i recently add two combo boxes in my form. the first combo box contains the categories of movies. and the other one is the list of movies sorted according to the category of movie. i just wondering how i could i add and view movies for the second combo box, when i click one of the category of movie.
View 2 RepliesHi, I am inheriting the telerik radcombo control however I am unable to view any items that i add to the combo list.
View 3 RepliesOk what I have is a combo box with a set of default items but i want the user to be able add new items to the combo box's item list. i currently have a text box and a command button for the user to use to add new items to the list with this code attached
ComboBox1.Items.Add(TextBox1.Text)
when the program is closed the item is no longer in the combo box items list.
so what i would like to know is the correct code to make the additions to the combo box's items list permanent or at least until the user chooses to remove them.
I am creating a program that allows a user to view a list of foods in a combo box, add that food unto a list box, and adds all of the calories of that food together. When the user highlights their select food, the program automatically shows the amount of calories for that particular food in a text box. The program is getting the food and calorie information from an access database. I managed to get all of the food calories to add up properly, however, I ran into a problem. Sometimes, well, most of the time, when I select certain foods from the combo box, the program automatically reselects another random food, usually a food that begins with either an A, B, or C. Also, the other random food that the program chooses usually has the same amount of calories as the food I originally wanted to choose. I have over 6,000 items in the database. I don't understand why this is happening. This is what my code looks like for the button that adds each food to the list box:
Private Sub Button4_Click(sender As System.Object, e As System.EventArgs) Handles Button4.Click
Foods_Selected.Items.Add(ComboBox1.Text)
Static i As Single
[CODE]...
And this is what my code looks like for the button that adds all of the foods together:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim x As Single
Dim TotalCalories As Single
[CODE]...
I have no idea what to try. It's like the program just skips over random foods, even though all of the information for them is in the database.
how do i program by saying if a certain item is selected in a combo box then that item will not appear in a second combo box. i have this code for now but it does not work
[Code]...
I know how to add the items during design time but how do you add the items through code. I want to fill the combo box in the datagrid with the results of an SQL query?
View 3 Replieshow do i program by saying if a certain item is selected in a combo box then that item will not appear in a second combo box i have this code for now but it does not work
j = 0
Do While j < cmbSession.Items.Count
If (j <> lesson) Then
[code].....
How to get length of a particular item, for example item no. 5, in a combo box?
View 1 Repliesi made a media player program and i am having many problems! the main issue is that i have a listview that displays music playlist, how can i get it to navigate to the next item after the clicked one is over that way users don't have to click on the next one to continue their playlist?
View 14 Repliesi am trying to bind the combo box through details view in vb.net but unable. i am making a login form and i want to display two values e.g usertype admin , employee in combobox but when i run the form it doesnot show me anything in combo box although i have selected the true binding source and display member but still unable. Another problem is in my form load event if i left this line written
Me.StaffTableAdapter.Fill(Me.StaffDataSet.staff)
it not only shows me the combo box values but also types in the user name and password which is saved in database. All i wana do is when the form gets loaded ..user name and password field should be bland but the user type field should show two values.
I have a Datagridview with a database attached , but I want to search the the collums by picking the collum I want from a combobox, writing in a textbox and pushing a button and the arrow in the database will move to the row if anything is found, BUT I don't know how to add the collums from the database to the combobox and do the search using the button.
View 3 RepliesI would like to implement a code which executes what a user selects from the combobox and display related data from the access database on the datagrid.I have managed to connect to my database.How do I connect the combo box action to display information on the datagrid?elow is a code that am using to read the contents of my table from the database and display it on the datagrid.
cnString = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False;Data Source=C:UsersHomeDocumentsIADCS PROJECTS 2011SAD PROJECT 2011StockControl.mdb"
sqlQRY = "SELECT * FROM Category"
[code].....
I am a new one to vb 2005 and I have no idea to get the datagrid filter view option.I developed a new program which have an datagrid view.I want to filter the data based on the 3 thingsthe first one is the "dates between start and end with 2 datetimepicker controlhe Second one is 2 of the filter combo boxes.For ex: it should filter the data between the two datetimepicker
View 4 RepliesI'm having some weird trouble with adding a new value in a combobox.The combobox has a datasource which is a bindingsource.The combobox's list is filled from a different table through a different bindingsource. Combobox.valuemember = "ID" and Combobox.displaymember = "Description".When a user types a value in the list, I want to add the new value to the table which is the source for the list. (Which is not the problem, but I don't get that far) The problem is that when the user types a new value in the box, it totally disappears as soon as the user tabs out of the combobox. So, in the event combobox.Validating the combobox.text property (nor any other property) does not show the new typed value.
