Error - System.Data.Function Is Not Available In This Context Because It Is 'Friend'
Feb 25, 2011
I'm currently trying to create a NEWID() function in my DataContext in LINQ using the solution here, however, when adding the partial class to my DataContext.vb or a separate DataContextPartial.vb, I get the error System.Data.Function is not available in this context because it is 'Friend'.
I've come across this when accessing data types before and that was in easy fix of setting it to Public, but I'm not sure where the properties for function could be or how to change them.The code I have is converted to VB.NET from the C# in the linked answer above:
Partial Public Class CMSModelDataContext
<[Function](Name:="NEWID", IsComposable:=True)> _
Public Function Random() As Guid
I am getting an error message: "Pervasive.data.sqlclient.v is not accessible in this context because it is 'friend.'" This error message appears when I hover the cursor over the "For Each v In qv" line in the following code:
I've spent a substantial amount of time trying to figure this out, but I keep getting the same error
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll A first chance exception of type 'System.NullReferenceException' occurred in project1.exe
This happens when I try to use the DataReader.my code is
Public Function Identification() As List(Of Integer) Dim returnIndex As New List(Of Integer) Dim dbCount As String = "SELECT Bookingid FROM bookdetail WHERE Date =" & getCurrentTimeString() & " 12:00:00 a.m." Dim count As Integer = 0
i am trying to connect to an MS Access database and I am getting an erro message on the following line of
searchtable_command = New SqlClient.SqlCommand(searchtable_string, testsearch_connection) Error:'System.Data.Odbc.OdbcConnection' cannot be converted to 'System.Data.SqlClient.SqlConnection'.
Here my connection string:
Dim testsearch_connection As New Odbc.OdbcConnection("Provider=MSDASQL;Driver={Microsoft Access Driver (*.mdb)};Dbq=C:CesarAccessdatabase.mdb;Uid=admin;Pwd=;")
When bulk renaming files (14000 of them) i get this error: The CLR has been unable to transition from COM context 0x4cefd8 to COM context 0x4cf148 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.
My code is as follows:
Private Sub frmTest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim asd As List(Of String) = FileIO.FileSystem.GetFiles("D:Music").ToList Dim rs As New ADODB.RecordSet("SELECT * FROM Songs", My.Settings.Files_Database__Connection)
Do While rdr2.Read() Dim var1 As String = rdr2.Item("Week").ToString Dim var2 As String = rdr2.Item("L1").ToString Dim var3 As String = rdr2.Item("L2").ToString
It generates the following error: A first chance exception of type 'System.Data.SqlServerCe.SqlCeException' occurred in System.Data.SqlServerCe.dll
Interestingly, if I use a numeric value for the variable it for LSArraytemp, it writes to the database no problem at all.
I am using VS 2008, Office 2007, and Win7 Home Premium on my system.I have a simple application which should be a breeze to build. All I am attempting to do is pull data from an Access database with four small tables into a data grid on a windows project. Should be simple, set up the data connection, choose a datagrid from the table in the data source view, drag it onto the page and done, right?I can't get it to work. It will all work fine until I attempt to run or debug the project. The data will not show up. The data grid does, but I get this error: A first chance exception of type 'System.InvalidOperationException' occurred in System.Data.dll
As I said, the project seems to build fine, but it will not pull the data. After the initial build I get the message that Windows will show this page in Compatibility View. Is it something with Win7 Home Premium, or a setting somewhere?
I have a windows service written in .NET 2.0 that will run every 5 minutes and executes bunch oracle SQL/PLSQL scripts based on time/validation, it throws the above said error some times against some SQLs, the same SQLs run fine at later point without any error, I have no idea what is going on with the app. I am not sure if this has any thing to do with oracle connection pool as I am properly closing the connections after every SQL execution.
Exception:
System.Exception: Unexpected return code: 1 at System.Data.OracleClient.DBObjectPool.GetObject(Object owningObject, Boolean& isInTransaction) at System.Data.OracleClient.OracleConnectionPoolManager.GetPooledConnection(String encryptedConnectionString,
I've got a webservice serialization issue that is causing quite a headache and am hoping to get a little assistance before I end up pulling my hair out or something equally drastic.
