[02/03] Default processing in form load event

In a combobox i have filled with data the "selectedindexChanged" event fires on form load.

VB Code:

Private Sub frmTest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        datranstype.Fill(uscData.DsPersonalFinance.TransType)
     
 cboTransType.DataSource = uscData.DsPersonalFinance
        cboTransType.DisplayMember = "TransType.transType"
        cboTransType.ValueMember = "TransType.transTypePK"
End Sub

Is there a reason for the selectedIndexChanged on that event to fire on form load? and is there a way to stop that event from firing, it is causing some problems.

Setting the DataSource property triggers the SelectedIndexChanged event before you've set your ValueMember property.

Simply set the DataSource afterwards and you won't get an unexpected SelectedValue type

VB Code:

cboTransType.DisplayMember = "TransType.transType"
        cboTransType.ValueMember = "TransType.transTypePK"
        cboTransType.DataSource = uscData.DsPersonalFinance

Regards,

- Aaron.

Thanks Aaron, that worked and it fixed my problem.