How do I clear a combobox?

Question

I have some combo-boxes that are set up as drop down lists, and the user can pick a number in them. I also have a Clear button that should clear the text from the combo boxe

Answer 1

Use:

comboBox1.ResetText();

and it's done.

Docs: ComboBox.ResetText Method (Namespace: System.Windows.Forms) https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.combobox.resettext?view=netframework-4.8

Answer 2

private void Resetbtn_Click(object sender, EventArgs e)
{    
    comboBox1.Items.Clear(); // it will clear a combobox

    comboBox1.Items.Add("Student"); //then add combobox elements again. 
    comboBox1.Items.Add("Staff");
}

Answer 3

Combo Box, DropDown all are having the same logic to clear/remove all items from them and it is like below.

//For checkbox list
cblTest.Items.Clear();

//For drop down list
ddlTest.Items.Clear();

Answer 4

When ComboBox is not data-bound, I've found I need both: Clear() removes the items but still leaves the SelectedItem's text, while ResetText() removes that text. VS2008.

ComboBox.Items.Clear();
ComboBox.ResetText();

Answer 5

If you just want to clear the current selection, but leave all of the items in the list, you can use:

cboHour.SelectedIndex = -1

Answer 6

This worked for me when I added ComboBox.Focus()

ComboBox.Items.Clear();
ComboBox.ResetText();
ComboBox.Focus();