I got this message because of a long process: ContextSwitchDeadlock was detected Message: The CLR has been unable to transition from COM context 0x3dc190 to COM context 0x3dc300 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time.
To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations. I've poked around on the internet and on a forum, someone suggested to use application.doevents(). I did that and the messaged goes away. In an earlier thread a member wrote that using application.doevents rarely was used appropriately. Is my situation a proper usage of application.doevents or is there something else I should be doing?
I'm writing an application that imports and tidy up address data into a cleaned, deduped excel workbook ordered in rows with each column as an address field. One of the issues I've ran into is that we sometimes get a workbook where the multiple address fields are held in a single cell with line breaks. I've written code to extract all of this data out of the excel sheet in to a dataset with each sheet as a table and the address fields contained within. I now want to create a new Excel workbook from this data with the address fields in Row and columns the problem I have is I can Open/create the Workbook but when I try to insert a new Sheet (Table) I get an error saying the Workbook is read only....
Private Sub MakeSimpleXL(ByRef DsTemp As DataSet) Dim dsTable As Data.DataTable Dim tblName As String Dim dsRow As Data.DataRow
[CODE]...
Here is the error: System.Data.Odbc.OdbcException: ERROR [42000] [Microsoft][ODBC Excel Driver] Cannot modify the design of table '3 _ 10$'. It is in a read-only database. at System.Data.Odbc.OdbcConnection.HandleError(OdbcHandle hrHandle, RetCode retcode) at System.Data.Odbc.OdbcCommand.ExecuteReaderObject(CommandBehavior behavior, String
[CODE]...
It looks to me like it is trying to create the table (Sheet) but has the workbook opened as read only....
I need another (dozen) pair of eyes on this. The following code:
Interface iRuleEntity Function GetRuleViolations() As List(Of RuleViolation) End Interface Partial Public Class Feedback
[code]....
is giving me this error:'Feedback' must implement 'Function GetRuleViolations() As System.Collections.Generic.List(Of RuleViolation)' for interface 'iRuleEntity'.
I am trying to perform a simple bound connection between an Access database and a text box on a form. This is actually Chapter 18 of the "Microsoft Visual Basic 2008" book.I get the same error message when trying to create my own project "MY ADO Form" or the "ADO Form" project supplied from the DVD provided with the book. I am running the 90 Day Trial Version of Visual Studio 2008 with SP1 and Net 3.5 SP1.
My operating system is the 64 bit Version of Vista with all updates.The error when I try to run the application in the debug mode is:"A first chance exception of type 'System.InvalidOperationException' occurred in System.Data.dll"and as a result no data shows up in the text box from the database and the data selection bar is grayed out in the form. The underlying database "Students Data Set" appears to be fine as I have seen the correct data for the fields "Instructor" and "PhoneNumber" prior to running the program and when connecting with the database.
I have an InvalidCastException Error in my program. The program is that i try to insert an employee record into a database table after getting the details from a form. I've used Money data type is SQL Server for salary and SqlTypes.SqlDecimal data type in employee template class. i've used a stored procedure to pass the values and i add the basic value by passing a parameter by the method
Dim prm8 As SqlParameter = com.Parameters.Add("@basic", SqlDbType.Money) prm8.Direction = ParameterDirection.Input prm8.Value = emp.Bsc
I've used the money datatype itself even in the stored procedure variable.I get the following error.
failed to convert parameter value from sql decimal to decimal Even if i use prm8.Value = Convert.ToDecimal(emp.Bsc)
I get an error Unable to cast object of type 'System.Data.SqlTypes.SqlDecimal' to type 'System.IConvertible'.
