Add To TextBox, Prevent Scrolling?
Mar 25, 2009
I have a textbox to which text is continuously appended (every second new status data at the end).I would like to act it as follows:- When the cursor is positioned at the end: Stay at the end, scroll the textbox (text disappearing at the top).- When the cursor is positioned somewhere else (not at the end): Stay exactly there, don't move the cursor, don't scroll, don't change the top line of the textbox.This seems to be surprisingly difficult (tried quite several ways).This is how far i came:
Private Sub addToTextBox(ByVal daStrg As String)
Dim posAtEnd As Boolean, selPos As Long, selLng As Long
If myTextBoxForm.txBox.SelectionStart = myTextBoxForm.txBox.TextLength Then
[code].....
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Apr 13, 2012
I am working with adding up user's scores based on their checks in a CheckBoxList. Every time a user checks a box, a value, X, is added to the overall score. When a user unchecks a box, a value, X, is subtracted from the overall score. No problems here.
The problem that I am having is that using the AutoPostback option in the CheckBoxList properties forces the page to load back to the top instead of staying where the user was situated, which means that they have to keep scrolling down after each check/uncheck. Is there a way to prevent this?
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Jun 11, 2012
I'm trying to print my visual into a multipage xps. The first page is working but the others are left blank.
Dim xP As Integer = 0
Dim yP As Integer = 0
xP = Math.Ceiling(WorkFlowCanvas.Width / pageWidth)
yP = Math.Ceiling(WorkFlowCanvas.Height / pageHeight)
Dim collator = writer.CreateVisualsCollator()
[Code]...
By making the visual in xaml and printing it I noticed the scrollviewer always scrolls the content up before writing it(the scrollbars don't move). Is there a way to 'freeze' the scrollviewer?
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Dec 28, 2011
I am looking for some tips on textbox auto scrolling text. I am developing a keyboard and a calculator. With a touch of a button corresponding letters or numbers are displayed on text. I like the text to scroll to display other letters for example 12345 appears on textbox fits in the textbox size, when i type number 67 it doesn't appear in textbox coz its not scrolling to left.
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Jul 30, 2009
i have a number generator which creates a number then a new line followed by another number. its set on a timer that goes over and over again until a desired number is reached. the only problem is that the numbers go off the screen and a scroll bar appears but stays at the top. is there a way to set the value of a scroll bar on a text box and if not how would i tie a vscrollbar to a textbox or richtextbox.
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Mar 23, 2012
I have a textbox with multiline enabled. I want to find out if the user is scrolling up or scrolling down on that text box. Is there a way to find it out?
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Apr 18, 2009
Is there a way to make a textbox into a scrolling marquee? It would need to update it's information every time it ran out of text to display.
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Jan 19, 2011
I'm trying to figure out how to pin a Picturebox to a scrolling Textbox so that when I scroll down in the Textbox the picture follows it.
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Aug 5, 2011
After scouring the articles online I have come up with this design for a winforms based touchscreen app that needs smartphone like scrolling. The app itself will run on a tablet laptop or touchscreen desktop.I put everything I want to scroll on a panel. Set autoscroll to true (which will show scrollbars)Now put this whole panel inside a groupbox.Shrink the groupbox until the scrollbars are hidden (visually hidden, not visible = false)
Now the fun part I am stuck at.I think I have to handle the mousedown, mouseup & mousemove on the panel to set the autoscrollposition so that when someone touches the panel and drags, it does it's scroll magic. Please help fill in the few lines of code in below method stubs. The msdn doc on autoscrollposition is very confusing since it returns negative numbers but needs to be set to positive with abs and what not.
Point mouseDownPoint;
Point mouseUpPoint;
Point mouseDragPoint;[code]......
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Mar 8, 2012
I have two issues. The first is that I want to make a textbox scrolling similar to how credits scroll. I don't want it to move on the form, just to scrolling the text down a line/pixel. I thought I could do it with the "Lines" element, but I'm not exactly sure how to execute it.
The other problem is with my flash screen. Right now I have it set so when a button is click, it goes onto the main form. I don't want to use the button but rather have it so if Enter is pressed at any time, it'll go to the main form. All the solutions I've tried to use involve the "e.Keycode" code, but for some reason its unavailable.
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Aug 16, 2011
I need to limit a Textbox and DataGridView to only enter text in the fixed size of the cell/textbox on the screen. So I have limited the cell/textbox so user can not change it size. Both allow multiline and wordwrap. cell/textbox is sized to accept 5 lines of data (wordwrap or enters) This is like an online form.So the text enter will be printed so I can not allow scrolling in the cell/textbox.
How can I stop the scrolling of the text inside the cell/textbox.
Also : if the user Paste into the cell/textbox how to truncate text if larger than display area.
sample settings:
DataGridView1.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.None
DataGridView1.AllowUserToResizeRows = False
[Code].....
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Aug 19, 2009
I currently have a label scrolling text, But for some reason it only displays Certain song titles/text. Does Anyone know why?!
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
OpenFileDialog1.ShowDialog()
AxWindowsMediaPlayer1.URL = OpenFileDialog1.FileName
[code]....
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Aug 18, 2010
The below code allows me to prevent a textbox to only allow numerics, backspace. I would also like to have the textbox to accept ":", but struggling to find the correct way to do this. Could anyone advise? Below code is in the Keypress event.
If Not Char.IsDigit(e.KeyChar) Then
If Not e.KeyChar = vbBack Then
?????????????
End If
End If
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Jul 8, 2011
I have spent the last hours trying to make an easy fix for this. Setting it to enabled=false is no good in this case. What I was looking for is a way to prevent the user to place the cursor in a multiline textbox. This is a read only textbox, and the user can't type anything in it, but for some reason he can still place the cursor in it, that is what I try to prevent.
