So basically, i have successfully randomized certain pictureboxes in a grid to containmines, and show that mine, and for testing purposes, those mines are currently showing. What do you think I need to do to be able to say:
View 1 RepliesI have successfully randomized certain pictureboxes in a grid to contain mines, and show that mine, and for testing purposes, those mines are currently showing. What do you think I need to do to be able to say[code]...
View 3 RepliesI am dynamically creating 12 picture boxes then click next and dynamically create the next 12 (in place of the first 12)
From what I can tell it is creating the next 12 I just can't see them. Do I first have to dispose of the original 12 first? if so how do I go about disposing of them?
Private Sub Pictures(ByVal DataXml As IEnumerable(Of XElement))
Dim song = DataXml
MsgBox("song index " & SongIndex)
[Code].....
The code below is a very simplified version of what I'm trying to write in VB2010.BuildPictureBoxes() builds a column of 40 PictureBoxes at the left of Form1,while LoadPictureBoxes() fills the boxes with a set of green bars.if there are no other controls on Form1, the code does what I expect (builds and fills boxes). On the other hand, if I add, say, a TextBox at design time, then it throws an exception:[code]I understand what the exception means, but not the reason for it. Apparently, the way that I've set up the For loop in LoadPictures doesn't differentiate between a TextBox and a PictureBox. I don't understand why, nor do I understand how to code the loop.I've searched forums and tried any number of ways to write the loop, but nothing that I've tried is free of errors. Clearly, I'm overlooking something simple. I'm not asking for code, because I don't learn anything that way. [code]
View 2 Repliesim doing a project in which im basically trying to make an etch-a-sketch style program.
I am using a 5x5 pixel picture box as the 'cursor' and have made the program so that i can move the picture box with the arrow keys. I am currently trying to work out how to make a trail of identical picture boxes (from an array of picture boxes) appear wherever the cursor has been using this code
Case Keys.Left
CurrentLoc = New Point(PictureBox1.Location.X, PictureBox1.Location.Y)
If Not PictureBox1.Location.X - 5 < 0 Then
[Code]....
Basically, im trying to make a trail by moving the original picturebox and the inserting an identical picturebox in the original's previous position. However, the new identical ones do not display
Having created my picture boxes at runtime, I am able to drag and drop them, but I have a few technical problems. After a few days of 'playing' seem to be going around in circles.There are three main problems:-
1. The last picturebox created is the only one I can drag.
I tried using "CType(sender,PicBox)" but never got it to work successfully.
2. The picturebox moves to the mouse cursor whenever I click it.
3. There seems to be an offset from where the cursor actually is, to where the picturebox actually moves.
Heres what I have so far.
Private Sub BtnRepeatCubDes_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnRepeatCubDes.Click
Try
intPicBoxCount += 1
ReDim PicBoxes(100)
[code]....
I trying to add to picturebox to a panel, the idea is to add an unknown aamount of pctureboxes to a scrollable panel. For now im just trying to add 1.
Dim PB As New PictureBox
With PB
.Name = "MyPic"
[Code]....
im making an array of pictureboxes at runtime:
Dim picEnemy(9) As PictureBox
Dim enemysprite As Image
enemysprite = Image.FromFile("....gif")
[Code]....
i get the error:Object reference not set to an instance of an object.
now i know the error would be solved if i had:
dim picEnemy as New Picturebox, but i cant since its an array
I have code my pictureboxes so that I can move them around my form, however i can move a picturebox under another picturebox. Basically What i would like to be able to do it for a picturebox not to be able to go underneath another picturebox and thus dissapear.For example my picturebox 1 when i move it can go under my picturebox2, I would like it to touch the edges of picturebox2 at most but not go underneath it. I am using visual basic 2008.
View 4 RepliesRecently I have been wanting to learn a bit more about Visual Basic and I've decided that I want to test my abilities by Making a Card game. The card game uses a customized deck of around 140 card. The Cards are all buildings which you need to place down by discarding a specific amount of cards in yoiur hand. The Objective of the game is to get 12 buildings built and get the most points. Many cards will be layed down at some point in the game.The way I think I will be creating the game is by Creating a Class for the Deck which will use a class for the Card. I would like the Card Class to somehow create a picture box of the cards image on the form which will hold all the other cards being displayed.
