//Insert data
public bool Insert(ContactCustomer c)
{
// create return type value to false
bool isSuccess = false;
//1.connect database
SqlConnection conn = new SqlConnection(myconnstrng);
// return isSuccess;
try
{
//2.sql query to insert
string sql = "INSERT INTO tblContact (CustomerName, ContactNo, Email ) VALUES(@CustomerName, @ContactNo, @Email)";
//create SQL command using sql and conn
SqlCommand cmd = new SqlCommand(sql, conn);
//Parameters to add data
cmd.Parameters.AddWithValue("@CustomerName", c.CustomerName);
cmd.Parameters.AddWithValue("@ContactNo", c.ContactNo);
cmd.Parameters.AddWithValue("@Email", c.Email);
//open connection
conn.Open();
int rows = cmd.ExecuteNonQuery();
//if sucessful ..method
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception)
{
}
finally
{
conn.Close();
}
return(isSuccess);
}
//DELETE
public bool Delete(ContactCustomer c)
{
//default return
bool isSuccess = false;
//Sql connection
SqlConnection conn = new SqlConnection(myconnstrng);
try
{
//sql to delte data
string sql = "DELETE FROM tblContact WHERE CustomerID=@CustomerID";
//sql command
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.Parameters.AddWithValue("CustomerID", c.CustomerID);
//open connection
conn.Open();
int rows = cmd.ExecuteNonQuery();
//method
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception)
{
}
finally
{
//close connection
conn.Close();
}
return(isSuccess);
}
//UPDATE values
public bool Update(ContactCustomer c)
{
//default type to false
bool isSuccess = false;
SqlConnection conn = new SqlConnection(myconnstrng);
try
{
//update data in database
string sql = "UPDATE tblContact SET CustomerName=@CustomerName, ContactNo=@ContactNo, Email=@Email WHERE CustomerID=@CustomerID";
//SQL command
SqlCommand cmd = new SqlCommand(sql, conn);
//parameters to value
cmd.Parameters.AddWithValue("@CustomerName", c.CustomerName);
cmd.Parameters.AddWithValue("@ContactNo", c.ContactNo);
cmd.Parameters.AddWithValue("@Email", c.Email);
cmd.Parameters.AddWithValue("@CustomerID", c.CustomerID);
// database conection
conn.Open();
int rows = cmd.ExecuteNonQuery();
//if sucecc method
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception)
{
}
finally
{
conn.Close();
}
return(isSuccess);
}
