VS 2008 Creating Storing And Managing Forms Dynamically?
Jan 20, 2011
I'm making a LAN instant messenger and I'm trying to achieve something similar to how MSN will open a new chatting window when you double click on a friend. My main form has a list of friends, and I want to create a new chat window when they double click on one of those friends. I've created a "template" chat form which I want to generate dynamically, and I've run into some problems I need help with. Lets look at the code I already have.
[Code]...
Now, call me a newb if you will, but I really don't know much about threading and all that hocus pocus. Some guidance in the right direction would be great.
EDIT: ClientWind is the chat form.EDIT: That's weird. It doesn't occur with the actual builds.
I'm making a LAN instant messenger and I'm trying to achieve something similar to how MSN will open a new chatting window when you double click on a friend. My main form has a list of friends, and I want to create a new chat window when they double click on one of those friends. I've created a "template" chat form which I want to generate dynamically, and I've run into some problems I need help with.[code]The form will only appear once as far as I can tell, and the chat form has events such as button clicks; an error occurs when I try to change something like the text property of a label for example (eg. clicking a button on the chat form changes the text of a label on the chat form will cause an error to occur). The error I actually get is:[code]Now, call me a newb if you will, but I really don't know much about threading and all that hocus pocus.
I'm currently making an application that involves time tables / scheduling. I'm required to generate a timetable for school teaching activities. in this application, I want to display the time slots using labels and I want to enable users to drag them around to place the subject cards in the available slots. I'm even confused with the control to use for the time slots. Right now I'm thinking of using datagridview for the time slot. So I'm trying to drag the labels around and placing them in the datagridview cells.
I have seen a few .NET apps use .db files. I am not new to Visual Basic, however I have never created a VB app that uses databases. I do know PHP pretty well, and working with databases in PHP I am familiar with.
I am a beginner programmer, and taking my first course in VB.NET in college. I am writing a program that teaches the user step by step to solve a rubiks cube. One problem I am having is how to manage the 20 forms that make up my program. Currently, when the user procedes to the next step, I make the current form invisible, and show the next form.
I am dynamically creating and adding a ComboBox to a specified column in DGV. I also set a DataSource, DisplayMember and ValueMember for the created ComboBox. Somewhere else in my program, I select a number ( let's say 5 ) and based on that number I want to change the SelectedIndex of the current ComboBoxColumn ( I actually loop through the Columns collection ).I tried something like this in a event handler I created:
vb.net Private Sub combobox_validated(ByVal sender As Object, ByVal e As System.EventArgs) Dim combobox As System.Windows.Forms.ComboBox = sender Dim colIndex As Integer = combobox.Tag
[code]....
You will notice here, that I'm not actually trying to change the .SelectedIndex property, but the Value of the current cell.How do I reference the actual ComboBox?
Code: Public Class Form1 Dim NPB As Button Dim x As Integer
[code]....
As you can see, when I open a program from my menu, a new button will be created with text similar to this, "C:Program ". The button it self will not do anything. How can I create the method at the same time the button it is for is created? Also how can I change the text do that it gives me, for example, CCleaner.exe instead of the whole target path?
I've got a "Loading" form which I display as a modal form when doing lengthy processes. I'm using the below to keep the form centred within the child form performing the process. However, when minimisingmaximising the "Loading" form appears before the parent making it look a little unprofessional. Anything I can do about that (Delay it appearing or attaching it in a different way)?
I currently have an If...Then statement that checks if all fields of a form have been filled before saving the info in a file. I'd like to be able to tell which field has not been filled to give the user a dynamic message (at the moment, it only tells them that the checklist is not completed ) :
If (txtNoDemande.TextLength = 8 _ Or txtNoDemande.TextLength = 13 _ And txtDateLoad.TextLength <> 0 _
[CODE]...
Is there a way to determine which of these conditions is false without having to do a seperate If statement for each ?
I have a main form having a comobox with categories populated in it. for adding new categories I have a button1 on this main form. On button1 click I am creating and showing a new form2 for adding new category. I want this new added category in my main form combobox on closing this new form. I have checked mainform_activated even but it is not fired on close of form2.
I am dynamically creating and adding dropdown controls to DevExpress XtraGrid.That works fine and I can add a dropdown control to any column I wish.My main problem is that I need to have the first element in the dropdown control displayed. But after I dynamically add 3 dropdown controls to the grid, only the last one has the element displayed. The previous two do not.Although, I add the elements
this is what the code looks like:
vb.net Dim column as DevExpress.XtraGrid.RepositoryItem.GridLookupEdit For i as Integer = 0 to dsSometing.Tables(0).Rows.Count - 1 column = New DevExpress.XtraGrid.RepositoryItem.GridLookUp
[code]....
The code will go tru and add lets say 3 dropdown controls, set their .DataSource to datasets I need, but it will only show .NullText of the last added control.
