Events To Hook For Text Changed Events In A Winforms Combobox

Updated on Sep 13, 2025

WinForms SfComboBox.TextBox.TextChanged event can be hooked to listen the textbox’s text changes. Also you can use SelectedIndexChanged, SelectedValueChanged events of SfComboBox to listen the selection changes.

sfComboBox1.TextBox.TextChanged += SfComboBox1_TextChanged;
sfComboBox1.SelectedIndexChanged += SfComboBox1_SelectedIndexChanged;

private void SfComboBox1_TextChanged(object sender, EventArgs e)
{
     //Text changed
     var selectedText = ((TextBox) sender).Text;
}

private void SfComboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}