Why Is Form Display Incomplete Until Code Stops
Aug 21, 2009
Form A accepts user input, closes and calls Form B when user wants to see results. Form B starts calculations automatically. Meanwhile, it partially displays and can disappear completely leaving an empty window. The calculations can take some time. It seems as if a form needs code to stop running and be awaiting user input before it finishes drawing itself. Is there a way to circumvent this? Aside from the aesthetics, I would like user to see progress reports posted to status bar and without needing to press another button (so removing automatic start). Form B has only a return button for input.
I have tried various places for Me.Show and addressing the form's controls from the modules it uses.
View 3 Replies
ADVERTISEMENT
Apr 8, 2011
I have a problem in timers, I want to display 2 forms each one after 3 and 5, how to do that? I mean when the first form appears, after 3 seconds another one will appear, then after 5 seconds the second will appear. I have a code where someone gave me here but its for message box only, thus I modify it to put a form still does not work. Here the code I put in the timer below:
Private Sub frmblabla_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
tmrnote.Start()
Private Sub tmrnote_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tmrnote.Tick[code]....
I still have problem when the message box stops, it displays all the forms together. All I want is when the message box stops, then it display the first form then stop to display the second then stop to display the last. The first form must stay for 3 seconds on the screen, then after 3 seconds the second appears then after 5 seconds the last appears.
View 2 Replies
Jan 30, 2012
[code]...
In the above code I am having issue debugging. The point of this is in the HTML I have three select tags.District, County, and City. If you select a District it should update County and City to limit only the Counties or Cities in that District. City works perfectly but County does not. I discovered that when running through this code above if it runs through the County Case segment it just stops filter = String.Format("maintdisnmbr in ({}0)", filterValue). If I step through step by step the code does not finish. If I don't go step by step and jump ahead it gives me an error saying the Input string is not formatted.
View 1 Replies
May 5, 2011
Once again I'm migrating to vb.net finally from vb6 and trying to get some of my old code to work. I was using the following code to let something finish running and then after the time set go to the next.
[code]...
Sleep just stops the code period but this actually runs the piece before it and then continues. I put it all into vb.net and it threw out an error with DoEvents.
View 13 Replies
Jan 15, 2012
Public Sub bk()
Try
Dim strDatabasePath As String =
[code].....
View 1 Replies
Jan 15, 2012
Public Sub bk()
Try
Dim strDatabasePath As String =
[code]....
View 1 Replies
May 5, 2011
In my form3 i have this code
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim vs As Integer
[code].....
View 1 Replies
Dec 14, 2009
I might be going about this all wrong, but i've been reading up on some stuff, and am venturing into stuff i've never dealt with before. example: when people do things like, dim xxx as new form1
then xxx.show...how do you design that xxx form? and get the objects placed where you want it? Design an object on form2. Say Panel, populate it the way I want it. Code it the way I want it.Then, say on form1, i push a button, and it will display the panel(on form2) on form1?
View 4 Replies
Feb 9, 2011
First of all i want to say i feel very rude as my current posts only consist of me asking questions and never posting to give answers. im still learning and do not want to give people diff advice and sending them down the wrong path.I am doing an assignment for my vb.net course and im having a problem with tabcontrol. I originally didnt do my code inside a tab control. Then i had to copy all the code and button etc over to the tab control then the code completely stopped working. I copied the code then deleted it and pasted it back into my project and it worked again. But it seems everytime i restart my laptop the code stops functioning and i need to copy delete then paste to get it working again!I need to hand this assignment in shortly and i dont want to if my code is working intermittantly..
View 5 Replies
Oct 23, 2009
I have a windows Forms app that displays data as it scans.Once you alt-tab or remove "focus" from the app and doing something else (open word) it stops updating. In otherwords it looks like the app has locked up.But it will finish the scanning as normal.But any updates from the scans being shown on the app window are not shown, that is until the app is finished and catches up.
[Code]...
View 8 Replies
Feb 16, 2011
I am in need of being able to show a user the contents of a Oracle stored procedure. I have no idea of how to go about actually getting and then displaying the code contained in a stored procedure. Does anyone know of a way? I know how to call and execute a stored procedure but is about it. I am developing using VB.NET 2010 with Oracle 10G as my back end.
View 3 Replies
Mar 12, 2011
I'm using the arrow keys to move an animated gif around a form. However when I add a button control to the form the animated gif no longer responds to the arrow keys.
#include "stdafx.h"
using namespace System;
using namespace System::Drawing;
[code].....
