My customer has two table in his eCommerce DB
No(PK), PropertyName
and
No(PK), ProductNo(FK), PropertyNo(FK), Value
He just want me to make a table like that
+-----------+-------------+--------------+------------+
| | Property 1 | Property 2 | .. all properties-> |
+-----------+-------------+--------------+------------+
| Product1 | x | 4 | x |
| Product2 | 2 | x | 1 |
| Product3 | x | x | x |
| ... | | | |
| (all products) | | |
+----+-------------+---------------------+------------+
I tried to make it via repeater but i couldn't. How can I achieve it?
I give up and made the solution as @Bala R But a little changes...
The sample classes
public class list {
public int No { get; set; }
public string PropertyName { get; set; }
}
public class list2 {
public int ProductNo { get; set; }
public int PropertyNo { get; set; }
public int Value { get; set; }
}
public class list3 {
public string ProductName { get; set; }
public int No { get; set; }
}
The sample lists,
List<list> propertyList = new List<list>();
List<list2> propertyProductList = new List<list2>();
List<list3> productList = new List<list3>();
propertyList.Add(new list { No = 1, PropertyName= "Property 1" });
propertyList.Add(new list { No = 2, PropertyName = "Property 2" });
propertyList.Add(new list { No = 3, PropertyName = "Property 3" });
propertyList.Add(new list { No = 4, PropertyName = "Property 4" });
propertyProductList.Add(new list2 { ProductNo = 1, PropertyNo = 1, Value = 3 });
propertyProductList.Add(new list2 { ProductNo = 2, PropertyNo = 3, Value = 13 });
propertyProductList.Add(new list2 { ProductNo = 2, PropertyNo = 2, Value = 8 });
propertyProductList.Add(new list2 { ProductNo = 3, PropertyNo = 2, Value = 6 });
propertyProductList.Add(new list2 { ProductNo = 4, PropertyNo = 1, Value = 2 });
propertyProductList.Add(new list2 { ProductNo = 3, PropertyNo = 1, Value = 55 });
productList.Add(new list3 { No = 1, ProductName = "Ball" });
productList.Add(new list3 { No = 2, ProductName = "Book" });
productList.Add(new list3 { No = 3, ProductName = "Pencil" });
productList.Add(new list3 { No = 4, ProductName = "TV" });
and the solution,
var resultSet = (from c in list2
group c by c.ProductNo into g
select new {
开发者_StackOverflow中文版 ProductNo = g.Key,
Value = g
}).ToList();
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("Products"));
foreach (var item in list) {
dt.Columns.Add(new DataColumn() { ColumnName = item.PropertyName });
}
foreach (var item in resultSet) {
DataRow dr = dt.NewRow();
dr["Products"] = list3.First(p=> p.No== item.ProductNo).ProductName;
foreach (var item2 in item.Value) {
dr[list.First(l=>l.No == item2.PropertyNo).PropertyName] = item2.Value;
}
dt.Rows.Add(dr);
}
dataGrid1.DataSource = dt;
dataGrid1.DataBind();
You can create classes like this
class Product
{
public int ProductNo { get; set; }
public string ProductName { get; set; }
}
class Property
{
public int PropertyNo { get; set; }
public string PropertyName { get; set; }
}
class Value
{
public int ProductPropertyNo { get; set; }
public int ProductNo { get; set; }
public int PropertyNo { get; set; }
public string Value { get; set; }
}
and load enumerations
IEnumerable<Product> products = GetProducts();
IEnumerable<Property> properties = GetProperties();
IEnumerable<Value> values = GetValues();
and do something like this for DataTable
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("ProductName"));
foreach (var propNo in values.Select(v => v.PropertyNo).Distinct())
{
dt.Columns.Add(
new DataColumn(properties.Where(p => p.PropertyNo == propNo).First().PropertyName));
}
foreach (var prodNo in values.Select(v => v.ProductNo).Distinct())
{
Product prod = products.Where(p => p.ProductNo == prodNo).First();
DataRow dr = dt.NewRow();
dr["ProductName"] = prod.ProductName;
foreach (var value in values.Where(v => v.ProductNo == prodNo))
{
Property prop = properties.Where(p => p.PropertyNo == value.PropertyNo).First();
dr[prop.PropertyName] = value.Value;
}
}
I'm not a big fan of DataTable
but in this case it's the easiest way to achieve that. Create first a Column "Product" and then for each property create a new Column on the DataTable
.
