private void btn_Delete_Click(object sender, EventArgs e)
{
foreach (DataGridViewRow dgvr in this.dgv_Show.SelectedRows)
{
int selectedIndex = dgv_Show.SelectedRows[0].Index;
int rowID = 0;
DialogResult result;
result = MessageBox.Show("Are you sure you want to delete this record?", "Delete record", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
if (result == System.Windows.Forms.DialogResult.Yes)
{
try
{
rowID = int.Parse(dgv_Show[0, selectedIndex].Value.ToString());
cmd = new SqlCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "DELETE FROM " + department + " WHERE ID=" + rowID + "";
cmd.Connection = dbh.GetCon();
dbh.OpenCon();
try
{
cmd.ExecuteNonQuery();
}
catch
{
SqlCommand cmd2 = new SqlCommand();
cmd2.CommandType = CommandType.Text;
cmd2.CommandText = "UPDATE " + ConvertDepartment() + " SET " + ConvertSqlSet() + " WHERE " + ConvertSqlWhere(rowID) + "";
cmd2.Connection = dbh.GetCon();
cmd2.ExecuteNonQuery();
cmd.ExecuteNonQuery();
}
dbh.FillDataGridView(dgv_Show, "SELECT * FROM " + department);
dbh.CloseCon();
MessageBox.Show("Delete was succesful!", "Succes!");
}
catch
{
MessageBox.Show("Can't delete this record.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
private string[] getColumnsName()
{
List <string> listacolumnas = new List <string>();
using (SqlCommand command = dbh.GetCon().CreateCommand())
{
command.CommandText = "select c.name from sys.columns c inner join sys.tables t on t.object_id = c.object_id and t.name = '" + table + "' and t.type = 'U'";
dbh.OpenCon();
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
listacolumnas.Add(reader.GetString(0));
}
}
dbh.CloseCon();
}
return(listacolumnas.ToArray());
}
//Fills combobox with IDs and Names from the table defined in the custom constructor.
private void frm_Edit_Load(object sender, EventArgs e)
{
this.StartPosition = FormStartPosition.CenterScreen;
cmd = new SqlCommand("SELECT ID,Name FROM " + table + "", dbh.GetCon());
SqlDataReader reader;
dbh.OpenCon();
reader = cmd.ExecuteReader();
DataTable dt = new DataTable();
dt.Columns.Add("ID", typeof(string));
dt.Columns.Add("Name", typeof(string));
dt.Load(reader);
cb_Customers.ValueMember = "ID";
cb_Customers.DisplayMember = "Name";
cb_Customers.DataSource = dt;
dbh.CloseCon();
if (id != null)
{
cb_Customers.SelectedValue = id;
}
reader.Dispose();
}
public void LogIn(string user, string pass)
{
user = tb_Username.Text;
pass = tb_Password.Text;
string query = "SELECT * FROM TBL_LOGIN WHERE USERNAME = @USERNAME AND PASSWORD = @PASSWORD";
dbh.OpenCon();
SqlCommand com = new SqlCommand(query, dbh.GetCon());
com.Parameters.Add(new SqlParameter("@USERNAME", user));
com.Parameters.Add(new SqlParameter("@PASSWORD", pass));
SqlDataReader reader = com.ExecuteReader();
while (reader.Read())
{
uN = reader.GetString(0);
pW = reader.GetString(1);
}
if (uN == user && pW == pass)
{
MessageBox.Show("Login Successful.", "Succes!");
switch (uN)
{
case "Admin":
permissions = 1;
break;
case "Sales":
permissions = 2;
break;
case "Development":
permissions = 4;
break;
case "Finance":
permissions = 3;
break;
default:
MessageBox.Show("Er is iets fout gegaan bij 'IsLoggedIn()'");
permissions = 0;
break;
}
Form frmMain = new frm_Main(permissions);
frmMain.StartPosition = FormStartPosition.CenterScreen;
Program.setForm(frmMain);
this.Close();
}
else if (uN != user || pW != pass)
{
MessageBox.Show("Invalid Username and/or Password.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
dbh.CloseCon();
}