I have an InkPicture larger than can fit on screen and so am using Panel with AutoScroll. When I scroll down and start inking the picture it is fine. But if the InkPicture loses focus and I attempt to ink the picture again, the InkPicture position will change, it resets to original position. I have been stuck on this for some time now.
View 1 RepliesI'd like to create a Windows form that allows a tablet user to enter a signature. I'd then like to capture that signature as a bitmap on the clipboard.
I've got some code using the InkPicture ActiveX control in MS Word Xp (2002) and it works marginally - I think the control is hobbled because of security issues.
Is there a .Net control to capture mouse/pen strokes ala InkPicture? I see some old WinXP Tablet stuff out there but the capability should be part of Vista+ which is my target platform.
Should I just be looking for a simple drawing form example that can scribble a signature then get the image on the clipboard for paste into a Word doc as a signature (the ultimate goal?)
Using VS 2010 Pro SP1 - XP Pro SP3 I set a breakpoint with F9 and the line turns Red. When I press F5 to start debugging, the Red Breakpoint jumps to another line a few lines away.
View 8 RepliesI have a weird behavior with tabs on a VB.NET form.On a form I have several comboboxes, text boxes, and 2 buttons.I have made sure my tabindex are in the order I desire, meaning combobox1 has tabindex 1, combobox2 tabindex 2, button1 tabindex5,etc..Here is the behavior, when I first open the form, if I tab from combobox1 it jumps directly to the button, instead of combobox2, however once I help things with the mouse, it will tab in the appropriate order.
View 8 RepliesI'm using the OnTextChange event on a textbox on an ASP.NET page. To have this working I have to put 'AutoPostBack=true'.
The problem is that the textbox is on the bottom of the page, and when the text changes it has to fill another textbox. This is working fine but when the event triggers the page refreshes and jumps to the top of the page, so I always have to scroll down again to see it. (Due to the autopostback)
Is there anything I can do to prevent it to jump to the top of the page?
I'm wondering if anyone else has encountered this in visual studio 2008. I'm writing an asp.net app and when I run through debug it's jumping all over the place. It skips certain lines, at least it appears to, then it jumps to the bottom of the page and repeats the same line a few times then jumps to a separate sub I have in there. The weird thing, besides its behavior, is that it's not grabbing a piece of information that exists in one column but is grabbing another one. So anyone else encountered this? What's the fix.
To give a more detailed example it did this on the last debug. I started the breakpoint at line 40. It went to 43 with no problem then jumps to line 66, an end sub line, it then proceeds to go on to the private sub directly below it. That includes it going over the blank lines that would normally be skipped. It goes through the entire private sub line by line including a catch ex line but it displays no error. After hitting that line it immediately returns to line 46 of the sub that it already passed by the end sub line. It then goes down 2 more lines jumps back to the private sub it just left and repeats the end sub line 3 times, only the b at the end is highlighted when doing this not the whole line.
I'm successfully refreshing my DataGridView/Access DB by using the following.[cod]My only problem is after the refreshes the DGV rolls back to the first entry.Is there anyway to have it refresh but stay on the same line?
View 4 RepliesI have successfully ported a VB6 application to VB.NET (VS2008, .NET 2.0). Much optimization and rewriting has been done, but there is one possible BUG i cannot overcome. I have a standard HSCROLLBAR control used for accepting a numeric input. The control needs to be disabled during complex computational routines to prevent additional user input. I am setting the enabled property to false and reenabling the control at the end of the calculation cycle. The control is enabled and disabled a few times, because some code has been placed in the onpaint event of a drawing area, and separating the calculation part from the drawing part will be a huge task.
Large changes are handled correctly. Small changes aren't. The problem is that the control freezes in a unknown state after clicking on the arrows. A second click makes the control (and its parent control box) jump up and over everything else in their container.The scrollbar remains functional only via the contextual menu. This happens both in debug and release builds. There are no overrides. Coding/Test platform XP SP3 (more than 1 machine).
There is no code whatsoever that handles neither the parent control nor the scrollbar repositioning and resizing. The only code takes the value of the scrollbar and passes to the calculation section. If I omit disabling and reenabling the control, everything works fine.i tried rebuilding the control from scratch. forcing enabling the control after it has gone haywire does not make changes, disabling the groupbox instead of the single control doesn't make any difference, debugging step by step confirms that things go wrong when drawing the controls within the private system form classes.
