Unable To Log All Errors To A SQL Database?
Jan 26, 2010
Okay, I've never used "THROW NEW EXCEPTION" before, and I'm having a hard time understanding it completely.
When a handled error occurs (in a try..catch block), what should I do?
I display a message to the user already in the catch block.
I want to be able to log all errors to a SQL database.
Previously, I would always write a method called LogError, pass the exception into the sub, and it would log it to a SQL database. I'm not sure if there's a built in function for this or not.This will tell the user that there is an error. If I put a call out to LogError(ex) above the dim d as new dlgexception line, then it could log it in the SQL server.
I just feel that I am not doing this the right way.And I am very confused about the THROW NEW EXCEPTION. Why would you ever ned to throw an exception? Wouldn't you just handle it? What is the point?And, why would you throw an error inside of a Catch statement? I seen this done in examples. If the error was already thrown (which sends it to the Catch block), why would you throw it a second time?
View 16 Replies
ADVERTISEMENT
Oct 11, 2011
I have developed a windows forms application in vb.net 4 which connects to a MSSQL database. I have used the built-in tools to add the data source, data connection and data set. (Data->add new data source-> etc.) The application is installed on staff laptops which may or may not have network connectivity and may or may not be able to access the server on which the database is held. Obviously this is causing unhandled errors when the program starts and tries to make a connection to the database. (using windows credentials) Does anyone know where in the code the connection is made so I can go in and add some error handling? Or any settings I can change to get visual studio to handle the errors nicely?
View 2 Replies
Jun 14, 2011
I wrote simple update/insert statements that are returning a syntax error, what am I missing? The table name is notes, the field note is type memo, acaps is a double. update notes set note='why is there a syntax error' where acaps=12345
[Code]...
View 1 Replies
Jan 13, 2011
I have the following code to delete a row in an Access Database Table. It executes with no errors, but the row is not deleted.
Code:
Dim adpMasterRecipe As OleDb.OleDbDataAdapter
Dim dsMasterRecipe As New System.Data.DataSet
Dim iIndex As Integer[code].....
View 1 Replies
Jan 5, 2010
I'm having a problem converting a string to a datetime format. the string is depicting an hour, for example 08:00, but in the mysql database it stores that as 2008/00/00 00:00 any idea how to solve this?
[Code]
View 3 Replies
Jun 12, 2012
I must have inadvertly messed up my data connection but not sure how to fix it. when I check the table adapters I can view data but when I load the app I get these errors and no data loads, how can I look at this log and make sense of how to fix this?
************** Exception Text **************
System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Only one <configSections> element allowed per config file and if present must be the first child of the root <configuration> element. (C:BungeAppsBunge Post InstallerinDebugBunge Post Installer.exe.Config line 7)
[code]....
View 3 Replies
Sep 23, 2011
I have a .net application that uses customerrors web.config module to display meaningful messages for errors. It works without any issues for 500 errors/exceptions caused by non-ajax and ajax components (updatepanel). However, in a scenario where updatepanel's asynchronous request times out, there is no error raised at all. I was able to see the timeout in firebug and come up with a solution that would at least display the error message as an alert and then redirect the user to the 500 error page using javascript but it's not quite doing what the rest of the application does in case of an unhandled errors like these. I basically just want everything to go through "LogEvent" mechanism so based on the severity of the error, it does the necessary work.This 500 error page doesn't have anything in the Server.GetLastError() for these timeout scenarios. Is this an expected behaviour? Can it be changed so I do have access to these timeouts in Server.GetLastError() OR maybe just run this error through "LogEvent" mechanism? Is there a better/more graceful way to handle this issue?
Below is my code to give you an idea, not exactly what I have in my application but pretty close.
Web.Config
<customErrors mode="On" defaultRedirect="~/Errors/ErrorUnknown.aspx" redirectMode="ResponseRewrite">
<error statusCode="500" redirect="~/Errors/Error500.aspx" />
</customErrors>
[code]....
View 1 Replies
Oct 23, 2009
Getting some errors with a loop. It's a log-in app that has username, passwords & account type stored in a SqlCe database. I would like it to sync with a larger database for updates that has not been made so i left it out but I have started to make a loop that would connect it to the larger DB and if connection failed would try a set number of times before stopping the program. I'm coding this project with Visual Studio 08 pro
Dim conndb As New SqlCeConnection("Data Source = |DataDirectory|\Mydb.sdf")
Dim x, y, z As Double
x = 1
y = x + 1
z = 5
[CODE]...
View 1 Replies
Feb 13, 2009
how a database software is developed? i tried using sql server, the weak thing is that.....the database software is unable to run in a pc that is not installed sql server program. using others software instead of sql? or is there any other way that possible to let my database program to access database data without required sql installed.
View 1 Replies
Feb 18, 2011
I am a beginer with VB.net and I am trying to figure out what I am doing wrong.
