Solved

How do I update a sql database with data from a text box on a form?

Posted on 2008-10-12
7
403 Views
Last Modified: 2012-05-05
I'm new to VB.Net and I need to know how to insert a new record in a sql table from data in two text boxes on a form called txtFirstName and txtLastName. Also the sql table has a CustID field which is the index, it's not auto generated so I need to increment it by one when a record is inserted. Thank you for your help.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
 
        Dim dbConnection As New SqlConnection("Data Source=192.168.0.4,1433;Network Library=DBMSSOCN;Initial Catalog=TestData;User ID=sa;Password=password;")
 
        Dim queryString As String = "SELECT * FROM dbo.Patient"
 
        Dim dataAdapter As SqlDataAdapter = New SqlDataAdapter( _
          queryString, dbConnection)
 
        dbConnection.Open()
 
        Dim tblCustomer As DataSet = New DataSet
        dataAdapter.Fill(tblCustomer, "Customer")
 
        MISSING CODE GOES HERE
 
 
        dbConnection.Close()
 
 
 
 
    End Sub

Open in new window

0
Comment
Question by:rfgraham
  • 3
  • 2
  • 2
7 Comments
 
LVL 4

Expert Comment

by:sijishJohn
ID: 22700292
use this to increment the CustID field

select Max(CustID)+1 from <tablename>

Refer this link

http://www.java2s.com/Code/ASP/ADO.net-Database/GenerateSQLinsertcommandVBnet.htm
0
 

Author Comment

by:rfgraham
ID: 22700389
sijishJohn,

I made a change in my sql db table to use Identity, which is for incrementing my ID field when a record is added.

I'm connecting to a sql db on another computer so I'm using:
"Imports System.Data.SqlClient" in the General Declarations of my code window.
0
 
LVL 48

Expert Comment

by:jpaulino
ID: 22700882
>>I made a change in my sql db table to use Identity, which is for incrementing my ID field when a record is added.

That way you only need to insert the fields ... don't use the CustID in the Transact SQL command.
The example that sijishJohn has showed you is for Access and for SQL is a little (no to much) different.
Check this example that I have posted:
http://www.experts-exchange.com/Programming/Languages/.NET/Visual_Basic.NET/Q_23349839.html 
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 4

Expert Comment

by:sijishJohn
ID: 22700904
Ok then this will be enough...
Dim conn As New SqlConnection("Data Source=192.168.0.4,1433;Network Library=DBMSSOCN;Initial Catalog=TestData;User ID=sa;Password=password;")
        conn.Open()
        Dim strSQL As String = "INSERT INTO <table name> (FirsName, LastName) VALUES (?, ?)"
 
        Dim dbComm As New SqlCommand(strSQL, conn)
        dbComm.Parameters.Add("FirstName", SqlDbType.VarChar)
        dbComm.Parameters.Add("LastName", SqlDbType.VarChar)
 
        dbComm.Parameters("FirstName").Value = txtFirstName.Text
        dbComm.Parameters("LastName").Value = txtLastName.Text
 
        dbComm.ExecuteNonQuery()
        conn.Close()

Open in new window

0
 
LVL 4

Accepted Solution

by:
sijishJohn earned 500 total points
ID: 22701051
Oops...
what jpaulino said was right..that was not the sql code..sorry to mislead you..

Dim conn As New SqlConnection("Data Source=192.168.0.4,1433;Network Library=DBMSSOCN;Initial Catalog=TestData;User ID=sa;Password=password;")
        conn.Open()
        Dim strSQL As String = "INSERT INTO <Your Table Name> (<Field1>, <field2>) VALUES (@First, @Last)"
 
        Dim dbComm As New SqlCommand(strSQL, conn)
        dbComm.Parameters.Add("@First", SqlDbType.VarChar)
        dbComm.Parameters.Add("@Last", SqlDbType.VarChar)
 
        dbComm.Parameters("@First").Value = txtFirstName.Text
        dbComm.Parameters("@Last").Value = txtLastName.Text
 
        dbComm.ExecuteNonQuery()
        conn.Close()

Open in new window

0
 

Author Comment

by:rfgraham
ID: 22749975
Thanks for you help but I have a related question, maybe you'll know the answer to this one.
http://www.experts-exchange.com/Programming/Languages/.NET/Q_23826936.html
0
 
LVL 48

Expert Comment

by:jpaulino
ID: 22749989
Did you looked to my example ? Maybe not!
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The ECB site provides FX rates for major currencies since its inception in 1999 in the form of an XML feed. The files have the following format (reducted for brevity) (CODE) There are three files available HERE (http://www.ecb.europa.eu/stats/exch…
This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …

825 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question