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. (Last updated on: November 16, 2018).
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 |
Published Date: April 30, 2011 |
Last Revised Date: July 10, 2014


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.

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