Example #1
0
        //Method to update data in database from our application
        public bool Update(ContactClass c)
        {
            //Create a default return type and set its default value to false
            bool          isSuccess = false;
            SqlConnection conn      = new SqlConnection(myconnstring);

            try
            {
                //Sql to update data in our Database
                string sql = "UPDATE tbl_contact SET FirstName=@FirstName, LastName=@LastName, ContactNo=@ContactNo, Address=@Address, Gender=@Gender WHERE ContactID=@ContactID";

                //Creating Sql Command
                SqlCommand cmd = new SqlCommand(sql, conn);
                //Creating Parameterss to add value
                cmd.Parameters.AddWithValue("@FirstName", c.FirstName);
                cmd.Parameters.AddWithValue("@LastName", c.LastName);
                cmd.Parameters.AddWithValue("@ContactNo", c.ContactNo);
                cmd.Parameters.AddWithValue("@Address", c.Address);
                cmd.Parameters.AddWithValue("@Gender", c.Gender);
                cmd.Parameters.AddWithValue("@ContactID", c.ContactID);

                //Open Database Connection
                conn.Open();

                int rows = cmd.ExecuteNonQuery();
                //If the query runs succefully then value of rows will be greater than zero else its value will be zero

                if (rows > 0)
                {
                    isSuccess = true;
                }
                else
                {
                    isSuccess = false;
                }
            }
            catch (Exception ex)
            {
            }
            finally
            {
                conn.Close();
            }
            return(isSuccess);
        }
Example #2
0
        //Inserting Data into Database
        public bool Insert(ContactClass c)
        {
            ///Creating a default return type and setting its value to false
            bool isSuccess = false;

            //Step 1: Connect Database
            SqlConnection conn = new SqlConnection(myconnstring);

            try
            {
                ///Step 2: Create a SQL query to insert  Data
                string sql = "INSERT INTO tbl_contact (FirstName, LastName, ContactNo, Address, Gender) VALUES (@FirstName, @LastName, @ContactNo, @Address, @Gender)";
                //Creating SQL Command using sql and conn
                SqlCommand cmd = new SqlCommand(sql, conn);
                //Creating Parameters to add data
                cmd.Parameters.AddWithValue("@FirstName", c.FirstName);
                cmd.Parameters.AddWithValue("@LastName", c.LastName);
                cmd.Parameters.AddWithValue("@ContactNo", c.ContactNo);
                cmd.Parameters.AddWithValue("@Address", c.Address);
                cmd.Parameters.AddWithValue("@Gender", c.Gender);

                //Connection Open Here
                conn.Open();
                int rows = cmd.ExecuteNonQuery();
                //If the query runs successfully then the value of rows will be greater than zero else its value will zero
                if (rows > 0)
                {
                    isSuccess = true;
                }
                else
                {
                    isSuccess = false;
                }
            }
            catch (Exception ex)
            {
            }
            finally
            {
                conn.Close();
            }
            return(isSuccess);
        }
Example #3
0
        //Method to Delete Data from Database
        public bool Delete(ContactClass c)
        {
            //Create a default value and set its value to false
            bool isSuccess = false;
            //Create SQL Connection
            SqlConnection conn = new SqlConnection(myconnstring);

            try
            {
                //SQL to Delete Data
                String sql = "DELETE FROM tbl_contact WHERE ContactID=@ContactID";

                //Creating SQL command
                SqlCommand cmd = new SqlCommand(sql, conn);
                cmd.Parameters.AddWithValue("@ContactID", c.ContactID);
                //Open Connection
                conn.Open();
                int rows = cmd.ExecuteNonQuery();
                //If the query runs successfully then value of rows will be greater than zero else its value will be zero
                if (rows > 0)
                {
                    isSuccess = true;
                }
                else
                {
                    isSuccess = false;
                }
            }
            catch (Exception ex)
            {
            }
            finally
            {
                //Close Connection
                conn.Close();
            }
            return(isSuccess);
        }