VS 2010 : Search For Text Within A String (Starting Point And Ending Point)?
Dec 31, 2010
I'm trying to extract a piece of text from within the string, defining both a starting point and an ending point. For instance, say I want to search for the text found between "That is a " and " car" in the string "That is a red car", so it would return "red".I know you can use .SelectionStart and SelectionLength, but the length of the word can change, so the selection length can vary. What I want is to establish a specific starting point and a specific ending point from which to extract the text from the string.
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Mar 2, 2010
I have several points where I draw a curved line from point to point using:e.Graphics.DrawCurve(p, theArrayOfPoints)Was wondering is it poss to draw text starting from the 1st point that followed the curve? This way the text bends.
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Jun 6, 2011
it was regarding in vb.net text operations, i want to replace the text by finding some particular text.but the problem arises when the starting and the at the end delimiter of the string is something same every-time but middle thing keeps on changing so how can i work out with that?? str = Replace(str, "abcdparameter = xyz123;", "abcdarameter = my defined parameter;")
i tried to learn some regular expressions but i am not able to get that.the xyz 123 is same every-time....and also there is one delimiter at the end of the parameter string so anyhow you can select the whole line and replace it.
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May 24, 2010
I want to know if its possible to loop in a variable and grab info from point a to point b
This is what I have stored in my Variable
PHP
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<div class="list_address">
[Code].....
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Jun 4, 2009
I hve been working with points a lot recently, and I have been wondering if there is a way to set a point without setting point.x and point.y separately. For example for (3, 5): Point1 = (3, 5) But that isn't right
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Feb 14, 2011
I have a Diagonal line drawn on a picture box on my forum and i need to know if the user has clicked the line I have the Start point and End Point of the Line and the mouse x,y location So i basically need to find out if the x,y of the mouse is on the line.
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Jan 13, 2011
I'm new to VB but completly new. I've dabbled with it a bit before but mostly from copying and pasting code from online. Is there a good book that I can purchase that will show me the ropes of the basics?
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Jun 12, 2011
I was wondering if it is possible to point to a textbox created in the form designer via a string variable. Basically, I'm creating a golf management system with a feature allowing a user to define their own course. Each hole has a corresponding textbox into which a user can input the hole's par and then the system should total up the first 9 pars, the last 9 pars and then all 18 pars; displayed in 3 different textboxes.
The input textboxes have been named txtP1, txtP2, ..., txtP18, so I was wondering if I could simply concatenate a loop control variable onto a constant of "txtP" to point to each input box.
This is what I have at the moment, but it's throwing up errors saying that .text is not a member of string.
Sub UpdatePar()
Dim inpar, outpar, totalpar As Integer
Dim pointer As String
[code].....
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Jul 29, 2009
i have a picturebox which displays a map i have 2 modes add point and delete point when the user clicks the picture it creates a point on the picture where the user has clicked that works perfectly its when i try and delete the point when it doesent work :/ i have all the points loading from an xml file this is the code i have:
[Code]...
basicly i want it to when the user clicks the point it fines the x any y in the xml delete the node then delete all the points on the map then reload them all according to the xml
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Feb 24, 2012
I have a text file as follows:for example:
apple:1 southafrica:34
5.00
orange:2 southafrica:23
[code].....
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Oct 18, 2010
I have the first part done, ... I can delete all the text before spacific text, ... now I need to delete all text after a spacific point in a string of text.
I'm making a better, and more simpler BandWidth Monitor, and I'm extracting the Bytes Recieved, ... but just the value, and leaving out all the rest of the text.
here ya go, check it out.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]....
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Mar 11, 2012
I'm trying to calculate the direction between two points on a two-dimensional grid. Actually I want to determine if that vector is within a range of two values. Suppose the grid's origin is 0,0 at the upper left corner, and 0 degrees represents north. I have a point A on that grid. I want to know if a line from point A to point B on the grid is within a range of directions between 111.8 degrees (a little south of east) and 158.2 (a little east of south). Those are approximations; the 111.8 is 90 degrees plus the arctangent of 2/5, and 158.2 is 180 minus that value. I worked out a series of calculations worthy of a medieval astronomer, but I suspect there is a simpler way. I'm going to have to do this for a variety of other vectors, and I'd like to generalize
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Feb 20, 2010
I know how I can construct an icon setting point by point, but that isn't what I want. I want to use a bitmap file or a jpeg -is easy to convert an jpeg to an bitmap- and built an icon that looks like this picture.
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Jan 17, 2009
I want to make a drawing application which needs a few drawing functions I cant handle myself as im not very mathematicly inclined The first on the list of functions is to create an arc from a start point, end point and radius. The method signature is as followes.
