public bool Insert(invertarKlasa c)
{
//Create a boolean var and set its default value to false
bool isSuccess = false;
//Create an object of SqlConnection to connect DB
SqlConnection conn = new SqlConnection(myconnstrng);
if (c.sprava != "" && c.kolicina != 0)
{
try
{
//Create a string var to store the insert query
String sql = "INSERT INTO tblInvertar(sprava,kolicina) VALUES (@sprava,@kolicina)";
//Create an SQL command to pass the value in our query
SqlCommand cmd = new SqlCommand(sql, conn);
//Create the paramater to get value from UI and pass it to SQL query above
cmd.Parameters.AddWithValue("@sprava", c.sprava);
cmd.Parameters.AddWithValue("@kolicina", c.kolicina);
//Open DB connection
conn.Open();
//INT value to hold the value after query is executed
int rows = cmd.ExecuteNonQuery();
if (rows > 0)
{
//Query executed successfully
isSuccess = true;
}
else
{
//Failed to execute query
isSuccess = false;
}
}
catch (Exception ex)
{
//Display error mssg if there is any exceptional errors
MessageBox.Show(ex.Message);
}
finally
{
//Close DB connection
conn.Close();
}
return(isSuccess);
}
else
{
MessageBox.Show("Niste unijeli ili naziv opreme ili količinu", "Upozorenje!");
return(false);
}
}
public bool Update(invertarKlasa c)
{
//Create a boolean var and set its default value to false
bool isSuccess = false;
//Create an object of SqlConnection to connect DB
SqlConnection conn = new SqlConnection(myconnstrng);
try
{
//Create a string var to store the insert query
String sql = "UPDATE tblInvertar SET kolicina=@kolicina WHERE sprava=@sprava";
//Create an SQL command to pass the value in our query
SqlCommand cmd = new SqlCommand(sql, conn);
//Create the paramater to get value from UI and pass it to SQL query above
cmd.Parameters.AddWithValue("@sprava", c.sprava);
cmd.Parameters.AddWithValue("@kolicina", c.kolicina);
//Open DB connection
conn.Open();
//INT value to hold the value after query is executed
int rows = cmd.ExecuteNonQuery();
if (rows > 0)
{
//Query executed successfully
isSuccess = true;
}
else
{
//Failed to execute query
isSuccess = false;
}
}
catch (Exception ex)
{
//Display error mssg if there is any exceptional errors
MessageBox.Show(ex.Message);
}
finally
{
//Close DB connection
conn.Close();
}
return(isSuccess);
}
public bool Delete(invertarKlasa c)
{
bool isSuccess = false;
SqlConnection conn = new SqlConnection(myconnstrng);
try
{
String sql = "DELETE FROM tblInvertar WHERE sprava=@sprava AND kolicina=@kolicina";
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.Parameters.AddWithValue("@sprava", c.sprava);
cmd.Parameters.AddWithValue("@kolicina", c.kolicina);
conn.Open();
int rows = cmd.ExecuteNonQuery();
if (rows > 0)
{
//Query executed successfully
isSuccess = true;
}
else
{
//Failed to execute query
isSuccess = false;
}
}
catch (Exception ex)
{
//Display error mssg if there is any exceptional errors
MessageBox.Show(ex.Message);
}
finally
{
//Close DB connection
conn.Close();
}
return(isSuccess);
}