private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            //展开联系人详细信息

            MainFormTools_D mft = new MainFormTools_D();

            if (tabControl1.SelectedIndex == 0)
            {
                mft.UserDetail_D(listBox1.SelectedItem.ToString(), txtAddress, txtAge, txtBirth, txtBoxFind, txtCompany, txtName, txtPhoneNum, txtQQ, txtRemark, radioButtonSex1, radioButtonSex2, imageList1, pictureBox1);
            }
            else
            {
                mft.UserDetail_D(listBoxUsers.SelectedItem.ToString(), txtAddress, txtAge, txtBirth, txtBoxFind, txtCompany, txtName, txtPhoneNum, txtQQ, txtRemark, radioButtonSex1, radioButtonSex2, imageList1, pictureBox1);
            }
            try
            {
                if (listBox1.SelectedItem.ToString() != "")
                {
                    toolStripButton2.Enabled = true;
                }
                else
                {
                    toolStripButton2.Enabled = false;
                }
            }
            catch (Exception)
            {
            }
        }
 //搜索用户
 private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
 {
     listBoxUsers.Items.Clear();
     if (txtBoxFind.Text != "")
     {
         userSelectedItem = comboBox1.SelectedItem.ToString();
         MainFormTools_D mft = new MainFormTools_D();
         mft.findUsers(userSelectedItem, txtBoxFind.Text.Trim(), listBoxUsers);
     }
 }