I am doing some graphics work like Paint event, but I found a problem that the form will flash again and again whenever I call the method IRefresh() or Invalidate(). What can I do if I want to update a graph continuously but not causing the form to flash?
View 1 RepliesI need to be able to display 60 * x. X is going to be the time between hitting a Stat button and a Stop button in seconds. I need this to be shown until it is stopped. So i was thinking something like txtBox1.text = 60*time, but I do not know if that is correct and I do not know how to get that time. Also I am not sure how to continuously update the text box.
View 6 RepliesI am having an issue with the SQLCommand query update handling apostrophes. I have a gridview that accepts edited text which might have apostrophes and other such accent characters.The UPDATE keeps throwing errors on the apostrophes in the text entered causing the SQL UPDATE to fail.
Here is the code:
Dim lbl1 As Label = GridView3.Rows(e.RowIndex).Cells(0).FindControl("Label1")
IDVal = lbl1.Text
[code].....
I'm using .BeginConnect with an AsyncCallBack and for some odd reason when I try to add a string to a textbox using the sub below, from a routine within the socket, it just does not work. It's not stating an invoke is required either.Private Delegate Sub DelegateAddText(ByRef theText As String, ByRef AddReturn As Boolean, ByRef AddPrefix As Boolean) Public Sub AddText(ByRef theText As String, ByRef AddReturn As Boolean, ByRef AddPrefix As Boolean)
[Code]...
as a side note which would be more efficient ... Indexing sockets and passing indexes through routines, or spawning classes. I realize spawning may use more memory but is it faster than indexing?
I have a very simple StopWatch application in Silverlight. I have the following private properties in my MainPage class: _StopPressed (bool), _TimeStart, _Elapsed (string). I also have a "Start" and "Stop" button. The "Start" button calls a method called UpdateTime that constantly updates _ElapsedTime until _StopPressed is true. When I originally wrote it, UpdateTime would block the UI so I couldn't press the Stop button, so I updated my code to use System.Threading.ThreadPool.QueueUserWorkItem with my UpdateTime method so that it updates _Elapsed on a background thread. That works great at updating the value.However, if I try to set the .Text value of my TextBlock from within UpdateTime(), I get an UnauthorizedAccessException that has to do with one thread accessing the data in another thread.What do I need to do to avoid getting this exception and appropriately update the UI without blocking it?
View 1 RepliesI'm looking for an example in VB.NET of a continuously scrolling form. This would be similar to a continuous form in Access but with a major difference in that when you scroll it the whole thing moves up or down instead of the data jumping up or down to the next section. If you are not familiar with Acces, this would be a form that lists data down the form in sections, one per record, in other words, like a bunch of forms strung one after the other. When you scroll down, the record at the top gradually disappears and is replaced with a new one at the bottom.
This needs to be a form with controls, not a datagridview.Right now, I'm trying to find an example of this. I tried searching for one and couldn't find one. Does anyone know of an example of a continuoulsy scrolling multi-record form where the whole form moves in VB.NET?
I'm making a cricket project, and I'm trying to insert a bar graph that will update as I score the match, showing the total for each over. The code I have so far is below, at the moment I'm trying to draw the graph into a picture box, is this correct? Also, if the below code is ok, how do I call the sub?
Public Sub graph_paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles graph.Paint
Dim total(20), i As Integer
For i = 1 To 20
total(i) = over(i, 1) + over(i, 2) + over(i, 3) + over(i, 4) + over(i, 5) + over(i, 6)
[Code] .....
My graph code works but i'm afraid it may not be efficient. I'm drawing a graph on a form using GDI. Basically, i'm making the entire form one big graph. Is this the best approach to creating a graph:
Private Sub frmGraphPaper_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim g As Graphics = e.Graphics
[code].....
I'm having difficulty drawing a graph using a picturebox and the graphics type. For some reason my graph doesn't load, even if I put thec code at the end of the on load event. But it works fine of I assign it to a button.
View 2 RepliesHow hard would it be to graph a curve of a function in a VB form.
Attached is a graph from excel which is exactly what I need to do.
I have the function of some fluid properties and I'd like to choose a min and max temp then have the function graphed, with temp as the x and the fluid property as the y which would auto scale to fit the curve.
