I use vb.net 2008 to create a desktop application.I have a form that is resized according to the size/location of the app bar (where the start button is)I have a toolbar at the top, a status bar at the bottom of the form and a grid in the middle of the form I want the size of the grid to be the maximum possible on my form.if and when the user resize his application bar (or move it from the bottom to one of the sides) my form size should change according to the new working area size:
H = My.Computer.Screen.WorkingArea.Height
W = My.Computer.Screen.WorkingArea.Width
is there a single event that I can use ? currently I called my resize function in several form events: Activated, ClientSizeChanged, Load,Paint,LocationChanged,RegionChanged.And still it is not working correctly! Resize the app bar size or move it form does not change !
If I minimize it and then display it again or click it - it changes size
I need for a user to be able to resize a panel using at least one corner at runtime. I did this by making a panel and placing a small picturebox in the bottom left corner. I'm only testing it, so I just gave both the picturebox and panel black borders so I could test my code. Here's what I came up with:
May i ask you based on your codes last time to create a button, is this how i modify to delete off the button after i clicked on it? So that means to say i click on this button at location 15,41 then only this button will be deleted. the below is my code to delete the button but it is not consistent as sometimes it can delete more than one button when i click on one button.
Dim dr As DialogResult = MessageBox.Show("Are you sure?", "Check", MessageBoxButtons.YesNo) If dr = Windows.Forms.DialogResult.Yes Then PictureBox1.Controls.Remove(BTN)
I am loading a considerable amount of data from SQL into Excel. For specific reasons, I need to use the Resize method with an array when loading data to Excel.I have found a condition where the size of a cell/row causes the Resize method to crash. I have not found any doco anywhere that shows a Resize limit. My array is OK. My code is OK. But, the data for one row is very large - one field that I am trying to load to a cell has 1097 characters. I have breakpointed the code to assure that this one is the culprit.[code]Does anyone know of any size limits when using Resize. The total number of bytes being written to the row is 1402.Anyone know limits on length for Resize or "overrides" to handle this?
Now as you can see it is sending the textbox1 text and then pressing enter then sending textbox2 text! Theres quite a few problems in that but before i discuss note: This code is in a Timer. Problem #1: It does not send the keys fully correct all the time because its trying to send them all at once! So i want it to send them 1 letter after the other with 200 ms sleep in them! Problem #2: The sleep is not working: The reason i know is because even after it did the first textbox1 text it didnt wait that 2000 ms!
I created so many listviews in my project, that im too lazy to add to each listview a resize event with percentages. Is there any other trick, who just scales the columns so as they are?
I'm starting work updating an UI for one of my company's applications and I'm running into a sticky issue. The parent control contains several panels, each of which can be turned on or off depending on user input.
The final panel in the user control contains another user control which gets resizes according to a toggle switch. Essentially, it "opens" up more information.
While the child control (ChildControl) is docked to Fill inside the parent control (ParentControl), when I add height to ChildControl I can't get ParentControl's height to get updated as well. Currently I'm handling the ChildControl.Layout event in ParentControl but I can't seem to reach that code. To resize ChildControl, I'm calling Me.Height += 200 in ChildControl.vb.
Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
i'm working on a system that upgrades a basic version to a proversion but i have a payment gateway . it generates a code in an SQL DB.now i have a form in VB that has a textbox and a button how can i let VB connect to my SQL DB receive the code and then check if that code is correct and if its correct download silence the pro file. from an url.
I have created a basic query generator which allows a user to select the Select, WHERE and criteria attributes using a number of checkboxes.However i have got stuck. In the results form i have the following code
The program keeps on crashing if the user does not select the corresponding amount of display records from above for the amount of attributes they want for the SELECT part of the query in the intreface in form 1.
How would i go about making something where the number of SELECT attributes selected which are listed in a string create the correct number of textbox fields in the results form (form2)
I have a large problem with inheritance in vb.net. The problem is the following:
I have 2 forms => frmBase and frmChild
In frmBase i want to create a method Called StartWorking() and i want frmChild to inherit this method.
