private void DeleteToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
string deleteoftype = "select TYPE from UI where UID='" + DB.UserData.PublicValue.UserID + "'";
string strFLR = queryofretext.SelectedRows[0].Cells["楼层数"].Value.ToString();
string deleteofuid = "select UID from RETEXT where PID=" + DB.UserData.PublicValue.viewPID + " AND FLR='" + strFLR + "'";
DB.SQLHelper delete = new DB.SQLHelper();
SqlDataReader readuid = delete.read(deleteofuid);
readuid.Read();
DialogResult dialogResult = MessageBox.Show("你确定要删除" + strFLR + "楼的回复吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dialogResult == DialogResult.No)//选择NO则不进行下一步
{
return;
}
if (deleteoftype == "1" || readuid[0].ToString() == DB.UserData.PublicValue.UserID) //判断，若为管理员或回复者则可以删除回复
{
string deleteRetext = "delete from RETEXT where PID=" + DB.UserData.PublicValue.viewPID + " and FLR='" + strFLR + "'";
DB.SQLHelper sqlhelp = new DB.SQLHelper();
sqlhelp.OperateTb(deleteRetext);
Queryretextbutton_Click(null, null);
}
else
{
MessageBox.Show("你不是回复用户或管理员，不能删除该回复！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void Reg_Click(object sender, EventArgs e)
{
string strUID = textBoxUID.Text.Trim();
string strPWD = textBoxPASSWORD.Text.Trim();
string strNAME = textBoxNAME.Text.Trim();
string strSEX = comboBoxSEX.Text;
string strAGE = textBoxAGE.Text.Trim();
string strOCC = textBoxOCC.Text.Trim();
string strHOB = textBoxHOB.Text.Trim();
//创建命令向数据库插入数据
if (strUID == "" || strPWD == "" || strNAME == "" || strSEX == "" || strAGE == "" || strOCC == "" || strHOB == "")
{
MessageBox.Show("注册失败！请将信息填写完整！", "提示");
}
else
{
string name = "select UID from UI where UID='" + strUID + "'";
DB.SQLHelper select = new DB.SQLHelper();
SqlDataReader read = select.read(name);
if (read.Read())
{
MessageBox.Show("注册失败！UID已存在！", "提示");
}
else
{
DB.SQLHelper Insert = new DB.SQLHelper();
string strInsert = "Insert into UI (UID,PASSWORD,NAME,SEX,AGE,OCC,HOB) Values('" + strUID + "','" + strPWD + "','" + strNAME + "','" + strSEX + "','" + strAGE + "','" + strOCC + "','" + strHOB + "')";
int n = Insert.Execute(strInsert);
//返回用户创建结果
if (n > 0)
{
MessageBox.Show("注册成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.DialogResult = DialogResult.OK;
this.Dispose();
this.Close();
}
else
{
MessageBox.Show("注册失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
}
private void PublishRetext_Load(object sender, EventArgs e)
{
dataGridViewofretext.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
showPID.Text = DB.UserData.PublicValue.viewPID.ToString();
try {//进行评论的加载
string sqlofretext = "select UID as 用户ID ,REDATE as 回复日期,RETEXT as 内容,FLR as 楼层数 from RETEXT where PID=" + DB.UserData.PublicValue.viewPID + "";
sqlofretext += " order by FLR";
DB.SQLHelper Queryretext = new DB.SQLHelper();
DataSet ds = Queryretext.GetDataSet(sqlofretext);
DataTable dt = ds.Tables[0];
dataGridViewofretext.DataSource = dt;
if (dt.Rows.Count == 0)
{
dataGridViewofretext.ContextMenuStrip = null;
}
else
{
dataGridViewofretext.ContextMenuStrip = contextMenuStripofretext;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
try {
string title = "select TITLE from POST where PID=" + DB.UserData.PublicValue.viewPID + "";
string main = "select PTEXT from POST where PID=" + DB.UserData.PublicValue.viewPID + "";
DB.SQLHelper showpost = new DB.SQLHelper();
SqlDataReader readtitle = showpost.read(title);
