We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. Image for the cookie policy date
Unfortunately, activation email could not send to your email. Please try again.
Syncfusion Feedback

How to Manually Drop Down the ComboBoxBase?

Platform: WinForms |
Control: ComboBoxBase


The dropdown area of ComboBoxBase can be programmatically displayed using the following code.

In this example, a button control is added to the form and a Click event handler is setup to call the DroppedDown property.


private void button1_Click(object sender, System.EventArgs e)


this.comboBoxBase1.DroppedDown =true;



Private Sub button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)

Me.comboBoxBase1.DroppedDown = True

End Sub

2X faster development

The ultimate WinForms UI toolkit to boost your development speed.
You must log in to leave a comment

Please sign in to access our KB

This page will automatically be redirected to the sign-in page in 10 seconds.

Up arrow icon

Warning Icon You are using an outdated version of Internet Explorer that may not display all features of this and other websites. Upgrade to Internet Explorer 8 or newer for a better experience.Close Icon

Live Chat Icon For mobile