Got a new one...
Private Sub Form3_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
e.SuppressKeyPress = True 'makes it quit dinging when press enter
[code].....
I'm using a Datagridview my task is when the key F5 press using Keydown event executing some code
View 1 RepliesI am wanting to create a simple text editor that will change certain strings of characters to specific colors in two instances when they are being typed or when a file is loaded. Do I need to use a richtext box to do this and what would I need to do to accomplish this.
View 1 RepliesI'd like you filter some results in a grid, and i want the user to be able to type a value into a textbox, and then the grid will be filtered by that value. I don't need help with the grid or how to populate it. My question is in regards to the textbox; How can i tell when the user has stopped typing so i can automatically load the grid? I thought about doing a refresh automatically in the TextChanged event, but that seems silly since the user could still be typing more characters.
View 5 RepliesI must be loosing my mind! I came back to working on a small project after not being able to work on it for some time and now the IDE layout is totally different. For instance, there used to be a toolbar that showed a run button, step into, step over and such but now its not there, and, for the life of me I can't find it! I went to reseting the layout options to default, VB and so forth but cannot find it. In addition, when I hit F5 nothing happens. I can't figure out how to run my project from the IDE. Have I lost my mind or what?
View 2 RepliesIn my application I read data (using data binding) from an Excel spreadsheet into a DataGridView. This works, but the data columns contain text fields (strings). I would like to set the data type for some columns to "Date" and Decimal. I cant do this on the DataGridView (error: cant change properties for data-bound stuff) and I cant figure out how to do it on the dataset or data-table that I bind to the DataGridView.The following is the code I use to read and bind the data:
Using con As OleDbConnection = New OleDbConnection(cs)
'
'open the OleDbConnection
[code]....
The commented out code (below the 'Todo: comment) causes a additional table, but I want to change the table with the data.
how to get a keydown even to work but in 2010 this seems to have changed
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
If e.Keycode = Keys.Enter Then
MsgBox("test")
End If
End Sub
Apparently "KeyCode" is not in use anymore..
from yesterday night i have done a part of my practical and i saved to my pendrive... the folder name as <Chapter 3>and today i went to college computer lab continue to finish another part and i also saved to my pendrive, since i open the .sln file from pendrive.and i go rename those folder names and .sln name and others possible to rename as <Practical 3>when i back home want continue to do, the folder is still exist but inside folder's files are lost.
View 3 RepliesI have set up a form that will act as my parent (this hasnt been set up as an MDI).On this form I have a Panel that I will be loading forms into. I have a form that contains a DGV. On the load of the parent form, I then load this "child" form into the Panel. In the onLoad event of the "child" I go off to the database and populate my DGV. Then I run through the rows in the DGV and add in a logo image in the first column and change some cell colors based on values in those cells.
This all works great, however, when the child form finishes loading all the changes are lost. eg The logo images go back to the red cross and the cell coloring is gone.If I call Me.Refresh() in the child window as the last line in its Form_load event I can see the logo and cell colors update to what I want, but as soon as it has updated, its like it immediately refreshes again and all the changes are gone.
I'm working on a project that contains hotkeys, but I don't wish to have global hotkeys. At the moment, I'm using KeyDown and e.KeyCode for hotkeys. I've created test projects where these worked perfectly fine, but on my main project, they don't register.
CODE:
I am using the keydown event so that when i press the right arrow the image changes but when i run it nothing happens when i press the arrow key.I have enabled the keypreview Properties?
Private Sub Level1_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If tmrWalk.Enabled = True Then
Else
If e.KeyCode = Windows.Forms.Keys.Right Then
[code]....
I need to capture when a user keydowns the ALT key and then by code, releasing the key.
I have sent keys before with the help of keybd_event but I need to know if there is another (easier) way of releasing a key by code...
I have an application similar to calculator, with button from 0 to 9, Enter and Clear. I made it possible to use the buttons by clicking on them and also by using numpad, like shown below: Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
Select Case e.KeyCode
[Code]...
Is it possible to set focus on the keydown event so after the button control, sets the focus into the keydown? although says often control can have focus,.Putting a button and a keydown event on a form...
View 2 RepliesThe form is a dialog, with KeyPreview = True and AcceptButton = (none)Handling Me.KeyDown, and Me.KeyPress do not trigger when I press either the Up, Down, or Enter buttons. Me.KeyUp will fire on up and down, but not enter.I put a breakpoint on the procedure declaration and the first line of the procedure (the Me.KeyPress and Me.KeyDown event handler procedures), and they never fire.
View 2 RepliesI try to add handle for each control in my panel (panel includes)in a few words I have a panel with other panels inside, the latter in turn contain other panel, here is a screen to learn more:
I try doing this, but it is not the result I want to achieve ... If you look at the picture you will easily understand my problem:vb
For Each ctrl As Control In Me.Controls' in this case Me is my Form1AddHandler ctrl.MouseHover, AddressOf ctrl_MouseOverAddHandler ctrl.MouseLeave, AddressOf ctrl_MouseLeaveNext
In a program I am making I have a custom user interface. I have dozens of different panels each containing various controls. When the form opens, a text file which contains the positions of each of these panels (and whether or not they are on the form) is loaded and the panels are placed appropriately
View 7 RepliesI've been fiddling with this for ages and can't get it right. If you have this in C#:
videoSource1.NewFrame +=new NewFrameEventHandler(videoSource1_NewFrame);
void videoSource1_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
// stuff to do in here
}
How would write it in VB? My head is spinning with AddHandler and AddressOf and I can't seem to get it right.
