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Help Creating a function to change SQL Field Values

Posted on 2007-11-18
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Last Modified: 2011-09-20
Hi all

Im looking for some help in creating a function to allow me to hardcode updates into SQL. The attached code will allow me to open the DB and search the fields however its been a while since ive programmed in vb and am moving to .net so hence the .field("Name") = is a bit out of date..  :)

Any help would be great

Many Thanks
Steve

Code in use __________________________________

       Dim SQL As String = "SELECT * FROM USERINFO WHERE USERNAME = '" & txtUsername.Text & "' AND PASSWORD  = '" & CryptPass & "'"

        Dim sqlReader As SqlDataReader = CCDBC.CCDBC.RetrieveData(SQL)
 

        If sqlReader.Read Then

            With sqlReader

                MsgBox(.GetValue(1) & "   " & .GetValue(2) & "   " & .GetValue(3))

            End With

            Me.Close()

        Else

            MsgBox("Invalid Username or Password entered", MsgBoxStyle.Exclamation)

        End If

        sqlReader.Close()

        sqlReader = Nothing
 

__________________________________________________
 
 
 
 

Public Shared Function GetConnection() As SqlClient.SqlConnection

        Dim conn As SqlClient.SqlConnection

        Dim strConn As String = "Data Source=SQLEXPRESS;Initial Catalog=CC;Integrated Security=True;Pooling=False"
 

        conn = New SqlClient.SqlConnection(strConn)

        Try

            conn.Open()

        Catch ex As SqlClient.SqlException

            Console.WriteLine("SQL Server ERROR: " & ex.Message & " in " & ex.StackTrace)
 

        Catch ex As Exception

            Console.WriteLine("ERROR opening connection: " & ex.Message)

        End Try

        GetConnection = conn

    End Function
 

    Public Shared Function RetrieveData(ByVal query As String) As SqlClient.SqlDataReader

        Dim rdr As SqlClient.SqlDataReader

        Dim conn As SqlClient.SqlConnection = GetConnection()

        Try

            Dim cmd As SqlClient.SqlCommand = New SqlClient.SqlCommand(query, conn)

            ''CommandBehavior.CloseConnection closes the underlying connection 

            ''whenever the reader is closed

            rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection)

        Catch ex As SqlClient.SqlException

            Console.WriteLine("SQL Server ERROR: " & ex.Message & " in " & ex.StackTrace)

        Catch ex As Exception

            Console.WriteLine("ERROR retrieving data: " & ex.Message)

        End Try

        RetrieveData = rdr

    End Function

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Question by:Stephen Manderson
1 Comment
 
LVL 142

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 500 total points
ID: 20310503
please check out this tutorial:
http://webgraphics.web108.discountasp.net/HandH/AdapterUpdate.htm

it tells you to fill in a sqldataadapter, and define the UpdateCommand that will submit the sql update (or procedure) to save any changes done to the data inthe sqldataadapter...

hope this clarifies how to do things the .net way
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