SqlDataReader readmain = showpost.read(main);
readtitle.Read();
readmain.Read();
titletext.Text = readtitle[0].ToString().Trim();
maintext.Text = readmain[0].ToString().Trim();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void Retext1_Click(object sender, EventArgs e)
{
try
{
string retext = retextbox.Text.Trim();
if (retext == "")
{
MessageBox.Show("回复不能为空！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
DB.SQLHelper selectflr = new DB.SQLHelper();
string time = DateTime.Now.ToString("yyyy/MM/dd");
string FLRinPost = "select MAX(FLR) from RETEXT where PID=" + DB.UserData.PublicValue.viewPID + "";
SqlDataReader readflr = selectflr.read(FLRinPost);
readflr.Read();
DB.UserData.PublicValue.FLR = readflr[0] == DBNull.Value?1:(Convert.ToInt32(readflr[0]) + 1); //判断是不是为空，全局变量，将flr查询结果用read读出后再用Convert.ToInt32转换为int
string sqlretext = "insert into RETEXT(UID,PID,REDATE,RETEXT,FLR) values ('" + DB.UserData.PublicValue.UserID + "'," + DB.UserData.PublicValue.viewPID + ",'" + time + "','" + retext + "'," + DB.UserData.PublicValue.FLR + ")";
DB.SQLHelper Insert = new DB.SQLHelper();
int n = Insert.Execute(sqlretext);
//返回用户创建结果
if (n > 0)
{
MessageBox.Show("回复成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
PublishRetext_Load(null, null);
}
else
{
MessageBox.Show("回复失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void 除ToolStripMenuItem_Click(object sender, EventArgs e) //删除菜单
{
string deleteoftype = "select TYPE from UI where UID='" + DB.UserData.PublicValue.UserID + "'";
string strPID = dataGridViewpost.SelectedRows[0].Cells["帖子ID"].Value.ToString();//捕捉选中的单元格
string deleteofuid = "select UID from POST where PID='" + strPID + "'";
DB.SQLHelper delete = new DB.SQLHelper();
SqlDataReader readuid = delete.read(deleteofuid);
readuid.Read();
DialogResult dialogResult = MessageBox.Show("你确定要删除帖子ID为：" + strPID + "的帖子信息吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dialogResult == DialogResult.No)//选择NO则不进行下一步
{
return;
}
if (deleteoftype == "1" || readuid[0].ToString() == DB.UserData.PublicValue.UserID)
{
string strdelete = "Delete From POST Where PID='" + strPID + "'";
try
{
DB.SQLHelper sqlhelp = new DB.SQLHelper();
sqlhelp.OperateTb(strdelete);
Qpost_Click(null, null);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
else
{
MessageBox.Show("你不是发帖用户或管理员，不能删除该帖子！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void Pubilshthepost_Click(object sender, EventArgs e)
{
string posttitle = publishtitle.Text.Trim();
string postmain = publishmain.Text.Trim();
if (posttitle == "" || postmain == "")
{
MessageBox.Show("标题或内容不能为空！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
string time = DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss");
string LV = LVOfPost.Text.Trim();
string pid = "select MAX(PID) from POST";
DB.SQLHelper selectpid = new DB.SQLHelper();
SqlDataReader readpid = selectpid.read(pid);
readpid.Read();
DB.UserData.PublicValue.PID = Convert.ToInt32(readpid[0]) + 1; //全局变量，将pid查询结果用read读出后再用Convert.ToInt32转换为int
string insert = "insert into POST(UID,PID,PDATE,TITLE,PTEXT,LV) values ('" + DB.UserData.PublicValue.UserID + "'," + DB.UserData.PublicValue.PID + ",'" + time + "','" + posttitle + "','" + postmain + "','" + LV + "')";
try
{
DB.SQLHelper sqlHelper = new DB.SQLHelper();
int n = sqlHelper.Execute(insert);
if (n > 0)
{
MessageBox.Show("发表成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
