Two Listboxes And A Master Dataset With Filtering?
Feb 5, 2009
I have two list boxes populated by a master list and an excluded list. the excluded list is pulled first from a csv field in a table, and is inserted in to the excluded listbox. it's workin great.The master list contains all items and is pulled from a dataset, but should filter out those in the excluded list and populate the second list box with only those values that are NOT listed in the excluded box.I'm trying a for/next loop and i think i'm close but this one is becoming a pain. Here's the
' Declare Variables
Dim categorydr As DataRow
Dim categorydt, As DataTable
I have a dataset (WW1Dataset) with one data table(WW1).(database used in an access database) I'm trying to filter the dataset e.g a user wants to filter by a chosen surname (SurnameTextBox.text) so the datset is filtered to display only those records wherethe surname column in the dataset matches SurnameTextBox.text.
I have a database with a Student table and a Class table. There are many students and many classes and each student is a member of a class.I then have a windows form that needs to display a list of student names in a listbox. However, I have a different form for each class. So for example in this form I have coded below, I need to display all students that are members of class51. The code I have so far is reading in all students from tblStudent and this is not what I want. I know that if I was doing SQL or something I'd simply write SELECT * FROM TBLSTUDENT WHERE CLASSID =his?
Private Sub frmAttendace51_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'clear data set of any existing data
I've got a requirement to create report datasets by taking a list of tables, columns from those tables, filters on the tables, and relations between the tables - and build a dataset from them. All this information is contained in an xml file. So I:Read the data from the tables in the list into the dataset. Apply any filter criteria on the tables to the default views. Add any relations between the tables to the dataset relations. So far, so good, but now comes the hard part. One of the requirements is to create a default view (or table) of columns at the dataset level - with the appropriate constraints and filters applied. So there would be this default table or view that would have, for example, columns 1 & 2 from table1, columns 4 & 7 from table2, and column 5 from table3. This is where I'm stuck, because there doesn't seem to be a 'view' property or function at the dataset level.
I'm trying to add a new record in the DataSet in the master table. I'm not including a value in the unique ID field because it is added automatically by the server. At the moment I add second new row it throw me an error �Column 'ContactID' is constrained to be unique. Value '' is already present.� Do I need to set value of id column manually? How?
da.Fill(ds, "tblContactsProfil") daAddress.Fill(ds, "tblContactsProfilAddress") Dim relation As New DataRelation("ContactsDetail", _ ds.Tables("tblContactsProfil").Columns("ContactID"), _
For a WinForms VB.Net application, I use the Bindingsource's filtering capacity to filter data, which is seen in a DataGridview. The BindingSource is from a DataSet, created using the Designer, and the data comes from a Access DB, using JetEngine and .Net 3.5. So basically:
This filtering works fine, however, now I included some extra columns in the DataGridView, which I'd like to filter on, too. Of course, when I feed the manually added columns to the Filter of the BindingSource, this doesn't work out.I've done some research, and was not able to find any way to use the BindingSource's filtering syntax on the DataGridview. I'd like to use this syntax though, as I designed quite a nice UserControl and class around it, to provide smooth, fast and simple filtering capabilities.
I just converted my project from VS 2005 to 2008 and started getting really bad lag only when intellisense iterates my dataset objects. The cpu maxes out one of my cores for about 2-3 seconds each time the intellisense list pops up. Is this a new feature of the 2008 ide?
i created a type dataset. added two table adapters and made relationship on the key. now i want to show the datagridview with master/detail. how i can do it?
Am new to VB, can anyone tell me very simple how to share the MAIN Bindingsource with an detail form where i want to edit 1 record from the main datasource? andreg
I have a large form that is set up from master-detail datasets in Visual Studio 2008.I havene master table with a large amount of detail tables. Several of the detail tables also have detail tables linked.Now I need to add a master table that sits on top of my existing master table making it a detail table.
I am creating a programme in which the user searches a file by typing into a textbox. if the search terms match anything in the file, it will be displayed in the list box. I understand this may be unclear so i will include an example:If the user enters "Oliver" into the textbox, the programme will search the file for any records that include "Oliver".The records are stored in structures:[code]The user will then click the desired record (several may appear)how would i get the integer and perform simple addition and subtractions on it?
i keep getting this very wierd problem were i put in audio into my forms and (Design) but when i put in a 4'th song, it stops working and comes up with a error. I havn't limited my audio to how much songs i can play but for some reason it just stops playing them. This code below is the code i use for this form
First my prog scan a specific path "C:music" which contain Mp3. Then it takes the MD5# of all mp3 and put it in a listbox1. Also on the formload it does open a ".txt" which also contain MD5# that goes into listbox2.Now this is what i am looking to have :When i click my button it compare each line of my listbox1 to listbox2. If , for exemple , the first line of listbox1 is already in the listbox2 then it delete the first line of listbox1 (listbox1.items.removeat(0)). And Do until listbox1.items.count = "0".
I have a program I'm trying to put together to allow my employees to submit shift reports. I'm doing this simply to make my life a little easier as this way, they will all be formatted the same. Instead of spending a large chunk of my afternoon thumbing through a bunch of differently formatted reports.
One feature that I need to figure out requires that one listbox can see what another is doing. Here, let me try to explain..
I have one list box that keeps track of EVERY action the employee does on a customers account. (cancel, upgrade, downgrade) and then a hidden listbox that JUST tracks "cancel" actions..one for "upgrade" actions and one for "downgrade" actions.
The reason behind that is that in the shift report, the all need to be listed separately. This way, I can just add each list to it's own array and list them where I need to.