But here is the tricky thing: when frmChild.StartWorking is called i would like the following => without calling MyBase.StartWorking()
I want frmBase.StartWorking() to be executed first and after a test in frmBase.StartWorking if blnValue is true then frmChild.StartWorking has to be activated. if blnValue is false that frmChild.StartWorking cannot be activated.
I have nine pictures that I need to animate -I need to use the ToString method and a counter to concatenate a file name into a string variable from the Image.FromFile method. Once the counter reaches its maximum value, and the last picture is displayed, the counter should be reset to zero or one depending on how the first image file has been name. Also a static counter variable should be incremented in the time routine. what I have so far -- I know what I have to do; however, I just do not know how to code this properly.. Right now I have this going thru a button procedure but it needs to go through a timer.
When I am loading an Assembly dynamically, then calling a method from it, I appear to be getting the method from Assembly executing before the code in the method that is calling it.It does not appear to be executing in a Serial manner as I would expect. Can anyone shine some light on why this might be happening. Below is some code to illustrate what I am seeing, the code from the some.dll assembly calls a method named PerformLookup. For testing I put a similar MessageBox type output with "PerformLookup Time: " as the text. What I end up seeing is:
First: "PerformLookup Time: 40:842" Second: "initIndex Time: 45:873" Imports System
Why does my the declaration of my string in the code result in the following error? Is there a workaround?
Code:
<script runat="server"> Protected Sub form1_Load(sender As Object, e As System.EventArgs) Dim x As String = "</script>"
[code]....
Error: Statement cannot appear within a method body. End of method assumed.
Note: The following page did not fix my issue and instead resulted in the string </script> being output in my page. ( VB.NET hates </script> tag in string literal )
I am not sure whether this is a trick question?One of the object i have has 2 boolean properties, Standing and Sitting.I have a class called student with the 2 methods stated below- Am I coorrect is assuming that the first method draw() is affected by the standing property AND not the second method?Also the way it affects is that it draws an image when the the stugent is standing?
Let's say I have a page Test.aspx along with test.aspx.vb.Test.aspx.vb contains a class name "TestClass". In that class I have method1(), method2() and method3()I need to be able to call one of those methods, but I can't hard code it, the method to be executed comes from a string.
I can't do Select Case StringContainingTheNameOfTheDesiredMethod Case "Method1"
Extension methods are useful for types that you don't own and can't/don't want to derive from and extend (e.g. reference types and interfaces). Obviously, interfaces should be kept as short and to-the-point as possible, so extension methods for interfaces are particularly useful (e.g. LINQ).For classes, especially classes that you own, they're still useful - but I'm wondering how you determine what should be an extension method or what should be a method in the class itself.Personally, every time I think about it, I keep going round in circles with the following thoughts:If it's useful enough, it should be in the class.It's not part of the core responsibility of the class, it should be an extension method - but if it's useful enough, surely it should be the responsibility of the class...
I have a Application that Crypts all Files in a Directory and the Subdirectories
Public Shared Sub CryptAllFiles(ByVal crypt As Object) 'check if this dir exists Dim vDirInfo As New DirectoryInfo(vPath) If Not vDirInfo.Exists Then Exit Sub 'get all files' sizes in current path
Is there a way to choose between different methods and pass one into another method ?
Sub conditionnal_binding(ByVal list_box_reference As ListBox, ByVal list_box_final As ListBox, _ ByVal dico_source As Dictionary(Of String, List(Of String)), _ ByVal my_methode As ??? ) ' DO SOMETHING End Sub
I wrote ??? because I don't know how to call another method inside a method. I would like to choose between different "sub-methods". Here is how I would like to use my method :
I'm trying to code an application that selects an appropriate delivery method from a list box. The user should be able to enter a part number consisting of numbers and either one or two letters. "MS" representing "Mail-Standard, "MP" for "MailPriority", "FS" for "FedEx-Standard", "FO" for "FedEx "Overnight" and "U" represents "UPS" I want to code it so that it does the above and displays an appropriate message when the part number contains an invalid letter or letters.
Option Explicit On Option Strict On Public Class MainForm