MessageBox.Show("因未知原因发表失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
private void Queryretextbutton_Click(object sender, EventArgs e)
{
string RUID = uidofretext.Text.Trim();
string Rtime = timeofretext.Text.Trim();
if (RUID == "" && Rtime == "")
{
MessageBox.Show("你必须输入一个查询约束条件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
try
{
string sqlquery = "select UID as 用户ID ,PID as 帖子ID,REDATE as 回复日期,RETEXT as 内容,FLR as 楼层数 from RETEXT where UID='" + RUID + "' ";
if (Rtime.Length > 0)
{
sqlquery += " and REDATE='" + Rtime + "'";
}
DB.SQLHelper Queryretext = new DB.SQLHelper();
DataSet ds = Queryretext.GetDataSet(sqlquery);
DataTable dt = ds.Tables[0];
queryofretext.DataSource = dt;
if (dt.Rows.Count == 0)
{
queryofretext.ContextMenuStrip = null;//删除菜单在无数据时不显示
MessageBox.Show("没有符合条件的帖子记录！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
queryofretext.ContextMenuStrip = contextMenuStripofretext;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
private void ChangeData_Click(object sender, EventArgs e)
{
if (textBoxNAME.Text == "" || textBoxPASSWORD.Text == "" || textBoxAGE.Text == "" || textBoxOCC.Text == "" || textBoxHOB.Text == "")
{
MessageBox.Show("请把所有为空的项目填写完整", "提示");
}
else
{
string updatepasswoad = "update UI set PASSWORD='******' where UID='" + DB.UserData.PublicValue.UserID + "'";
string updatename = "update UI set NAME='" + textBoxNAME.Text.ToString() + "' where UID='" + DB.UserData.PublicValue.UserID + "'";
string updatesex = "update UI set SEX='" + comboBoxSEX.Text.ToString() + "' where UID='" + DB.UserData.PublicValue.UserID + "'";
string updateage = "update UI set AGE='" + textBoxAGE.Text.ToString() + "' where UID='" + DB.UserData.PublicValue.UserID + "'";
string updateocc = "update UI set OCC='" + textBoxOCC.Text.ToString() + "' where UID='" + DB.UserData.PublicValue.UserID + "'";
string updatehob = "update UI set HOB='" + textBoxHOB.Text.ToString() + "' where UID='" + DB.UserData.PublicValue.UserID + "'";
DB.UserData.PublicValue.UserPassword = textBoxPASSWORD.Text.ToString(); //更新全局变量
DB.UserData.PublicValue.UserName = textBoxNAME.Text.ToString();
DB.UserData.PublicValue.UserSex = comboBoxSEX.Text;
DB.UserData.PublicValue.UserAge = textBoxAGE.Text.ToString();
DB.UserData.PublicValue.UserOcc = textBoxOCC.Text.ToString();
DB.UserData.PublicValue.UserHob = textBoxHOB.Text.ToString();
DB.SQLHelper update = new DB.SQLHelper();
int num = update.Execute(updatepasswoad) + update.Execute(updatename) + update.Execute(updatesex) + update.Execute(updateage) + update.Execute(updateocc) + update.Execute(updatehob);
if (num > 5)
{
MessageBox.Show("更新成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Close();
}
else
{
MessageBox.Show("更新失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
private void Qpost_Click(object sender, EventArgs e)
{
string Quid = QueryUID.Text.Trim();//查询的文本内容
string Qpid = QueryPID.Text.Trim();
string Qtime = time.Text.Trim();
if (Quid == "" && Qpid == "" && Qtime == "")
{
MessageBox.Show("你必须输入一个查询约束条件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
try {
if (Qpid.Length == 0 && Quid.Length == 0)
{
string sql = "select UID as 用户ID ,PID as 帖子ID,PDATE as 发帖日期,TITLE as 标题,PTEXT as 内容,LV as 等级 from POST where PDATE between '" + Qtime + " 00:00:00' and '" + Qtime + " 23:59:59'";
sql += " order by PDATE";
