Changing datasource on cbobox(runtime)

[alleho]

I have a combobox(Itemtype) that lets the user select 1 of 3 values. Depending on what they select I need to change the datasource and valuemenu of another combobox.

 

simple I thought.

when I run the code it works OK if you select(1,2, or3 ) it fills the other combo box with the correct data. However if I then change the value in Itemtype I get an error message:

Unhandled Exception: System.ArgumentException: Could not bind to the new value member.

Parameter name: value

 

Any ideas????

 

Private Sub cboItemType_SelectionChangeCommitted(ByVal sender As Object, ByVal e As System.EventArgs) Handles cboItemType.SelectionChangeCommitted

 

If cboItemType.SelectedValue = 1 Then 'comp

cboItemId.Visible = True

cboItemId.DataSource = DsOrdertwo1

cboItemId.ValueMember = "viewstock.ecas"

 

ElseIf cboItemType.SelectedValue = 2 Then 'kit

cboItemId.Visible = True

cboItemId.DataSource = DsOrdertwo1

cboItemId.ValueMember = "viewkits.kitid"

Else

cboItemId.Visible = True

cboItemId.DataSource = DsOrdertwo1

cboItemId.ValueMember = "viewmodules.modid"

End If

 

 

Thanks In advance

[mocella]

Add this before your if statement starts - see if that fixes it:

cboItemId.DataBindings.Clear()

[alleho]

Didn't work. Got the same err message.

Seems to be the valuemember bit it does not like.

Also tried puting that line of code IN the if statement.