Question

I am trying to insert into Microsoft Access database from VB.net.
I can read from the Data Base(can see in Grid View) but cannot insert into Database.I don’t know where the problem is.
This is what i am doing:

Imports System.Data
Imports System.Data.OleDb

Public Class Form1
Public ctr As Integer
Dim bm As BindingManagerBase
Dim dr As DataRow, dt As DataTable
Dim flag As Integer, tid As Integer, tname As String
Dim totalrow As Integer, currentrow As Integer

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    'TODO: This line of code loads data into the 'ShowroomDataSet.customer' table. You can move, or remove it, as needed.
    bm = Me.BindingContext(ShowroomDataSet, "customer")
    bm.Position = 0
    Me.CustomerTableAdapter.Fill(Me.ShowroomDataSet.customer)

 End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim x As Integer
    Dim y As String
    bm.Position = bm.Count - 1
    x = ShowroomDataSet.customer(bm.Position).cid
    y = ShowroomDataSet.customer(bm.Position).cname
    TextBox1.Text = x
    TextBox2.Text = y

  End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
    Close()
End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
    'save
    'enable all buttons except save
    If flag = 1 Then
        dt = ShowroomDataSet.Tables("customer")
        dr = dt.NewRow()
        dr!cid = Val(TextBox1.Text)
        dr!cname = TextBox2.Text
        dt.Rows.Add(dr)

    End If
    If flag = 2 Then
        dr.Delete()
    End If
    If flag = 3 Then
        dt = ShowroomDataSet.Tables("customer")
        dr = dt.Rows.Find(tid)
        dr.BeginEdit()
        dr!cid = Val(TextBox1.Text)
        dr!name = TextBox2.Text
        dr.EndEdit()
    End If
    'Me.CustomerTableAdapter.Update(Me.ShowroomDataSet.customer)
    'Me.CustomerTableAdapter.Fill(Me.ShowroomDataSet.customer)
    flag = 0
    Button1.Enabled = True
    Button2.Enabled = False
    Button3.Enabled = True
    Button4.Enabled = True

End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
    'add
    'disable all buttons except save
    Dim len As Integer
    TextBox1.Text = " "
    TextBox2.Text = " "
    flag = 1
    TextBox1.Focus()
    Button1.Enabled = False
    Button2.Enabled = True
    Button3.Enabled = False
    Button4.Enabled = False
    dt = ShowroomDataSet.Tables("customer")
    len = dt.Rows.Count - 1
    dr = dt.Rows(len)
  End Sub
  End Class

No errors or faults.
Please help.

Answer 1

If you are just looking to insert data into an access database use the database table adapter insert method, followed by the fill method of the table adapter to fill the a table in the dataset. See following example

me.tableadapter.insert(me.1stFieldTextbox.text, me.2ndFieldTextBox.Text….)
me.tableadapter.fill(me.Dataset.Table)

If you get an error, it could be because your data types do not match, you try to insert data into an auto increament field or one which has a calculated data type.