VS 2010 XML Searching Returns As Non-existent Value
Oct 22, 2011
I am trying to search and XML file for a variable on a specific node. Following a tut I can setup a search for the node correctly and it returns its name - but it doesn't find any values for any children of that node.
I get this error:
Faster_2 is neither a DataColumn nor a DataRelation for table Skill. Area Highlighted:
ListBox1.Items.Add(dv(index)("Skill_Name").ToString() & " " & dv(index)("Faster_2").ToString())
Here is my VB
[Code].....
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Mar 15, 2011
Im getting an error right now for this code, and I'm wondering if it's me, or VB2010 has changed?
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Left Then
[code].....
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Nov 8, 2010
I can search for the word Love in an .rtf file and return every occurance of the word into a RichTextBox. It returns the word and the scripture the word is in, but it also isreturning a bunch of weird text like: archan78988yykp etc etc. How do I onlyreturn the scripture with the searchedword, in this case the searched word is love. The code I am using is as follows:
<
If Line.Contains(Me.rtbSearch.Text) Then
'show search form
[code].....
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Oct 15, 2009
I have a program that implements various registry changes. The problem is depending on the version of Windows the registry entry may not exist. If that is the case an error is thrown since it the registry key does not existThe code is below that actually calls the changes if the checkbox is checked or unchecked. The functions contain the registry changes which are all correct the problem is the error handling I have implemented below it seems to be causing a problem in te program where the rest of the code afterwards is not getting executed properly. What is supposed to happen is if the checkbox is checked it will run the disable function. However if that registry key is not found the program will give a message with a box saying that item does not exist and then it will automatically uncheck the box and turn the checkbox text red. There is more then one of these also. It does do this however it doesn't seem to execute the rest of the checkboxes after it in the code.
If the box is unchecked it will uncheck the checkbox thereby enabling the function
[CODE If chkMyApplicationsService.CheckState = CheckState.Checked Then
Try
[code].....
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Aug 19, 2010
This is the code i have so far (no i didn't write it all by my self took help from net) but i am unable to understand why i am getting this error
Imports CookComputing.XmlRpc
Public Structure blogInfo
Public title As String
[code]....
error i get is "Invoke on Non-Existent or Non-public proxy method"
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Jun 4, 2011
I've tried to run a program that requires the Flash.ocx file to write a registry. Without the file I get a database creation error and the program closes after I close the error. The suggestion [URl].. does
not work as I have tried to do this twice now as the solution center suggests.
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May 23, 2012
There is a very strange problem with a Windows Service I am working on that I would like to understand why it occurs. The service loops every 5 minutes and then within that loop it loops through keys containing webservice URLs that are numbered such as:
<add key="URL.1" value="http://dummy1.com/Service.asmx"/>
<add key="URL.2" value="http://dummy2.com/Service.asmx"/>
<add key="URL.3" value="http://dummy3.com/Service.asmx"/>
The code that does this check is:
If String.IsNullOrEmpty(AppSettings("OM." & intCount & ".Name").ToString) Then
When it hits a key that doesn't exist an exception is thrown and the service stops and waits for 5 minutes until the next loop.This usually works great but every week or two the Windows service will crash on that line without any Exception. The application log has a line from before that line but nothing after, none of the Try Catches are hit (the main one is catching the base "Exception" class).In the Event Log for Windows is the following:
Faulting application name: MyService.exe, version: 1.1.2.0, time stamp: 0x4fa22a24
Faulting module name: KERNELBASE.dll, version: 6.1.7601.17651, time stamp: 0x4e211319
Exception code: 0xe053534f
[code]....
The weird part is that this line of code is executing fine 300 times a day for at least a week which is around 2000 times before that one time it causes a full crash of the application. why this is occurring? I have changed that line of code to not rely on Exceptions and it has been working fine for a week now with no crash so could be something to do with too many Exceptions - maybe causing a stack overflow?
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Nov 25, 2011
Im making a login system that encrypts and decrypts the username and password. My encryption code is:
Private Shared Function enc(ByVal targetString As String, ByVal maskvalue As String) As String
Dim Index As Integer = 0
Dim ReturnValue As String = ""
[code]....
The enc function works for both encrypting and decrypting (I've tested with a MsgBox alert. The problem I'm having is when the program loads, it reads the file and decrypts it. However, instead of properly working, it returns one character in the first textbox and nothingin the other without any error being thrown.
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Aug 30, 2011
I have a class that inherits List<T> [this is a C# project, but it can relate to VB.net] but I want to know if there's a way to force the index to return something else....let me give an example:
In the original List<T> implementation, whenever you call for an item on the list, like so:this[0];You get whatever T is. What I want to do is override that, and grab whatever T is, then return a certain value of T.
