Calculations Using A Rich Text Box?

Mar 28, 2011

As part of an assignment, I need to add numbers which are displayed in a rich text box. The numbers are read from a text box. The user needs to be able to input the numbers as many times as possible. Since, the numbers all come from the same text box, I am unsure how to retain the old information and add the new information to it.Since I am not really able to make my point clear, I attach this picture: RTB.PNGAs you can see, I also have a problem with the heading repeating itself. Is there a way of forcing it to only appear the first time?Here is the

Private Sub AddMoreItemsToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddMoreItemsToolStripMenuItem.Click
'Retrieve number from textboxes

[code].....

View 5 Replies


ADVERTISEMENT

Unable To Load Rich Text Files Into Rich Text Box?

Jan 12, 2009

I am unable to load rich text files into my rich text box. It worked fine yesterday, would there have been anything I could have changed by accident?

With OpenFileDialog
.Filter = "Text format (*.txt)|*.txt|Rich Text Format (*.rtf)|*.rtf|All files (*.*)|*.*"

[Code]...

but I am getting the error File format is not valid when i attempt to open any Rich Text file

View 4 Replies

Rich Text Box - Load Specific Text In The Rich Text Box When The User Load The Form?

Apr 4, 2010

I have a rich text box which I use in order the user is able to add pictures, coloured writing, different font etc... however I need to load specific text in the rich text box when the user load the Form.how I can add (I guess) the HTML to load this every time the user load the form.

P.S the text will change depending on who loads the form so I can not do a simple

RichTextBox1.LoadFile("C:Documents and SettingsDesktopSigniture.rtf")

View 2 Replies

Format Text - Rich Text Box - Where The User Will Be Entering Information - The Text Is Black

Aug 11, 2011

On the main form of my application, I have a Rich Text Box which is where the user will be entering information. The text is black. then, i have a button which calls the dialogue "Notes" A dialogue appears, with a rich text box. the user should then be able to enter text into the box, click "OK", and the text entered into the Notes dialogue be inserted to the rich text box on the main form -- with the font colour "Red". The rest of the text in the main rich text box on the main form should remain black.

View 2 Replies

VS 2010 - Rich Text Box - Getting User Text In The Text Changed Event

Jan 20, 2011

I'm Making a Simple syntax highlighter and I'm Doing the highlighting in the text Changed event of a RTB and for obvious reasons I can't re highlight the whole document each time someone presses a key so i highlight one line each time the text changes. But this creates a Problem. If someone pastes code into the RichTextBox It only highlights the last Line. So is there a way to get if the user typed the text in with his keyboard or pasted it from the clipboard in the text Changed event?

View 6 Replies

Perform Calculations On Parts Of Text?

Mar 18, 2012

How would you go about performing calculations on parts of inputted text in vb 2008?For example: if i wanted to find the number of "a's" in the first 9 letters divided by 9 and add it to the second number of "a's" in the second set of 9 letters divided by 9. Then output the total in a textbox.

View 7 Replies

Display Calculations In Specific Text Boxes?

Sep 27, 2011

I have to use the financial.pmt method and display the calculations to certain text boxes?

'Tyler Fritzinger
'Mr. DeCava
'VBI
'Quick loans project
'9/22/11

[code]......

View 2 Replies

Insert Text To Rich Text Field At Text Cursor?

Mar 28, 2010

I have a question, how would i have a button, then when you click it, it puts the text at the text cursor in the RTF?

View 5 Replies

Starting Calculations - Writing A Program That Has 6 Text Boxes

Nov 17, 2009

How do I start writing a program that has 6 text boxes. A person would enter a member number if they have one, number of movies rented at $1.80 a piece. A Text box should then display Total Rental Price, and if a member number was entered, a 10% discount is given (the total of the discount shows up in another text box) and after there discount is applied the Amount Due is displayed in yet another Text Box.

My boxes are named:

memberNumberBox
moviesRentedBox
rentalPriceBox = $1.80
totalPriceBox
discountBox
amountDueBox

This is all supposed to happed when the customer clicks on a calculation button named: Button1

This is what I have so far, but I don't even know if this is correct, as I am getting 1 error relating to a name not being declared. Please help and clue me in to where to start!

Public Class Bonanza
Private Sub memberNumberBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles memberNumberBox.TextChanged

[CODE]...

View 3 Replies

VS 2010 : Checking For Empty Text Boxes Before Doing Calculations?

