By name and not By index

when I want to change parameters in column I have to write the index of the column and not the name

for example
this code work good


Dim dtchild As DataTable = New DataTable
dtchild.Columns.Add("cID", GetType(System.Int32))
dtfather.Columns(1).Unique = True

but here I get error


Dim dtchild As DataTable = New DataTable
dtchild.Columns.Add("cID", GetType(System.Int32))
dtfather.Columns("cID").Unique = True

the Same problem with dataTable

this code is OK

For Each ro In ds.Tables(0).Rows

and here I got error

For Each ro In ds.Tables("dtfather").Rows

how can I use the name and not the indexes?

thanks alot

in access I can lock the combobox

me.combo1.locked = true

in vb.net there is no this option
I can just to Enabled but then its change the color and its not good for me

Is there a way to locked the combo and not by Enabled?

thanks again

Quote:

---

Originally Posted by 24sharon

when I want to change parameters in column I have to write the index of the column and not the name

for example
this code work good


Dim dtchild As DataTable = New DataTable
dtchild.Columns.Add("cID", GetType(System.Int32))
dtfather.Columns(1).Unique = True

but here I get error


Dim dtchild As DataTable = New DataTable
dtchild.Columns.Add("cID", GetType(System.Int32))
dtfather.Columns("cID").Unique = True

the Same problem with dataTable

this code is OK

For Each ro In ds.Tables(0).Rows

and here I got error

For Each ro In ds.Tables("dtfather").Rows

how can I use the name and not the indexes?

thanks alot

---

dunno what happend to your machine but it works in my machine

VB Code:

Dim ds As New DataSet()
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        values()
        Me.DataGrid1.DataSource = ds.Tables("dt")
        Dim r As DataRow
        For Each r In ds.Tables("dt").Rows
            MessageBox.Show(r(0).ToString)
        Next
    End Sub
 
Sub values()
        Dim s() As String = {"awe3cg", "waheh", "askdjf", "lkajsd"}
        ds.Tables.Add("dt")
        ds.Tables("dt").Columns.Add("name")
        ds.Tables("dt").Columns("name").Unique = True
        Dim i As Integer
        For i = 0 To UBound(s)
            Dim d As DataRow = ds.Tables("dt").NewRow
            d(0) = s(i)
            ds.Tables("dt").Rows.Add(d)
        Next
    End Sub

mar_zim

Thanks!


did someone know the replay to my second question?