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Oct 30, 2011
This is just a simple question I'm sure, but while coding I just realized that possible this could cause me some problems. My knowledge still of Using blocks and returns is fresh. But as far as I know once you return something, everything stops dead in it's track because you have your answer and theres no need to continue.
So I was wondering if I had a Using statement and a return nested within it does it still process the using as should? IE. disposing and cleaning up resources afterward.
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Nov 13, 2011
I've converted an html to XML and now i want to get all the child nodes nested within a DIV element with a specific attribute (class="itemInfo").Because the html that the XML is based on changes from time to time i want to use a more "safe" relative root,
(something like : "//div[@class='itemInfo']").Problem is that i always get 0 nodes ...
Dim doc As New System.Xml.XmlDocument()
doc.Load("products.xml")
Dim root As System.Xml.XmlElement = doc.DocumentElement
[code]....
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Mar 13, 2011
Code Block 1 First I am calling my function to obtain a pixel color at a specified coordinate.[code]The odd part is while looking at the results as a string they appear to be the same, but while using If Not TheColor.Equals() in code block 2 the program returns that they are different. Before threading code block 2 this was not a problem so I can only assume the threading is causing the problem. I'm unsure as to how I can fix this... Additional unrelated problems I am having are:
- On WindowsXP the colors being read are not the actual color as which the mouse is located.
- While using print-screen there seems to be a bit of lag and some times unreliability, is there another method to get a pixel color at a specified location? Note that GetForegroundWindow works on Vista/7 but not XP, and GetActiveWindow is unreliable.
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Jun 11, 2011
[Code]...
By my logic, this should only assign .length to index IF the length of strItem is longer than 0. This check is there in case the listbox is empty, or the user has not selected an item. However, everytime I go through this code without an item selected I get:
[Code]...
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Apr 3, 2011
When I use IE8, it displays the page fine, but when I use the web browser control in VS 2010, it shows the page differently (in a bad way).
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Jan 17, 2012
I have a listbox with multiple items:
Quote:
The Sopranos (Season 5) Boxset (DVD)
Braveheart (DVD)
MTV The City - Complete Second Season 2 (DVD)
I have a TextBox where a user enters a search:
The Sopranos Season 5 Since ListBox.FindString() wants a String and not a RegEx, I can't use a Regular Expression. (right?) So, if TextBox.Text = "The Sopranos Season 5", then ListBox.FindString(TextBox.Text) will not find my entry with "The Sopranos (Season 5) Boxset (DVD)".
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Jan 31, 2012
Write a program that requests a color as input in a text box and then determines whether or not the color is in the text file. The program should use the Boolean-valued Function procedure IsCrayola that returns the value True if the color in the text box is a Crayola color.
Public Class Form1
Dim colors() As String = IO.File.ReadAllLines("colors.txt")
Dim IsCrayolaAnswer As Boolean = IsCrayola(colors)
[code].....
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Feb 29, 2012
I want to search for a specific string within a text file, however instead of hard coding these string values into the system is there any way I can have them within an external file such as a text file and have these values that are to be searched in there and then pull them from there?
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May 27, 2011
I've been trying to figure this out lately by looping a richtextboxfinds code replacing the integer with a value -1 than the integer before it after the starting string in that code. But for some reason I can't get it to loop through my text upwards.
It loops down through the text fine, however i'm not satisfied with that loop either, it seems a bit buggy.
[Code]...
The down search seems to take 2 clicks on my button handler to actually change the selected text that it finds, and then I used the code for an upward search, it would search one more down upon pressing my "search up" button, before not doing anything after that on the next click. So i'd assume something is wrong with the down search function as well.
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Oct 25, 2011
I have a vb.net app that I can read a .xls file into a dataset or loop through as oledbdatareader and it gives the same result.Some of the rows have all nulls when I loop through them but if I open the same file in Microsoft Excel I can see that row fine.[code]From the info above the first two SKU values would come through fine but when I get to the 3rd row it would show a null.Is it possible that it kind of inherits the first rows type and since the 3rd row isn't all numeric if nulls it? [code]
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Feb 9, 2012
I am trying to read the HKEY_USERS hive of a remote machine with this Class
Imports System.Management
Imports System.Management.Instrumentation
Public Enum RegHive As UInteger
[Code]....
The value of sSubKeyName is the user's SID + "" + Network (e.g. S-1-5-21-1606980848-2025429265-839522115-560021Network). Now under that key are various subkeys containing mapped drive letters. But it never returns anything.
Strangely, if I use the OpenRemoteBaseKey method it works BUT I don't want to use that because using WMI lets me specify alternate credentials and OpenRemoteBaseKey doesn't
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Nov 18, 2011
I am working on a simple vb project to read data from a PC serial port and write that data to a file.The data is ascii sent in Hex format. I used MySerialPort.ReadChar() to read data and MyStreamWriter.Write(MySerialPort.ReadChar()) to write it to a file.