View 1 Replies
Sep 1, 2009
I have an add-in application running in Outlook that pops up a form to tell the user something is being processed.The add-in is written in vb. net.The information form has an animated gif on it which should animate as the rest of the program is processing however it stops animating.The code is as follows:[code]
View 5 Replies
Mar 26, 2009
I'm trying to connect and query a .dbf dBase table. I'm fairly certain I've got the connection string formatted properly, because I am no longer receiving errors that I can't locate the table.I've tried everything I can think of, and nothing seems to work to make a valid query. I've tried all sorts of syntax changes around the table name (which is just 'buildings'...nothing fancy). The error is a syntax error with an incomplete query on the executereader line.
[code]...
View 2 Replies
Apr 17, 2010
I've been working on a project for months now (vb 2008 express). There is one final which I can't solve.I need to send images to a client from a 'server'(listener). The code below works most of the time but sometimes the image is incomplete. I believe this might be something to do with the tcp packet sizes varying, maybe limited by how busy it is out there on the net. I have seen examples of code that splits the image into chunks and sends them out, but I can't get them to work maybe because I'm using a different vb version. The pictures to be sent are small 20k max.
Any working code examples would be wonderful. I have been experimenting and failing with this final hurdle for weeks.
[Code]...
View 1 Replies
Apr 17, 2012
I use the webbrowser control in my program but when after navigate to a site. I try to get some element on the using the document of the webbrowser (like getelementbyid ... ) I notice that some element are missing. I know that elements are dynamically inserted into the page by some javascript. I searched method to get those element and I try to get them injecting a javascript to be executed in the page and return some element by window.external method (or just to try by alert) but even if this script are executed they just return the same result as the method on the document in the original code. Is there a way to access to this 'invisible' element in my program in some way just like I access them by pressing F12 in Internet Explorer?
Here is my code:
private void button2_Click(object sender, EventArgs e) {
//injecting and executing my javascript code
HtmlElement head = webBrowser1.Document.GetElementsByTagName("head")[0];
HtmlElement scriptEl = webBrowser1.Document.CreateElement("script");
IHTMLScriptElement element = (IHTMLScriptElement)scriptEl.DomElement;
[Code] ....
At the end of the execution both test and test2 have the same html were some element are missing.
View 1 Replies
Jun 11, 2010
Reading tags from a Geo-TIFF file works great on XP and Vista, but does not work on my new Windows 7 box using the exact same code and image. Several of the critical tags are missing. Here is my sample code:
Dim b As New Bitmap("C:myMap.tif")
Dim list As String
For Each p As PropertyItem In b.PropertyItems
[code]....
On XP and Vista, this is the result:
256, 257, 258, 259, 262, 273, 274, 277, 278, 279, 282, 283, 284, 296, 305, 320, 339, 33550, 33922, 34735, 34736, 34737
On Win7, this is the result:
256, 257, 258, 259, 262, 273, 274, 277, 278, 279, 282, 283, 284, 296, 305, 320, 339, 34735, 34737
Why would it be different? I'm compiling as 32bit (crashes if I try 64 bit); running as admin, have tried running the exe with various compatability modes set...no difference.
View 1 Replies
Feb 8, 2011
Incomplete - Computer.Network.UploadFile?
View 5 Replies
Nov 19, 2009
I am working on an app that requires searching the source code for a printer's web page for some information. I have used several methods to retrieve the source code (WebClient.DownloadString, HttpWebRequest.GetResponse) and in all cases recover only a portion of the web page. I can use View Source on the webpage and it is a 14K file, but using the VB functions I only get 5K of it. In these cases the data stops just prior to a <div class="tabBox"> tag containing data specific to the printer. I have also added code to pause the app, thinking that maybe it needed time for the page to complete before returning the code. Any ideas what I need to do to get the whole page?
View 3 Replies
Dec 8, 2010
I have a class that implements IXMLSerializable. With this interface comes WriteXML, ReadXML and GetSchema. I've noticed that the ReadXML implementation crashes beyond repair (i.e hangs indefinitely) while deserializing when the XML Data is incomplete.[code]
View 5 Replies
Jun 25, 2010
I have a class that implements IXMLSerializable. With this interface comes WriteXML, ReadXML and GetSchema. I've noticed that the ReadXML implementation crashes beyond repair (i.e hangs indefinitely) while deserializing when the XML Data is incomplete. For example, given the following XML
<SomeObject>
<SomeValue>This is a string</SomeValue>
<AnotherValue>This is another string</AnotherValue>
</SomeObject>
View 1 Replies
Aug 9, 2011
I am trying to download a 163 KB jpg file from the web with Webclient. The dimensions of it are ~332 x 491 pixels.
