Unable To Retrieve AplicationSettings Information (object Name, Property Name) For Connection?
Dec 5, 2006
I am faced with the prospect of having to completely rewrite the application.I have suddenly started to get this error message all the time - it seemed to start after I added a table to the schema, but deleting the table makes no difference. I can't see anything wrong with the connection string, but as it seems to be entirely undocumented, that doesn't mean much.
The connection string contains DataSource=.SQLEXPRESS;AttachDbFilename=|DataDirectory| est.mdf;Integrated Security=True;User Instance=Trueand certainly the string works when I use "test connection" from the application setting edit box. I am assuming that for some reason it is not evaluating the Data Directory , but can't see any reason why it shouldn't. Any ideas gratefully received! What might be a clue though is that I can't get rid of the table I added. I have deleted it from the database, deleted it from designer and saved the file, but it just keeps reapearing! Even when it is not showing, there is still a
table adapter in the .xsd file. I am reluctant to start editing this manually because of the danger of screwing something else up - I did try but it caused an error somewhere else (VS helpfully didn't say where)
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Nov 23, 2009
Does anyone know what the problem is with this error message? One or more errors encountered while loading the designer. The errors are listed below. Some errors can be fixed by rebuilding your project, while others may require code changes. Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
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Sep 8, 2009
Given a connection object (or series of them), does anyone know of a way to backtrack and get the provider name? I'm trying to create a generic dataset generator that someone could load up with n DbCommand instances populate the dataset without requiring any further information.
Theoretically, as a command requires a connection object, that's all the information one should need to create this tool.Given that I'm populating tables in a dataset, I figured the simplest way would be using a DataAdapter. The only problem is that to generate a generic DataAdapter, I seem to have to go through the provider factory which requires a provider string - which I don't have.
Also, given that the provider for each command could potentially be different (i.e. commands across numerous databases), does anyone have any suggestions that would keep this simple?I'd like not to have to require the user to provide the provider string for each command object if I can avoid it. This way the user can just pass a param array of DbCommands and I can take it from there.
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Jul 28, 2011
I am using the following code to load an ArrayList with an object. [code]I don't know how to retrieve the object from the ArrayList using the Item property. I am using the following withOUT Success. The code is searching the arraylist for a match on serial number. Values(2) is correct and is working fine - the problem is purely getting the object information from the arraylist.[code]How do I pull the propertys back from the object in the arraylist to compare the values with Values(2)?
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Aug 11, 2010
I currently have a XML file for an application I am developing. I have built a a XMLFile.GetContent function to read my XML File and load the content into a set of specific objects. These objects are then added to a collection and passed back to the main code to be loaded into the memory of the application.I am looking for a dynamic way of loading the information from the XML file into a specific Object Property. I have added comments to the function to show what I want to make dynamic.Content of XML File
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Config>
<IQSDataSources>[code].....
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Oct 16, 2011
I have a Javascript function for my select box, but after I included runat="server" to it, the script debugger highlights on this line below:
' for (i = 0; i < sourceTo.options.length; i++) { ' and says:
SCRIPT5007: Unable to get value of the property 'length': object is null or undefined
I included it because I wanted to loop through it in code behind and perform some other stuffs?
Code:
<select multiple size="8" style="width: 135px" runat="server" id="outletFromBox">
<option value="JP">Jurong Point</option>
<option value="IMM">IMM</option>
[code]...
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Nov 14, 2009
I have three class files, accounts.vb and transactions.vb in addition to my form.vb. I am unable to retrieve a member variable from on class from inside the other. When the combobox index changes, the program loads the correct account (checking or saving) from two different sequential files. I don't think I have the calcBalance procedure in the correct class file. And that is what I am having trouble with. Accessing it to display it. [Code]
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May 28, 2009
Here's my VB code.
[Code]....
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Mar 19, 2009
I'm new to VB 2005, the code below is actualy coded from VB 6 and just converted it to VB 2005. I'm having trouble with line that's on bold letters.In VB 6 this works just ok. By the way the error message is "Unable to cast object of type 'System.String' to type 'ADODB.Connection'." [code]
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Jun 9, 2011
The program is currently trying to pull information from three different database tables and compiling the information onto one screen, to do this i am using three different connections and a function to handle the data at each stage. The issue is as my code hits PageLoadStage of "2" and runs the QueryDatabase() Function i am encountering an error of: "OleDB exception unhandled: No value given for one or more of the required parameters." This occurs on line 15 of the first code snippet. Can anyone explain this and/or identify any code issues if that is the cause.