I am going to try to explain this the best I can I didn't develop the original version of this, or the part that rights it to the database.in our company, there is a program that takes PDF files and stores them in our mysql database as blobs. The blobs are attached to inventory items by the inventory items ID. they are basically certificates. That is basically all I know about it.
however, I was asked to show the PDF files for certain associates that may want to view them. ie, if a sales person looks up item 1234 and there is a stored PDF certificate for the item, be able to access the pdf and show it to the employee if they want to see it.The code that I found that was previously wrote to view the PDFs takes the blog, create the file in the app.path directory, and then uses shell to launch it like a normal PDF.
I don't have a problem using the adobe pdf reader to launch the file, but is there a more efficient way other than creating the file on any machine in our company where someone wants to view the PDF ?
I want to create a simple treeview from a database table. It is going to be recursive and I want for each item to show the description and in the background of each item hold a key value. Then when the user selects a node I can use that key value to select the data.
Just looking for a bit of advice really on the best way to go about something.I am creating a new freeware game in which I am creating like OS for the game. So far I have the OS Home screen (Desktop) with a menu a bit / time / date etc.hat I am trying to do (and not sure the best way to do it) Is I want to be able to create windows within my virtual desktop 'form' as Windows does essentially for instance clicking on 'start' and going to 'Internet Explorer'I have turned the boreder style to no the desktop form and any other thing I do so its my look and feel but I am not sure the best way to go about this. I possibly thought creating my 'windows' as panels and just showing and hiding them but that doesn't appear to work when I overlay them.
I have a simple application with a main form and an options dialogue. The options dialogue has various TextBox's and drop downs where the user can make changes and OK/Cancel buttons for when they're done.On the FormClosing event of the main form, I save these settings to an XML file. When the program is first run, the settings are loaded back into the options dialogue. The application reads settings directly from the controls in the options dialogue during run time.
I wanted to make an executable file from my program. I already know that compiling your project creates an executable, but I wanted to know how to make an exe with my program.
I'm developing a shell (think LiteStep or SharpE) for Windows using Visual Basic .NET, and I have reached the point where I will need to get into theming other windows that doesn't run inside the shell itself.Modifications I will need to do is to change their title bars - probably using some kind of API call - to match the design I've integrated into the shell itself, if that is even possible. Having Aero on windows running in a shell that doesn't even look like Aero at all isn't very pretty.) Is there a chance I might be able to do this, or will I have to use a 3rd party application and/or develop my own little programming language for shell-specific applications (which would be a pain)?
i am creating check box's dynamically and assigning them names like "chk_1" and "chk_2".now if later in my code i want to check if they have been checked how can i do that.if i do something like if chk_1.checked is True then i am getting error that chk_1 is not declared.Which is true.i am using VB.net 2.0 i can post my code if needed.
I am working on a simple windows app that will take our TripleDESCryptoServiceProvider Key and IV from a file and use it to Encrypt and Decrypt strings, etc...This works great and has for years in a utility program, but I want an easy app that can read the Key and IV...following format in the txt file:
And then create the Encryption Pair...Currently I have the following
clientDESCryptoServiceProvider = New _ TripleDESCryptoServiceProvider clientDESCryptoServiceProvider.Key = New Byte() {111, 222, 333,...} clientDESCryptoServiceProvider.IV = New Byte() {1,2,3,...}
Is there any way to pull the {111,222,333,...} and {1,2,3,...} from a text file and create the Byte() that is required?I can read the info from the text file, but cannot seem to create the right format for generating the Byte()?
I am reading data from an excel spreadsheet and i want to create several arrays to save the data in (according to how many rows of data i have which is an unknow untill i actually read the sheet).
I already have a menutoolstrip and i want to add the menuItem dynamically.I am able to add the first menuItem however, i have no idea how to add submenu.
I currently have this code to create an asp table [code]where PH is my placeholder for the table to appear in.This code creates a 1 celled table how do i get it to create multiple rows and cells?
I am having problems creating charts dynamically, using MSCharts.If I drag a chart control into a form, and then use this, I have no problems. However, if I change the code and try to create the chart dynamically, then I just get a blank white rectangle, and no graph, axis or anything.I am trying to create the graph once a user clicks a button. Here is the code I am using.
Public Class Form1 Dim Chart2 As New System.Windows.Forms.DataVisualization.Charting.Chart Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
I've got a dictionary<string,string> that I need to access and use on several windows forms. In asp.net, I could store it in Session and use it from any aspx page. How would I do this in forms?
to create excel workbook dynamically where data will be input and manipulated by user. i want graph as well to be created using the data i manipulated and entered.i want as many as work sheets to be added in workbook once it is created.
I would like to dynamically create an object (in my case a thread) and then be able reference that object. Simplistically put, I would like to read from a text file and then process each item using a thread (so that I don't have to wait for each item before starting the next). The problem is that I cannot think of a way to create a new thread dynamically ie. thread name so that I can then wait for all created threads before doing something else.
I am working on a project that requires me to read a table of items, and then display the items as button with a photo for a POS system. Any suggestions on how to implement this? This project is using .NET 3.5 and a SQL Compact 3.5 database as a data store.I am using windows forms over an MDI form.