[Code]...
View 2 Replies
Jun 24, 2010
To object oriented programming and programming with visual basic .net (vb 2008 express). regarding storing of information but not in a database. Someone mentioned using binary or xml serialization. So I researched that and after two long 8 hour days of messing around with binary serialization and about a dozen different code techniques i finally found one that seems to work. I created a module that serializes two variables and appends them into a file. The same module also has a sub that deserializes the information from the file and displays in a message box. If needed I'll provide the code later.
Really the problem I am having is that my message box only displays the first entry into the file and no other. So I can append any number of variables to the file but every time I call the subroutine in my module it only displays the first entry. How do you read all of the file? Also can I search the file for a particular value of a variable? The variables are codependent. The two variables are simply a date and a string representing a changing code that corresponds to that specific date. So I'd like to be able to say search for a date and retrieve both the date and the code.
However I don't have any idea how to do this. Also the messagebox.show method is probably not the best way to illustrate the information in the file but I'm still new and I'm not sure the best way to show all the info in the file. For instance if I wanted to show the entire contents or just the codes corresponding to certain dates. I know a database is probably the better answer but I've gotten this far without one, lol, I'm too stubborn to change now. Once I figure this out, I'll switch and try the same technique with a database.
View 5 Replies
Jul 11, 2011
I built a prototype system with some database queries. Since it was just a prototype and I was very new to databases, I just used a direct string. This is the string I used and it works fine:
command = New OleDbCommand("SELECT * FROM " + prefix + "CanonicForms WHERE Type=1 AND Canonic_Form='" + item + "'", dictionary_connection)
Now, in putting it in a real system, I wanted to use the more secure parametized method, so after some googling I came up with this:
command = New OleDbCommand("SELECT * FROM @prefix WHERE Type=1 AND Canonic_Form=@form", dictionary_connection)
command.Parameters.AddWithValue("@prefix", prefix + "CanonicForms")
command.Parameters.AddWithValue("@form", item)
But all I get is an error for an incomplete query clause. What have I done differently between the two?
View 3 Replies
Mar 24, 2009
I have a timer in vb.net and it's interval is 1000ms ,. i have placed in it's timer_tick event a code that will print screen the screen and save it to a database.The problem is when i click outside of the form, or loosing the focus of the mouse to the form containing that timer/printscreen, the timer stops. As a result the printscreen also stops.here are it's properties:
generate member = true
interval = 1000
modifiers = friend
View 1 Replies
Jan 17, 2011
My VB application is behaving strangley. I have form with fairly large number of controls. I am using case against radio buttons. after curtain number of buttons, it stops responding to more radio buttons.
Then I tried to split controls in to 2 form but now my form.showdialog() too now working properly. It takes new from names but show the old form when running.
View 7 Replies
Aug 2, 2010
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Form2.PictureBox1.Load(bm2)
[CODE]...
So I'm trying to take a screen capture of the windows form and display only a certain specified area of that screen capture in a picturebox on a different form. Kind of like this. First, take the screen capture of the form: Then get a specified area of that form through x,y coordinates or something and display it on a picturebox on a separate form.
View 1 Replies
Sep 27, 2010
Inside a form, I would like to display a pdf file which is already available in my resources (template file "untitled"). In this pdf file, I have some fields which get their values from some texboxes in another form. My aim is, when the user triggers the button to call this form, it should insert the values inside the pdf file and display the output pdf inside the form.I have written the code to an extend but could not finish it myself after my many trials... Now here are the two things I cannot manage:I can use a directory to read the template pdf "untitled1.pdf". But my aim is to use the file inside my resources. can save the output file in a directory but this is not I want to do. I want to display the output pdf.
View 1 Replies
Jan 19, 2011
How does Visual Studio and other similar programs display a form in their IDE? Is it possible to achieve the same or a similar effect using C# or VB.NET?
View 3 Replies
Mar 15, 2012
my application have a main form. i have set the isMDIcontainer to true on the form properties. How do i set other forms to child form of the parent. i need to do this because the other forms start position is CenterParent.but as it is now when i run the program the other forms start position is not the parent form centre.Secondly, how do i disable the parent form when a child form is on display. so that user cannot click on the parent form until the child form is closed.
View 1 Replies