[Code]...
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Feb 2, 2011
I was looking for some stuff online, and i was looking through my reference sheets for vb.net, but it seems in the code i have found, there is declare in methods. Below is an example i am talking about. The thing is, that i dont recognize it and believe that it is an earlier version of Visual Basic ( 6 or earlier) which used it. Should i just keep looking for different code?
Public Declare Function RegOpenKey Lib "advapi32.dll" Alias "RegOpenKeyA" (ByVal hKey As Long, ByVal _
lpSubKey As String, phkResult As Long) As Long
Goal: Find information on how to implement a method which will check if a certain DSN exists, and then if it does, extract the information and use the information for connection purposes.
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Mar 15, 2009
I have a simple scraper. It works on some websites, but on some there is this Error:
Quote:
IOException was unhandled Unable to read data from the transport connection: The connection was closed
It is occuring at "Dim htmlresults As String = Urlcontents.ReadToEnd()".
'Create the HttpWebRequest object
Dim req As HttpWebRequest = WebRequest.Create(URL)
'Set the timeout to 1 second (or 1,000 milliseconds)
req.Timeout = 10000
[code]....
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Aug 27, 2009
I am using VB2005 and trying to put an application together.What it needs to do is retrieve information from a binary file, possibly alter that information, and put it back into a new file.The file is a .wav file with data appened to the end. There is an additional section at the end of the .wav file which stores xml data.I have found that if I open this in a hex editor and make a 1:1 swap on any of the bytes that the application that the file is for can still read the XML.If I tried to add or remove characters from the XML then it would not read. I located a header byte and incremented it to resolve this.
This worked as an excellent bandage to do conversions where the data always needed to be changed to the same thing.What I have been asked to do is build logic that allows for different things to happen depending upon what data is contained within the file.The method that I am currently trying to impliment is:
Read through the file with a system.io.binaryreader
Searche for a bytestream that will signal data is coming
For example:
If System.IO.File.Exists("C: est estread.wav") Then
Dim findit() As Integer = New Integer() {&H3C, &H55, &H73, &H72, &H44, &H65, &H66, &H30, &H31, &H30}
Dim i As Integer[code].....
And then extract all the data till the end of element marker "<" It seemed like there should be a better way and I was looking for some insight. If I proceed with this method, I will have to read the file one time to gather the information and then a second time to write it all out with the header modified for length.This is my first experiene with working with binary files in this way.Also,I've been experiementing with building a string and slapping it back in at the end using the binarywriter.write(string) method.I noticed that it was putting in header characters before the string.These seem to change if I change the length of the string.At one point it was d0 07. Later it became e7 07. Does anyone know of a way to prevent this header from being inserted?
I tried a for each loop to grab all of the characters from the string, convert them to a byte array and deposit the byte array into the file, but the header remained the same. When I write the byte array generated from a system.io.binaryreader I do not get this header.
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Apr 15, 2010
I have a some information on a textfile. I want to input the customers ID number in a textbox or inputbox and get all the customers information like name, address, Date of Birth, age, etc. I know how to retrieve information from a textfile by typing the name of the textfile a getting all the information in the textfile. How to do is to retrieve certain information from a textfile. How can I type in the customers ID and pull up all the customers information and then store it in an array.
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Sep 21, 2009
I wanted to make a program where it will retrieve data from websites I use regularly and display important parts to me such as my horoscope, friends online, new emails etc. I'm just having a problem figuring out how to get visual basic to display the website information.
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Feb 4, 2010
I am having a bit of trouble figuring out how to collect a piece of information from a web page. Here is the web page I want to retrieve the information from:
RuneScape - The Number 1 Free Multiplayer Game
I would like to retrieve the first "Price" of the item and collect the price every time I execute the code. I understand how to retrieve the source code of the webpage and split strings but how would I retrieve that price?
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Jul 15, 2011
How do I retrieve information from the internet such as the weather?? Are there any tutorials on for complete beginners??
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Aug 27, 2009
I searched on the forum / Internet for the solution how a PropetryInfo object (of a Public property) can reveal if it has a Private Protected Setter ... it was all in vain .... all help I found was about how to "Set" value of a public property having a Private Setter.I would like to know if I have a PropertyInfo object of a public property, how would I know if its Setter is Non Public?