I copied my code below, sorry about the format.The trouble is: MySerialPort.ReadChar() acts the same as MySerialPort.ReadByte() , both takes the Hex data input and returns data in decimal format.I tried to use Convert.ToChar(MySerialPort.ReadChar()) to covert decimal to char, but it's too slow.I tried decimal.ToChar(MySerialPort.ReadChar()), but VB doesn't recognize decimal.ToChar, even after I installed .NET4.
Did I do something wrong? how to make MySerialPort.ReadChar() to read Hex data and return char?
[Code]...
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Apr 1, 2011
I know the sort of a thread is already here, but I have a different question. I have ListBox1 and TextBox1 and the Items of ListBox1 are:California
Chicago Washington and as I start typing the text into the TextBox1 (TextBox1_TextChanged), then it will select the first Item in ListBox1,that is closest to the text in TextBox1:
For example:
If I type "A" to the TextBox1, it will select California (California)
If I type "C" to the TextBox1, it will select again California (California)
If I type "CH" to the TextBox1, it will select the Chicago (Chicago)
AND!!! If I type "SH" to the TextBox1, it will select the Washington (Washington)
so it won't only search the first letters, but it will even search the letters in the middle of the text, too.
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Aug 10, 2011
Im having a problem passing a date and time stamp from vb to mysql. My code is as follows:ComboBox1.Text.ToUpper() & "', '" & TextBox1.Text & "', '" & Now() & "'"Where the comboBox populates the first field, the textbox populates the second and in the third I get 0000-00-00 00:00:00. I have formatted the field as date and time - which is what I am after
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Mar 4, 2011
I need to search a keyword put in a text box. In my case, I want to search records by the month name. I would want a command button that displays results according to the keyword typed in a text box. Now I tried two methods, one with a text box, one with a query. Both Do search, but the fields return empty.
Heres the code for my form where the datagrid is:
vb.net
Public Class Form6
Private Sub Pay_CalculatorBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Pay_CalculatorBindingNavigatorSaveItem.Click
Me.Validate()
[Code] .....
I want to display summaries of data entered, by criteria, like by department, by month, by year etc. How do I do that one? I have vb 2010 express.
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Aug 24, 2009
Is there an easy way to search through a List(Of Integer) and find duplicates? Or do I need to do loops to search through it with each number, comparing it to each one?
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Sep 19, 2011
I am coding on Visual Basic 2010 and need some My Access database table has following information:
FirstName
LastName
PhoneNumber
Basically what I am trying to do is create a Search function where the user will enter a First and Last Name in the search boxes and upon hitting the ''Search'' button the program will look through the database and check if the records exists.
If the record does exist then I want the Phone number to appear in a separate textbox which is named txtPhoneN. I have included the code I use to connect to the Database. I have already managed code the part to Add new record to the database.
[Code]...
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Nov 25, 2011
Does anyone know how to do this? I'm stuck on a boat right now out to sea(Navy) and don't have access to vb.NET, its in my berthing...
So someone clarify this code and see if it works?
Dim index As Integer = list.FindIndex(Function(value As String)
Return value(0) = "STRING HERE"
End Function)
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Sep 27, 2011
So after my script runs a batch file it executes the shell command:
adb shell dumpsys cpuinfo > sample.txt
which then if you open sample.txt you see this:
[code]......
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Mar 27, 2012
I have a requirement to search large piles of text for keywords
The "keywords" are known in advance - but the number is variable.
The text is large - I've had 50000 byte strings in tests already...
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Mar 16, 2011
I have a project to make a "3x3 magic square" and I'm not quite sure how to begin. A magic square is a 3x3 table of 9 values where the sum of the values along any row, column, or either diagonal all add up to the same value.I have to use listboxes to create a form displaying a table of 3 rows and 3 columns whose elements can be individually updated. The solution should have the following features:
- a procedure that initializes a Listbox to hold the value "?", representing the value "undefined", in each of its locations. The number of locations should be provided as a n additional parameter.
- a procedure that will update the contents of a listbox by replacing the currently highlighted entry with a value provided as a second argument. The program should at most have at most one entry among the listboxes highlighted.
I am trying to use a Function that returns an integer value: -1 if not all the elements on the table contain values, 0 if the rows/columns/diagonals don't sum up to the same value, or the sum common to all the rows columns, and diagonals is returned if everything is alright.The user will enter a 3x3 set of numbers. The program will monitor the status of the table as values are entered and displays the status in a textbox that describes if a magic square currently exists. If not all the entries have been made to the table, then the textbox should display a message indicating so.
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