I have a 2 dimensional array of labels that are created at runtime and I do not know how many labels will be created before running the program. How do I make one handler to change the background color of the label clicked. I already have for each label when created:
[Code]...
I have a Timers.Timer called COMTimeout, to which I add an event handler using:
AddHandler COMTimeout.Elapsed, AddressOf TimeoutEvent
however, the handler may also be:
AddHandler COMTimeout.Elapsed, AddressOf SecondTimeoutEvent
I now need to remove the handler, is there a way to do it without knowing the name or do I need to keep track of which handler as been assigned?
I'm making a program that uses recursion to transform the nodes in a treeview to the items in a contextmenustrip. The nodes will have tags within them that when I add a handler to the menuitem, it will run through a script from the tag to tell the program what to do, the only problem is that I don't need a tag or an even handler for any of the menuitems that have dropdown items. How could I do this?
View 3 Repliesi made a .exe launcher, i was able to launch a program named minecraft using the process.start. But this certain program generates error usually, so what i tried to do was get the window title of the minecraft and categorize if its an error or the actual game.
This is what i did:
Code:
So this transfers the window title of the launched program to a textbox then the "if statement" compares it and if its the error, it kills the error and relaunch the program. This is already a working program but i want to make the launching faster, the problem is if i hasten the interval of timer 2, it sometimes kill the non, error program that successfully launched. If anyone can help me, Hide the error or remove it please do help me. Im not yet an expert on vb.net but i want to learn from the best.
I have to create controls for inputting info to create people objects in the program, because I don't know how many people they are going to input, I have a button that they can press to add more fields.
I need to add a doubleclick event for these dynamic controls (text boxes), how can I create an event for them if they haven't been created yet. Also, as far as I know you cant make a variable part of an object name while declaring it. I need to do something like
Dim dynamicText & (Append variable counter each time a box is made)As New TextBox
dynamicText &variable counter. Name = "TimeTextBox"
dynamicText.Text = "SdgsdG"
dynamicText.Location = New System.Drawing.Point(100, 100)
[code].....
Also is there a way to like copy and paste a group of controls via code instead of having to code each individual one like if I had to do a text box along with a combo box and a lable all at once, can I throw it into something so I only have to recreate the container?
I am playing around with Drag and Drop, and I am having an issue with AddHandler. I am creating labels and displaying them on a form. Before I add each label to the form, I add 2 event handlers (DragEnter and DragLeave). When I run the code, it hits the first event handler (DragEnter), but doesn't hit the second event handler (DragLeave). Either I have coded something wrong, or the second handler is not being added.
Here is my code (note this is just something Im playing around with for learning):
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[Code]....
I'm new to VB and trying to add a Key(Down? Press?) Handler to a dynamicly created textbox. The error I get is "'KeyDown' is not an event of 'Object'". How do I fix this?Here are the relevant parts of my
Public Class main
Structure square
Dim box As TextBox
Dim guessedVal As Integer
Dim correctVal As Integer
[Code]...
I'm using FileSystemWatcher in an application.it monitors the files in a folder, then do some processing. I monitor FileCreate, Change, Rename, Delete event.the problem is: when I copy some images to that folder, it fired the create event, but the file is not actually ready, so, when I load the file in the event handler, it failed.how can deal with this correctly?
View 2 RepliesI have many textbox controls and they are named as txt1.text, txt2.text, txt4.txt etc.I want to raise the event "Leave" when txt1.text leaves or txt2.text leaves.but with a single handler.
View 2 RepliesI'm working on a program with a fairly complex graphical interface. Due to the volume of information possible in the interface, the tooltip, or something like it, seems likely to be a fairly critical means of obtaining feedback. However, after a bit of testing, there are a few features that I am not really enamored with. First, I am changing the tooltip text dynamically based on the portion of a control that the mouse hovers over. This is done in the Hover event handler. What I am seeing is that once the hover event is raised once for a control, it appears not to be raised for that control again unless the mouse leaves the control and re-enters. Therefore, the tooltip is set based on where the mouse hovers the first time it hovers on the control, then doesn't change until the mouse has left the control.
More disturbingly, the tooltip sometimes doesn't show up at all. It appears that if I am quick enough about moving the mouse over the control, then hovering does nothing and no tooltip shows up at all. The way to get the tooltip to show up is to move the mouse smoothly, and somewhat slowly, over the control, then pause. As long as the motion is slow enough, the tooltip always shows up. However, if the mouse is then moved, the tooltip goes away, and won't return until the mouse has left the control and come back to it. So basically, First, I will look into showing something on MouseMove rather than Hover, as Hover appears to be inconsistent, at best. Yet that doesn't solve the problem that the tooltip is too inconsistent in behavior. Is there an alternative, or timing property settings for the tooltip that improves responsiveness?
I need to detect shift + arrow key in blank form. But it's not working. I also tried overriding IsInputKey method but it only detects single key press (like arrow key) but when multiple key are pressed it simply doesn't work.
View 5 RepliesWhen I double click on a form control while in the design view in a Web Application project within Visual Studio 2010, say a 'button' or a 'submit' for example, it inserts a javascript function into my .aspx file. When I do this at work it automatically creates an event handler for the control in the code-behind.How do I change this to that setting?I don't want to type those event handler subroutines every time!
View 1 Replies