C# 文本框显示以前写过的文本 [英] C# textbox show previous written texts

问题描述

例如，如果您去 facebook 并双击登录文本框，那么有一些以前有人写过的登录名.有没有办法在 C# 文本框上制作以前输入的下拉菜单?我不想要组合框.

For example if you go to facebook and press double click on the login textbox, then there are some Logins that previous someone wrote. Is there any way to make this dropdown of previous inputs on C# textbox? I don't want combobox.

推荐答案

请参阅 TextBox.AutoCompleteMode 和 TextBox.AutoCompleteSource 文本框的属性.您需要在以下几行做一些事情:

See the TextBox.AutoCompleteMode and TextBox.AutoCompleteSource properties of the TextBox. You need to do something on the following lines:

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        AutoCompleteStringCollection autoComplete = new AutoCompleteStringCollection();
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            autoComplete.Add(textBox1.Text);

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            textBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
            textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;
            //auto.Add(textBox1.Text);
            textBox1.AutoCompleteCustomSource = autoComplete;
        }
    }
}

查看以下教程:WinForms Windows 中的自动完成文本框表格申请

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