String Concatenation - Problems Caused By Space(s) Within Path/File Name?
Mar 29, 2011
I've got a small app which I use to start a 3rd party application. When run from a shortcut the VB app starts the 3rd party app to and when loaded it displays its own file/folder interface, the VB app the closes itself. However, if you open a file in explorer associated with the 3rd party app, the 3rd party application loads and opens the file itself and not the file/open interface.
Uh OK, so what's the problem??The issue is I have changed the file extension associated with the 3rd party app to now use my VB app. I can successfully open files with the app from explorer if there are no spaces in the file or folder path however if there are, the 3rd party app opens and displays a File not found error message and gives the path up to the point where the space then follows.The relevant snippets of code from the app relating to the issue is below, specifically Dim Arguments variable where I am not quite sure how my string cocantenation should be to deal with the value of the variable 'Filename' which may or may not contain spaces.
[code]...
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Jun 15, 2011
I'm developing an application in vb.net. You drag any type of file onto the exe, and a window pops up with some options for the file, then it saves the file to a different location, works some SQL magic, etc. It works great for the most part. The only issue I've found is that if the path of the file contains any spaces, the application will crash immediately with the error window:[URl]..I'm using: Private filename as String = Command$ This is located right inside my form's class declaration, not within a sub/function.Without this line, my program runs fine (although useless, without accessing the file).I've also tried (I think this was it, I don't have the code with me at the moment): Private filename as String = Environment.CommandLine So, in vb.net, is there a way to drag a file onto an exe and use that path name, even if there are spaces in the path name?
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Apr 12, 2012
I have a simple question about string concatenation. Following is the code. I want to ask why s6 = "abcde" and not "akcde"? I have change the s2 value to "k".
Public Class Form1
Public s1 As String = "a"
Public s2 As String = "b"
[Code]....
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May 15, 2008
I've spent the last 3 hours trying to figure out why this string won't concatenate.
The function takes in a mapped drive letter and creates a UNC path and returns it.
Any thoughts welcome:
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Oct 18, 2011
In VB.net, I tested concatenating 100k strings and found out one thread alone did it in 23 milliseconds. Two threads (each concatenating 50k) then joining the two at the end took 30 milliseconds. Performance wise, it didn't seem beneficial to utilize multiple threads when dealing with only 100k concatenations. Then I tried 3 million string concatenations and two threads each handling 1.5MM always demolished one thread handling all 3 million. I imagine at some point using 3 threads becomes beneficial, then 4, and so on. Is there a more efficient way to concatenate millions of strings in .NET?
fyi, this is the code I wrote:
Imports System.Text
Imports System.Threading
Imports System.IO
[code]....
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Nov 9, 2011
The below program throws a runtime error (invalid conversion from double) because there is [code]It compiles fine, but when the program is run, it throws a runtime error.Is this a compiler bug? Shouldn't it stop me with a compiler error, like invalid syntax ?
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Sep 13, 2010
Possible Duplicate: The difference between + and & for joining strings in VB.Net.In VB.NET you can use either += or &= to concatenante a string (ignoring using a StringBuilder for this question -- this is directed at a very simple concatenation).
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Nov 24, 2010
I am facing a really very interesting problem with string.
My code is
[Code]....
But when I comment those lines (which are uncommented in code above) its working fine.
I am taking value in filepath variable from file dialog's FileName property.
EDIT: I have also compared the values of variable stropt and strwithpara with "IF" condition and found those are same.
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Jun 14, 2012
I'm trying to concatenate two properties into one string like so:
public class thing
public property word() as string()
public property count() as integer()
[Code]....
This is what I want, but it doesn't help that its in the debug output...I need to put it into a single string. I've tried using a_thing.count(i).tostring, but it doesnt work. If I look at the arrays individually, they have exactly the contents I want. But I can't concatenate them. Does it have something to do with suppressing the new line that debug.writeline usually creates?
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Jul 30, 2011
The intent of the code is to open an xls file -minimize it , search for keywords . there are columns like test case name ,priority(simple ,medium and high) with associated keywords.If keywords are found, it shld save the test case name - Priority in a text box. When i run this code i am getting err in
[Code]....
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Jun 11, 2010
So I ran into a problem when running a command whose Path contained a space.apparently anything after the space would be treated as a parameter to the command.In the code below, 'path' is the path to the command and par1 and par2 are arguments to that command. The code below works, but could someone tell me why it works?Initially I was creating a literal string by placing around it like so: """string""" , but I needed the fourth quote when passing a variable.How is the use of quotes functioning here? [cod]
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Feb 15, 2010
I get an "augmentexception was unhandled" error whenever I run this script. The string assigned to "location" is fine, in fact when I paste it to the clip board and replace the "location" string in the ReadAllText() it works fine. Any suggestions? I assume this is a super easy fix but I've been at it for quit a while with no luck.
Code:
Public Sub OpenQuestions(ByVal questionreturn As String)
Dim Qraw, location As String
[code].....
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Sep 15, 2011
The reason I ask is that I want to print, at run-time, a file in the application's resources, like this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim printProcess As New Process
printProcess.StartInfo.FileName = "C:UsersGeoffrey van WykDocumentsCountdown_Timer_Help.rtf"
' printProcess.StartInfo.FileName = My.Resources.Countdown_Timer_Help
printProcess.StartInfo.Verb = "Print"
printProcess.Start()
End Sub
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Jan 23, 2010
The reason I ask is that I want to print, at run-time, a file in the application's resources, like this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim printProcess As New Process
printProcess.StartInfo.CreateNoWindow = True
[code]....
