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Old 09-26-2008
Peon
 
Join Date: Jun 2008
Posts: 8
Default write a vb.net program to delete a record from oracle database taking...

...input from inputbox ? I am a student studying MCA .I am doing a vb.net project .
I need to write a vb.net program to delete a record from oracle database taking input from a inputbox .The database in ORACLE has TWO fields - ID,Name.I want to delete a row in ORACLE Database based on the ID number TAKEN through InputBox from user in vb.net.
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  #2 (permalink)  
Old 09-26-2008
Peon
 
Join Date: Sep 2008
Posts: 1
Default

Hi,

To delete a record, the SQL query is
DELETE FROM <TableName> where ID = 'IDno'

Follow the steps:
### Importing the Namespaces
Imports System
Imports Oracle.DataAccess.Client

###Step 1 The first step is to create an OracleConnection object to connect to the Oracle database and then open the connection.

Dim myOracleConnection As New OracleConnection( _
"User Id=store;Password=store;Data Source=ORCL")
myOracleConnection.Open()

###Step2 The second step is to create an OracleTransaction object and start the transaction by calling the BeginTransaction() method of the OracleConnection object.

Dim myOracleTransaction As OracleTransaction = _
myOracleConnection.BeginTransaction()

###Step3 The third step is to create an OracleCommand object to store a SQL statement.

Dim myOracleCommand As OracleCommand =
myOracleConnection.CreateCommand

###Step 4 The fourth step is to set the CommandText property of the OracleCommand object to the DELETE statement that deletes a row from the table.

myOracleCommand.CommandText = _
"delete from table where id = ' " & txtID.txt & "'"

Step 5

The fifth step is to run the DELETE statement using the ExecuteNonQuery() method of the OracleCommand object.

Dim Delete = MessageBox.Show("Are You Sure to Delete", "Query", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
If (Delete = vbYes) Then
myOracleCommand.ExecuteNonQuery()
MessageBox.Show("Record Deleted successfully!", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information)
End If

Step 6

The eighth step is to commit the transaction in the database using the Commit() method of the OracleTransaction object.
In VB.NET:

myOracleTransaction.Commit()

Step 7

The ninth step is to close the OracleConnection object using the Close() method.

myOracleConnection.Close()

MORE REFERENCE
-------------------------------
Try the following links
http://www.startvbdotnet.com/ado/oracle.aspx

http://answers.yahoo.com/question/index?qid=20080523192932AAiqSld


regards
Sarwan
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