I tried, in a exception handling block, where I did a GetValue of the PropertyInfo object and then called SetValue by setting the same value back... but to my surprise it worked well and didn error out.
[Code]...
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Feb 22, 2012
I have
Public stack() As CTest
I want
Public stack() As Object
The latter is giving the error "Unable to cast object of type 'Object' to 'CTest'." when used:
Dim thestack As CTest() = testdatabase.getStack
Where testdatabase.getStack simply returns stack();
Public Function getStack() As Object()
Return stack
End Function
This fixes it, but it's not ideal (for me personally):
Dim thestack As Object() = testdatabase.getStack
So if I could keep the variable as-is (Public stack() As Object) and then do something along the lines of class.stack() = CTest I should be able to do Dim thestack As CTest() = testdatabase.getStack because the object array will programmatically have changed from Object to CTest.
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Oct 18, 2009
How do I retrieve the computer model information?For example, I have a dell inspiron 1545. How do I retrieve that information in a label? I search a lot of WMI information but can't seem to find it. It SAYS 1545 on my system properties
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Mar 11, 2010
this is my coding when i run this coding for display "Procedure or Function 'sp_developer_display' expects parameter '@developerid', which was not supplied."
this error will display
my sp in sql express is
ALTER PROCEDURE dbo.sp_developer_display
[code].....
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Jan 15, 2010
on a Windows Form, an object myObject is bound to myObjectDataBindingSource like this:myObjectDataBindingSource .DatSource = myObject on the form, i have a check box bound to the property: chkProp1 for example of the object: myObjectDataBindingSource In the code when the checkbox is clicked, I need to go in code and change another text property of the object txtProper2 for example like this:
Private Sub chkProp1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chkProp1.CheckedChanged
[code].....
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Jun 3, 2012
Created an XSD file that represents my table structure from my database. Created a class file to hold my functions such as the one below.
Code sample:
Public Function GetUser(ByVal UserID As String) As xsdUser.UserDataTable
Dim SqlConn As New SqlConnection(ConfigurationManager.ConnectionStrings("MyDatabase").ConnectionString)
[Code]....
Now it seems odd to me to have two files doing what should be contained within just one file. I feel like I should have one class file called "User" and have member variables in there along with the class functions like the one above. But all the tutorials I see are using these data tables. On top of that I'm not sure how to handle the if statement at the end of the function. I don't think I would want to return a whole DataTable since I should only have one row, and I also don't know how I would handle an error if my function is supposed to return a data table. I suppose I could return an empty one and then if the table is empty in my code then I would handle it there, but this also seems messy.
Is this the common way of retrieving information from a stored procedure? Or is there a more up-to-date method that I'm not seeing in my search results?
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Jun 5, 2012
I am real new in vb. I need to connect to ms server and retrieve information for database. Just simple ''select * from update, delete and so on.If I add new data source using data source configuration wizard - everything is fine, but I want to use just simple selects.I use
Dim connectionString As String = _
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=BBD-2;Initial Catalog=wilopumpen1;Persist Security Info=True;User ID=*****;Password=****;"
Dim queryString As String = _
"SELECT * from dbo.tableName "
[Code]...
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Aug 5, 2009
I am using oracle and trying to create a datagridview but when i try to create the dataset i get the error "could not retrieve schema information for table or view" stating my database and table name. I am using the Oracle client not the OLEDB as i have always used that and had no problems. I am using Oracle 11g.
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Apr 10, 2009
How do I retrieve hardware device information on a machine via WMI?
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Dec 11, 2010
I have the following code:
Dim searcher As New ManagementObjectSearcher("SELECT * FROM Win32_LogicalDisk WHERE DriveType = '3'
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Sep 29, 2011
I am writing a basic blog application to learn mvc 3. I have problems retrieving posts by category. The url looks like /Blog/Browse/Category_Name. I can get the posts if i hard code a value for category. So it would seem that Category_Name is not getting pass to my EF statement in my controller. the category had a period in it so it was not matching.
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Jul 4, 2011
I have a listbox of a object called Account, which has 2 fields, password, and username. How can I compare a New Account to all the accounts in the list and see if the password matches?
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Jan 1, 2010
What i'm trying to do is retrieve 2-3 pieces of information from a parsed html file, then add the data into a listview in the corresponding columns i was initially going to do a function for each piece of information to retrieve but thought maybe i could do it all with 1 function instead.
[Code]...
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