public Device_Management_System()
{
InitializeComponent();
label1.Text = Account_n;
DBHelper db = new DBHelper();
string SqlText = "select * from Admin where Account='" + Account_n + "';";
DataSet data = db.DBselect(SqlText, null);
if (data.Tables[0].Rows.Count == 0)
{
db = new DBHelper();
SqlText = "select * from Users where Account='" + Account_n + "';";
data = db.DBselect(SqlText, null);
char Scope = Convert.ToChar(data.Tables[0].Rows[0][2]);
switch (Scope)
{
case 'A':
Refresh_SqlText = "select * from Borrow_Device_Input_List where Return_data is NUll union all select * from Borrow_Device_CellPhoneTablet_List where Return_data is NUll";
TableArr = new string [] { "Borrow_Device_Input_List", "Borrow_Device_CellPhoneTablet_List" };
break;
case 'B':
Refresh_SqlText = "select * from Borrow_Device_FlashStorage_List where Return_data is NUll union all select * from Borrow_Device_ODD_List where Return_data is NUll union all select * from Device_Others_List where Return_data is NUll";
TableArr = new string[] { "Borrow_Device_FlashStorage_List", "Borrow_Device_ODD_List", "Device_Others_List" };
break;
case 'C':
Refresh_SqlText = "select * from Borrow_Device_CardReader_List where Return_data is NUll union all select * from Borrow_Device_HUB_List where Return_data is NUll union all select * from Borrow_Device_Adapter_List where Return_data is NUll union all select * from Borrow_Device_MediaCard_List where Return_data is NUll union all select * from Borrow_Device_DongleCable_List where Return_data is NUll";
TableArr = new string[] { "Borrow_Device_CardReader_List", "Borrow_Device_HUB_List", "Borrow_Device_Adapter_List", "Borrow_Device_MediaCard_List", "Borrow_Device_DongleCable_List" };
break;
case 'D':
Refresh_SqlText = "select * from Borrow_Device_DisplayTV_List where Return_data is NUll";
TableArr = new string[] { "Borrow_Device_DisplayTV_List" };
break;
case 'E':
Refresh_SqlText = "select * from Borrow_Device_Audio_List where Return_data is NUll";
TableArr = new string[] { "Borrow_Device_Audio_List" };
break;
case 'F':
Refresh_SqlText = "select * from Borrow_Device_PrinterScanner_List where Return_data is NUll union all select * from Borrow_Device_AccessPointStation_List where Return_data is NUll union all select * from Borrow_Device_Switch_List where Return_data is NUll";
TableArr = new string[] { "Borrow_Device_PrinterScanner_List", "Borrow_Device_AccessPointStation_List", "Borrow_Device_Switch_List" };
break;
}
DGVset.Refresh(this);
DGVset.Set(this);
}
else
{
Borrow_button.Enabled = false;
Return_button.Enabled = false;
Not_Returned_button.Enabled = false;
Returned_log_button.Enabled = false;
Add_User_linkLabel.Visible = true;
}
}
private void Return_button_Click(object sender, EventArgs e)
{
string Identifier = Identifier_r_textBox.Text;
string Return_data = Returen_datatextBox.Text;
string Into_table_Name = "Log_Borrow_" + Account_n;
if (Identifier == "" || Return_data == "")
{
MessageBox.Show("Identifier and Return_data can not be empty!");
return;
}
string Id_f = Identifier.Substring(0, 1);
char Id_need = Convert.ToChar(Id_f);
string Table = "";
if (Identifier.Substring(0, 2) == "SP")
{
Table = "Borrow_Device_Audio_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "IP")
{
Table = "Borrow_Device_CellPhoneTablet_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "MC")
{
Table = "Borrow_Device_MediaCard_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "CA")
{
Table = "Borrow_Device_DongleCable_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "TV")
{
Table = "Borrow_Device_DisplayTV_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "SW")
{
Table = "Borrow_Device_Switch_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "CD")
{
Table = "Borrow_Device_Others_List";
goto Testc;
}
switch (Id_need)
{
case 'K':
Table = "Borrow_Device_Input_List";
break;
case 'M':
Table = "Borrow_Device_Input_List";
break;
case 'G':
Table = "Borrow_Device_Input_List";
break;
case 'F':
Table = "Borrow_Device_FlashStorage_List";
break;
case 'S':
Table = "Borrow_Device_FlashStorage_List";
break;
case 'O':
Table = "Borrow_Device_ODD_List";
break;
case 'C':
Table = "Borrow_Device_CardReader_List";
break;
case 'P':
Table = "Borrow_Device_PrinterScanner_List";
break;
case 'H':
Table = "Borrow_Device_HUB_List";
break;
case 'W':
Table = "Borrow_Device_AccessPointStation_List";
break;
case 'A':
