How to add multi rows on a datagridview cell VB.NET

If I understand you correctly, you want to wrap multiple data items in a single datagridview cell, right?
First, you have to add a newline between every two items, in vb, that will be:

vbCrLf

or

Environment.NewLine

Next, make your datagridview cells wrappable and rows autosizing, e.g.

DataGridView1.DefaultCellStyle.WrapMode = DataGridViewTriState.True
DataGridView1.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells

Putting them together, a demo is shown below:

Public Class Form1
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Dim dt As New DataTable

        dt.Columns.Add("Combined", GetType(String))
        dt.Columns.Add("id", GetType(Integer))
        dt.Columns.Add("Name", GetType(String))

        dt.Rows.Add("25" & vbCrLf & "James", "25", "James")
        dt.Rows.Add("50" & vbCrLf & "Mary", "50", "Mary")

        DataGridView1.DefaultCellStyle.WrapMode = DataGridViewTriState.True
        DataGridView1.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells
        DataGridView1.DataSource = dt
    End Sub
End Class

Yes.. already works for nvarch(MAX)

how to work with .. date . multiple datas??

Know i want to know how to get 3 Values += in datagridview

example .. column 1 - 23
22
87




textbox1.text = Must show me .. the total of 3 values ??