I am new to these forums. I had a VB.net class several years ago and cant seem to find this info in the text from the book used in the class. Here is what I would like to do. I have a 2 forms. One with three buttons and the other with a listbox. When I click on one of the three buttons (on form1), I want to fill the listbox (on form 2) with one of three arrays. is this possible, it seems like it should be.
View 15 RepliesI am trying to autoselect pre-programmed items in a listbox when a form opens with the control on it.but i cannot find a proper method to select all the items in the listbox and hold the resulting text as a string that will later be saved to a text file. i do not need help with saving the text to file but rather selecting the items in the listbox.so, after alot of trial and error and no luck I think I am supposed to use
ListBox.ObjectCollection
propriety. but i have no clue whats so ever in how to manage to select all the items in the listbox when this form opens...if this does not make sence then I will rephraze it.
i'm developing an application for my graduation.I have a form with one picturebox, one list box and 4 text box and one button.I am tring to do this:the user fill the 2 text box with some values, and other 2 text box with the path to some images,and when user click on the button the list box will fill dinamically with values , and when changing it, the image of picture box will change with associated image.
View 2 RepliesI'm using one Access Database and DataSet, BindingSource And Table Adapter. My question is: how to fill one listbox on my form with dates from one row from Database.
Look at the picture:
[url]
So listbox needs to have 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20.
How to to this, code?
I just want to display data of a single column from an oracle table into a datagridview or a listbox for readonly with no requirements to make changes to it. Simply display the information.What is the best way forward... To used DATAADAPTER or DATAREADER.s DATAGRIDVIEW SLOWER TO FILL THAN a LISTBOX.i am using the following code to fill datatgridview but for some odd reasons at time it is slow to display the data. I want to use listbox instead
Dim ds As New DataSet
Dim adp As OracleDataAdapter
adp = New OracleDataAdapter("select customer_name from customers")
[code].....
I'm trying to add a code,so that I when an item in a listbox an apllication will be run.A user inputs a name for the listbox eg "hello"Then the user specifies the path of the file to be run. The name will be fixed.eg : test.exeIf the user then says the file test.exe is locted in C:mygame, he will point to that path.NameGame = textbox name where user inputs the name that should appear in the listboxSearchbox = textbox to allow users to search through the listboxEntryBox = box where the path appears, just for checkingI know I can load a folder with this :
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LoadFolder.Click
Dim FolderBrowserDialog1 As New FolderBrowserDialog
[code].....
How can I make the main form grey out/translucent black when a new form opens on top?
View 8 RepliesWhenever I want to reopen a project that I didn't worked on for several month and want to view my form in design mode I receive following error.
Warning1Method not found: 'Void System.Windows.Forms.Design.ParentControlDesigner.WndProc(System.Windows.Forms.Message ByRef)'.00
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I used this project in VB2005 express, but also in VB2008.
I have a form ( call it NewForm ) that can be opened from many other forms, but I don't want to have the user to run into the problem of having many windows/forms open.I want to close the calling form and open NewForm.NewForm will prompt the user for information, but if the user doesn't find what they are looking for I want to have a "Cancel" button on the form. With the "Cancel" button I want to go to the previous form.is there a way to tell which form called NewForm so I can just reopen/unhide that form/window.
View 5 RepliesWhen I initialize a new form to open, the subroutine in the new form starts before the new form is shown on the screen and so when the subroutine finishes and the MsgBox comes up, the form isn't showing.
Is there a way to make the form pop up first before the subroutine starts?
when you login it is the meaning that another form opens. But as soon as the new form opens up everything closes. The code i used is this:
Public Class Form1
Public Goldhave As Integer
Public UserName2, Password As String
[Code].....
I am using VS 2008, Windows XP R3, and Visual Basic.When I open some forms in the form designer, (In Solution Explorer, right click on the form, then select View Designer) the form always opens as Edited. An Asterisk "*" appears after the form name in the open window tabs. If I open the form to just view the code (In Solution Explorer, right click on the form, then select View Code), the form opens normally. This happens for just some forms.
It always happens for the same forms, and never happens for the other forms. What I am missing in those forms where the designer always thinks the form has been edited?
When opening a button and opening a new form as soon as it opens it close for some reason but its not giving any errors as to why its doing this now I've checked the linked linking it to the next form that's fine.
Private Sub PrintPerscription_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Login.con.Open()
sql = "SELECT Patient.* FROM Patient where Patient.Wardno = " & Login.WardNo.ToString
da = New OleDb.OleDbDataAdapter(sql, Login.con)
noOfRows = da.Fill(dsPatient, "Patient")
[Code] .....
I have a form that opens a other form in multi threading but after that it wont close I have tried:
application.exit (Works but closes the whole app)
me.close (nothing happens)
end (nothing happens)
me.hide (nothing happens)
This form is form1 that wont close and opens form3 I every other form works.(7 forms total)
I need to create a program that requires password entry. I was thinking of having a form that the user uses to set the password that only opens once (unless a button on the main form is clicked to reset the password.) once the password has been set, the form closes and another opens to enter the password and for each and every time the program is run. Another thing is that if the password has been entered wrong 3 times, the program gives a message box and closes on the ok button.
View 7 RepliesI am trying to reference an Array when a form opens. When the code below runs I get a "Type Mismatch" error.
Dim strText0 As String
strText0 = Form_frmRVNumber.Text0.Value
Dim strRVNum() As String
[Code]....
I am creating a form and I have a label that will display the user's name, but what I need to do it trigger a text box when the application opens that will allow the user to type in their name and then assign that value to the label in my form. How do I trigger the text box and assign the value to my label? My label is named lblStudent.
