启用按钮30的单击事件后，下面的代码将光标定位在文本框6内。

private void button30_Click(object sender, EventArgs e)
{
    textBox6.Select();
}

以下应用程序包含FormTest中的摘要代码。从FormTest.cs文件中esigner.cs可能导致错误的文件和应用程序代码：

/* FormTestDesigner.cs */
namespace WinFormsApp
{
    partial class FormTest
    {
        private void InitializeComponent()
        {
            /* Elements */
            this.enterButton = new System.Windows.Forms.Button();
            this.inputTextBox = new System.Windows.Forms.TextBox();
            
            /* Button */
            this.enterButton.Click += new System.EventHandler(this.enterButton_Click);

            /* Form */
            this.Controls.Add(this.inputTextBox);
            this.Controls.Add(this.enterButton);
        }

        /* Controls */
        private System.Windows.Forms.Button enterButton;
        private System.Windows.Forms.TextBox inputTextBox;
    }
}

using System.Windows.Forms;

namespace WinFormsApp
{
    public partial class FormTest: Form
    {
        public FormTest()
        {
            InitializeComponent();
        }

        private void enterButton_Click(object sender, EventArgs e)
        {
            inputTextBox.Select();
        }
    }
}