Sep 19, 2010

I'm writing a program for my class, which pretty much is an energy cost calculator. It takes 4 inputs from 4 text boxes and multiplies them, and the result is the cost. Well, now I have to come up with a way to check for empty text boxes and display a prompt to enter a number. I've tried inserting multiple codes to display a prompt and to no avail nothing has worked, I also receive the error "when casting from a number, the value must be a number less than infinity" error.

View 3 Replies

One Sub Procedure / Change Text Color In Rich Text Box / Without Button Handler?

Oct 8, 2010

everyone! I've been at this for a while, and I'm not sure how this issue can be resolved:I'm working on a project in VB.Net, and I have a form with a rich text box. I have a groupbox with 4 radio buttons inside that are intended to change the font color of the text. Coincidentally, I have to repeat this same functionality for a 2nd set of radio buttons that would change the text font family.

At any rate what I've only been able to do is the following to successfully change the font color of whatever text I highlight in the rich text box:

Private Sub rbtnBlack_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles rbtnBlack.CheckedChanged
rtbxTextEditor.SelectionColor = Color.Black
End Sub
Private Sub rbtnRed_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles rbtnRed.CheckedChanged

[Code]...

Is there a way that I could write a sub (I'm assuming I would use a sub, since I don't think I need to return anything, thus eliminating the use of a function) that would handle the action of changing the selected text color in the rich text box without having to use a separate sub for each radio button? Mind you, per my teacher's specs, she doesn't use a button handler for any of this.

View 1 Replies

Math Function - Populating Some Text Boxes With Results From Calculations

Nov 29, 2010

how to go about populating some text boxes with results from calculations. To be more specific, I'm trying to do some trig to calculate various parts of a ci0rcle and will be populating any two of the text boxes then click on a button to get the missing values. I was thinking along the lines of a loop until all values have been calculated.

View 14 Replies

Make First 60 Characters In A Rich Text Box A Different Color Than The Remaining Text?

Feb 7, 2009

is it possible to make first 60 characters in a rich text box a different color than the remaining text?

View 25 Replies

Parsing A Text File In Order To Extract Data For Subsequent Calculations?

Oct 21, 2010

I am using Streamreader to read a text file containing data such as the following:

IN;SC;PU;PU;SP1;LT;VS10
IN;SC;PU;PU;SP1;LT;VS10
PW5;PU4179,27448;PD4179,29951;PD3244,29951;PD3244,30286;PD5494,30286;PD5494,29951;PD4555,29951;PD4555,27448;PD4179,27448;

The final goal is to use the numbers next to the PU and PD characters to perform specific calculations.

Essentially, I think the code needs to do the following:

1. Read each block of characters ending in a ";"

2. If the block commences with anything other than PU or PD, discard it

3. Extract the numbers in such a way that calculations can be performed. The following is an example:

x y
PU4179,27448;
PD4179,29951;

[Code]....

Essentially, there will be hundreds of these rows and I will need to sum up the deltas so that a specific formula can be applied.

I have tried doing this a number of ways but each seem very inefficient (using text boxes to store/swap data and creating additinal text files are 2 methods I have tried) and so I'm looking for some direction.

View 3 Replies

Forms :: Show Text In Column In Rich Text Box?

Oct 15, 2009

I will show 3 columns of text in rich text box. i want show the column border with color.i can separate the texts with tabs or spaces but showing data in columns and cells will improve the visual of my program .

View 1 Replies

Output Formatted RTF Text To A Rich Text Box Control?

Feb 24, 2012

Okay, so what I want to do is directly output formatted RTF text to a Rich Text Box control in VB.NET. I don't want to find the text, select it and color it as it is not practical for what I'm doing. I've tried outputting RTF code but that isn't working either. Can I actually do this or will I have to write a dll?

View 1 Replies

System Root And Printing Text To A Rich Text Box?

Dec 31, 2011

I am working on an applictation to scan windows files to check for missing files, i have a couple questions on how to do this.I would like to use the %systemroot%system32 that way that it doesn't matter what drive letter it is, i'm not sure how to do this because when i tried it, it told me the file i was looking for didn't exist (in this case C:windowssystem32 undll32.exe) which does exist. Is there some way to use the %systemroot%?

Also, i am trying to print the resaults to a rich text box such as if rundll32.exe is missing put in the box "rundll32.exe is missing". How do I allow it to write it in the box, I tried the print command, but it didn't work.

View 4 Replies

VS 2010 Transparent/Background On Rich Text Box Or Text Box?

