Exception On ExecuteNonQuery Method About Unsuccessful Value Convertion
Dec 10, 2009
i am using OleDbCommand.ExecuteNonQuery() to insert data into the database: [code]And there is a conversion exception that only shows up in the last line: error converting datatype varchar to smallint..I'd like to know if it's the normal behavior, and how do i know where the conversion problem occurs.[code]i've found this line through commenting every line and uncommenting some, this one gives me the above said exception. bjNFe.idMunFato Gerador is a string and gives me "error converting datatype varchar to smallint" too
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Feb 3, 2009
(using vb.net) On our intranet site we have an app that loads customer or vendor information and then allows the users to edit info and add/update/delete contacts. I'm not sure what really changed to this program lately, but I keep getting this error:
Method not found: 'Int16 DBLayer.DBTools.ExecuteNonQuery(System.String, DB)'.
This occurs when i try editing any customer info and the vendor contacts, but the program works when I try editing the vendor info/addy. Here's the program code. There's a seperate program on our webserver that contains the classes used. Here's the main code that calls the classes:
TO ADD CONTACT
M2MInterface.M2M.Customers.AddContact(Session("CustVendID"), txtFName.Text.ToUpper.Trim, txtLName.Text.ToUpper.Trim, Tools.RemovePhoneNumberFormat(Phone), Tools.RemovePhoneNumberFormat(Fax), txtEMail.Text, txtNotes.Text, False)
TO UPDATE CONTACT
[code].....
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Mar 23, 2010
Is it possible to collect name of method, line, file etc in which exception occurred for logging purposes? I have heard its possible using System.Diagnostics.StackTrace but not sure how.
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Oct 18, 2010
I'm currently working on trying to improve the amount and quality of exception handling I do in my code and one thing that I am trying to figure out how to do is retry a method if it fails.
The an example of the circumstances when I would want to do this is for SqlExceptions. One of our clients has a poor network that means that occasionally connecting to SQL Server times out, but if we try again immediately afterwards it will work perfectly.While I could possibly call the method from itself, I would rather not do that just in case there is a permanent error and then we'll get into a infinite loop, which is not what we want.
I was wondering whether anyone has any advice on how may be a good way of going about dealing with problems like this.[cod]e...
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Aug 16, 2011
Is it possible to convert .bat to .exe or .com through vb using a reference dll or anything?
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Aug 9, 2010
I want to force a calling method to implement exception handling.
Java forces a calling method to implement exception handling where it calls another method that thorws an exception.
Does VB.Net have the same mechanism?
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Jun 20, 2009
im developing a way of calculationg differentil equations in VB 2008 using the 4th order ruge-kutta method. I pursched a book by Jack Xu called "Practical WPF Graphics programming".
[Code]...
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Jan 7, 2010
I have found a C# code and wanted to convert it into VB, but it seems VB is not supported.Here is the code structure: private static IntPtr fnc1(int nCode, IntPtr wParam, IntPtr lParam){}private delegate IntPtr fnc2(int nCode, IntPtr wParam, IntPtr lParam);private static fnc2 var1 = fnc1;
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Oct 14, 2010
I'm having a hard time trying to change the format a date time that comes from the atabase.I convert that to a string so i can split date and time into different values.Once i have that, i would like to format the time with the 24 Hour format, instead of the 12 Hour format that i'm getting.
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Aug 4, 2011
CDate("22/07/2010")
Conversion from string "26/07/2010" to type 'Date' is not valid.
What is wrong on this
It was working fine on older versions...!
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Jul 28, 2009
I have a windows form that gets data from a scale via the serial port. Since I need the operator to be able to cancel the process I do the get data process on a second thread. The data collection process gets multiple readings from the scale one at a time. The form has a label that needs to be updated with information specific to each reading.
I call the method to get the data from the scale with this code.
Dim ad As New readALine(AddressOf thisScale.readALine)
Dim ac As New AsyncCallback(AddressOf Me.GetDataCallback)
Dim iar As IAsyncResult = ad.BeginInvoke("", ac, ad)
The delegate for the readALine method is defined in the UI code.
Delegate Function readALine(ByVal toSend As String) As String
The GetDataCallback method:
Private Sub GetDataCallback(ByVal ia As IAsyncResult)
.
.
.
lblInstructions.Text = _thisMeasure.dt.Rows(_currRow - 1).Item("cnt") & ":"
lblInstructions.Refresh()
.
.
.
End Sub
I get the exception on the "lblInstructions.Text =" statement. I thought the GetDataCallback method was part of the UI thread so don't understand why I'm getting the exception. I know this could probably be rewritten using a BackgroundWorker and it's appropriate events but for now would like to understand why this isn't working as expected. The application was written originally in VS2003 and just recently upgraded to VS2008.
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Jan 13, 2011
I am trying to implement a solution for updating form controls without using a delegate.
Imports System.ComponentModel
Imports System.Runtime.CompilerServices
Public Module MyInvoke
[code]....
I get a cross threading error as though i didnt even use this method:Cross-thread operation not valid: Control 'ComboBox1' accessed from a thread other than the thread it was created on.
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Jul 12, 2010
I am using .net 2.0 and I am getting an exception of system is out of memory. My existing function takes datatable as input parameter which contains little bit large data (eg. more than 35000 rows) and in that function I am appending some xml node data and atlast I am returning the stringbuilder as a object.
[Code]...
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Feb 1, 2010
is there any perfect tool of converting C# and lambda expressions into vb.net code.
