I am new to dotnet. I have an application with one login screen and three other screens.On login user can go to any of the other three screens by selecting the options.On all three screens i have a Picture box which i need to update the Image every one minute based on some logic.
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I've got a Panel on a main Form containing a PictureBox control on Top of a TableLayout control. Both the child controls have their docking properties set to Top. The Picture control has sizemode set to Zoom.
What I'm finding is that the picture doesn't size properly when I start the app. There is a border at the top and bottom in the PictureBox control. It's only when I resize the overall form that it's correct.
So at the moment I've got this ugly bit of startup code, just to fix the problem Me.WindowState = FormWindowState.Normal Me.WindowState = FormWindowState.Maximized
What am I missing?
i am receiving data from serial port and i update a richtextbox in a MDI Form with the control.invoke method
(Code in SerialPort.DataReceived Event)
If myTerminal.Visible Then
myTerminal.MyRichTextBox1.Invoke(New MethodInvoker(Sub()
myTerminal.MyRichTextBox1.AppendText(dataLine & vbCrLf)
End Sub))
End If
But as a mdi form it has the ability to close and reopen. So when the serialport is sending data to richtextbox and the user click the close button and the form gets disposed. Then the error "Invoke or BeginInvoke cannot be called on a control until the window handle has been created."...
I am having trouble in browse & then save an image to SQL Server.ALso I want to retrieve that image.This is the code to browse image & show it in PictureBox1 Control
Public Sub SelectImage()
With OpenFileDialog1
'.InitialDirectory = "C:"
[code]....
But don't know how to pass it to image parameter .Also is there any way that I can save image on Local drive & just save the url /location/name in database?
I made a windows form which contains a listbox (named VenueList). The listbox is pulling it's values from a list provided by a binding source VenuesBindingSource which is pulling in a ID for the value and a name for the text. There is a button which is causing a DialogBox to appear which is asking for values to store in the database for a NEW venue. Once the values are filled and insert the database, what's supposed to happen is that the dialog box closes and goes back to the original form which invoked it.
However, instead of updating the list. The list stays the same. But if you close the form and reopen it, you see that a new value was added.
TournamentSettings.VenuesTableAdapter.InsertVenueQuery(Trim(VenueNameTxt.Text), Trim(VenueAddress1Txt.Text), Trim(VenueAddress2Txt.Text), Trim(VenueCityTxt.Text), Trim(VenueProvinceTxt.Text), Trim(VenueZipTxt.Text), Trim(CountryBox.SelectedValue), Trim(VenuePhoneNo.Text), VenueType.SelectedText, VenueWebAddress)
TournamentSettings.VenuesTableAdapter.Fill(TournamentSettings.VenueNameList.Venues)
In the above code, InsertVenueQuery is the name of a query from the designer which is invoked to add the values onto the tableadapter VenuesTableAdapter which is used to fill the combo box on load. I also sent the Fill command to refill the table with the new value. So the question is, should I go about doing this another way, rather than feeding the Table adapter and sending a fill command on to the datatable? Or is there something that I'm not doing here which I should to force that value into the list. I'm tempted to redo everything outside of the designer but that's a lot of code since I have to essentially run two commands (one to insert the data, and another to get the @@IDENTITY value since this is run on an access database.)
How can I duplicate the Outlook Calendar control that allwos you to see appointments on 15 minute intervals? It scrolls up and down and has mixed ssize fonts on it. I could duplicate the fonts but how do I get it to scroll? There are only a few controls that will scroll or allow you to scroll them.I am trying to create a scrolling schedule with a preselected time increment. (15 minutes intervals)
View 8 Replieshow to add a new form to my application programmatically & then add a picture box, text box, and a button to that new form?
I can add a new button, a new form, or a new picturebox on my current form but I can't seem to figure out how to add a new form to my application and then put the picturebox and textbox and the button on that new form.
'Form2
Dim form2 As New Form
form2.Size = New System.Drawing.Size(500, 500)
form2.Show()
[Code]....
I need to save a form in it user browse image & set it to a PictureBox But on another button I need save that image to SQL Server .I have a stored procedure with Insert Command (with Image Datatype)
Browser Image from Desktop, PictureBox Code :-
Public Sub SelectImage()
With OpenFileDialog1
[Code]...