I have an VB application that I developed in Visual Studio 2008. The back end is SQL. Application stores quite a bit of information and gets updated daily by users. It also connects to AD to get u/p, adds new accounts in AD and adds mailboxes. Users connect to it through Citrix. We noticed big spikes in memory usage. The executable itself is less than 5Mb; if I run it and it opens main form - memory usage jumps to about 19Mb, open a report - it jumps to 80 Mb. If I open the form that is linked to multiple tables - it jumps to 157 Mb. Once users start pulling new information in, update it and connect to AD or Exchange - it could jump to 250 Mb. Also noticed that if user with read only rights has application opened and idle - memory usage constantly changes with a pattern
like 17Mb - 19 Mb - 15 Mb - 17 Mb and so on. This user wasn't even using computer at the time. In general - what could cause such jumps in memory usage? What is the best way to prevent it? On the server we have Windows Server 2003 SE
I have looking for a tutorial or class that demonstrates more than a trivial example of saving a windows position on closing. The ones I have found don't seem to work on all systems because of:
1. Multiple monitors. (and resolution between those monitors)
2. Toolbar size and position (toolbar is only on the primary monitor, well sometimes)
3. Sometimes the programs dont open on the right monitor they were closed on.
Is there an extensive class or tutorial on all the stuff a programmer needs to get right to have a window size and position persisted between executions?
I am using the following code to populate data in Textbox1:
[Code]...
I have few functions assigned in TextBox1_TextChanged event. The problem i am facing is this event is fired twice, once after the Fill command and another after the Position command whereas i want the event to fire only once after the Position command. What should i do?
I've noticed that every time I start a new thread in my program, the memory usage jumps about 1000k and it never goes back down. I have ensured that the thread is no longer running, and only one instance of my worker thread is ever running at a time. I am using ThreadPool.QueueUserWorkItem and ASyncOperation to get stuff done. The program starts using a Sub Main in a module that uses STAThread; I read that using STAThread instead of MTAThread makes it impossible for the Garbage Collector to get in and consider objects for garbage collection. However, when I change the STAThread to an MTAThread, the WebBrowser control in my frmMain cannot be instantiated.
I get this exception:
Code: An unhandled exception of type 'System.Threading.ThreadStateException' occurred in System.Windows.Forms.dll
Additional information: ActiveX control '8856f961-340a-11d0-a96b-00c04fd705a2' cannot be instantiated because the current thread is not in a single-threaded apartment. I do threading with the WebBrowser control, so will using MTAThread fix my problem? If so, how should I partition my code so that the WebBrowser control won't be affected by the above exception? I call the thread repeatedly with a timer (although only one instance ever runs at a time), and my program's memory usage starts at about 5000k and can jump to 300,000k+ depending on many times the thread needs to be called.
I am trying to learn how to create relations I got a sample from a web site and it works great, but when I tried to make one; it is not working. Can some one tell me what I am doing wrong. It gets down to the last relation that I made called "ProdDet" and jumps out of the whole method. The error message says the following:
System.ArgumentException: These columns don't currently have unique values.
at System.Data.ConstraintCollection.AddUniqueConstraint(UniqueConstraint constraint)
at System.Data.ConstraintCollection.Add(Constraint constraint, Boolean addUniqueWhenAddingForeign)
at System.Data.ConstraintCollection.Add(Constraint constraint, Boolean addUniqueWhenAddingForeign)
[Code]...
I also have a function that returns ALL tiles on the map and they're X, Y position. How could I find out which one is closest to the position I specify? I can't figure out how to go about it. how to implement it with this. Heres a MADE UP example if what I'm trying to do:
Dim MyPosition as New Position()
MyPosition.X = 400
MyPosition.Y = 400
Dim tList as New List(Of Tile) = MyMap.GetTiles
Now, I can already do the stuff above, but what I need to make is something like this:
tList.GetTileClosestToPosition(MyPosition)
I have two forms: Main and Options.Main can be moved around the screen (like a normal window).When the user clicks a button, the Options form opens up and the Main form HIDES.How do I set the Options form to open in the exact place that the Main form was last on the screen (to give it the effect the MAIN form never went into hidding)I was thinking to set Option form's StartPosition to Main's current position, but I don't know the syntax for that or if it's even something you can do.