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May 19, 2010
I am facing an amazing problem in my application. On my Developement server when I am running my application, then there is one function where I am trying to put whole stringbuilder contents in a string object. This Function is used for paging the reports.For that I am using a method of Stringbuilder.tostring() and when I chek the value of this statement (stringbuilder.tostring()) it shows no such interface is supported, which later on throws exception of system is out of memory. Here i am using .net 2.0 framework and sql server 2005 database.But when I run the application on stagging server then there is no such exception thrown.[code]
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Sep 15, 2009
I am attempting to fully convert my Java/VB.Net application (That's actually working perfectly fine, however due to the referencing the jar files using IKVM the application is almost 27 MB big. For just a few classes this is extrememly huge.)I want to converted it strickly to VB.Net. I have 5 Javax.net.ssl references that I'm trying to figure out the VB.Net equivalent of. It seems to me that is should be in the System.Net.Security however I'm unsure as to the correct ones.
Here's an example of one of them: Imports SSLSocket = javax.net.ssl.SSLSocket
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Jul 8, 2009
i am scraping title of webpage. i am using webclient class to get its html source. the true title of webpage is this which appear on browser:
"La r�volution"
but when i extract it from html source using webclient class i get following string.
"La révolution du sourire juste"
i think its something related to string conversion. so any one help me how to convert this "La révolution du sourire juste" to "La r�volution"?
following info on webpage might give you some clue which is content type.
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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Jul 8, 2009
I am scraping title of webpage. i am using webclient class to get its html source. the true title of webpage is this which apprear on browser "La rvolution" but when i extract it from html source using webclient class i get following string. "La rvolution du sourire juste"
I think its something related to string conversion. how to convert this "La rvolution du sourire juste" to "La rvolution"?
Following info on webpage might give you some clue which is content type. " <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />"
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May 8, 2009
It is possible to catch an exception and throw a new exception which wraps the first exception as an inner exception: [URL] Also, if I call a function and it throws a certain error, but I catch it, will the calling code's catch handler execute? If so, and it is of a higher exception type, is this not wrapping the exception? eg I can throw exception ex of type IndexOutOfRange, log it but rethrow, catch a higher up exception and do something, or I can throw a new exception and wrap an inner exception like:
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Oct 19, 2010
Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
[Code]....
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Oct 16, 2010
I've just upgraded a project to .net 4.0, I'm getting an odd error using ExecuteNonQuery: Errors: {"Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration infor
Dim xServer As Server = New Server(SQLServer)
Dim db As New Database(xServer, Database)
db = xServer.Databases(Database)
Dim xUser As New User(db, LoginName)
xUser.UserType = UserType.SqlLogin
[Code]...
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Apr 15, 2012
I have a program where a user can update their Password by Entering their old password in a textbox, and entering their new password in a separate textbox.
An update query then updates the database with the new password.
CODE:
However, everytime the code gets to cmd.ExecuteNonQuery(), it throws up an error saying that there is a syntax error in the Update query. However, If I use this query in Microsoft Access, it works fine so the Update query itself is written correctly. What could be wrong?
Note: I am using an UPDATE query in another piece of code within the same Sub routine and it works there. Its something about this query.
Note Again: If I change the Update query to UPDATE Users SET EMAIL = '" & tbPassword.Text & "' WHERE userID = " & Row.Item(0)" it works. Something about Password that throws that error.
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Sep 10, 2010
Partial Public Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles
[code]....
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Nov 30, 2009
Dim cmd As New SqlCommand("insert into fiche values('" & Me.TextBox1.Text & "')", connex)[code]...
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Jun 9, 2011
Is there any way that i can be able to get the ExecutenonQuery to Execute faster. Am using it to run mysql queries that have joins from diffrent tables. As I have come to notice, the user has to wait a while before the statement ExecutenonQuery can be completely executed.. is there any way that I can get it to execute faster?
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Oct 8, 2009
I'm trying to execute a SQL command, but I just can't find out why this is not working.This is how I defined the "execute" function in my class named "clsSQL":
[Code]...
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Oct 22, 2009
I have the following query:
SELECT Inventory.Inventory_Id, Inventory.Inventory_description, Inventory.Inventory_stock_count, nz((SELECT Sum(Order.item_qty) AS SumOfitem_qty
FROM [Order]
WHERE Order.From_date<=Date() AND (Order.To_date)>=Date()
AND Order.Item_ID='I' & Inventory.Inventory_Id),0) AS CurrentlyOut, [Inventory_stock_count]-Nz((SELECT Sum(Order.item_qty) AS SumOfitem_qty
[Code]...
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Nov 19, 2011
can i do ( ExecuteNonQuery within the loop of a datareader ) in vb.net please help me with example
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May 25, 2010
I have this generic routine that I wrote that takes a list of sql strings and executes them against the database. Is there any way I can make this work faster? Typically it'll see maybe 200 inserts or deletes or updates at a time. Sometimes there is a mixture of updates, inserts and deletes. Would it be a good idea to separate the queries by type (i.e. group inserts together, then updates and then deletes)?I am running this against an ms access database and using vb.net 2005.
Public Function ExecuteNonQuery(ByVal sql As List(Of String), ByVal dbConnection as String) As Integer
If sql Is Nothing OrElse sql.Count = 0 Then Return 0
[code].....
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Aug 29, 2011
In order to check if specific user is db_owner, i excute the following query:
"select is_rolemember('db_owner', '" & p_userName & "')"
using the SqlCommand ExecuteNonQuery method.How do I get the query result?
Here is my code:
Dim com As SqlCommand = New SqlCommand(sql, m_connection)
com.ExecuteNonQuery()
[code].....
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