But When I run the form it gives me error "No mapping exists from object type System.Drawing.Bitmap to a known managed provider native type."
I'm filling 16 pictureboxes in a Windows form with the following code:
Private
ub procHaalFotoOpOdbc(ByVal idnummer As Integer, ByVal vakje As PictureBox)
Dim ImageLength As Long
[code].....
I would lik a timer of 1 minute in one of my forms, and when that timer reaches zero, it would automaticly resume to the next form
View 10 RepliesI am trying to drag an item from treeview node and number of movable picturebox should be created on windows form as we drag.But in my programme, we can drag a parent node also, and only one picturebox is created.
Public Class Form1
Dim pic As New PictureBox
Public drag As Boolean = False
[code].....
It is possible to create windows service using windows form control in vb.net. give me the url or links. The windows forms control such as, Timer control, list-box, notify-icon control etc.
View 1 RepliesI am sorry to keep bothering you about this damn DataGridView control ... As you might have noticed I am having a hard time with the DataGridView control ... My latest problem has to do with updating the data base file (Access) through a DataGridView control .
Up to now I have managed to successfully edit an entry in the DataGridView control and moreover to successfully update the data base file itself .
The above form and its code work fine . The problem starts when I am trying to run the code of the Update button from another form .
You see , I have another form , through which I change the contents of some of the cells in the DataGridView control (back in Form1) . What I want next is to simply update the data base file itself , just like I was doing with the button in the first form , after I manually changed the cell in the DataGridView control .Thus , on the second form I have a button with this code :
Form1.Button1_Click(Nothing, Nothing) (of course the Click event is declared public)I have also tried :
Form1.Button1.PerformClick()
but still nothing ...Although Form2 successfully changes the cells back in Form1 , the data base file itself does not get updated ...If I manually press the Update button in Form1 I once again successfully update the data base file , but I want to do the whole thing by calling the Update button from Form2 .
I have a basic Windows form with one Crystal Reports form veiwer control on it. When ran on the development machine it displays the report fine.After build and publish the application is now installed on a user PC. I am getting an error that the Crystal Decisions. Windows. Form version 12.0.2000.0 can not be found. All the Crystal dll's are in the install directory but none of them are being installed in the install machines GAC.Am I setting my publish output up wrong, may references wrong, or is the local GAC files the problem. The message is so criptic, it doesnt really point me in the right direction.
View 1 RepliesI know when I draw to the form and add controls I get a flicker effect.If I draw to a picturebox on the form and add controls will the picturebox flicker?
View 4 RepliesI am trying to make a for loop in which a picturebox is suppose to go up and then down. The problem I am having is that the picturebox is not animated; i.e, it does not update the image rather the image stays the same as from the start.
I am using timers to animate the picturebox and I have done something similar to:
For count = 1 to 8Select Case countCase 1tmrJump1.Enabled = TrueCase 2tmrJump2.Enabled = TrueAnd so forthEnd SelectNext
I wanted to know how I would go about coding a website form controller in vb.net?I want to be able to connect to a website then enter a username and password by only entering the username and password and then pressing a login button on the windows form. How would I go about doing this?how to control website forms using windows forms.
View 3 RepliesI need to plot some analog values read from the serial port.I plot them in a picturebox starting from left. When I reach the end of the control at the right side I shift all values to the left of a point and I plot the new point at the right, (I have some flickering but it could be acceptable). This is my plotting control.My problem is that I have to clear the control (picturebox) in order to plot the shifted graph, but the method Clear of the Graphics class clears everything inside the picturebox, even my grid.How can i make always visible a grid "in" my picturebox?
1.a transparent image with a grid over the PB? (the clear method cannot remove it)
2.an image with a grid below the picturebox that must be with a transparent background to make visible the grid?
3.multiple layers on the same picturebox?
I have been searchingall day to find out it, but did not find the best way, all but I found one forvb. That framework can not beused on 4, but can be used in the framework 3.5 and below.
View 4 RepliesI'm trying to create a windows user control project that has a textbox placed on it.I want the textbox to fill the user control window.I've built the control and added it to another project, but it isn't behaving the way I want it too.When I drag and drop the control from the toolbox onto a windows form and try to resize it, because the textbox.multiline property has been set to True, the Textbox resizes horizontaly and not vertically (just like normal textboxes do) however the underlying user control window resizes which is undisireable. How can I get the user control window to stop doing this.