View 3 RepliesI have taken over support for a VB.Net WinForms application. When this application is installed via a ClickOnce installation it generates a shortcut on the desktop. The annoying thing, though, is that if you do a right click and properties on the shortcut that was created, it is clear that it is not a regular shortcut as it does not have a target tab, so it is not obvious from the shortcut properties what this shortcut is referencing. So my questions relating to this are: what is the idea behind this kind of shortcut? Why is the the target for this type of shortcut hidden? (What are they even called? This is the first time I have ever seen a ClickOnce installation, so was somewhat surprised when I found that the properties tab was missing.) How do you find out what executable is being referenced by the shortcut?
View 1 RepliesI wonder how you can make a picturebox selectable at runtime and also change the size and location during runtime?
Well I know how i can change the location of a picture box during runtime but that is only with a picturebox that is already defined in the form before runtime.
So I write an event for that particular Picturebox.
But now i want to do the same thing with a picturebox that a user can add during runtime and then the user should be able to select and move the picturebox.
So now i can't add code to the picturebox event so I wonder how you should do this. ( Maybe with reflection?)
And what if the user added 10 picture boxes and selects a certain picturebox. How do you make it possible that the picturebox the user clicks on is selected?
Should you store each picture box location on the Panel and then when the user clicks on a certain pixel in the panel where a certain picture box is it get's selected?
i have created dynamic buttons at runtime and i would like to disable them when a user clicks on a form button.This is the code i have for that button:
Dim intXX As Integer = 0
Do Until intXX = intX
userAvatar(intXX).Enabled = False
intXX = intXX + 1
Loop
The buttonNames is an array of all populated button names created at runtime. However, trying the .enabled = false at the end of that does not work. What other ways are there to do that with buttons created at runtime?
[Code]...
I'm trying to develop a program that turns matrices into their reduced Echlon forms. The user specifies the number of Columns & Rows for the matrix, which is generated by the following Sub Routine
Private Sub ButCreate_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles ButCreate.Click
'Columns and Rows are specified by the user
rows = TxtRows.Text
columns = TxtColumns.Text
'clears all of the controls(text boxes) from the TableLayoutContainer
[Code] .....
How to do is access/manipulate those newly created textBoxes. After the user enters values to those boxes, I want to assign each of their columns to an array.
I am using the follwoing code to generate Menustrip at runtime.
Dim dgv1 As DataGridView
dgv1 = Me.MenuDataGridView
ReadMenuInGridView(dgv1)
Dim MItems As New SortedList(Of String, ToolStripMenuItem)
For Each dgr As DataGridViewRow In dgv1.Rows
[Code] .....
Where the sub "ReadMenuInGridView" passes the DGV by reference and populates it with the menu item from the database. My question is,, the program as it is in the form listed above works fine (where I have a DGV "MenuDataGridView" created at design time), however, if I want to make it 100% dynamic and use a DGV created at run time I will not get the menu? Actually the program will not get in to the For loop?
Simply to do that we can replace the first 2 statement with:
Dim dgv1 As New DataGridView
'dgv1 = Me.MenuDataGridView
I'm developing an app which creates like 30 labels at runtime.The problem is that with the click of a button, I need to destroy those created labels.[code]...
View 17 Repliesglobal variable can be created during runtime?
View 1 Repliesi just made an form where with button add 10 textbox whith this code:
For X = 1 To 10
Me.Controls.Add(tx)
tx.Visible = True
[Code]....
now i want write somethings in textbox (i.e. textbox1.value="hello") but no find way, because in code is not defined textbox1, create at runtime (of course).
I have a form on which I want to place labels created by code executed by clicking a button(cmdAddLabel) at run time. I subsequently want to move the newly created labels around on the form. The following code sucessfully creates the labels at run time whenever the cmdAddLabel button is clicked:
Private
Sub cmdAddLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdAddLabel.Click
Dim
[Code]....
Been searching a trying examples for a couple of days and always fall back to the "null reference" error on this one. I have a set of instructions coming from a SQL database and the number of instructions is a variable. Therefore, I have a TabControl which I add TabPages to at RunTime depending on the number of instructions there are. The TabPages are then created with the names; Step1, Step2, Step3, etc.Each TabPage is made with the same controls and all of the controls are named the same from page to page (e.g. "instr" is the name of a TextBox control that exists on every TabPage).I can successfully create a GetControl method that will return the correct TabPage, but I cannot reference any controls on that TabPage.I can only change properties of the TabPage.If I try to reference a specific control on that TabPage, like the "instr" TextBox control, I get the null reference error.[code]
View 9 RepliesMy
Public Class Form1
Dim x As Integer = 0
[Code]....