Actually now the program i have to return the properties at one temp is just a GUI front end to call a fortran program to return the properties so actually if I just use that it'd be graphing points and not directly from the function. I can always make it completely VB based if graphing from a function is easier than points. It'd be a slight pain to rewrite all the code for the functions though.
using vs2008 I am trying to create a line graph using vb in a windows form. I have dragged a chart onto the form, and via the properties window, through the series option have changed the type to the graph that I want, which is line. But all the time the data is displayed as a simple bar chart. How do I remedy this please to get the type of chart that I want.
View 1 RepliesI want to make a pie graph on my form. Can I do this? If so what do I need in the way of controls?
View 5 RepliesI need to read a text file with 100 data points across different parameters and use VB to select two variables to compare on a line graph.
1) How do I read a text file into a form?
2) How do I create a graph with the proper labels?
3) How do I choose the x and y axes when given several data sets to analyze?
does any one know if this is possible and if so , how? importing a excel graph and viewing it on a vb form? sample code would be very nice
View 1 RepliesGood day all,A Flash movie that plays fine when opened in a web browser is playing slowly and choppily in my VB 2005 WinForm application on the same machine.
View 7 RepliesHi, I'm just beginning to teach myself how to do OOP in VB 2008 Express. I have a quick question after seeing a video online.Is a VB variable the equivalent of an 'instance' in Flash and a VB object like a 'symbol' in Flash? Is this what it means by a variable being a reference or pointer to an object and not the object itself?
View 5 RepliesHow can i use zed graph web to graph a dataset or datatable, the only examples i have found use test data.
View 2 Replieswhy is it i need to click the shockwave flash player/flash/.swf before it will exectue.
here's my code for shockwave flash player
Handles AxShockwaveFlash1.Enter
AxShockwaveFlash1.Play()
AxShockwaveFlash1.Movie = "C:UserscompnameDesktopflash1.swf"
Me.AxShockwaveFlash1.BGColor = Me.BackColor.R.ToString("X2") & Me.BackColor.G.ToString("X2") & Me.BackColor.B.ToString("X2")
why is it i need to click the shockwave flash player/flash/.swf before it will execute.here's my code for shockwave flash player
Handles AxShockwaveFlash1.Enter
AxShockwaveFlash1.Play()
AxShockwaveFlash1.Movie = "C:UserscompnameDesktopflash1.swf"
Me.AxShockwaveFlash1.BGColor = Me.BackColor.R.ToString("X2") & Me.BackColor.G.ToString("X2") & Me.BackColor.B.ToString("X2")
I am thinking about create a flash form on vb.net. But I wonder that is it possible to disabled right mouse click for flash??
View 4 RepliesI don't have much information about having flash file running on the form and I want to know how to make the form show a swf file and that swf file is stored on a website not on my pc.
View 3 Repliesi want to know or it is possible to use flash (swf) files embeded in a form in vb i use vb 2008 express edition and windows vista ultimate if jes can somebody show me the code for something?
View 1 RepliesI have a shockwave on a form in my VB.NET application. Everything works great. Although, when a user right-clicks over the flash movie a flash context menu is displayed. How do I use the form contextmenu on flash??
View 2 RepliesWell I have a Flash Movie loaded in the Flash Control, And I need to reload it. (So the new base url is used) How do I do this?
View 1 RepliesI am thinking about create flash form and place them in my vb.net application. I wonder in what program that I can create and design the flash form?
View 9 RepliesI added the flash object from the tool- chose toolbox item' then I put the url of the file bit it doesn't play even I change the the play property true
View 1 RepliesI want to put a flash movie in my vb.net form as a form background. i want controls like buttons and labels on top of that flash movie.
View 1 Repliesim trying to build an app that will simply contain a webbrowser.i have started an WindowsForm project and added the "Webbrowser component" and it works fine when i build the app and test it.although if i try to go to a page containing a FLashmovie etc. there is simply an "White doc icon with an red cross in it" just like it cant display the picture. although it is an flash doc/movie.or in this particular case an audioplayer.I have tried other flash and still the same thing.
View 7 Repliesi have added the shockwave flash object into my tool box from COM COMPONENTS, but when i add the shockwave flash object to my form so it gives and error. the error is "Failed to import the Activex Control. ensure that it is properly registered"
View 1 RepliesI need to embed a contact.swf (flash) form for request licenses in my app?
View 1 Replies