View 2 RepliesSuppose I have a label control on a windows form called "UserName". How can I refer to that label programmatically using the label name? For example I can do:
For each ctrl as Control in TabPage.Controls
If ctrl.Name = "UserName" Then
' Do something
End If
Next
This seems quite inefficient. I would like to do something like: TabPage.Controls("UserName").Text = "Something" I did some googling but couldn't find a satisfactory answer. Most suggested looping, some said .NET 2005 doesn't support direct refenece using string name, and FindControl method was asp.net only...
[Code]....
i have a screen capture running just as a picturebox on a winform updating with a timer... i have it so it shows my race in a game.... now all is running gr8 on my pc... im now looking to make it viewable to someone else thats connected to my chat server i have made a picturebox on the client form and have the capture code in my server im hosting on my pc...
so my question is how and what is the best/quickest way to do so? maybe memorystream? if so how do i go about that? how do i send a image over memory stream? or is there a better way?
I am trying to add a windows media player control to my form. However I do not see the control in the toolbox. Is there a way to add it?
View 3 RepliesI created a custom user control named "XYZ" and It is avaialble at the toolbox menu in the design mode and I can drag and drop it to a vb.net Windows form. What I really want is to dynamically to add this user control to the Windows form during the Windows form load event. Actually I want to add this user control to a "split container" named "sc_1" on the tab page named "tp_1" on a tab control named "tc_1" on a Windows form. What is teh vb code to add a user control to a Windows form. I am using vs 2005 and dotnetwork v2.0.
View 3 RepliesCan 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 have a VB windows application and I need a way to control input output from this windows application to a batch file.The batch script is quite complex so converting to a VB console application is out of the question because it will too much time.An simplified example is this:I have this batch file test.bat(just for example)
@echo off
set /p choice=name : %choice%
echo Hello %choice%!
In this batch file the user input the name which is then stored in a variable and after the user press enter on the screen will appear Hello + user input.
1. Is it possible to enter the name in a textbox from the windows form and by pushing a send button pass the name to the batch application and then the batch file to continue the operation of displaying the Hello message?
2. After the batch file finishes the operations it will open another console windows (3) with status of the various operations that take place on the system(in my case connected users to a server)Is it possible to hide this child console windows that are generated after my main .bat application finished the operations of opening connections?Can this be done from the windows application or I need to modify the .bat script?
3. Is there a way to collect the console windows output in a textbox from the windows application?One idea that came to me was to redirect the console output to a textfile and then read the textfile in the VB application but I want to know if there is another way.
4. Is it possible to hide this batch file inside the windows application exe?
I have a VB windows application and I need a way to control input output from this windows application to a batch file.
The batch script is quite complex so converting to a VB console application is out of the question because it will too much time.[code]...
1. Is it possible to enter the name in a textbox from the windows form and by pushing a send button pass the name to the batch application and then the batch file to continue the operation of displaying the Hello message?
2. After the batch file finishes the operations it will open another console windows (3) with status of the various operations that take place on the system(in my case connected users to a server)
Is it possible to hide this child console windows that are generated after my main .bat application finished the operations of opening connections?
Can this be done from the windows application or I need to modify the .bat script?
3. Is there a way to collect the console windows output in a textbox from the windows application?
how to create an use control?this link http:[url]....
View 4 RepliesI have a spreadsheet control on a windows form that I would like to populate with data from an existing worksheet (myworkbook.xls, sheet1). The best solution for me would to be to actually open the workbook on my form (not sure that is possible?), the next best solution would be to fill the spreadsheet control.
View 1 RepliesI have a customer which as a Visual Basic Project in single instance mode with a wired presentation logic.
The main form contains a TabControl with mutliple TabPages.If I click on TabPageA another form is shown in front of the Form and resized to have the same size as the TabPage.
If I click on TabPageB the first form is hidden and another form is displayed.So basically for the user it looks like you have a TabControl with different TabPages which is not the case.
I tried converting the Forms to UserControls and put them inside the TabPage, but, thanks to the SingleInstance app, this would take a whole lot of refactoring. I tried it but eventually gave up because of many many runtime errors and I don't want to put any more effort in this.