View 4 Replies[Code]...
Is it possible to give like this m_qty = ds_uqc.Tables(0).Rows(0)(4)?
I'm Pilipino and im new here . and this is my first time making a program . I used VS2008 my database is access 2007 .. I'm making a program for our hospital.. Im using Listview as my data table. when i delete a row or information . The error is There is no row at position 0 .
View 3 Repliesi have a datagridview. On right click it shows a contextmenu but it is always in the right upper corner. I want it so that the menu appears on the cell where user right clicks. It could be Cell 1 or two or whatever.
View 1 RepliesI have a datagrid named as dtagrdScaleoffinance with 5 rows. Now I want to display the current row in my textbox controls on my MouseUp event.
Here is my sample code
Private Sub dtagrdScaleoffinance_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles dtagrdScaleoffinance.MouseUp
Dim rc As Integer
rc = dtagrdScaleoffinance.CurrentRow.Index
getemp(rc)
[Code] .....
Okay so i have created my search form and everything works perfectly when you type into the text box the list box is filtered when you selected a name from filtered list box the customer details are shown and when you select a booking id number for that customers bookings you get the booking information however when i try to close to form i get an error no row in position -1 Since the close button on the form takes you back to the main menu this is an issue but i cant see why its doing this or how to fix it.
[Code]...
i am trying to populate all the emails in my distribution-list where comms = 'to', when my code reaches this part it gives me the error: There is no row at position 2 since i have 2 emails with comms = 'to' [Code] that i could see is that the for loops twice and strEmails shows the 2 emails but it does no stops there it try a third loop ans it stops at row = oTable.Rows(i) then it gives the error.
View 2 RepliesI have a combobox that is triggering the population of some checkboxes depending on the user mode. For some reason, when I put a MsgBox() at the beginning of the function, it works fine. But without that MsgBox(), I get the error that there is no row at position 0. MsgBox("value changed") '<---- this is the box that clears the error
CODE:
How can I get the Y position of the ContextMenuStrip?
View 1 RepliesI have a string like this: mstring = "0123456789ABCDEF"
how can I get the vale at a given position, such as 12?
I know with PHP I can do this:
val = mstring{12}
and it will give me the twelfth value in the string, which would be "C"
I am getting the error there is no row at position 6 but there is data at position 6. May I know if there is any better way apart from this that will "see" the correct number of rows in the database and display out the correct rows in the database? So lets say you have one row auto - increment and one column containing the data. Currently now if i delete off the row no 6 and add back the row, the dataset cannot see this row anymore thus giving me the error, there is no row at position 6.
If i take off the auto - increment row and test this method out, i get the same error.
[Code]...
how i can find the position of a letter(let's say in a textbox of 50 letters) so then when its position is found i can change that letter by the position?
View 6 RepliesPrivate Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Clear()
TextBox2.Clear()
End Sub
How do I make the cursor appear in textbox1 after clicking the button?
Given a set of X,Y,Z data points, how would I interpolate a Z value for a known X,Y position? Are there any methods built into .NET to accomplish this. What algorithm could I use?
For example, say I have a graph of X, Y, Z data, and I know the cursor's position. I can find the four closest real data points. I would like to interpolate the z value for the X,Y position of the cursor.
Here is a dummy data set.
(x,y,z)
(-4, -2, 700.065);
(-4, 0, 932.907);
[Code].....
If the cursor was at (.3,.5), could I use the four closest real data points (0,0), (0,2), (2,0), and (2,2) to find the interpolated z value?
I am trying to save my scale configurations in the database so first I have to check if it exists in the database.and I am using the code below to do that . however when there is no data in the database I will get an error "No row at position 0" or when the scale number is not there i will get the same error.
View 8 RepliesI rotate an image, execute a drawstring, rotate it back, execute another drawstringbut when I execute the second drawstring it is further to the right than the original.This is the basic code that I am using.
Call label_inches(PROP8, True, JUST_LEFT, Pen1, _
(TBL_TOP * (517 / 219)), (GRPH_LEFT * (2038 / 875)), GRPH_LEFT, TBL_LIN_DATE_Y, _
"Ending", False, vbBlack)
[code].....