I am trying to create a form that can be modified by other developers. For example kind of like firefox, developers can make extensions/toolbars and firefox uses them. How I can write my code so that other developers can add controls/toolbars to my form.
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I have a modified button control with a string array in it. I am having trouble sending the string array to the form with the modified button on it. Anyone know what i can do? The form uses a arrayList to hold the buttons since they are made at runtime.
View 4 Repliesam working on this chat app for a client and i have got most of it working with but i have hit a snag when the user clicks the SEND PM button it does what it is suposed to sends the username to the client and then opens the pm window but when it then freezes when it loads the form
View 3 RepliesEvery time I modify something on a form (add or delete controls , modify their colors etc) , when I debug the program (with the Play button), I get a message saying: The file C:........MyForm.vb cannot be modified at this time .
Why is this happening? I have noticed that the only way to bypass this problem is to save before debugging , but that is not convenient because I don't want to save something that I haven't decided yet. One more thing that I have observed is that this only happens in projects that have been created with the Upgrade Wizard (from VB6). This never happens in new projects. Does anyone know why is this happening ?
Can Windows Form Trigger when a control has been modify or not ? I mean i have 3 panel and inside of those panel have a textbox, how am i able to find whether some of the textbox where modified in a specific panel? i.e panel 3 textbox2 has been modify i want that i have a notification that panel3 textbox were modified
View 1 RepliesI am creating one application using visual basic.net and sqlce I have two forms name Form1 and Form2.
I used Form1 to add data to database using OLeDb command I used Form2 to show data in datagridview by using dataset[code]...
Form2 Datagridview show the old data only, it do not show the recently added data by form1. I mean when I build my application datagridview show the data which is already in the database, but it does not show the data which is added by the form1 during run time.
Some one suggested me to fill the datagridview at run time by using OLeDB command. Then I created Form3 to fill the datagridview2 by using OLedb command and datareader and found that Form3 shows the recently(added by Form1 at run time) added data.
I have this piece of code:
ConnectToDb(pgconn, "MINTACEG")
pgcommand.Connection = pgconn
pgcommand.Parameters.Clear()
pgcommand.Parameters.AddWithValue("@b_sorsz", frmfokkonyveles.dgvfokbiz.SelectedRows(0).Cells(1).Value)
[code]...
Scenario: VB2010 express + Sql Server 2008 express.
I have a master/detail form where I can modify a record. With VB 2010, I use the new Table Adapter Manager which handles all Updates/Deletes against the database inside a Transaction. Question is that before I update the modified record (only the master one), I need to insert it in another table (history table). My question is how I make both insert and update inside the same Transaction. By code? Using Stored Procedure?
Is it possible to create a circular visual basic form. I see plenty of tutorials on how to do this for VB6 but none on Visual Basic Express.
View 7 RepliesI'm working on a simple base form in which all the other forms in the project will inherit.This base form only adds 5 properties (at the moment) dealing with painting a gradient background. The problem I'm facing right now is when I change a property on Form1 (the test form) and click run it doesn't show that change. I also checked the .designer.vb file and when I make a change it's not added to the code behind file, I'm at a loss right now to why
View 5 RepliesAlthough X,Y value are added, the location didn't change in the printing.
For Each line In _sigData.Lines
f Not line Is Nothing Then
For Each pt As Point In line
[code]....
Is it possible to create instances of controls on a form ? Of course I mean visually , not just by code. After all, these languages define themselves as "Visual" so they should provide that possibility. It is important for the instances to be visible during design time because otherwise we could only guess where those controls might "land". Nevertheless , I have the feeling this is not possible in VB .NET but still I thought I should ask first ...
View 11 RepliesAfter i've upgraded my project from vb6, i've changed the text from a textbox, and after that i've tried to run again the project Now I get this error: An error occurred creating the form. See Exception.InnerException for details. The error is: Control array element 0 doesn't exist. In this code
[Code]...
I don't know what's wrong. I can't figure out what's causing this error. I've tried placing a breakpoint on the load event but this error happens before. I tried a breakpoint at the form's class, but it crashes still. I haven't done anything major, just added a couple GUI elements, and I've tried deleting them to get to the point I was at before this error, but no luck.
View 1 RepliesWhen I use the
frmRegister.Show()
I get this error when it attempts to show the form:
An error occurred creating the form. See Exception.InnerException for details. The error is: Illegal characters in path. How can I get rid of this error? I only want to show a form...
Is it possible to create a form bigger than my screen resolution ?. My screen is 1680 x 1050 but i need to create a form of 1920 x 1080.
View 6 RepliesThis might seem like an odd question, but is there a way to make it so that any form that is created based on another, would have some comments in the code behind of the new form?
