Ndtyjky

I have trouble rounding some cells from my datatable.
I want this round to 2 decimal places, as you can imagine. I will explain quickly how I charge data to the DataTable :

I have this function stored in a class:

Protected Friend Function cargarPref(ByVal id_Pref As String) As DataTable

    Dim cmd As String = "Select Material,Cubicaje,SubTotal,ITBM,Total from Preferencia WHERE Id_Preferencia=@id_Pref"

    Dim t As New DataTable

    Try

        con.Open()

        comando = New OleDbCommand(cmd, con)

        comando.Parameters.AddWithValue("@id_Pref", id_Pref)

        adapter = New OleDbDataAdapter(comando)

        adapter.Fill(t)

        comando.Dispose()

        adapter.Dispose()

        con.Close()

    Catch ex As Exception

        MsgBox("Error en la consulta: " + ex.Message, MsgBoxStyle.Critical)

    End Try

    Return t

End Function

Ok, now I call it in my windows form:

 Private Sub DataCliente_CellContentClick(sender As Object, e As DataGridViewCellEventArgs) Handles DataCliente.CellContentClick

    If (Not IsNothing(DataMate)) Then

        DataMate.DataSource = Nothing

        mt.Clear()

    End If

    Dim index As Integer = 0

    If (DataCliente.Columns(DataCliente.CurrentCell.ColumnIndex).Name.Equals("Empresa")) Then

        index = Me.DataCliente.CurrentRow.Index

        lblid.Text = DataCliente.Rows(index).Cells("Id_Cliente").Value

        lblempresa.Text = DataCliente.Rows(index).Cells("Empresa").Value

        lbldirecc.Text = DataCliente.Rows(index).Cells("Direccion").Value

        lblcorreo.Text = DataCliente.Rows(index).Cells("Correo").Value

        lbltel.Text = DataCliente.Rows(index).Cells("Telefono").Value

        lblpreyd.Text = Math.Round(CDbl(DataCliente.Rows(index).Cells("PrecioYD").Value), 2).ToString("N2")

    End If

    mt = data.cargarPref(DataCliente.Rows(index).Cells("Id_Preferencia").Value) <--HERE!!!

    DataMate.DataSource = mt

    PanelMaterial.Enabled = True

End Sub

Now, watch as my values ​​are in my database access, Along With the datagrid of the program!

For some strange reason ... the data I have taken from the database , the program treats them as if they were integers.

How I can then round off those values ​​that are within the datatable, before printing in datagridview?

I finally discovered a solution , and I am going to show you how to solve this problem, if you need it (Before you do this , you must define all the columns you want to see on your datagridview !):

First, I create a class with public properties:

Public Class Preferencia

Public Property Material() As String

Public Property Cubicaje() As String

Public Property SubTotal() As String

Public Property ITBM() As String

Public Property Total() As String

End Class

Second , I create 2 functions and one procedural method :

 Private Function setPreferencia(ByVal material As String, ByVal cubicaje As String, ByVal subtotal As String, ByVal itbm As String, ByVal total As String) As Preferencia

    Dim item As New Preferencia

    item.Material = material

    item.Cubicaje = FormatNumber(cubicaje, 2)

    item.SubTotal = FormatNumber(subtotal, 2)

    item.ITBM = FormatNumber(itbm, 2)

    item.Total = FormatNumber(total, 2)

    Return item

End Function



 Private Function registrarPreferencia() As List(Of Preferencia)

    Dim lista As New List(Of Preferencia)

    For Each itm In mt.Rows

        lista.Add(setPreferencia(itm(0), itm(1), itm(2), itm(3), itm(4)))

    Next

    Return lista



 Protected Friend Sub FillGrid()

    DataMate.AutoGenerateColumns = False

    DataMate.DataSource = registrarPreferencia()

    DataMate.Columns("Material").DataPropertyName = "Material"

    DataMate.Columns("Cubicaje").DataPropertyName = "Cubicaje"

    DataMate.Columns("SubTotal").DataPropertyName = "SubTotal"

    DataMate.Columns("ITBM").DataPropertyName = "ITBM"

    DataMate.Columns("Total").DataPropertyName = "Total"

End Sub

Now the only thing is to call the method " FillGrid ()" when you want to print the data. And finaly, I resolved it!