private void combo1change(object sender, EventArgs e)
{
type = comboBox1.SelectedValue.ToString();
if (type.Equals("未知"))
{
labeltextchange();
}
else
{
BLL bll = new BLL();
DataTable dt = bll.uperrestrictedbytype(type);
dt.Columns[0].ColumnName = "uper";
DataRow dr = dt.NewRow();
dr["uper"] = "未知";
dt.Rows.Add(dr);
comboBox2.DataSource = dt;
comboBox2.DisplayMember = "uper";
comboBox2.ValueMember = "uper";
comboBox2.SelectedIndex = dt.Rows.Count - 1;
DataTable dt2 = bll.titlerestrictedbytype(type);
dt2.Columns[0].ColumnName = "title";
comboBox3.DataSource = dt2;
comboBox3.DisplayMember = "title";
comboBox3.ValueMember = "title";
}
}
private void goregist(object sender, EventArgs e)
{
BLL bll=new BLL();
string name,pass1;
label5.Text = "";
label6.Text = "";
label7.Text = "";
if (textBox1.Text == null)
{
label5.Text = "用户名不能为空";
return;
}
else
{
name=textBox1.Text.ToString();
pass1="";
if(bll.checkuser(name,pass1)!=2)
{
label5.Text = "用户名已被占用";
return;
}
}
if (textBox2.Text == null)
{
label6.Text = "密码不能为空";
return;
}
else if (textBox2.Text.ToString().Length < 6)
{
label6.Text = "密码长度不能小于6个字符";
return;
}
else if (!(textBox2.Text.ToString().Equals(textBox3.Text.ToString())))
{
label7.Text = "两次输入的密码不一致";
return;
}
else
{
pass1 = textBox2.Text.ToString();
bll.insertcustomer(bll.maxid(false)+1, name, pass1);
MessageBox.Show("注册成功！");
this.Close();
login log = (login)this.Owner;
log.Show();
}
}
public Form3()
{
InitializeComponent();
BLL bll = new BLL();
DataTable dt1 = bll.showtype();
dt1.Columns[0].ColumnName = "type";
DataRow dr1 = dt1.NewRow();
dr1["type"] = "未知";
dt1.Rows.Add(dr1);
comboBox1.DataSource = dt1;
comboBox1.DisplayMember = "type";
comboBox1.ValueMember = "type";
comboBox1.SelectedIndex = dt1.Rows.Count-1;
//comboBox1.Items.Add("未知");
//comboBox1.Items.Insert(0, "unkown");
type = comboBox1.SelectedValue.ToString();
DataTable dt2 = bll.showuper();
dt2.Columns[0].ColumnName = "uper";
DataRow dr2 = dt2.NewRow();
dr2["uper"] = "未知";
dt2.Rows.Add(dr2);
comboBox2.DataSource = dt2;
comboBox2.DisplayMember = "uper";
comboBox2.ValueMember = "uper";
comboBox2.SelectedIndex = dt2.Rows.Count - 1;
uper = comboBox2.SelectedValue.ToString();
DataTable dt3 = bll.showtitle();
dt3.Columns[0].ColumnName = "title";
comboBox3.DataSource = dt3;
comboBox3.DisplayMember = "title";
comboBox3.ValueMember = "title";
title = comboBox3.SelectedValue.ToString();
label4.Text = "(您要下载的是\n 主题为 ：" + comboBox1.SelectedValue.ToString() +
"\n 上传者为：" + comboBox2.SelectedValue.ToString() +
"\n 文章名为：" + comboBox3.SelectedValue.ToString() + "\n的资料!)";
}
private void upload(object sender, EventArgs e)
{
string labelname="";
string onlyfile="";
string uristring;
string path;
string i = textBox1.Text.ToString();
if (textBox1.Text.ToString() == "")
{
MessageBox.Show("请输入要上传的文件！");
return;
}
if (textBox2.Visible == false)
{
labelname = comboBox1.SelectedValue.ToString();
}
else if (textBox2.Text.ToString() == "")
{
MessageBox.Show("新创建的主题名不能为空哦！");
return;
}
else
labelname = textBox2.Text;
onlyfile = fileName.Substring(fileName.LastIndexOf("\\") + 1);
uristring = "f:\\databaseupdown\\" + labelname + "\\" +onlyfile;
string p = uristring.Replace("\\", "/");
path = "f:\\databaseupdown\\" + labelname;
WebClient myWebClient = new WebClient();
//设置应用程序的系统凭据
myWebClient.Credentials = CredentialCache.DefaultCredentials;
//要上传的文件穿件文件流
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.ReadWrite);
//以二进制方式读取
BinaryReader br = new BinaryReader(fs);
//当前流写入二进制
byte[] postArray = br.ReadBytes((int)fs.Length);
Stream postStream = myWebClient.OpenWrite(uristring,"PUT");
try
{
if (postStream.CanWrite)
{
postStream.Write(postArray, 0, postArray.Length);
postStream.Close();
fs.Dispose();
BLL bll = new BLL();
int id=bll.maxid(true)+1;
DateTime dt=DateTime.Now;
//暂且先用new用户的身份插入数值
//通过theruserid传值，来用登陆者身份插入数值
bll.insertfile(id, onlyfile, labelname, dt, theuserid2, p);
MessageBox.Show("上传成功");
}
else
{
postStream.Close();
fs.Dispose();
MessageBox.Show("上传失败");
}
}
catch (Exception ex)
{
postStream.Close();
fs.Dispose();
MessageBox.Show("上传文件异常" + ex.Message);
throw ex;
}
finally
{
postStream.Close();
fs.Dispose();
}
}
private void download(object sender, EventArgs e)
{
SaveFileDialog save = new SaveFileDialog();
save.ShowDialog();
BLL bll=new BLL();
//string URL = "f:\\databaseupdown\\" + type + "\\" + title;
string p = bll.getpath(title, type, uper);
if (p.Equals(""))
{
MessageBox.Show("数据库中未提供路径！");
return;
}
string URL = p.Replace("/","\\");
string path = save.FileName;
string onlyfilename = path.Substring(path.LastIndexOf("\\") + 1);
WebClient client = new WebClient();
try
{
WebRequest myRe = WebRequest.Create(URL);
}
catch (Exception ex)
{
MessageBox.Show("下载文件异常" + ex.Message);
}
try
{
client.DownloadFile(URL, onlyfilename);
FileStream fs = new FileStream(onlyfilename, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
int length = (int)fs.Length;
byte[] mybyte = br.ReadBytes(length);
Thread.Sleep(2000);
fs.Close();
//进程占用出现在这里，访问不了文件
//FileStream fc = File.Create(path);
//fc.Close();
FileStream fstm = new FileStream(path, FileMode.Create, FileAccess.Write);
fstm.Write(mybyte, 0, length);
fstm.Close();
MessageBox.Show("下载文件成功！");
}
catch (Exception ex)
{
MessageBox.Show("下载文件异常" + ex.Message);
}
}
private void combo2change(object sender, EventArgs e)
{
uper = comboBox2.SelectedValue.ToString();
if (uper.Equals("未知"))
{
labeltextchange();
}
else
{
BLL bll = new BLL();
DataTable dt = bll.titlerestrictedbytypeuper(type,uper);
dt.Columns[0].ColumnName = "title";
comboBox3.DataSource = dt;
comboBox3.DisplayMember = "title";
comboBox3.ValueMember = "title";
}
}