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Mar 11, 2012
I have a textbox where the user enters their name, however it is possible to enter numbers in textbox, i was wondering if there is a pre existing function that only allows alphabetical characters to be entered?
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Feb 20, 2012
How to prevent textbox to be not accepting numbers in first
5 digits
Only characters in first 5 digits and other digits accept
numbers and characters
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Apr 29, 2010
I have a Textbox in which the user types in a name for a folder to be created. However, Windows does not allow the followin chars:
[Code]...
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May 5, 2010
Preferably without turning the "Enabled" property to false, because I still need to output text from it.
I made a custom control in which there is a textbox but I want it used only as an output control, for showing text and stuff. Problem is that as soon as my form opens up the focus is turned to the textbox and I cannot catch my keyboard events on the form anymore(since the other controls are pictureboxes). I need a way to make this box "unclickable" or any way in which it is impossible to attribute the focus.[url]...
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Apr 16, 2010
When you use a tab key to select a textbox, all text in it is automatically selected. What's the easiest way to prevent this from happening? (Setting the selection to none in Enter or GotFocus events doesn't work)
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May 27, 2011
I am making a chat program, that sends the message by pressing enter key. But when im pressing enter in the textbox im getting extra blank space. Is there any chances to remove this blank space from the textbox by using single code
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Oct 28, 2009
I have a custom text box component (inherits from system.windows.forms.textbox) that I created in vb.net (2005) that handles the input of numeric data. It works well.
I would like to suppress the validating and validated events from firing if the number hasn't changed. If a user is tabbing through the form and tabs from the text box, the validating/validated events are fired.
I was thinking that the text box could cache the value and compare it to what is listed in the text property. If they are different, then I would want the validating/validate events to fire. If they are the same, nothing is fired.
I can't seem to figure out how to suppress the event. I have tried overriding the OnValidating event. That didn't work.
Update:
Here is the custom text box class. The idea is that I want to cache the value of the text box on the validate event. Once the value is cached, the next time the user tabs through the box, the validating event will check to see if the _Cache is different from the .Text. If so that is when I would like to raise the validating event to the parent form (as well as the validated event). If the _cache is the same, then I don't want to raise the event to the form. Essentially the text box will work the same as a regular text box except that the validating and validated method are only raised to the form when the text has changed.
Public Class CustomTextBox
#Region "Class Level Variables"
Private _FirstClickCompleted As Boolean = False 'used to indicate that all of the text should be highlighted when the user box is clicked - only when the control has had focus shifted to it
[Code]....
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Oct 9, 2010
Ive been searching for 3D Scrolling Text in vb.net, i couldnt even find plain 3D Text;i have no starter code.Note: It is for an intro to my programs.
VB Version: 2010
OS: Win7
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Jul 27, 2010
I have a form which has a horizontal scoll bar, a vertical scroll bar, and a panel. The 2 scroll bars move the panel. When I execute the form, the panel will scroll under the horizontal scroll bar when using the vertical scroll bar. But it scrolls over top of the vertical scroll bar when using the horizontal bar. I don't understand why 1 of them goes over and the other 1 goes under. Is there some property that controls this? Or some way to that 1 set it up wrong? The vertical scroll bar is on the left edge of the form , to the left of the panel, and the horizontal scroll bar is near the top of the form, above the pane. Can anyone direct me as to how to get it to stop scroll over this bar?
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Oct 23, 2010
i need to scroll a datagridview, my scroll bar is set to false so i need to do it using code.currently i am scrolling using the following code, but i would like to modify the code to scroll from one line to the next and see the blue bar actually selecting the rows. how do i do so
Private Sub grdMouseWheel(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs)
[code].....
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Jan 17, 2011
What is the best way to force a list box to visually scroll down the list as things are added to it from within the program?
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Jan 19, 2009
I want to make it so when I scroll down on one listbox view, it will do the same on the other one. How do I do that? I have one listbox that lists usernames, and the other one that does the message... so we don't have to worry about one having a longer height than the other one.
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Feb 27, 2010
I'm working on a new application and I use the SetScrollInfo and GetScrollInfo Api's and I'm having some problems: 1. I'm able to scroll my own textbox control on my form but I can only see the scrollbar being updated and not the text inside the textbox control moving I'm using this
[Code]...
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May 25, 2010
A long time ago I wrote a program in VB6 that performs sideways scrolling by:creating a couple of device-independent bitmaps twice as wide as my display window.plotting my streaming data on the first bitmap until it reached the right edge of the window.copying the bitmap to the display window at the refresh rate.copying the data to both bitmaps, the second bitmap starting at x = 0 when the first reached x = windowWidth
ping-ponging the two bitmaps as the data continued to arrive The result is a display that scrolls sideways continuously as long as the data stream is flowing VB.NET and Windows.Drawing hardly support any of the VB6 tools I used to do this, and I can't find anything in the documentation that can take their place.
Is there a comprehensive guide to programming graphics outside the normal get-a-picture-from-here-and-put-it-there model?
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Sep 11, 2009
I want a code that when applied to text in Visual Basic 2008 it scrolls across the screen. I don't want anything flashy, just something basic to start off with.
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Oct 10, 2009
I have a read only multiline text box I'm using as an output box for a continuous string of data, when my data gets to the end of the last visible line the scroll bar activates and my text vanishes past the bottom edge of the text box and I have to manually scroll the text box to get back to the end of my data. is there anything I can do to make the text box scroll up so I always see the end of the data stream being past to it?
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox2.Text = TextBox2.Text & TextBox1.Text
End Sub
End Class
Above is a really quick and dirty bit, take input from one textbox and output to the other using a button click or some such. After so many button clicks get the text box to scroll without doing it manually with a scroll bar, so you always see the latest entry.
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