When I use "C:UsersGeoffrey van WykDocumentsCountdown_Timer_Help.rtf" as the argument of FileName, it works. But when I use My.Resources.Countdown_Timer_Help, it says it cannot find the file.
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Feb 5, 2012
How do I extract the file path from the following connection string?[code]...
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Aug 1, 2011
I have an editor that saves text files and html files. I want to open my html file in Internet Explorer.
The code for opening the IE and the file is below
Shell("C:Program FilesInternet Exploreriexplore.exe C:abc.html")
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Aug 22, 2006
I have a Access program and I'm using VBA code in the background to run Winunzip using shell command. Well, the path of the .zip file has spaces in it and it's not recongizing the path as a valid path. Is there a another way to tackle this problem besides the shell?I can't us pkzip either. Has you can see I had to use progra~1 instead of Program Files.[code]
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Sep 21, 2009
Dim dbconn As OleDbConnection
Dim DBCommand As OleDbDataAdapter
Dim DS As New DataSet
dbconn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:COLORsitedataCUFORHDR.dbf;Extended Properties=dBASE IV;")
[Code]...
I prefer SQL server but im afraid in this app I have no choice. I think the .DBF file is v III dBase according to a thrid party .dbf viewer. The code explodes on the DBCommand.Fill(DS) line, telling me I have provided and invalid file path. The path is good to go.
Should I be using a driver with a different provider? When I remove the Extended Properties parameter I get an error unrecognizable database format - hinting in this case the path is correct.
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Dec 13, 2009
I've searched everywhere to find out why the heck my program is doing this, but couldn't find anything like it...? I'm making a flash card program. Part of my program takes images corresponding to other data from a certain area, chosen by the user, and moves them to another folder, for later use. I want to store the path for the image next to the other data, storing the path as a string. When no image is chosen, the variable for the path is simply "no image".
[Code]...
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Nov 6, 2009
I'm creating window application with VB.NET and flatfiles.the problem is how do i store the connection string in the app.config file that include the application.startup path?
<add name="cn" connectionString="provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Application.StartupPath + "data;Extended Properties=text;" />
i got some error when writing to app.config.
"Missing attribute value on attribute 'Application.StartupPath'."
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Mar 22, 2012
Say I have a string LineOfText = "UserName1 Password1 UserName2 Password2" how would I just grab the last word (Password2)
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Sep 25, 2011
How would i get a certain text inside a textbox to equal that text space to space or null to space?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If Textbox1.Text.StartsWith(Textbox2.Text + " ") And Not String.IsNullOrEmpty(Textbox2.Text) Then
Textbox1.Text = Textbox1.Text.Remove(0, Textbox2.TextLength)
Textbox3.AppendText("a")
End If
Btw: after i finish this step my project will be finished!
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Feb 4, 2010
I am having a big problem with deleteing a file form the server. I have the filename for a image stored in my SQL database. the problem is i am getting an error of "Illegal characters in path. " Here is the code below:Everything is working fine until the delete command.
Protected Sub DeleteButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim tmpEquipID As String = Request("EquipID")
Dim tmpImageID As String = (CType(FormView1.FindControl("ImageIDLabel"), Label).Text)
Dim d As New equippicsDataContext
[code]....
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Feb 25, 2010
i have a requirement that my <xsd:string> should allow space.it should not validate the space. but naturally it will not allow space. but i need it should allow space.
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Jun 9, 2012
I would like to get the width of some text drawn by GDI+ in an Integer so that I can adjust the position of a cursor.
I used:
"lCursor = g.MeasureString(vInputText, Font)"
In which 'lCursor' is the offset for the original location of the cursor. But apparently the output of MeasureString is not integer and can't even parse it to integer.
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Feb 22, 2010
I got the following code to capture information for files on a specified drive, I ran the script againts a 600 GB hard drive on one of our servers and after a while I get the error [code]How can I avoid getting this error? The server drives are quite a bit <????> and I would imagine that the CSV file would be at least 40 MB.I commented out some lines in the code, using double ticks ('') so you can see where.
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Oct 7, 2009
How do I add a space between every character in a string of text?For example:Change abcdefg"
To "a b c d e f g"I have two text boxes on my form, one for input, the other for output of the re-formatted string.
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Nov 19, 2011
How can I add space after every 4 characters to string that returned from a function? I know the returned value it is 8 or 12 or ...etc.
for example function myString will return the value of ABCDEF12XY1Z
How can i display in textbox1 as ABCD EF12 XY1Z
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Jan 16, 2011
I have a string that has three spaces in it.
In the following examples, underscores represent the spaces:
Quote:
_x-xx-xxxx_x.xx.xx_xx
I need to remove just the first space. Now, i tried just replacing the space with nothing, like so:
VB.NET
If s.Contains(" ") Thens = s.Replace(" ", "")End If
But, that removes every space. I also tried .StartsWith, but it still removed every space. I didn't actually expect that to work, but if I hadn't tried it, I wouldn't have actually know.
how to remove just that first space?
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Apr 21, 2011
I want to Replace a string with space here string is comming from DB, here string looks like as followes (This is my first name : "rama" and my second name : "krishna") so now i want to replace the above String as ( This is my first name : rama and my second name : krishna ) So i want to replace " this with Space..
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