I need to use a Vertical Scroll Bar to scroll through some controls (an array of checkboxes to be precise) on my form. Their number changes depending on the user's requirement during program execution so I need to change the Maximum value of the scroll bar in my code. Also, the SmallChange property needs to be modified depending on the set maximum value (other wise scrolling through the controls will take ages ).
View 4 RepliesI need to implement an hscrollbar that increments/decrements by .1. How can I do this if the smallchange value is of integer type? Is this something I can change in the hscrollbar's properties or a piece of code I need to write up?
View 1 RepliesMy question is regarding a scrollbar in visual basic adding it the "picture way" in the ide and i want to be able to have it so that i can change the number of scrolls it does like pages, but with the scroll bar changes data depending on it's position. I have the following code to try and get the scroll bar to have 6 positions starting at 1With frmIndashone
.vscPage.min = 1
.vscPage.max = 6
.vscPage.value = 1
[code].....
In my vb.net project, i am using tab control and some DGVWs, command buttons. i use to dynamically place these controls into a tab page and set the autoscroll proprty to true. once the scroll bar grown and when i try to scroll down the bar to view the bottom most controls, the scroll bar automatically retriving back to its original position. i have to click 2 or 3 times in the bottom of the tap page and scroll again to view the bottom most control. i am unable to figure out using the offset property of scroll bar.
View 3 RepliesI am developing an editor program using rtb in vb.net. Now, i hav added some controls in it using rtb.controls.add statement and i want to scroll these controls with scrollbar.I hav read somewhere that autoscrolloffset property can be used to scroll controll child controls added in a scrolling control but i dont know how to use it.
View 1 RepliesI am using a custom built driver to communicate via Modbus TCP with a Windows CE Controller.
There is a property declared in the driver as a SHORT. I need this property declared as a LONG. I have tried everything I know of to change this programmatically but I am having no luck.
' Declared in the class
Dim dev As vHMIModbusMaster.CDevice 'this is the Modbus Comm Library
Dim WithEvents MBSerial As vHMIModbusMaster.CModbusSerial
Dim WithEvents MBEthernet As vHMIModbusMaster.CModbusEthernet
[Code]....
Address is sent to the event from a timer event. It is the .Memory_StartAddress that I need to be a long.
I come from a VB6 background and have only recently started using .net. The developer of the driver has been very slow to respond and I am having a hard time convincing him that the problem is with his code. The thing is that it works fine as long as I send an address less than 32767.
I have a form which has ONLY three buttons. Somehow they got named Button5, Button6, and Button7.
When I try to rename them Button1, Button2 and Button3 to match code, I get a Dialog box which, if I look at Details, says the Button name is already in use.
Is there something I can do to enable the renaming?
I have a form with a dropdownbox two listboxes and two buttons on it. I removed a "select" button as I just used the DropDownList1_SelectedIndexChanged, but the event would not fire until I used the suggestion from:Why DropDownList.SelectedIndexChanged event does not fire?
It involved changing the AutoPostBack='true' and EnableViewState="true" properties
So now the DropDownList works but with the two listboxes, the SelectedIndex stays as -1 and does not change even when selected.
[Code]...
I think it has something to do with post backs, page_load or the selectedindex changed event of the listbox, it worked perfectly before I made the modifications.
Let's say I've got a TableLayoutPanel with 50 cells in it. Inside each cell is a separate text label. If I want to change the color of each of those 50 labels at run-time to the same color, is there an efficient way to do it? (so that I don't have to write 50 lines of LabelX.ForeColor = X, etc).
Not that I would mind writing 50 lines of code for this, but I would like to figure out the most efficient way to do this sort of thing, for future reference.
I am inheriting my own datagridview (say MyDataGridView) from the standard datagridview control. What I want is that certain properties of MyDataGridView should have a different default value than what its base have. For example, AllowUserToAddRows,
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I m implementing control based security in my application. where i m saving controlname (per form) in database, which are to be restricted. So far I have implemented the security and restricted control get disabled.
Now what i want to do is that i have to prevent that for those controls the "control.Enable" property should not change. how can i restrict that.
I have achieved the functionality by canceling enable=true property in "Invalidated" event of the control. but this is not some generic way. I have to map this event for all controls in all forms :(.
What i really want is that as all my froms are derived from same parent which implements the security. so the parent should some how restrict enable property from changing.
So,HOW CAN I PREVENT CONTROL enable property from changing in their parent class?
I am looking for a code exmple. I have a data combobox and I want the user to be able to search it by changing the text property.
View 3 RepliesThere is no BackStyle property in Visual Basic 2005 ... But I read in MSDN that changing the BackColor of label control will make the background of label control Transparent ... So we'll be able to see through the label control ... I changed the BackColor property to Transparent but it didn't work for me ... BackColor changed to Transparent ... But still I ain't able to see the image behind the label control ... (PictureBox) ... Background color of label still remained the background color of Form i.e. Control color ...
View 6 RepliesI have an Enum file, as shown in first code block. Though it's first time I use an enum file, so maybe it's not correct to use it like this.. My purpose is just to be able to reference a global parameter from anywhere, so I can just type DataInterval.M1, and it will be treated as an integer... or.. will it not ? urther I have a property in my DataSeries class, of type DataInterval. And in this class I also have a bunch of methods Get/Set etc. to do different work on the dataseries (Inherits List(Of BarData)). roblem: The interval property keeps changing unexpectedly every time the GetNextCloseTime function is called.
''' <summary>
''' "Time Frame" of data series
''' </summary>
[code].....
I added a groupbox and changed its heading's font and fore color. The problem is that, when I add a button to this groupbox, it automatically changes its font and fore color to that of the groupbox!How to prevent this from happening?
View 2 RepliesI'm trying to create a button that will hide the panel that I have docked at the centre of my user control. [code]This works to an extent. However, when the bottomPanel is set to Fill it seems to fill the entire control, and not just up to toolStrip1. Can anyone tell me why this is happening, and how to correct it?
View 1 RepliesI have created several simply custom controls and I used them in my app. Now, I changed the background color in a custom control class, because I wanted an other color for this type of control. But in my app, the background of this controls didn't change. Why? I assume, I don't need to place again this controls on each forms to get the new background color, or do I? If yes, this is very stupid in my opinion.
View 4 RepliesI'm trying to edit the text of a toolstripstatuslabel from a module in my project, but whatever I do, I can't change it. [code]But that didn't work either.I tried to change If Me.StatusStrip1.InvokeRequired Then to If Me.InvokeRequired Then, but that didn't help either. I also tried to change the modifiers property of the toolstripstatuslabel to public, with no result.
View 4 RepliesOn my .aspx page i want to be able to show and hide certain panels depending on user selections (radiobuttonlists).
For example in my aspx page i have;
<form id="form1" runat="server">
<asp:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True">
<asp:ListItem>1</asp:ListItem>
[Code].....
What I've done so fa
Private Sub LogInToolStripMenuItem_Click(sender As System.Object, e As System.EventArgs) Handles LogInToolStripMenuItem.Click
Try
[code].....
i made a class library with by adding two .jpeg images and changing build action property to embeded resources and i saved i want to use this two images from this .dll into my application .
View 9 RepliesI have added two text boxes - both multiline.and I have the following.vb Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
[Code]...
I used to use ADODC with VB6. Once I've set up databindings I can set a text box or other controls to link with a database's specific field by changing the Text property under Data > DataBindings. I want to change the field the text box links to at different times using code. How can I do this?
View 13 RepliesI have a tab control with two tab pages. One page has the auto scroll enabled since there is to much content in the page. The middle mouse wheel doesn't scroll the scroll bar; I have to actually click and hold the scroll bar and drag it down to scroll. Is there a property to allow this?
View 2 RepliesI am having an odd problem with the Horizontal Scroll Control in my program.I am using it to scroll a series of panels across a form.This is my code:
Private
Sub scrHoriz_Scroll(ByVal
sender As[code]....
The problem is that this works perfectly if I use the left and right arrows and it also works perfectly if I use the scroll bar's slider SLOWLY. If I scroll using the slider and move it quickly then the scroll gets out of sync.The small change and large change are both set to 1 and maximum is set to 8
I have a DataGridView with a panel above it, that contains a group of textboxes above each column. My DataGridView has a horizontal scroll bar. What I want to do is when the DataGridView scrolls horizontally, scroll the panel with textboxes above it, so they stay aligned.I tried handling the DataGridView's scroll event, but I'm not sure what to do with it.
View 1 RepliesI am loading several command buttons into it (one in each grid box). I have the panel set to autoscroll. When TableLayoutPanel is set to AddColumns, all works well. However, I dont want horizontal scroll, I want vertical. When I set TableLayoutPanel to AddRows, a vertical scrollbar will not appear.
View 4 RepliesHow would I leave the vertical scroll position as it is and set the horizontal scroll position all the way left if it isn't already in that position? I've been using Me.AutoScrollPosition and have come up with code that is satisfactory but I haven't been able to always leave the vertical scroll position exactly as it is and just move the horizontal scroll position to the left limit.
View 4 RepliesI have a textbox that shows events on a program, which I add. I use the 'scroll bar' option on the textbox to show the vertical scroll bar, but how do I make it stay at the bottom most possible? I am using this code while I am trying to learn how to do what I want the scroll bar to:[code]But how do I get it so the scroll bar will stay at the bottom-most it can? I'd like the newest, most recent events to appear at the bottom of the textbox, and to have the user not have to scroll down every time something new is added.
View 2 Repliesi have 2 controls on a form. Panel1 and picturebox. I am using the following code to zoom in.
PicBox.Width = PicBox.Width + 100
PicBox.Height = PicBox.Height + 75
'PicBox.Left = PicBox.Left - 50
'PicBox1st.Top = PicBox.Top - 20
i am also using the following code to try and scroll whilst zoomed in
Inherits System.Windows.Forms.Form
Private m_PanStartPoint As New Point
Private Sub picbox_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PicBox.MouseDown
'Capture the initial point
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I have set the panel to autoscroll and added scroll bars but they do not scroll far enough... They only scroll about 2cm.