Mar 17, 2012

I've been wanting to create a look like the attached jpeg Ive been looking around for a few hours for a solution to make text boxes transparent or have a background image. I've found a few projects on this form and elsewhere which include transparent text boxes, but every time I try to use it the way I need to--with the text box over a picture box--there are always various rendering errors. Most of the time, the text box is transparent if its just placed on the form (not over any other controls). But when I place them over other controls (like picture boxes), the 'transparent background' always take on the color of the form background.

This is one that I was trying to use. I found a few others around, but they all had the same render errors more or less.[URL]...I figured transparency or background images would have been supported natively. Anyone have any ideas? Maybe I missed something in my searches. I didn't really see anything which adds background images in text boxes (rich or otherwise). At this point, I'd just like anything that works, so it doesn't really need to have transparency--just a simple background image would be great.

View 9 Replies

Change Text's Color In Rich Text Box?

Oct 20, 2010

How can I change certain text's color (like Visual Studio does with "Public Class" or "Public Sub") is inside of a Rich Text Box?

View 14 Replies

Fully Justify Text In Rich Text Box?

Jun 27, 2009

How can I fully justify text in rich text box?

View 1 Replies

Image And Text Transfering From 1 Rich Text Box To Another

Dec 25, 2009

I want to transfer data from one rich text box to another but when i use RichTextbox2.text = RichTextbox1.text it transfer just text not images.if there is any way to do so?

View 4 Replies

Large Chunks Of Text In A Rich Text Box?

Apr 22, 2010

I have ~ 1 page how to that is currently in a text file which I want to add to a richtext box.I am just wondering if there is some way I can just copy/paste it so it keeps its formatting etc.

View 1 Replies

Multiple Text Colors In Rich Text Box?

Jun 20, 2010

have more than one text color in the Rich Text Box, because when I highlight one word and use the color changer, it changes ALL of the words in the text box, and I want to know how to be able to have a specific word, or words, be a different color.

View 13 Replies

Protect Specific Text In Rich Text Box

May 2, 2010

I want to protect specific text in rich text box , I tried with

RichTextBox1.Select(1, 100)
RichTextBox1.SelectionProtected = True

above code is working fine but when i retreive data from database in .rtf format & I try to protect some text then its not working in first time it works second time

View 1 Replies

Rich Text Box - Colouring Specific Text

Sep 2, 2011

what I am trying to do is create an effect in a richtextbox so when the user types any text surrounded by Brackets { } is coloured a different colour to the rest of the text say blue for example. How would I go about doing this?

View 3 Replies

Rich Text Box Get One Word From Line Of Text

Nov 12, 2010

In my program, I have retrieved several lines of text in RichTextBox1.text. I need to get a

name(without the colon) using a keyword that is on the same line.[code...]

Lets say I set a keyword "vacation" and I need the code to get the name Sara that is in the same

line.I have seen some tutorials that retrieve left, middle, right that gets maybe the last two

letters in the string etc but I need it to get the Name without the colon.

View 4 Replies

Search For Text BackColor In A Rich Text Box?

Nov 23, 2009

I'm trying to make a program that can do some statistics on text in a rich text box. I'd like to count the number of instances where text appears with a certain back color, for example where text is "highlighted" with yellow.

There seems to be no function to get the backcolor of text at a specific index, you can only get the backcolor of text which is selected, like this:

Dim backColor As Color
backColor = RichTextBox.SelectionBackColor

This means, by applying this nasty trick, I would have to manually select every character in the rich text box before I can find the backcolor:

For i = 0 To RichTextBox.Text.Length
RichTextBox.Select(i, 1)
If RichTextBox.SelectionBackColor = Color.Yellow Then
yellows = yellows + 1
End If
Next

However, this takes a very long time, because the program has to select and deselect every character.

What options are there to speed up the process? Disabling the paint event?

View 1 Replies

Set A Line Of Text Link In Rich Text Box?

Jul 21, 2009

I want set a line of text link in rich text box of vb.net. Like for example: I want to know you

The word want, I want to set a link word.

View 1 Replies

Tabbed Rich Text Box Text Color?

Apr 9, 2011

So I've tried a few different things I though may work, and none of them do. I can't figure out how to change the color of the text within the selected rich text box inside a tab control.

View 1 Replies

Take Certain Text From A Webpage And Paste It Into A Rich Text Box In VB?

Feb 5, 2011

Is it possible to take certain text from a web page and paste it into a Rich Text Box in Visual Basic? I'm going to use this http://google.com/complete/search?output=toolbar&q=mlb to generate a bunch of keywords and I want to highlight just the keyword paste it into the Rich Text Box. How can I do this? Also a better way to describe this is almost scraping the keywords through all that code and putting them into the richtextbox.

View 3 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved