This information is stored in the user profile database. I have a css file that populates font colors etc. The main page, loads the users profile from the database, and customizes the page accordingly.Aside from having each label with its own "font-color=", how can I display the CSS elements, based on the user profile information returned from the database?
I have a pair of dropdown lists, they are linked in the sense that in it is basically a 2-d array. I have a list of accounts, and a list of domains for each account. So based on which account the user selects from the dropdown, I need to populate the domain list with the appropriate selections. Is there a way I can do this without [code]...
I have a GRIDVIEW with columns, one of which contains a CSV of possible values for the dropdown that must appear on each row.
Private Sub GridViewParameters_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridViewParameters.RowDataBound If e.Row.RowType = DataControlRowType.DataRow Then[code].....
Depending on whether the type of control is a dropdown, textbox, or check box (feined in the table) it hides or shows the relevant control type. If it is a dropdown it needs to get its values from a CSV in a corresponding column. I have a SP that returns a these in table form if passed the id of the relevant row.How do I get that is from the gridview to pass to the drop down and load it correctly?
I have three dropdowns, which are all loaded in the same function. How do I grey out dropdown 2 & 3? I want them to activate if a certain choice is made on dropdown 1.
I need to create a sample question types web form in VB.NET which allow user to the following:he user selects the control type from dropdown (TextBox, RadioButton, ListBox etc). Generate controls dynamically based on the control type on the webform.It will always show the TextBox (where user writes the question) and (generated control - TextBox, RadioButton, ListBox etc) and save those values to the database.
How to set up a Chart using the new MS Chart control. I want to be able to populate the data via SQL because the user will be able to dynamically change the values via drop downs. The format of the data will be the same (Qty, Time Period) but the Focus of that data will change. I'm honestly not sure where to start, I can draw the chart but I have no idea how to populate it with data via code so it can be changed dynamically. VBE 2010, and I'm hitting an AccessDB
Is it possible to select a value of a drop down by its dynamic index that is returning from another function whereas selectindex = 2 (generated dynamically)
how I can get this to work. I want to distinguish dropdown controls inside a repeater control. I understand now about the lifecyle and how the buffer is already writen, but what are my alternatives? Here is what happens
Code File
Dim repeatTimes((TotalAdInsured - 1)) As Integer myRepeater.DataSource = repeatTimes myRepeater.DataBind()
I want to Update Column of a Table where ColumnName will be DropDown.SelectedValue.Example: A set of RECORDS will be displayed from a Customer Table where CUstNo ='1234' and City= 'Chicago' and Grade ='B' Once displayed I want to Update the grade to 'A' of all those customers from the above criteria. In My case I have like 100 Columns, so in where Clause Column Names will be selected from a DaropDown.In My Query, Update Customer SET ColumnName= 'some value' where ColumnName ='ActualValue'So how can I pass the ColumnName which is Dropdown Selected Value. I believe I can't give as Update Customer SET DropDown.SelectedValue = 'some value' where DropDown.SelectedValue ='ActualValue'
I am dynamically creating and adding dropdown controls to DevExpress XtraGrid.That works fine and I can add a dropdown control to any column I wish.My main problem is that I need to have the first element in the dropdown control displayed. But after I dynamically add 3 dropdown controls to the grid, only the last one has the element displayed. The previous two do not.Although, I add the elements
this is what the code looks like:
vb.net Dim column as DevExpress.XtraGrid.RepositoryItem.GridLookupEdit For i as Integer = 0 to dsSometing.Tables(0).Rows.Count - 1 column = New DevExpress.XtraGrid.RepositoryItem.GridLookUp
[code]....
The code will go tru and add lets say 3 dropdown controls, set their .DataSource to datasets I need, but it will only show .NullText of the last added control.
I have two lists. One list is a list of names, the other list is a list of how many times each name is found in the first list noted in the database
so... Nick John Jim Jack
is the firs tlist
10 13 13 2
is the second list. Nick had 10, john 13 and so on.I want to sort the second list from large to small, but have the index for the first list still linked to the correct amount of calls.i do it this way so I can
for x = 0 to num_of_names string = lst_name(x) & "-" & lst_count(x) next x
I have a list of servers in the first dropdown. I want to get list of all databases in the second dropdown depending on the server selected in the first dropdown.
For this I need to query each server while selecting the server.
I know how to check whether an item exists in a list using (MyList.Contains), But I do not know how to check the whole list. For example (use one button and one richtextbox):
Code: Public Class Form1 Dim NPB As Button Dim x As Integer
[code]....
As you can see, when I open a program from my menu, a new button will be created with text similar to this, "C:Program ". The button it self will not do anything. How can I create the method at the same time the button it is for is created? Also how can I change the text do that it gives me, for example, CCleaner.exe instead of the whole target path?
I would like to loop through two lists using a For each loop. dim data as list(of pointpairlist) For each recLine in records For Each chan In recLine.channels and d in data d.add( func(chan) ) Next next
Note: each record line has one sample from each channel recorded. i.e. each record line is a slice of a 32 sensor recordings. I want to build up a x,y list of data points for each channel (the x axis is common to all channels). Is there some way to do it similar to what I have above (avoiding indexing variables).