How to pass values from textbox to datagridview in VB 2008?

i used a split container, in the 1st panel, i put the textbox for the user to input the values. In the 2nd panel, i put the datagridview to output the values that the user inputted. Now, i don't know and i cannot find way how to print the values into the datagridview from the textbox. please help me. thanks!

Create a class object to hold the information for the Datagridview.. create a variable as a List Of (object) and set it as the Datasource for the Datagridview..

Every time the text entry is completed add it to the list and update/Refresh the Datagridview ....

Gremmy...

Can you please show me a sample code? So i can understand more because i'm a newbie and cannot understood some terms. Thanks!

Private Sub Calculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim num1, num2, num3 As Integer

num1 = TextBox2.Text
num2 = TextBox3.Text
num3 = num2 * num1
TextBox4.Text = num3

End Sub

--->This is my input code

Public Property DataSource() As Object
Get

End Get

Set(ByVal value As Object)

End Set

End Property

---> This is my output code. Can you please help me to fill up?

Your part of the way there .... so lets fill up ... :)

Code:

---

    Public Class DataGridData
        Private _Text As String
#Region "Properties"
        Public Property Text() As String
            Get
                Return _Text
            End Get
            Set(ByVal Value As String)
                _Text = Value
            End Set
        End Property
#End Region
    End Class

---

Above is you class object that you can now use to add lists of text to the datagridview...

Next we need to declare a few items...

Code:

---

Private DGVdata As List(Of DataGridData)

Private Sub Calculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

    Dim num1, num2, num3 As Integer
    num1 = TextBox2.Text
    num2 = TextBox3.Text
    num3 = num2 * num1
    TextBox4.Text = num3
    TmpDGVData.Text = TextBox4.Text

    'Create a new entry
    Dim TmpDGVData As New DataGridData
    DGVdata.Add (TmpDGVData)

    'Update the Datagridview...
    RefreshDGV()
End Sub

Private Sub RefreshDGV()
    DataGridView1.DataSource = DGVdata
End Sub

---

This i think should help you get started...

Gremmy..

I tried to run it but when i clicked the button but there's an error. "NullReferenceException was unhandled. Object reference not set to an instance of an object." Please help me. Thanks!

Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

ComboBox1.Items.Add("CD/DVD Burning".ToString)
ComboBox1.Items.Add("Downloads".ToString)
ComboBox1.Items.Add("Printing".ToString)

ComboBox1.Width = 100

End Sub

Private Sub TabPage1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

End Sub

Private Sub SplitContainer1_Panel1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles SplitContainer1.Panel1.Paint

End Sub

Private Sub Transaction_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click

End Sub

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged

End Sub

Public Class DataGridData
Private _Text As String
#Region "Properties"
Public Property Text() As String
Get
Return _Text
End Get
Set(ByVal Value As String)
_Text = Value
End Set
End Property
#End Region
End Class

Private DGVdata As List(Of DataGridData)

Private Sub Calculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

'Create a new entry
Dim TmpDGVData As New DataGridData
DGVdata.Add(TmpDGVData)

Dim quantity, price, totalAmount As Integer
quantity = TextBox2.Text
price = TextBox3.Text
totalAmount = quantity * price
TextBox4.Text = totalAmount
TmpDGVData.Text = TextBox4.Text

'Update the Datagridview...
RefreshDGV()
End Sub

Private Sub RefreshDGV()
DataGridView1.DataSource = DGVdata
End Sub



Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick

End Sub
End Class

--->This is my whole code. Still gets this error when i run it. "A first chance exception of type 'System.NullReferenceException' occurred in ic.exe" Please help me. Thanks a lot!

Please go back and use CODE TAGS around your code

Code:

---

' so we CAN READ IT
'    the way    you  wrote    IT!

---

also, highlight the line that crashes, and give the exact error message

Like i said i gave you enough to get started...

all that is missing is in the form load sub add...

Code:

---

DGVdata = New List(Of DataGridData)

---

Okay. Thanks a lot!