DB.SQLHelper Querypost = new DB.SQLHelper();
DataSet ds = Querypost.GetDataSet(sql);
DataTable dt = ds.Tables[0];
dataGridViewpost.DataSource = dt;
if (dt.Rows.Count == 0)
{
MessageBox.Show("没有符合条件的帖子记录！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
else if (Quid.Length == 0)
{
time.Text = "";
string sql = "select UID as 用户ID ,PID as 帖子ID,PDATE as 发帖日期,TITLE as 标题,PTEXT as 内容,LV as 等级 from POST where PID='" + Qpid + "' ";
sql += " order by PDATE";
DB.SQLHelper Querypost = new DB.SQLHelper();
DataSet ds = Querypost.GetDataSet(sql);
DataTable dt = ds.Tables[0];
dataGridViewpost.DataSource = dt;
if (dt.Rows.Count == 0)
{
MessageBox.Show("没有符合条件的帖子记录！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
else
{
string sql = "select UID as 用户ID ,PID as 帖子ID,PDATE as 发帖日期,TITLE as 标题,PTEXT as 内容,LV as 等级 from POST where UID='" + Quid + "' ";
if (Qpid.Length > 0)
{
sql += " and PID='" + Qpid + "' ";
}
if (Qtime.Length > 0)
{
sql += " and PDATE BETWEEN '" + Qtime + " 00:00:00' and '" + Qtime + " 23:59:59' ";
}
sql += " order by PDATE";
DB.SQLHelper Querypost = new DB.SQLHelper();
DataSet ds = Querypost.GetDataSet(sql);
DataTable dt = ds.Tables[0];
dataGridViewpost.DataSource = dt;
if (dt.Rows.Count == 0)
{
dataGridViewpost.ContextMenuStrip = null;//删除菜单在无数据时不显示
MessageBox.Show("没有符合条件的帖子记录！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
dataGridViewpost.ContextMenuStrip = deleteMenuStrip;
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
private void Loginin_Click(object sender, EventArgs e)
{
string userUID = this.txtUserName.Text.Trim();
string userPassword = this.txtPassword.Text.Trim();
// 验证数据
// 验证用户输入是否为空，若为空，提示用户信息
if (userUID.Equals("") || userPassword.Equals(""))
{
MessageBox.Show("用户名或密码不能为空！");
}
// 若不为空，验证用户名和密码是否与数据库匹配
// 这里只做字符串对比验证
else
{
//用户名和密码验证正确，提示成功，并执行跳转界面。
try
{
string User = "******" + userUID + "' And PASSWORD='******'";
string userName = "******" + userUID + "'";
string userSex = "SELECT SEX from UI where UID='" + userUID + "'";
string userAge = "SELECT AGE from UI where UID='" + userUID + "'";
string userOcc = "SELECT OCC from UI where UID='" + userUID + "'";
string userHob = "SELECT HOB from UI where UID='" + userUID + "'";
DB.SQLHelper loginthesystem = new DB.SQLHelper();
SqlDataReader read1 = loginthesystem.read(User);
SqlDataReader readname = loginthesystem.read(userName);
SqlDataReader readsex = loginthesystem.read(userSex);
SqlDataReader readage = loginthesystem.read(userAge);
SqlDataReader readocc = loginthesystem.read(userOcc);
SqlDataReader readhob = loginthesystem.read(userHob);
if (read1.Read())
{
MessageBox.Show("登录成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
DB.UserData.PublicValue.UserID = userUID;
DB.UserData.PublicValue.UserPassword = userPassword;
readname.Read();
DB.UserData.PublicValue.UserName = readname[0].ToString(); //将名字存入全局变量
readsex.Read();
DB.UserData.PublicValue.UserSex = readsex[0].ToString(); //将性别存入全局变量
readage.Read();
DB.UserData.PublicValue.UserAge = readage[0].ToString(); //将年龄存入全局变量
readocc.Read();
DB.UserData.PublicValue.UserOcc = readocc[0].ToString(); //将职业存入全局变量
readhob.Read();
DB.UserData.PublicValue.UserHob = readhob[0].ToString(); //将爱好存入全局变量
MainSystem.WindowsOfUser From2 = new MainSystem.WindowsOfUser();
From2.Show();
this.Hide();
}
//用户名和密码验证错误，提示错误。
else
{
MessageBox.Show("用户名或密码错误！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
