Unable To Add A New Record To Database
Feb 18, 2011I am a beginer with VB.net and I am trying to figure out what I am doing wrong.
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I am a beginer with VB.net and I am trying to figure out what I am doing wrong.
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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
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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)
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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.
I want to insert records in the database but before it inserts, it must first check the database whether the value being inserted already exists. Now my problem is that I am unable to insert into the database even though the value still does not exist.
Here's my code:
Dim check As New SqlCommand
Dim sqlcheck As String = "SELECT SerialNumber FROM EquipmentDetail WHERE SerialNumber = '" & TextBox1.Text & "'"
connection.Open()
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when i try to delete a row . always restricting to delete on certain Table table.( DELETE ERROR tble_tombstone) message comes up.
View 8 RepliesI am trying to check a record in database before inerting a new record here is my code but problem is when i enter a names first alphabet it imediatly populate massage. i want to check it after entering whole name
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Try
Dim cnString As String = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" &
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I have a problem with my program, and it's really bad because I need to burn it to disk within 12 hours and I can't get it to work: If I create a record, add information to it and click on Next Record, the ID, Status and Notes boxes content will change but the rest of the controls contents are carried over to the next record and I don't know why or how. It was working perfectly but now it stopped and I never done anything.
View 8 RepliesHere is the code that I am using, every time i run it i get an error message
Error Message: Syntax error (missing operator) in query expression '(((? = 1 AND BlankP IS NULL) OR (BlankP = ?)) AND (StudentID = ?) AND ((? = 1 AND Studentame IS NULL) OR (Studentame = ?)) AND ((? = 1 AND 1t IS NULL) OR (1t = ?)) AND ((? = 1 AND 2t IS NULL) OR (2t = ?)) AND ((? = 1 AND 3t IS NULL) OR (3t = ?)) AND ((? ='.[code.....
I have records in a database. Each record has a Picture path in it eg. "C:\Pics\Image1.jpg". I would like to display a record from my database and also the picture for that record, in a .rdlc report in vb .net 2008. i have succeded in displaying the record but just can't get the picture to show. I am using an Imagebox in the report.
View 2 RepliesI have a access database with these columns. USER_ID,COUNT,TIMES
Let say the current record is this:
USER_ID,COUNT,TIMES
STEVE20,24,1.5
Now I want to updated the current count record and times, but before updating I want the old record to be added to the new record. What should be my query?
I have the following
Private ReportAdapter As OleDbDataAdapter 'used for controlling database
Private ReportTable As DataTable
Private ReportManager As CurrencyManager
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how to view the next record and previous record in the database.? just like in the picture below.? what condition should we use.?
View 8 RepliesI hav a web service which pull records from a database and I am hosting these services in IIS which works fine but I am trying to retrieve the record and display the record in a listbox displaying the time field as the text for that record.I have created the following function
public sub get_data()
dim dt as new data.dataTable
dim service as ws webservice.webservice
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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 RepliesWhen I click "Connect to Database" I get this error..
View 1 RepliesOkay, 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?
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
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Resolved: Changed field name "Password" to something else.
I am trying to add a new record to a database using VB.net. I have used code for one table in the database which worked and then copied and pasted it and changed the column names to the ones in the other table and then I got an error saying that the insert into statement was wrong even though I am using a comand builder. [code]
View 4 RepliesI currently have a Microsoft Access database which is being accessed through an ASP .NET front end. I am trying to add a row to a table, but this doesn't appear to be working, the code I am using is shown below.[code]....
View 1 RepliesI've been trying to add a record to an MDB Database, but for some reason all my code runs fine, but when I check my database no records have been added, I'm doing it on on gotfocus event to make data entry easier with a bar code scanner?
Public Class Form1
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
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There are 12 columns in the table, and I need to update only 3-4 of them, the rest are autokeys I guess, or I need to update them at a later stage in my program...
"Stock, Date, GP, Scratch & UV" TextBox's
These contain the data which need to be added to the columns #4 - #8[code]...
I have problem that my code doesn't add record into the database i don't know why
View 1 RepliesI'm trying to get the last records in the database
my code doesn't give an error but also doesn't do what it supposed to[code]...
I want to get some value from some table in access database
View 3 RepliesGet the last record from a Microsoft SQL database table using ASP.net (VB) onto a web form.
View 2 RepliesHere 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
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)
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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.
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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?
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 ==
' ==================
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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].....