How To Use IsPostBack When Selecting Value Of A Listbox
Jun 10, 2010
I know that the web's full of Q's and A's about how to use IsPostBack when selecting the value of a listbox.I have a stored procedure that returns a few values, and I want in runtime to have all the values be selected in the listbox.But when I loop through the SqlDataReader and do: listbox. Selected Value = reader(0), the final result on the browser is that only the last value gets selected.The listbox's SelectionMode is "Multiple".
View 3 Replies
ADVERTISEMENT
Nov 5, 2009
i'm working with crystal report and i use (if not ispostback) to set X and in else to retrieve X . the problem is its working properly in some pages and not working in others.this code sample.
If Not Page.IsPostBack Then
Session("VehicleStatusSelectionFormula") = SelectionFormula
Else[code]....
the problem like i said in last note with ("EnableViewStateMac="false") it make ispostback true all the time.
View 1 Replies
Oct 29, 2010
Ok, so I`ve been studying a bit of VB lately.. bought a few books and read lot`s of articles and seen hours of instructional videos, and I slightly start to get the hang of a few things.. :) I`ve recently started a fun little project, but I seem to lack a bit of knowledge to reach my goal. I`ll first try to describe my project:
[Cde]...
View 1 Replies
Jun 27, 2011
I have a simple ASPX page with a listbox and a button. Listbox has about 8-10 items in it. After the user selects an item (listbox is multi-select) and clicks the button, I'm iterating through the items to get the selected one like so:
For Each Item As ListItem In lstLetters.Items
If Item.Selected Then
Dim LetterID As String[code]....
When I step through the code, I select the first item from the listbox. I setup a watch on the 'Item' variable. The code will iterate through each of the items -- but Item.Selected always reads 'False'.I double-check the page, and sure enough my item is selected on the form.What the heck is going on?
View 1 Replies
Jul 22, 2011
I want to have a listbox on the left and on the right a textbox and when i select an item in the listbox i want to read a text file or database and display the value related to it and then have the ability to amend the content.
View 2 Replies
Oct 31, 2009
How do I express, in the code, all the items in the textbox? So far all I could come up with was this:
Dim x
Me.Listbox1.Items.Item(x)
But it isn't working.
View 6 Replies
Aug 15, 2010
Well i this code in a timer: listbox.index += 1 Witch works fine but when it gets to then end of all the number it gives me a error saying no more items to select. So how do i make it so that when it reachs the end of the list it starts over and
back to the top of the list?
View 3 Replies
Oct 19, 2010
Private Sub lvList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lvList.DoubleClick
'Select Customer ID from lvList
frmEdit.txtCustomerId.text = lvList.Select("Customer ID").value
End Sub
my code for selecting the customer id from my listbox doesn't work..
View 4 Replies
Dec 15, 2011
Our project is to make some simplified POS software, in our case, for a restaurant. The form I am currently working on is where you pick food items and add them to a listbox which will essentially be the order form. I made a database in Access that has food-item info and linked it to the VB project.url...My combobox narrows down the food items according to what category is selected, i.e. "Lunch".Now.. is there any way I can select an item from my database records (right box) and add them to an empty listbox that I'll save to a txt file. The database box is called "FoodItemsDataGridView" but maybe I don't even refer to that, I have no idea..
View 1 Replies
Jun 27, 2012
Should: take items and fill checked list box with possible tours that the company can receive (this is done and working) i.e. for 2012, Titleist gets X, Y, and Z; so there are two checked listboxes for 2012: lvl 1 and lvl 2, username specific Both have lists "X, Y, Z" in that order, lvl 1 and 2 is for the permissions level, 1 is lvl 1 and 2 is alex's 0 marking for full details code goes through and checks if lvl 1 is marked, if so it checks the tour in the lvl1 check box if zero is marked, finds the tour in lvl 2 and lvl 1 and checks both items if a tour exists for company but not for the user, the checkbox exists but neither is checked
[Code]...
View 5 Replies
Jan 14, 2010
I have a listbox with all items related to a person written in one line, e.g. Name, Gender, Phone #, Address, Email (all separated by a ControlChars.Tab).. How do I choose each individual item alone, e.g. Name, from a line to put it in a separate line in a file.This isn't working.. Can you tell me what code to use?
Dim outputFile As New System.IO.StreamWriter("Info.txt")For i = 0 To lstAllInfo.Items.Count - 1outputFile. WriteLine(lstAllInfo.Text.Substring(0, lstAllInfo.Text.Substring (" ")))Next outputFile. Close()
View 3 Replies
Dec 3, 2009
I'd like to select a node (item) in the TreeView control to get its path information as a string. I'm finding it's not like selecting an item in a listbox.
