update database from data grid view in vb.net - vb.net

Question

i have a data grid view, filled by data from database now i need to change the data and update database.
Private daVD As New OracleDataAdapter
Private cmdJV As New OracleCommandBuilder
Private dtVD As New DataTable()
Dim cmd As New OracleCommand("Select JV_CODE,JV_ACC_NAME,DEBIT,CREDIT From VOUCHER_DETAIL where VOUCHERNO =:Vno", sgcnn)
cmd.Parameters.Add("#Vno", OracleDbType.NVarchar2).Value = txtJVNo.Text.ToString.Trim
dtVD.Clear()
daVD = New OracleDataAdapter(cmd)
daVD.Fill(dtVD)
dgvAccDetail.AutoGenerateColumns = False
dgvAccDetail.DataSource = dtVD
If dtVD.Rows.Count > 0 Then
For i As Integer = 0 To dtVD.Rows.Count - 1
''Dim DataType() As String = myTableData.Rows(i).Item(1)
dgvAccDetail.Rows(i).Cells(0).Value = dtVD.Rows(i).Item("JV_CODE").ToString.Trim
dgvAccDetail.Rows(i).Cells(1).Value = dtVD.Rows(i).Item("JV_ACC_NAME").ToString.Trim
dgvAccDetail.Rows(i).Cells(2).Value = dtVD.Rows(i).Item("DEBIT").ToString.Trim
dgvAccDetail.Rows(i).Cells(3).Value = dtVD.Rows(i).Item("CREDIT").ToString.Trim
Next
End If
i tried many different ways to update the database table but not working
Try
cmdJV = New OracleCommandBuilder(da)
daJV.Update(ds, "VJ_Details")
ds.AcceptChanges()
MessageBox.Show(" The record has been updated.")
Catch ex As Exception
MsgBox(ex.Message)
End Try

Answer 1

I have never used Oracle, but this is how you could do it using SQL Server (there are actually several ways to push data from a DatGridView to a table in SQL Server).
Here is one option for you to try.
Imports System.Data.SqlClient
Public Class Form1
Dim connetionString As String
Dim connection As SqlConnection
Dim adapter As SqlDataAdapter
Dim cmdBuilder As SqlCommandBuilder
Dim ds As New DataSet
Dim changes As DataSet
Dim sql As String
Dim i As Int32
Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
connetionString = "Data Source=Server_Name\SQLEXPRESS;Initial Catalog=Test;Trusted_Connection=True;"
connection = New SqlConnection(connetionString)
sql = "Select * from Orders"
Try
connection.Open()
adapter = New SqlDataAdapter(Sql, connection)
adapter.Fill(ds)
DataGridView1.DataSource = ds.Tables(0)
connection.Close()
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Sub
Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
'NOTE: for this code to work, there must be a PK on the Table
Try
cmdBuilder = New SqlCommandBuilder(adapter)
changes = ds.GetChanges()
If changes IsNot Nothing Then
adapter.Update(changes)
End If
MsgBox("Changes Done")
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Sub
Private Sub DataGridView1_Click(sender As Object, e As EventArgs) Handles DataGridView1.Click
DataGridView1.DefaultCellStyle.SelectionBackColor = Color.Orange
End Sub
End Class
Here is one more option for you to consider.
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim tblReadCSV As New DataTable()
tblReadCSV.Columns.Add("FName")
tblReadCSV.Columns.Add("LName")
tblReadCSV.Columns.Add("Department")
Dim csvParser As New TextFieldParser("C:\Users\Excel\Desktop\Employee.txt")
csvParser.Delimiters = New String() {","}
csvParser.TrimWhiteSpace = True
csvParser.ReadLine()
While Not (csvParser.EndOfData = True)
tblReadCSV.Rows.Add(csvParser.ReadFields())
End While
Dim con As New SqlConnection("Server=Server_Name\SQLEXPRESS;Database=Database_Name;Trusted_Connection=True;")
Dim strSql As String = "Insert into Employee(FName,LName,Department) values(#Fname,#Lname,#Department)"
'Dim con As New SqlConnection(strCon)
Dim cmd As New SqlCommand()
cmd.CommandType = CommandType.Text
cmd.CommandText = strSql
cmd.Connection = con
cmd.Parameters.Add("#Fname", SqlDbType.VarChar, 50, "FName")
cmd.Parameters.Add("#Lname", SqlDbType.VarChar, 50, "LName")
cmd.Parameters.Add("#Department", SqlDbType.VarChar, 50, "Department")
Dim dAdapter As New SqlDataAdapter()
dAdapter.InsertCommand = cmd
Dim result As Integer = dAdapter.Update(tblReadCSV)
End Sub