public bool InsertCategory(CategoriesAndResultsBLL cat) { bool isSuccess = false; SqlConnection conn = new SqlConnection(UserDAL.myconnstrng); try { string sql = "INSERT INTO tbl_Categories (CategoryNo, CategoryName) VALUES (@CategoryNo, @CategoryName)"; SqlCommand cmd = new SqlCommand(sql, conn); cmd.Parameters.AddWithValue("@CategoryNo", cat.CategoryNo); cmd.Parameters.AddWithValue("@CategoryName", cat.CategoryName); conn.Open(); int rows = cmd.ExecuteNonQuery(); // If the query is executed successfully then the value to rows will be greaten than 0 else it will be less than 0 if (rows > 0) { // Query successful isSuccess = true; } else { // Query failed isSuccess = false; } } catch (Exception ex) { // Throw message if any error occurs MessageBox.Show(ex.Message, "Insert data in Database Information!", MessageBoxButtons.OK, MessageBoxIcon.Information); } finally { conn.Close(); } return(isSuccess); }
public bool UpdateCategory(CategoriesAndResultsBLL cat) { bool isSuccess = false; SqlConnection conn = new SqlConnection(UserDAL.myconnstrng); try { string sql = "UPDATE tbl_Categories SET CategoryNo=@CategoryNo, CategoryName=@CategoryName WHERE CategoryNo=@CategoryNo"; SqlCommand cmd = new SqlCommand(sql, conn); cmd.Parameters.AddWithValue("@CategoryNo", cat.CategoryNo); cmd.Parameters.AddWithValue("@CategoryName", cat.CategoryName); conn.Open(); int rows = cmd.ExecuteNonQuery(); if (rows > 0) { // Query successful isSuccess = true; } else { // Query failed isSuccess = false; } } catch (Exception ex) { // Throw message if any error occurs MessageBox.Show(ex.Message, "Update data in Database Information!", MessageBoxButtons.OK, MessageBoxIcon.Information); } finally { conn.Close(); } return(isSuccess); }
public bool DeleteResult(CategoriesAndResultsBLL res) { bool isSuccess = false; SqlConnection conn = new SqlConnection(UserDAL.myconnstrng); try { string sql = "DELETE FROM tbl_Results WHERE ResultNo=@ResultNo"; SqlCommand cmd = new SqlCommand(sql, conn); cmd.Parameters.AddWithValue("@ResultNo", res.ResultNo); conn.Open(); int rows = cmd.ExecuteNonQuery(); if (rows > 0) { // Query successful isSuccess = true; } else { // Query failed isSuccess = false; } } catch (Exception ex) { // Throw message if any error occurs MessageBox.Show(ex.Message, "Delete data from Database Information!", MessageBoxButtons.OK, MessageBoxIcon.Information); } finally { conn.Close(); } return(isSuccess); }