As you can see, i can retrieve the tag of the button (which is created at runtime) without any problems, i've made a temporary msgbox to show me the value of the tag, just for testing purposes. What i do have a problem with, is retrieving the tag of the individual web browsers, how should i do this?
Next issue, how would i code for my buttons to show the web browser with the same tag as the button that's just been clicked?
i want to get the text that is input by the user to the textbox and use it in the parameter but why can i done this.. i declare a name for the textbox that i created during runtime but i cannot get what the text that input by the user.i use the (textbox name that will create during runtime).text but it gives me a blue line.
View 7 RepliesI have been doing occassional VB.NET for a few years but never had the need to do something like this until today.My app creates a few comboboxes during runtime, and I need a way to assign the values of those textboxes at design time.
View 9 RepliesMy program creates columns at runtime with the following code:
Cmd = New OleDb.OleDbCommand("ALTER TABLE [Parent] ADD [" & ColumnDate & "] int", con)
objCmd = New OleDb.OleDbCommand("ALTER TABLE [Parent] ADD [" & ColumnDate & "] int", con)
objCmd.ExecuteNonQuery()
I add data into the newly inserted column with the following code:
da.SelectCommand = New OleDb.OleDbCommand(sql, con)
Dim cb As New OleDb.OleDbCommandBuilder(da)
cb.QuotePrefix = "["
cb.QuoteSuffix = "]"
ds.Tables("SchoolMaticsDatabase").Rows(inc).Item(ColumnDate) = Hours * Num
da.Update(ds, "SchoolMaticsDatabase")
All of the above works fine; the issue arises when I try to edit the information originally placed in the newly added column. These are the approaches that I have taken. (None of them give an error message; it simply won't update within the database.)
da.SelectCommand = New OleDb.OleDbCommand(sql, con)
Dim cb As New OleDb.OleDbCommandBuilder(da)
cb.QuotePrefix = "["
[code]....
I added a column to the table manually via opening the access database and all the above approaches work for editing data stored in that column. So I believe it is something to do with the fact that the columns are created at run time.
I add textboxes dynamically at runtime. How do I access them later in the program?
View 1 RepliesSite is located at [URL] and the section in question is the "configurator" button on my top row navigation. Everything is written in the latest flavor of VB.NET and ASP 3.5, and I have a SQL2005 server available with my host. Here is the down 'n dirty of my dilemma:
During pageload, I get a list of all the parts in my parts table. Then I create an image object and 2 label objects per entry and place them in my fancy accordion pane control. Works great so far, I can get a giant list of pictures and text that's aligned how I like it (for now). Now - I really need a way to be able to have a visitor drag an image/label/label combo from the accordion over to a panel (or anything really) on the right side that is currently invisible. Once the dragged thing is dropped into the drop target, I would like it to fire a function or sub that I write in VB.
From what I've seen about jquery, apparently there is a way to make an element on my webpage draggable, droppable, or what have you. The example code for it - I'm not entirely understanding so a quickie sample would be great. I'm a fast learner and can apply it from there to my project. More importantly, how do I get objects that are created during runtime to be draggable, and fire my event that I wrote in the only language that I know?
[Code]....
I have written some code to generate 10*10 textboxes during run-time.the problem is; I don't know how to access / change them after they are created. after some googling, I found this code to show the text of ie box42;
MessageBox.Show(Me.Controls.Item("box42").Text)
but it gives an error (nullreference exception was unhandled) hereby the code;
For i = 1 To 10
For j = 1 To 10
Dim tb As New TextBox
tb.Name = String.Format("box{0}{0}", i.ToString, j.ToString)
[code]....
I have found multiple examples of how to drag and drop images, but all of them use controls that are already on the form at runtime.
In my program, all of my pictureboxes are being drawn during runtime with the following
[code]...
I have written a code to generate numerous command button during runtime depend on the user selection. I would like to find out how do we handle the command button click event?
View 4 Replieshow would I create an event procedure for something not yet on a form?
View 3 Replies