I can't get past this error in my loop through the data reader specifically dr(12). I tried adding .To String but that doesn't seem to work either. Can someone help me with what need to do so it can read even if there is a Null value. My code is below:
While objDataReader.Read() 'Set up DataRow object Dim dr As DataRow = DataReaderTable.NewRow
I am getting this error when I am tring to load string type to data table)
Using connection As New SqlConnection("connectionstring;") connection.Open() Using Command As New SqlCommand("SELECT ClientId,forename,surname from t_clientdetails
I've been reading about access modifiers in VB.Net lately, and there is something that I can't really understand: How do elements in a Class (or Module) inherit the modifiers of their enclosing block?For example, suppose you have a Friend class Bla in an assembly, with a public method Foo:
Friend Class Bla Public Sub Foo (...) End Class
Does it behave differently than when Foo is set to Friend?
How do you add an item to the system context menu? I would like to let my users be able to right click anywhere and launch this program. I cannot seem to find it documented anywhere either.
I have written a VB.Net Windows Application using VS2003.Net under the 1.1.4322 framework. This application loads a lot of data on startup (about 4MB, taking about 30 seconds) and that data needs to be readily available to the user, so I wrote it to sit in the system tray, using the NotifyIcon and ContextMenu objects.Everything is working fine, even the menu (I have simple options like 'Update' to update the datasets, 'Show' to show the form, 'Hide' to hide the form, and 'Close' to actually close the application).However, when the user attempts to do a Windows 'Log Off', 'Restart', or 'Shutdown', the system refuses.After shutting down every application on the users' computers EXCEPT for my application, the system still refuses to perform the LogOff, Restart, or Shutdown event.In fact, the application I wrote does not even perform it's 'Dispose' method.[code]Therefore, I am convinced that it is my application interrupting the system's process somehow.I have written other Windows Applications WITHOUT the context menu / notify icon objects (apps that don't sit in the system tray) and this problem does not occur.I have also written other applications that DO sit in the system tray, and the same problem occurrs.To summarize this problem: I believe there is something wrong with the way my application is responding to the System events 'Log Off', 'Shutdown', and 'Restart'.This is occurring on Windows XP SP2 computers (has not been tested elsewhere).Could someone explain to me why this happens?? Is there some workaround or some known bug in .Net that causes System Tray applications to interact differently with Windows system events than expected??
i want to be able to open IE/FireFox/Google and the like, and when i right click in a text box on a webpage i can click my email so that it places the email address straight into the box instead of typing it in. in other words i want to integrate a ContextMenu into the already system context menu. I think i am shooting above my belt but just need a start as to where to start. Ie: Service, Background Worker, Windows Form?
I am working with Wizard generated dataset. I added this code to a button for update:
transDetailTA.Update(abars.TransactionDetails)
I'm making the changes to a datagridview bound to one of the tables in my dataset and when I make changes and click the update button i receive the following message even though I'm the only one using the DB (I'm working on a laptop):
System.Data.DBConcurrencyException was unhandled Message="Concurrency violation: the UpdateCommand affected 0 of the expected 1 records." RowCount=1
Im using datagridview in asp.net.When im trying to add row using footer template in find error coming up.I have corrected syntax and column is in Database.
Im using datagridview in asp.net.When im trying to add row using footer template in find error coming up.I have corrected syntax and column is in Database.
i have a application windows based created in vb.net that contains crystal reports and access .accdb files. to be honest i have tried to publish this app for 11 times and still there to be some problem. the application will install but it cannot run. it shows an error like this.
Problem signature: Problem Event Name:CLR20r3 Problem Signature 01:utm point of sale software.exe
When I am trying to connect to database from VB.net, I am getting error. This is my code. Public g_Conn As new SqlClient.SqlConnection With g_Conn .ConnectionString = "user id=sa ;data source= CCTSRV8; " & _ "persist security info=True; " & _ "initial catalog=pubs ;password=mrwizard" .Open() End With I am getting system.data.sqlclient.sqlclientpermission error.
I've been trying to highlight a search result in DataTable. First, I loop through rows of DataTable and call a function to look for a matched keyword to highlight those words, then update DataTable row with a new string with highlighted keywords.I bind the DataTable dtResult to the DataList. It worked fine until I added this code block to SearchDemo function to highlight the keyword :
For i = 0 To dtResult.Rows.Count - 1 Step 1 Dim strTemp As String = dtResult.Rows(i).ToString strVerse = blHelper.Highlight(s, strTemp)