Table = "Borrow_Device_Adapter_List";
break;
default:
Table = "Borrow_Device_Others_List";
break;
}
Testc:
DBHelper db = new DBHelper();
string Test_Table = Table.Remove(0, 7);
string SqlText = "select * from " + Test_Table + " where Identifier = '" + Identifier + "'";
DataSet data = db.DBselect(SqlText, null);
if (data.Tables[0].Rows.Count <= 0)
{
MessageBox.Show("This device does not exist.", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
db = new DBHelper();
SqlText = "select * from " + Table + " where Identifier = '" + Identifier + "'";
data = db.DBselect(SqlText, null);
if (data.Tables[0].Rows.Count <= 0)
{
MessageBox.Show("The device has returned or does not exist.", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
db = new DBHelper();
SqlText = "update " + Table + " set Return_data=N'" + Return_data + "' where Identifier = N'" + Identifier + "'";
data = db.DBselect(SqlText, null);
SqlText = "insert into " + Into_table_Name + "(Identifier,Borrower,Extension,Date_of_borrowing,Return_data,Remake) select * from " + Table + " where Identifier = '" + Identifier + "'";
db.DBselect(SqlText, null);
SqlText = "Delete from " + Table + " where Identifier='" + Identifier + "'";
db.DBselect(SqlText, null);
DGVset.Refresh(this);
DGVset.Set(this);
}
private void Borrow_button_Click(object sender, EventArgs e)
{
string Identifier = Identifier_textBox.Text;
string Borrower = Borrower_textBox.Text;
string Extension = Extension_textBox.Text;
string Date_of_borrowing = Date_of_borrowing_textBox.Text;
string Remake = Remake_textBox.Text;
if (Identifier == "" || Borrower == "" || Date_of_borrowing == "")
{
MessageBox.Show("Identifier, Borrower, Date_of_borrowing and Return_data can not be empty!", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
string Id_f = Identifier.Substring(0, 1);
char Id_need = Convert.ToChar(Id_f);
string Table = "";
if (Identifier.Substring(0, 2) == "SP")
{
Table = "Borrow_Device_Audio_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "IP")
{
Table = "Borrow_Device_CellPhoneTablet_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "MC")
{
Table = "Borrow_Device_MediaCard_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "CA")
{
Table = "Borrow_Device_DongleCable_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "TV")
{
Table = "Borrow_Device_DisplayTV_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "SW")
{
Table = "Borrow_Device_Switch_List";
goto Testc;
}
if (Identifier.Substring(0, 2) == "CD")
{
Table = "Borrow_Device_Others_List";
goto Testc;
}
switch (Id_need)
{
case 'K':
Table = "Borrow_Device_Input_List";
break;
case 'M':
Table = "Borrow_Device_Input_List";
break;
case 'G':
Table = "Borrow_Device_Input_List";
break;
case 'F':
Table = "Borrow_Device_FlashStorage_List";
break;
case 'S':
Table = "Borrow_Device_FlashStorage_List";
break;
case 'O':
Table = "Borrow_Device_ODD_List";
break;
case 'C':
Table = "Borrow_Device_CardReader_List";
break;
case 'P':
Table = "Borrow_Device_PrinterScanner_List";
break;
case 'H':
Table = "Borrow_Device_HUB_List";
break;
case 'W':
Table = "Borrow_Device_AccessPointStation_List";
break;
case 'A':
Table = "Borrow_Device_Adapter_List";
break;
default:
Table = "Borrow_Device_Others_List";
break;
}
Testc:
DBHelper db = new DBHelper();
string SqlText = "select * from " + Table + " where Identifier = '" + Identifier + "'";
DataSet data = db.DBselect(SqlText, null);
if (data.Tables[0].Rows.Count > 0)
{
MessageBox.Show("The device has been borrowed.", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
bool exists = ((IList)TableArr).Contains(Table);
if (!exists)
{
MessageBox.Show("This device does not belong to " + Account_n + " management.", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
db = new DBHelper();
string Test_Table = Table.Remove(0, 7);
SqlText = "select * from " + Test_Table + " where Identifier = '" + Identifier + "'";
data = db.DBselect(SqlText, null);
if (data.Tables[0].Rows.Count <= 0)
{
MessageBox.Show("This device does not exist.", "Prompt", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//label1.Text = Table;
db = new DBHelper();
SqlText = "insert into " + Table + " values(N\'" + Identifier + "\',N\'" + Borrower + "',N\'" + Extension + "\',N\'" + Date_of_borrowing + "\',null,N\'" + Remake + "')";
data = db.DBselect(SqlText, null);
DGVset.Refresh(this);
DGVset.Set(this);
}