Function CreateArc(byval StartPoint as PointF, EndPoint as PointF, Raduis as single) As PointF()
'Code to create an array of points...
[Code]....
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Apr 10, 2012
I have a DataGridView that will occasionally have a RowError icon displayed in the RowHeader (shown below)I have code that displays a small form when the users mouse moves over the row header or clicks the row header.I would like to draw aline from the top-left of the form to the middle-right of the row header.I basically want to point from the form to the error icon.
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Mar 14, 2009
I need to move an ellipse from a known point on the screen to another known point on the screen.
I've tried using For.....Loops with less than desired results.
I can't remember everything I've tried, a lot of trial and error has been layed to waste. Lol
I've ended up with this code after putting together what I've tried, what I've learned elsewhere, and a couple of posts I've read on here.
All I want to do is move the ellipse from one point to the other along a straight line that forms the angle between the two points (X1,Y1) and (X2,Y2), make it grow from 2 pixels at it's start, to about 80 pixels by the time it reaches half way, then shrink from 80 pixels back down to 2 pixels by the time it reaches the point (X2,Y2).
Easier said than done.
Here's what I have at the present.....
Dim W As Integer
Dim H As Integer
Dim Num As Integer
[Code].....
....This seems like such a simple task, yet it's been a week since I came up with the idea, and I've had little success.
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May 9, 2010
come out with the codes for moving the mouse pointer from point (200, 100) to point (300, 400), repeatedly. Using VB 2008.
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Jul 28, 2010
I looked around the forum can't find something really simple.I want to scrape everything between the
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to
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copy it and use it right after it's website and I navigate using webbrowser1.
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Jun 21, 2010
i want to work on a shooting game,and i already have a code for the rotation of the image but i have a few problemFirst problem(for the tank /ship): i want the image to AUTOMATICALLY rotate facing the mouse cursor,i know how to rotate but but i dont know how to convert the location of the mouse to an angle that the image will face,,
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Feb 9, 2010
How can i point to record in GridView when i click the button to search for lastname? Im using OLEDB AND VISUAL BASIC 2008.
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Mar 30, 2012
assuming i have an isoceles triangle, where i know the height + base width, how
can i calculate the width of that triangle at 1/3 of the distance from the point + 2/3 of the distance from the point?
i thought it'd be simply 1/3 base width + 2/3 base width, but my drawing is +/- a few pixels when i resize it?
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Jan 16, 2010
How do yo convert a 3d point into a 2d point that can be displayed on the screen? This is the basic code that I need:
Dim ScreenXCoord as integer
Dim ScreenYCoord as integer
Private Sub ConvertPoint(PointXCoord as integer, PointYCoord as integer,
[Code[,,,,,
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Jan 17, 2012
How to add decimal point (with two decimal places) to string, without converting string to decimal? For example (Dim str1 as String), regardless str1 has value: 100 , 100.0 , 100.00, or 100.5 , 100.50..I'd like to get the output: 100.00 or 100.50, with two decimal places.
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Oct 4, 2009
I want to know how I can convert string to a point ( {X=150, Y=150} ) I'm having a little trouble figuring this one out.
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Feb 6, 2011
how to remove text. For example, I am trying to get the username of the logged on user (e.g. Bryn)into a variable. I did this with variable = My.User.Name
However this also brought the domain with it (e.g. aaabbbcccBryn).
Is there anyway of getting rid of the domain? The App will be used on many domains, so removing the first, say, 9 characters won't be any good.
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Jul 29, 2009
Application - Powerpoint 2003
VisualBasic - 2008
I want know, How can i extract the power point note text?
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Mar 14, 2012
I'm having some trouble converting a double to a string.I have a double value, like 43.64 and I need a string like this: "43.64"If I try to convert the double to a string I always get "43,64" what doesn't work for me..
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Feb 23, 2011
I am working on a way to change either the x or y value of a point and am getting an error while doing so. the code i am using to do this is the following:pts(currentNo - 2).X = pts(currentNo - 2).X - 10pts is a list of Points and currentNo is merely a count that im using to track where i am in the list. I am getting the following error
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Feb 20, 2012
I got this class from another vb help forum and I'm using it for fields that accepts monetary values. Is there a way to incorporate a '1-decimal' point only rule?ATM, I can enter values like this: 1.2.2.20000..I need to limit the number of decimal points used. (1.0000)[code]
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Jun 28, 2011
in order to create fancy custom end caps on the ends of a line, a structure like the following can be used:
Dim pts() As Point = {
New Point(-2, -2),
New Point(0, 0),
[Code]....
be used to create the same point array. I can see splitting these values into an integer array but how would these in turn be placed in a point array of whatever size is defined by the text values so they can be converted to end points of a line that is developed as values are changed in the text box.
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