View 11 RepliesI just want to know how to close current child form and opens another? In vb.net.
View 2 RepliesI am creating a program that has many text boxes and labels on the form. I want to be able to edit fields close the program and open it up so that the form opens with the last editing I did in the fields.
View 1 RepliesI'm trying to set my software up so that when I check the checkbox for winRAR to be installed, it'll pop up a new window asking if I want to install the 32 bit version or the 64 bit version. I have no problem getting the window to show up but than if I try to exit out of the window and than uncheck the box (in case it was accidentally checked) it'll just open the window again. I am thinking I have to tell vb that when I uncheck the box it shouldn't do anything.
Here's my code.
(I know that the Nothing under the Me.chk_rar.Checked = False doesn't work but I left that blank once and it just opened a bunch of windows and crashed my system. I know it says "E:Music" right now but I just pointed it there so that there was something there normally it'll point to the other window. If I need to created a new Form for every little window that I have for instance the little window that I want to pop up, do I need to create a new form just for that little window to ask which architecture is needed and than giving the options for 32 bit or 64 bit.
Private Sub chk_rar_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chk_rar.CheckedChanged
Me.chk_rar.Checked = True
Process.Start("E:Music")
Me.chk_rar.Checked = False
Nothing
End Sub
How to fill a listbox with data from a SQL (OLEDB) so that you can see one row of data with various columns to show the different values for that row,ie. all of the SQL statement as one row.[code]...
View 10 RepliesI have two forms. The first one opens the second one after all fields are filled out successfully. The problem I am having is I want to close the first form when the second form is displayed, but every time I try using frmCustomer.Close() when the second page (Result) loads, it completely closes the entire application.What am I doing wrong? What is the correct way of doing this?
View 5 RepliesI am using VS 2008/VB with Access 2007. I have 2 forms that I use to create entries. In the first form (fomr1) I select the type of entry which opens the respective form (form. In form1 I use some code to read through a oledbreader the id rows and get the max value in that column. I take that value and I add 1 to it and then assign the value to a textbox in form2. The whole process worked fine until today which gives me this exception "An error occurred creating the form. See exception.innerexception for details. The error is Object reference not set to an instance of an object. "
[Code]...
I don�t want to use built-in data binding through Visual Studio, I would like to learn and code directly. I have created a form with a listbox on the left side and several texbox on the right side. I have code working that populates a listbox from my data reader (MyReader). The listbox works fine. There are two (2) buttons over the listbox to select All Active records or All Inactive records that queries the field �Status� in the �tblAdvocates� table.So the listbox works fine. Problem is trying to setup the SelectedIndexChanged function. I can�t figure out how to take the selected record from the listbox and use that to fill the textboxes. Do I �re-query� the database using the ID field from the table? Do I use the MyReader from the form load code and pull the data from that?
Here is my code:
Imports System.Data.SqlClient
Imports System.Windows.Forms.ListBox
Imports System.Data
Imports System.Data.OleDb
[code]....
I am trying to fill filenames from a folder into a listbox. Now what i want to achieve is that if in the folder there are 2 files with same name but different extension for example song.wmv and song.mp3 then i want to show only .mp3 filename in the listbox. This is how it works in VB6. PERFECT! How to make this code work in .net.
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I'm trying to set up a form that I can use to sort names. What I've done is set up a table with with the persons name and info in it as well as one field for a platoon number, and my form is basically 5 listboxes. I want unsorted names to appear in the first box, and sorted names to appear in their coresponding listbox (based on the platoon number in the table). I set up a query through the wizard (from the listbox itself) that will pull the info that I want, but so far it seems to pull it to all the listboxes rather than just the one I want.So far I've figured out how to make the listboxes fill on form load or on a button click (though in both cases all the listboxes are filled with the same data).Eventually I'd like to be able to sort these names in the various listboxes by dragging and dropping, but one thing at a time.So:1. Am I going about this from the right angle or am I making this needlessly complicated?2. How can I get this to sort the data to the correct listboxes on formload?
View 1 RepliesI am trying to build a form that has a button on it that will open up a 2nd form that allows me to view and edit the connection string. I believe the connection string is also called app.config, and can see that in the Solution Explorer for the project.All I have managed to do is drag a button onto my main form and relabel it. I have no idea how to create code to access the connection string.
View 2 RepliesI created primary/start up Form for my VB2005 app (called Admin.vb). Now when I go back to the solution explorer, I can see Admin.vb but it doesn't have the form icon and clicking it doesn't open the form. Instead it opens the code.All of my other forms are fine and have the right icons and open in the [Design] view ...The form obviously still exists as it opens in runtime but I can't seem to open the design view for it.
View 6 RepliesI am having Socket server, and I have two forms. One is the main form for the server and the other one is a custom made messagebox. When a request comes to the server the main form has to invoke the second form (messagebox). When the main form is open for the first time everything works fine. But when I close the main form without closing the application and open it again and request comes to the server the custom made messagebox opens but it freezes and looks like this:
[Code]....
I currently have a program that I made which opens other apps packaged with an installer. I have set the installer to install everything to the Program Files folder. However, not all computers have a C: hard drive. I have a way in which they can enter their drive letter in one form then in the next form it remembers the drive and will take them to the program. The problem is my program stores the drive letter in an xml file. On the startup of the program it looks in the xml file to find the drive letter, if there is no drive letter the form opens then lets the user set his drive letter. The xml file is stored in the folder "Math Wizard" in the Program Files folder. But if not all computers have C:Program Files I need a shortcut to the program files folder. I have been trying to use %ProgramFiles% (%Program Files% + "Math Wizardconfig.xml") but vb is saying that the % is an invalid character. Here's my code:
[code]...