C# Create An AutoComplete TextBox on WinForm

WinForm 的 TextBox 製作簡單的 AutoComplete 功能

1. Form 加上 TextBox

2. 設定 AutoCompleteCustomSource,  AutoCompleteMode 和 AutoCompleteSource

private AutoCompleteStringCollection stringCollection;
 
private void Form1_Load(object sender, EventArgs e)
{
    stringCollection=new AutoCompleteStringCollection();
    stringCollection.AddRange(new[] {"dog", "cat", "mouse", "fish"});

    textBox1.AutoCompleteCustomSource = stringCollection;
    textBox1.AutoCompleteMode= AutoCompleteMode.Suggest;
    textBox1.AutoCompleteSource= AutoCompleteSource.CustomSource;            
}

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