View 12 RepliesI was wondering if it is possible to combo box with tag on each item? All item tag has a different value.
cb_rate.Items.Clear()
While Reader.Read
cb_rate.Items.Add(Reader.Item("f_type_desc"))
cb_rate.Tag = Reader.Item("f_amount")
End While
If I select the first element of a combo box, what will be the index value of this code:index = ComboBox1.SelectedIndex.[code]
View 2 RepliesDim ds_Details_all1 As New DataSet
Dim dgv_newtbcolumn As New DataGridViewTextBoxColumn
Dim dgv_newcbocolumn As New DataGridViewComboBoxColumn
Try
If ds_AEGM.Tables(0).Rows.Count <> 0 Then
[Code]...
assign a particular value to each item in a combo box? Or, alternatively, some similar control? Specifically, I want a drop down list to select from a list of countries. I then want to get the ISO 2 letter abbreviation for the selected country. I could have a section of code like this
selected_country = cmb_country.SelectedItem.ToString()
if selected_country = "Afghanistan" Then
country_code = "AF"
ELSE IF selected_country = "Aland Islands" Then
[code]....
but this will get rather tedious.Is there an easier way to do it? I would like to be able to assign a value to each line in the list, like
Afghanistan, AF
Aland Islands, AX
Albania, AL
then get the value for the selected item. Is this possible? If not with a combo box, then any other control?
When insert in the first char then it display the related item the combo box
View 9 RepliesI am using VB 2008 Express Edition.
Say I have Combobox1 with items (1)Breakfast (2) Lunch (3)Dinner
and I have combobox2 with items (1)Apples (2)Bananas (3)Grapes(4)Oranges
Now when I choose Breakfast in combobox1, I want user to see all 4 items in combobox2. But when I choose Lunch in combobox1, I only want user to see (1)Bananas(2)Grapes(4)Oranges in combobox2, hiding Apples.
Does anyone know a code where I can hide an item in a combo box depending on the condition?
i need to use the selected item in combo box when user selects for example GREEN from be drop down list after than i need to put that green into the rest of my code, i need to draw a line in green but i dont know how to tell the program to use Green i tried setting up a variable for that, like : Dim rang as string = cmbcolor.selecteditem but it doesn't work
View 7 RepliesJust a simple question, i have a combo box with the data source defined.The combo box display member it's a number, and i need to display a string in the first position of the combo, something like "Select", or just to show the user that nothing it's selected.It's possible? Or just changing the database column to string?
View 6 RepliesWhen my application starts, it scans the computers registry for COM ports and adds them in the combo box. The combo box first index is just a blank, and the second is COM1, COM2,...COMn. What I want to do is by default, I want my program to select the first COM port in the combo box, so in this case, COM1.
I know I have to use the PORTNAME property of the serial object, but not sure how I would set that equal to the 2nd index of the combo box.
The ComboBox Items collection is an ObjectCollection, so of course you can store anything you want in there, but that means you don't get a Text property like you would with, say, a ListViewItem. The ComboBox displays the items by calling ToString() on each item, or using reflection if the DisplayMember property is set.
My ComboBox is in DropDownList mode. I have a situation where I want to refresh the item text of a single item in the list when it gets selected by the user. The problem is that the ComboBox doesn't re-query for the text at any time besides when it loads up, and I can't figure out how else to do what I want besides removing and re-adding the selected item like so:
PlantComboBoxItem selectedItem = cboPlants.SelectedItem as PlantComboBoxItem;
// ...
cboPlants.BeginUpdate();
int selectedIndex = cboPlants.SelectedIndex;
[Code]....
This code works fine, except for the fact that my SelectedIndex event ends up getting fired twice (once on the original user event, and then again when I re-set the property in this code). In this case, it's not a big deal that the event is fired twice, but it's inefficient, and I hate that. I could rig up a flag so it exits the event the second time, but that's hacking.
How can I convert the item number in the combo box to be use able? I keep getting told to change RaceNum to a double but I need the RaceNum to stay as a int so it reads the files 1-15 but it starts at 0.
[Code]...
I ahve a combox (cbnames) on a login form which is populated with items. I make a selection and click on ok. Form1 appears and I have a textbox which I want to fill with the selected item from the combo box.
However, on form1 (view code) I don't appear to see cbnames. cbnames is available on the login form. How do i make a combobox public? or accessible to other forms?
I want to hide an item in a combo box with out changing indexes of other items..the collection of the combo box is hard coded. ex: if I logged as a username ABC then combobox shouldn't have a item called ABC and want to remain other items' indexes as previous.
i can't use cbxOption.Items.RemoveAt(index) becouse indexes will change.
how to program by stating if the first item in the combo box is selected then
View 1 RepliesHow can i load datagrid view combo using code? and how can i make it just like a ordinary combox, so that i can text inside of it?
View 1 Repliesthe code for adding items in the combo box but without duplicates. i have an assignment which is a simple web browser. the combo box will be the address bar. and everytime i input an address, it will be added in combo box and should not repeat just like in the browsers
View 3 Replies