Add DataRows
for all your Products and fill out the Value in the appropriate Property Column.
Afterwards bind the DataTable
to a DataGrid
.
using Modabber.Web.Common;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.UI;
namespace Modabber.Web.Modules.WorkBook.Generator
{
public partial class PercentStudyHomeworkStudentRpt : Page
{
public List<Rpt> result { get; set; } = new List<Rpt>();
public string HideAverage { get; set; }
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
InitializeComponent();
}
private void InitializeComponent()
{
Load += Page_Load;
}
protected void Page_Load(object sender, EventArgs e)
{
// get the result list from DB
result.Add(new Rpt { CourseTitle = "فیزیک", Grade = 10, Taraz = 20 });
result.Add(new Rpt { CourseTitle = "2ریاضی", Grade = 30, Taraz = 40 });
// generate these courses from result list
var courses = new List<string>() { "2ریاضی", "فیزیک" };
rptrCourses1.DataSource = from c in courses select new { Title = c };
rptrCourses1.DataBind();
rptrCourses2.DataSource = from c in courses select new { Title = c };
rptrCourses2.DataBind();
rptrCourses3.DataSource = from c in courses select new { Title = c };
rptrCourses3.DataBind();
bool isShowTaraz = true;
if (isShowTaraz == false)
HideAverage = "display:none";
}
protected decimal GetGrade(string courseTitle)
{
return result.First(r => r.CourseTitle == courseTitle).Grade;
}
protected decimal GetTaraz(string courseTitle)
{
return result.First(r => r.CourseTitle == courseTitle).Taraz;
}
}
public class Rpt
{
public string CourseTitle { get; set; }
public decimal Grade { get; set; }
public decimal Taraz { get; set; }
}
}
aspx :
<%@ Page Language="C#" AutoEventWireup="false" CodeBehind="PercentStudyHomeworkStudentRpt.aspx.cs"
Inherits="Modabber.Web.Modules.WorkBook.Generator.PercentStudyHomeworkStudentRpt" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<style type="text/css">
.ltrClass {
direction: ltr;
}
.auto-style1 {
width: 50%;
}
table {
/*font-family: arial, sans-serif;*/
border-collapse: collapse;
width: 100%;
direction: rtl;
font: 9pt 'b roya',roya;
}
th {
border: 1px solid;
padding: 0px;
text-align: center;
font-weight: bold;
background-color: lightgray;
font: 9pt 'b roya',roya;
max-height: 10px;
}
td {
border: 1px solid;
padding: 0px;
text-align: center;
font: 9pt 'b roya',roya;
}
</style>
<head runat="server"></head>
<body style="direction: rtl;">
<div style="text-align: center; margin-bottom: 5px;">نتایج کسب شده آزمونها</div>
<table style="width: 100%; /*margin-top: 15px; */ font: 8pt 'b roya',roya;">
<tr>
<td></td>
<asp:Repeater ID="rptrCourses1" runat="server">
<ItemTemplate>
<td><%# Eval("Title") %></td>
</ItemTemplate>
</asp:Repeater>
</tr>
<tr>
<td>درصد</td>
<asp:Repeater ID="rptrCourses2" runat="server">
<ItemTemplate>
<td><%# GetGrade(Eval("Title").ToString()) %></td>
</ItemTemplate>
</asp:Repeater>
</tr>
<tr style="<%= HideAverage %>">
<td >تراز</td>
<asp:Repeater ID="rptrCourses3" runat="server">
<ItemTemplate>
<td><%# GetTaraz(Eval("Title").ToString()) %></td>
</ItemTemplate>
</asp:Repeater>
</tr>
</table>
</body>
</html>
Code Behind :
protected global::System.Web.UI.WebControls.Repeater rptrCourses1;
protected global::System.Web.UI.WebControls.Repeater rptrCourses2;
protected global::System.Web.UI.WebControls.Repeater rptrCourses3;
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