combobox problem

[stm]

Hi,

I use a combobox to show username, the property
DisplayMember is the username and ValueMember is the userID.

In the combobox's SelectedIndexChanged event, I do some checking by accessing the SelectedValue property.

When I run my program, during initialize stage, I found that the SelectedValue property will return a {System.Data.DataRowView} instead of the actual value, and cause my program to fail.

Is there anything I need to take care? Currently, I just use a boolean flag to control the checking inside the event.

Thx!

[Aaron Young]

It sounds like you're assigning the control's DataSource property before setting the DisplayMember and ValueMember properties.
When you assign the DataSource the control is populated and the SelectedIndexChanged event is triggered.
If you set the DataSource property after setting the DisplayMember and ValueMember properties you wont have that problem:

ComboBox1.DisplayMember = "Username"
      ComboBox1.ValueMember = "UserId"
      ComboBox1.DataSource = table

Regards,

- Aaron.