[code]...
View 3 Replies
Feb 27, 2010
When I click "Connect to Database" I get this error..
View 1 Replies
Jan 10, 2011
I am trying to update my database and keep getting the same error:
OleDbException was unhandled
Syntax error in UPDATE statement.
Here's my
The program is connected to a database which contains 5 tables, one of which is ApplicationTable and contains two fields.
Dim da As OleDb.OleDbDataAdapter
Dim con As New OleDb.OleDbConnection
Dim comm As New OleDb.OleDbCommand
Dim ds As New DataSet
Dim sql, Query, text, text2 As String
[Code] .....
Resolved: Changed field name "Password" to something else.
View 4 Replies
Sep 30, 2011
Here my proj details
details:
application:vb.net 2008
database:ms access2007
32bit OS vista
actually what the problem is my project is working fine with windows vista in all the systems my other teams members are using 64 bit windows7 in windows 7 projects runs but couldn;t able to connect with database not able to save the data.
i want to use the project in windows 7
View 2 Replies
Jun 1, 2012
I have a gridview with four template fields that I need to be able to put info into to save to the database. When I hit the edit button and my columns change into edit mode I can enter information just fine. But when I try to loop through the control to get the information it doesn't pick anything up?
Private Sub gvOLIAdj_RowEditing(sender As Object, e As System.Web.UI.WebControls.GridViewEditEventArgs) Handles gvOLIAdjst.RowEditing
gvOLIAdjst.EditIndex = e.NewEditIndex
BindData()
End Sub
Here is the update event that I have so far... any ideas? Am I just not doing this right?
Private Sub gvOLIAdj_RowUpdating(sender As Object, e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles gvOLIAdjst.RowUpdating
Dim dts As DataTable = DirectCast(Session("BudgetsTable"), DataTable)
Dim row As GridViewRow = gvOLIAdjst.Rows(e.RowIndex)
[Code]...
View 2 Replies
Jun 6, 2009
First off this isn't a homework assignment I am doing, I'm making a customer database program for my husband.The problem I am having is that I need to be able to access a database without the need of an sql server.
[Code]...
it is a GUI application, and the only book i have on the subject deals mostly with console applications. I also added the data source to the project in visual studio. please tell me what I am doing wrong and how to correct it?
View 6 Replies
Apr 24, 2012
I have created a program to log company and programming information for a radio station, on the test machine it works perfectly when deployed the program cannot read from the database. It creates it fine and can write to it without complaint but when opening the program which is supposed to read information from the database the program crashes, if i ask it to continue then it will bring up the form but nothing which is supposed to be populated by access to the database is populated.ed onto the deployment machine and this does not solve the problem.
this is code relating to the issue:frmMain:
' == frmMain_Load ==
' ==================
[code]....
View 6 Replies
Nov 7, 2010
check the VB behind code for any syntax errors.
Unable to add new rows of data to a database using the DataGrid control.
Compilation Error message is located at [URL] View snap shot images of each line error at [URL]
The VB code behind reads (revision 1.3):
</script>
<body style="font: 10pt verdana">
<form runat="server">
[Code].....
View 2 Replies
May 17, 2012
I have written a new app in VB.net as a front end to a mySQL database held on a PC on the LAN running Windows XP. This worked fine for a while. The PC running the mySQL server started locking up (XP errors, not mySQL errors according to the event logs), so I decided to have a go installing Ubuntu to run the mySQL server to see if that was more stable.Ubuntu 11.10 is now installed, and mysql server is also running. I have imported the old sql database files and the mySQL workbench shows all tables are imported successfully.
HOWEVER, I cannot get my VB application to connect to the database now it resides on Ubuntu - just returns "Unable to connect to any of the specified MySQL hosts" when i try to open a connection. I am fairly new to Ubuntu and MySQL, and don't know if the fault lies with the O/S (a firewall config problem perhaps?) or if I need to do something different with mySQL.I can ping the Ubuntu pc from the client pc and vice versa.I have used ufw to open port 3306 on the server The ufw logs do not show any errors when I try to connect from the client pc, so I don't think it's a firewall problem (but could be wrong). I thought it may be something to do with the usernames I use in the connection string, but when I change these (deliberately use the wrong password for example) I get the same message, rather than a username/password error Is anyone else using a client PC running Windows (W7 or XP) to connect to a mySQL database running on a Ubuntu server?
View 8 Replies
Feb 20, 2012
why when i press the delete button the code does not delete items and if i add items the items are not added from the database.
Public Class Form1
Dim inc As Integer
Dim MaxRows As Integer
Dim con As New OleDb.OleDbConnection
[code]....
View 5 Replies
Oct 20, 2011
I cannot able to delete the database file. File also not in use.[code]...
View 3 Replies
Jun 2, 2009
I developing a VB.net application and I'm unable to delete the record from. But my code only deletes the record from the datagridview and it is not being deleted in the database.
