TextBox AutoCompleteStringCollection Suggest
问题 I have created a form in C# with a CustomSource for a textbox: public partial class FormLookup : Form { AutoCompleteStringCollection source = new AutoCompleteStringCollection(); public FormLookup() { InitializeComponent(); source.Add("Test"); source.Add("TestItem"); source.Add("TestValue"); this.textBox1.AutoCompleteCustomSource = source; } private void textBox1_TextChanged(object sender, EventArgs e) { } } The result looks like this: The purpose of what I am looking for is to select multiple