The problem I've run into... If an employee handles an "upgrade" action at the beginning of the day..and then later on the upgrade is canceled, I can easily remove it from the main listbox that shows everything, however, I can't figure out how to find it in it's own listbox. The "Upgrade" box.
I have a program I'm trying to put together to allow my employees to submit shift reports. I'm doing this simply to make my life a little easier as this way, they will all be formatted the same. Instead of spending a large chunk of my afternoon thumbing through a bunch of differently formatted reports.
One feature that I need to figure out requires that one listbox can see what another is doing. Here, let me try to explain.I have one list box that keeps track of EVERY action the employee does on a customers account. (cancel, upgrade, downgrade) and then a hidden listbox that JUST tracks "cancel" actions..one for "upgrade" actions and one for "downgrade" actions.
The reason behind that is that in the shift report, the all need to be listed separately. This way, I can just add each list to it's own array and list them where I need to.The problem I've run into... If an employee handles an "upgrade" action at the beginning of the day..and then later on the upgrade is canceled, I can easily remove it from the main listbox that shows everything, however, I can't figure out how to find it in it's own listbox. The "Upgrade" box.
So unfortunately, on the shift report, it's still there even though it's gone in the program as far as the employee can see.The item in the main listbox doesn't have the same index as the item in each individual list boxes so I can't just tell it to remove the item at the same index..
So I have a ListBox that animates the images in it. Now I think this is impossible, but I need to let the user choose a custom animation speed. Here's the
vb.net Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles animate.Click Dim cananimate As Boolean = True
I've got my first ever program and it's working. Having tested it a bit it would be helpful for the user to be able to copy the results printed in a listbox into an email or text doc. Just somewhere where they can make a note of it really.Is there something I need to do to enable it? All the google results I found were referring more to doing this in code. I literally want to be able to support Ctrl+A, the Ctrl+C straight out of the program to wherever the user wants.
I am starting to feel completely dumb when it comes to VB.Net coding. I am using Visual Studio 2010 and am trying to compare the numbers in 2 listboxes. If an item from list A matches an item from list B, I want it to add that item to List C. Once it has added the item to List C, remove those searched items from list A & B. Continue until it runs out of numbers to check.
If you are wondering what I am trying to do, I want to make a Common Factor list. I already have the Factoring list done, but got stuck here.
So far, my code looks like
Private Sub CommonFactors(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_Common.Click Dim BoolAdd As Boolean, i As Double, j As Double
I have this exercise which says the following: Create a form with 2 listBoxes. Add a number of items to one listBox. Create a button that when clicked removes the selected item in the first list and adds it to the second list... Also How can i create a Messagebox that will display error when nothing is selected
I have a datagridview (parent) and a (well, several) listboxes that I am trying to create a relation with.Datagrid has master records which contain ID fields to lookup tables. The lookup tables are populated into listboxes.I have 1 dataset which contains tables for my datagridview(s) and my listboxes.I need to create the relations so that when they click on a row in the grid, it shows the corrisponding item in the listboxes as well.Problem is, a lot of the ID's in the parent table are empty... so when I try to create the relation, it blows up.
Code: "This constraint cannot be enabled as not all values have corresponding parent values." I'm doing like like so
Code: lo_relation = New DataRelation("RelationName",DataGridTableIDColumn, ListboxTableIDColumn)
I tried to reverse it, naming the ListboxTableColumn as the parent. That allows the relation to build, but I can't set the Listboxes .ValueMember to that...I'm kind of stumped... as it needs to be a two way relationship.
1) When the parent record (datagridview) changes, it changes the value in the listbox
2) When the Listbox changes, it changes the "value" in the parent datatable so it can be updated.
Would I resolve my issue if I populated the parent with a "default" ID in each field (say 0)... if the database value is null? And furthermore, populate each lookup table with a "blank" default value as well? i.e. First record is ID = 0, Desc = ''?
I've seen the code on this site to setup a drag-and-drop between 2 listboxes (and that works perfectly for me), but I have a need to be able to move items between up to 12 listboxes. For example, I move an item from listbox1 to listbox2; at some point in the future, I need to be able to move that same item from listbox2 to listbox3, then at another point in time from listbox3 back to listbox1, etc. When I make these moves, I need the item to be removed from its previous location. I've attempted to modify the 2-listbox code to include, on my test form, a third listbox, but that code copies to the third listbox, and when I attempt to move the item from the third listbox to the second, it, too, only copies and does not remove the item from listbox3.
I have almost completed coding moving entries between listboxes. My only hangup is: when I trigger the dragdrop event I get the target listbox x,y coordinates. I need a way to convert these coordinates to an entry number so that I can insert the source entry in the proper place. Any one have a solution?
I want to create a program that will let the user input a number and it will go to listbox1. Then listbox2 and 3 will do some algorithms that i made. The only problem that i'm encountering is the average of listbox3.
I have 3 textbox, 1 button, 3 listboxes.the names of the objects is default except to textbox2 and textbox3, I change their name to AveTTTextbox and AveWTTextbox.I use AveTTTextbox to get the output of the average for listbox2 and AveWTTextbox to get the average output of listbox3.[code]....
what I want to do is make it so when i select the first item in Listbox1 it will also select the first item in listbox2 and if i select the second one it selects the second one on listbox2 as well. Is there a way to do this? i honestly have no clue and i know my code is wrong cus i do not know how to select the item # on listboxes but this is what i have:[code]
i am working in vb 2008, and i am having problems switching data between listboxes. I want all the data thats in listbox 2 to appear in listbox 1.here is my code.
While ListBox1.SelectedIndices.Count > 0 ListBox2.Items.Add(ListBox1.Items( _ ListBox1.SelectedIndices(0)))