View 4 Replies
Oct 15, 2011
I just started learning VB.NET about a moth ago (I have been taking classes, so its been about 5 days worth of classes) and I decided to work on this project idea I had. Essentially, it's a database to keep track of anime and manga that I, or whoever else uses it, have watched/read.[code]...
However, now I want to make it so that when one selects a specific title in the list box, it will show the data in the tags below the <series> tag that matches the item selected in a label. One thing I just thought of is than since the list box gets populated in the order that the series are in, it could be easier to go in order from first item equaling the first <series> and so on.
View 8 Replies
Dec 1, 2010
I have a listbox control that has a selection mode "MultiSimple" (I've also tried MultiExtended). I also have a button that uses this code to select all the items in the list:
Dim i As Integer
For i = 0 To ListBox1.Items.Count - 1
ListBox1.SetSelected(i, True)
Next i
It works ok but the problem is that it's very slow. I have cases where there are 60 000 items in the listbox, and it takes forever to select them all. Is there any function that would select all at once (Just like ListBox1.ClearSelected() unselects all instantly)?
View 3 Replies
Feb 6, 2010
I currently know how to click a button on the application and when I click it, it invokes the OpenFileDialog Event or Object. After It Opens the Open File Dialog, I am able to select only ONE file from a location on my computer. After I click that Single File on my computer, I press the Okay or Open Button on the Open File Dialog, and then it adds that items to my list Box, knows as PlayList_00 and PlayList_01.
Here's what I got so far.
Private Sub addBTN_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addBTN.Click
OFD.InitialDirectory = "C:Movies"
OFD.ShowDialog()
PlayList_00.Items.Add(OFD.FileName)
[code]....
'I have built a Movie Play List, for my Windows Media Player.'But Selecting One item at a time is just fine, but I would really 'enjoy being able to select more than one item at a time, and then 'adding them to my ListBox(s).
View 4 Replies
Mar 24, 2010
I'm selecting a customer from a listbox of surnames...I need to address to display, and the date arrived back...Can't get anything to go into the textboxes, if dr.hasrows is showing up as none I think... not sure how to go about remedey"ing" it though...
Listbox
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
Dim ConnectionString As String
[code]....
View 7 Replies
Feb 7, 2012
The List Box has three candidates and a record Button. Every time the record button is hit I need it to add those button clicks for each candidate that is selected in the List Box. My code keeps counting all the clicks no matter which candidate I am selecting in the List Box. How can I differentiate between each selected item in the List Box.
Private Sub exitButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exitButton.Click
Me.Close()
End Sub
[code]....
View 3 Replies
Jan 27, 2012
I know that I can select an option in a listbox within my HTMLDocument (which refers to a webbrowser control's HTMLDocument) using SetAttribute. For example:
htDoc.GetElementById("lstCountries").SetAttribute("value", "88")
However, I can't figure out how I can select multiple items within the listbox. When I call SetAttribute repeatedly, it always unselects the old one first.
View 1 Replies
Mar 21, 2012
i am trying to make a vb.net project for a travel agency ..... i have make all of the content of it but i got stuck in listbox .... i have added onnfiled of sql table into the listbox and now i want that when i select the list box content then all the other fields of a the row will automatically come in the rest of the textbox so i can add and delete it manually....... here is my code..... of one form(i have made 13 forms like that)
[Code]...
View 1 Replies
May 12, 2009
i'm doing a desktop application using VS2005 with MSSQL 2005. i have a problem with the where clause in the update statement while selecting the listbox item. this is the code for the listbox in load page:
[Code]....
and this is my update query in the delete button event handler: mySQL = "update Appointment set recordStatus = 'deleted'" how do i put in the where clause in when i have 4 columns in the listbox? so can i do this with listbox or have to do with datagridview?
View 1 Replies
May 11, 2011
What is this keyword how can use it?If Page.IsPostBack = False Then
View 3 Replies
Dec 18, 2009
I need to be able to tell from within a VB.NET class (not a user control) whether or not the current request is a PostBack and/or CallBack (AJAX). In the past I've been able to get information about the request, response, session, etc through HttpContext.Current but I haven't been able to find the Page object in HttpContext.Current.
View 2 Replies
Feb 10, 2012
Am using asp.net for above 5 years. But now am facing a weird problem. When i try to send emails from form created by me which contains asp:button, asp:textbox, etc., in code page it always telling IsPostBack false. Even when i click the Send mail button(asp.net button). I cant understand what is problem.