I'm using SQL Server Express 2008 and the table name is Admin_Table. The fields are :
Field Name Data Type
-------------- --------------
admin_ID int
admin_Name varchar
[Code]...
View 1 Replies
Mar 5, 2009
I am connected to a mdb using OleDb. The Connection code is :
' GET CONNECTED TO DB
Try' Open a connection to the database.cn = New OleDb.OleDbConnection(strConnection)cn.Open()
' Load Data Adapteradapter = New OleDb.OleDbDataAdapter(strSelect, strConnection)
' Create Auto generated Insert, Update, Delete cmds for Tableautogen = New OleDb.OleDbCommandBuilder(adapter)
[Code] .....
Add & Update are working perfectly, but delete doesn't update in the db. While application is running it shows that data is deleted, but when I run again, I see the same data, so its not physically deleting from the db. Add & Update both are working perfectly even after re-running.Can anyone tell me where am I going wrong in delete part. The row is also proeprly selected. No exceptions, yet why not deleting physically.
View 2 Replies
Oct 23, 2011
why i am unable to display datas from database.
If mConnection Is Nothing Then mConnection = New Odbc.OdbcConnection
' check if the connection is already open
If mConnection.State = ConnectionState.Open Then mConnection.Close()
[Code].....
View 4 Replies
Feb 24, 2011
I am using SQLite.When I try to insert data into the tables I get the following: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 information.I am using ADO.NET 2.0 Provider for SQLite?
View 1 Replies
May 13, 2011
I'm sure that I'm missing something really basic here, but I'm just not seeing it. I have the following
Public Sub InsertRow()
Dim employeenumber As String = employeeListBox.SelectedValue
Dim headsetnumber As String = headsetnumberText.Text
[code]....
and when I put a break point on the command.ExecuteNonQuery line, and then step through that, I'm never displayed the thankyouLabel.Text nor is my data being inserted into the database.
View 3 Replies
Jan 24, 2010
I have an application which I am trying out on machines without mysql. The app runs fine on my local host however when I try to use the application on another machine I am getting the following error:
Access denied for user 'root'@'localhost (using password: YES)
Then I get a .net framework error
System.NullReferenceException: Object reference not set to an instance of an object.
I thought I had exported the DB but I was left with a mysql file which I placed in the bin directory.
View 2 Replies
Jul 26, 2011
I would like to restore MySQL database , but it does not restore anything ,
Shell("C:Program FilesMySQLMySQL Server 5.1inmysql.exe --user=root --password=123 --host=localhost --databases test < C:.sql")
View 4 Replies
Feb 6, 2009
My problem is probably ignorance as to how the DGV works, anyway, the problem.I have a bound datagridview which is used to collect user input. Data for 3 of the 7 fields is entered by looping through the rows and progmatically entering common data anfter a 'Save' Button is pressed:
For I = 0 To DG1.RowCount - 2DG1.Rows(I).Cells(4).Value = TextBox1.Text 'OperatorDG1.Rows(I).Cells(5).Value = TextBox2.Text 'DateDG1.Rows(I).Cells(6).Value = TextBox3.Text 'Time NextDG1.Update Prior to this loop I delete the last unused row if its not a new row:
DG1.CurrentCell = DG1.Item(0, DG1.RowCount - 2)If DG1.CurrentCell.Value.ToString = "" ThenDG1.Rows.RemoveAt(DG1.RowCount - 2)DG1.Update()End If
At this point the DGV looks the way it should...All fields completed correctly and no un used ro except for the new row.
After saving :Me.ItemTableTableAdapter.Update(Me.StockMoveDataSet.ItemTable)The 'Operator', 'Date', and 'Time' are not saved to the database for the first row only I have tried EndEdit, Update, refocussing the currentcell/row all to no avail.
View 2 Replies
Mar 13, 2012
I need a simple program which add,edit,save,delete data from database in vb.net. I have tried dataset or sqlcommandbuilder but both are not working. look at my code I have used with sqlcommandbuilder, it is not saving anything in database. provide simplest method to save data in database from dataset or direct from textbox. In this vb.net is not showing any error but not saving
'set up a connection string'
Dim connectionstring As String
connectionstring = "Data Source=|DataDirectory|inventorymanage.sdf;Password='XXX'"
Dim sqlquery As String = "SELECT * FROM ledger"
[Code].....
View 1 Replies
Apr 11, 2010
I created a database in access 2007, linked it to my project in visual studio 2008 (vb). When I enter some data using the UI, it does not save it in the database, and it's gone as soon as I run the program again. I dragged the textboxes from the datasource panel, onto the UI..
this is the code that was automatically generated by vs for the save button:
Private Sub StaffBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StaffBindingNavigatorSaveItem.Click
Me.Validate()
Me.StaffBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.GartisDataSet)
End Sub
View 2 Replies
