using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; namespace test { public partial class Form3 : Form { public Form3() { InitializeComponent(); SetClassLong(this.Handle, GCL_STYLE, GetClassLong(this.Handle, GCL_STYLE) | CS_DropSHADOW); //API函数加载,实现窗体边框阴影效果 } #region 窗体边框阴影效果变量申明 const int CS_DropSHADOW = 0x20000; const int GCL_STYLE = (-26); //声明Win32 API [DllImport("user32.dll", CharSet = CharSet.Auto)] public static extern int SetClassLong(IntPtr hwnd, int nIndex, int dwNewLong); [DllImport("user32.dll", CharSet = CharSet.Auto)] public static extern int GetClassLong(IntPtr hwnd, int nIndex); #endregion // 定义下拉列表框 private ComboBox cmb_Temp = new ComboBox(); private void Form3_Load(object sender, EventArgs e) { // 绑定性别下拉列表框 BindSex(); // 绑定数据表 BindData(); // 设置下拉列表框不可见 cmb_Temp.Visible = false; // 添加下拉列表框事件 cmb_Temp.SelectedIndexChanged += new EventHandler(cmb_Temp_SelectedIndexChanged); // 将下拉列