Question

怎样用window API修改combobox的值

Answer 1

using System.Runtime.InteropServices;

[DllImport("User32.dll", EntryPoint = "SendMessage")]
private static extern int SendMessage(
IntPtr hWnd,
int Msg,
int wParam,
int lParam
);
public int CB_SETCURSEL = 334;
private void button1_Click(object sender, EventArgs e)
{
SendMessage(comboBox1.Handle, CB_SETCURSEL, 1, 0);
//或者
comboBox1.SelectedIndex = 1;
}