For example, i create a form called frmONE, and i put in code like this:
Overridable Sub frmONE_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Make sure you call these functions, in this order:
[Code]....
I was able to do this all successfully in VBA, but just couldn't convert it to work in VS 2008. Basically I'm in search for a script that Loops the following 3 processes, I also need it to run from an .exe file or similar with no UI (User Interface) so it constantly runs in the background (This is all to go with a multimedia software):
if file 'c:X.txt' has been modified equal to or more than 15 minutes ago, then send key R.
if file 'c:X.txt' has been modified equal to less than 5 minutes ago, then turn on numlock light, if not then turn off light.
if file 'c:X.txt' has been not been modified for the last 4 hours, then send key delete file.
I'm making a sort of like platform for archive editing.This includes opening archives, displaying content, extract files, edit files, place files back in the archives.My problem is, that I can't trigger the program to replace a file to the archives as soon it is modified.I did think of making a thread, checking all file modified dates, but since it regards over 100 files it lags. So that is no option
View 4 RepliesI have some code that does a Find & Replace in some text files, and closes the file when complete.However, when I try to use the Kill command in VB to cleanup these files (they are temporary files) when the program is closed, I get errors that the file is in use by another app or process.Is there a way I can force these files to close first? This also happens when I scan a document using the EZTWAIN.dll Scan to native function.Everything goes fine, but if I try to scan again to overwrite the file, the file is in use.This is happening on Windows Vista SP1.
View 10 RepliesI have two tables "Person" and "Alias" in a one to many relationship. I have a DGV for "Person" and want to use a combobox for the Aliases. I also have a textbox and a button for the user to type the alias name and click the button to add the alias name to the combobox and update the dataset. I keep getting the "Items collection cannot be modified when the DataSource property is set." Error. But if i use a DGV instead of a combobox for aliases, I have no errors and everything works fine. If I remove the datasource property for the combobox it will not get populated with the data already entered, so how, or can I, set it up where the combobox gets populated when the form loads and able to add items to the combobox????
View 1 RepliesVisual Basic Project - Student Check In Form using an Access database backend This form needs to draw information from an Access database containg tables for STUDENT, INSTRUCTOR, and SECTION. These all need to have primary keys and ids. When (the user) clicks on the drop down box that displays all the sections:
{Table Tennis 1, Table Tennis 2, Table Tennis 3, Billiards 1, Billiards 2, Billiards 3}This should populate the listbox or datagrid from the STUDENT table with the Students that have the same SECTIONID as the SECTION selected in the drop down menu above.
After the Student list has been populated (the user) clicks on a student name in the listbox/datagrid and this inserts that student into the CHECKEDIN table that has a datagrid/listbox associated with it.
This is a great project to practice connecting a database to Visual Studio 2008 .net and playing with the data that has been pulled in. You could use SQL instead of Access.
I have read about Network.Downloadfile and I think I understand it! I want to know if there is an easy way to test a files date modified before downloading it. I have a lot of files in the folder. I really want to "sync" the folder. I don't want to copy every file every time I want to only download the file if I don't have the file in the destination location or if I have an Old copy.
View 4 RepliesI'm trying to create a User Agreement window that has the ability for the user to choose to not show the window on the next program start up.
View 1 Replieswhen i try to run my form it says:An error occurred creating the form. See Exception.InnerException for details.The error is: Cannot create ActiveX component
View 5 RepliesI have another question (and anticipate that I will have about two more before I'm done with my class project). Here is my issue (and I'll copy and paste my code for clarification). I need to link up the control from the form on either side of the current form that I'm working on so that if I click on the buttons that I'm titling previous and next that I can click on the proper button and either go directly to the previous form or the next form. I was successful in doing this for two earlier forms on this project (with some direction from a couple of helpful people on this forum before), but for some reason, no matter what I details I use the controls do not connect to the previous and next forms.
Option Explicit On
Option Strict On
Option Infer Off
[code]....
I have two forms , and I want write a code like ( form2.show=true & form1.show.false)
View 2 Repliescreating single instance form in MDI Application. How to check whether form's instance created or not?
View 6 RepliesOk, I have two forms. One which shows Personal Details of a client , the other which shows Calulations of their next Insurance bill.How do I create a so called 'Summary Form' which shows their details and insurance amount when I open the Summary Form ?
View 3 RepliesI am trying to create a program to order pizza what i have is a textbox to input the customers name, i have a masked textbox for the phone number, a group of two radio buttons for pick up or delivery with if delivery is selected a rich text box appears to input an address, a group of 3 radio buttons for pizza size s,m,l and then also a list box with 10 items for toppings what i want is when i hit the order button for the selected buttons and inputted info to generate a order summary on another form?
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