Is it anything needed in web.config file for postback??[URL]... Am sure its not problem in Test page.Because it is very normal page which have only one button & code in vb. Problem somewhere in cache, urlrewrite or web.config. But i cant understand where?
[Code]...
When i exclude that dlls and remove the httpmodule line from web.config file postback working fine. So this is error. They done something wrong in their Dll files or httpmodule.
But still can't understand what is error. Is it have chance to control postback action from dll files?
View 6 Replies
May 2, 2012
I'm having trouble porting some .NET2-era C# to .NET2-era VB.NET. Specifically, I am trying to define an interface that an ASP.NET user control will implement.(For background, I am trying to re-implement Phil Haack's Model-View-Presenter example from several years ago: http://haacked.com/archive/2006/08/09/ASP.NETSupervisingControllerModelViewPresenterFromSchematicToUnitTestsToCode.aspx)
The C# interface I'm working from defines properties and events (IsPostBack, Load) that are already implemented by the base control.However, VB.NET is forcing me to explicitly implement these properties/events in the user control (Public Property IsPostBack() As Boolean Implements IView.IsPostBack...). I'd like to just define these in the interface and not have to do anything special in the code-behind of the implementing user control.I'm assuming that I can do this in VB.NET, I just don't know how. I've spent all sorts of time googling/bing-ing, and haven't come up with the answer.
View 1 Replies
Jul 15, 2011
I have 2 dropdownlists "countries" and "cities", with 2 datasources: If a user chooses the first index in the ddl countries, he can see all the cities in the world in the ddl cities (uses datasource1).If a user chooses a country, he can see the cities correspond to this country chosen (uses datasource2).I put the code for changing datasource in the code behind using vb.net, in Page_Load, but after the user chose a city, and click the submit button, the dropdownlist cities can't keep the status, it goes to the first index of this ddl.
I tried to put this code in the If Not IdPostBack, but like this, it doesn't change datasource while it can keep status of the dropdownlist.I put the code here as reference:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim ddlCities As DropDownList
Dim ddlCountries As DropDownList
[code]....
View 1 Replies
Nov 19, 2009
If I set a ListBox.Height = ListBox.PreferredHeight when the control is hidden and IntegralHeight = True, then set it visible:
a) Actual Height reduces by typically 3-5 pixels after redraw (but not 1 pixel per item).
b) PreferredHeight does not not appear to give the correct integral of item heights.
Is there a way to make ListBox calculate the correct integral Height before the ListBox is made visible, so it can be correctly pre-positioned from bottom edge?
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ListBox1.Visible = False
ListBox1.IntegralHeight = True
[CODE]...
View 4 Replies
Feb 17, 2011
This code bellow to compile a single listBox on form1 to listBox on form2 then listBox on form3.
I want to modified this code to compile 169 of ListBoxs on form1 to 169 listboxs on form2
and 169 listBoxs on form3.Try this code,not need the new coding.
Original code from JoOl and modified by John Anthony oliver
[Code]...
View 1 Replies
Feb 13, 2010
1 when my listbox returns resaults it only brings back 10 how do I set it to return lets say 500
and question 2 is when I click on my links in listbox it's not opening webpage as I would expect it...
This is my code
[Code]...
View 8 Replies
Apr 28, 2009
I am using VB.NET (version 2008). I have two types of items populating in a listbox (checked listbox). For example: lets say one is type "A" and other is "Type B". Their names maybe same so if the user sees those items in listbox then he won;t be able to determine their type until he click on them and checks out its properties. I wanted that I add each item to listbox and colour them so that blue for example means type "A" is there and red means the other. So this way I will be able to know at a glance that how many item of what type is present. I guess it may not be possible to do that in a standard checkedlistbox. I am also using component factory's krypton controls which enhance the gui of an application. But I dunno if I can progress using that.
View 5 Replies
Oct 24, 2011
I am trying to get back a single from from a EF database model using the below line of code..
Dim _classRoom As classrm = db.classrms.Select(Function(b) b.Course_ID = _CurrCourse.course_ref)
Where classrm is the name of the entity and db is declared as a new entity. What I am trying to do is select a row from the entity based on matching Course_ID which in this model is a string. So that I can later use the variable _classRoom to get other items out of the same row.. However I am getting the following error:
Unable to cast object of type 'System.Data.Objects.ObjectQuery`1[System.Boolean]' to type 'Trial_Online.classrm'.
I have to preform similar tasks with several different Entities but if I get pointed in the right direction I can manage from there...
View 2 Replies
