private void btnDelUser_Click(object sender, EventArgs e)
{
if (this.treeUser.SelectedNode == null)
{
MessageBox.Show(this, "请选中要删除的用户！！！", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
//获取要删除的用户
UserClass user = (UserClass)this.treeUser.SelectedNode.Tag;
//询问用户确认删除操作
if (MessageBox.Show(this, "真的要删除用户:" + user.Name + "?", "提示",
MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
{
return;
}
//删除用户
if (UserSql.DeleteUser(user.Name))
{
MessageBox.Show(this, "删除成功！！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
//删除成功，刷新用户列表
this.LoadUserList();
}
else
{
MessageBox.Show(this, "删除失败！！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void ModifyPasswardForm_Load(object sender, EventArgs e)
{
List <UserClass> userLst = UserSql.LoadUserList();
foreach (UserClass user in userLst)
{
this.cmbUser.Items.Add(user);
}
}
private void LoadUserList( )
{
//从数据库加载所有可用的用户
this.UserList = UserSql.LoadUserList();
this.cmbUser.Items.Clear();
if (this.UserList != null)
{
foreach (UserClass user in this.UserList)
{
this.cmbUser.Items.Add(user);
}
//默认选中第一个用户
if (this.cmbUser.Items.Count > 0)
{
this.cmbUser.SelectedIndex = 0;
}
}
}
private void LoadUserList()
{
//清空原有数据显示
this.treeUser.Nodes.Clear();
//加载用户列表
List <UserClass> userList = UserSql.LoadUserList();
if (userList != null)
{
//依次显示所有的用户信息
foreach (UserClass user in userList)
{
TreeNode node = new TreeNode();
node.Text = user.Name;
node.Tag = user;
this.treeUser.Nodes.Add(node);
}
}
}
private void btnAdd_Click(object sender, EventArgs e)
{
//进行姓名合法性检查
string name = this.tbName.Text.Trim( );
if (string.IsNullOrEmpty(name))
{
MessageBox.Show("请输入姓名！", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//进行密码合法性检查
if (this.tbPwd.Text.Trim() != this.tbPwd2.Text.Trim())
{
MessageBox.Show("两次密码不一致，请再次确认新密码！", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
//清空现有密码，并将光标移动到密码输入框
this.tbPwd.Clear();
this.tbPwd2.Clear();
this.tbPwd.Focus();
return;
}
string pwd = tbPwd.Text.Trim();
UserRights right = (UserRights)this.cmbRight.SelectedIndex;
//创建用户对象
UserClass user = new UserClass(name, pwd, right);
//添加用户到数据库
if (UserSql.Adduser(user))
{
MessageBox.Show("添加用户:" + name + "，成功", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
//添加成功，关闭对话框
this.DialogResult = DialogResult.OK;
}
else
{
MessageBox.Show("添加用户:" + name + "，失败", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void btnCPwd_Click(object sender, EventArgs e)
{
//获取当前选中用户
UserClass user = (UserClass)this.cmbUser.SelectedItem;
//检查旧密码的输入合法性
if (this.tbPwd.Text.Trim() != user.Password)
{
MessageBox.Show("请输入正确的原密码！", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
//清空原密码输入框，并获取焦点
this.tbPwd.Clear();
this.tbPwd.Focus();
return;
}
//检查新密码的合法性
if (this.tbNewPwd1.Text.Trim() != this.tbNewPwd2.Text.Trim())
{
MessageBox.Show("两次新密码不一致，请再次确认新密码！", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
//清空现有密码，并将光标移动到密码输入框
this.tbNewPwd1.Clear();
this.tbNewPwd2.Clear();
this.tbNewPwd1.Focus();
return;
}
user.Password = tbNewPwd1.Text;
if (UserSql.ModifyUser(user))
{
MessageBox.Show("修改用户信息:" + user.ToString() + "，成功", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
MessageBox.Show("修改用户信息:" + user.ToString() + "，失败", "提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
user.Password = tbPwd.Text.Trim();
}
}