I.Introduction
Trong bài này mình xin chia sẽ cách Sắp xết dữ liệu trên Datagrid trong Silverlight .
II.Creating Silverlight Application
Fire Visual Studio 2010 and Create Silverlight Application Project :
Tiếp theo chúng ta làm một giao diện đơn giản gồm 1 DataGrid để chúng ta show dữ liệu:
Sau đây là code XAML giao diện :
<UserControl x:Class="SortDescriptionDataGrid.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400" xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk">
<Grid x:Name="LayoutRoot">
<Grid.RowDefinitions>
<RowDefinition Height="80"/>
<RowDefinition Height="20"/>
<RowDefinition Height="*"/>
<RowDefinition Height="40"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock FontSize="20" Margin="70,23,68,21">Sort Description in DataGrid</TextBlock>
<StackPanel Grid.Row="1">
<StackPanel.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0" />
<GradientStop Color="Black" Offset="1" />
<GradientStop Color="#FF757575" Offset="0.5" />
</LinearGradientBrush>
</StackPanel.Background>
</StackPanel>
<data:DataGrid Grid.Row="2" Name="myData" AutoGenerateColumns="True"/>
<Button Grid.Row="3"></Button>
<Grid.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF83BEBE" Offset="0" />
<GradientStop Color="White" Offset="1" />
</LinearGradientBrush>
</Grid.Background>
</Grid>
</UserControl>
Bây giờ chúng ta tạo một Basic Database :
public class User
{
string name;
public string Name { get { return name; } set { name = value; } }
string gender;
public string Gender { get { return gender; } set { gender = value; } }
int age;
public int Age { get { return age; } set { age = value; } }
string country;
public string Country { get { return country; } set { country = value; } }
}
Tiếp theo là chúng ta xử lý việc đưa Dữ liệu ra DataGrid trong Fille MainPage.XAML.cs :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.ComponentModel;
namespace SortDescriptionDataGrid
{
public partial class MainPage : UserControl
{
List<User> myList;
public MainPage()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(MainPage_Loaded);
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
myList = new List<User>{
new User{Name = "Phạm Nguyên",Gender="M",Age = 20,Country = "Viet Nam"},
new User{Name = "Phi Diệp",Gender="FM",Age = 20,Country = "Viet Nam"},
new User{Name = "Nhạc Linh Sang",Gender="FM",Age = 30,Country = "Hoa Sơn"},
new User{Name = "Lệnh Hồ Sung",Gender="M",Age = 20,Country = "Hoa Sơn"},
new User{Name = "Lý Tầm Quan",Gender="M",Age = 20,Country = "Trung Quốc"},
new User{Name = "Lâm Thi Âm",Gender="FM",Age = 20,Country = "Trung Quốc"},
new User{Name = "Ngọc Sơn",Gender="M",Age = 20,Country = "An Khê"},
new User{Name = "Chí Khang",Gender="M",Age = 20,Country = "Campuchia"},
new User{Name = "Trong Khoa",Gender="M",Age = 20,Country = "Campuchia"},
new User{Name = "Minh Phúc",Gender="M",Age = 20,Country = "Phat Xit Đức"},
new User{Name = "Quang Huy",Gender="M",Age = 20,Country = "Mỹ"},
new User{Name = "Ngọc Hiển",Gender="M",Age = 20,Country = "Lào"},
new User{Name = "Minh Sang",Gender="M",Age = 20,Country = "Mỹ"},
new User{Name = "Chân Tử Đan",Gender="M",Age = 20,Country = "Trung Quốc"},
};
myData.RowHeight = 30;
myData.ItemsSource = myList;
}
}
}
Bây giờ chúng ta thử Run Application(Ctrl + F5):
Tiếp theo chúng ta Sử dụng lớp PagedCollectionView để tạo một Collection dữ liệu và Sort nó khi Show ra ngoài :
1: using System;
2: using System.Collections.Generic;
3: using System.Linq;
4: using System.Net;
5: using System.Windows;
6: using System.Windows.Controls;
7: using System.Windows.Documents;
8: using System.Windows.Input;
9: using System.Windows.Media;
10: using System.Windows.Media.Animation;
11: using System.Windows.Shapes;
12: using System.Windows.Data;
13: using System.ComponentModel;
14:
15: namespace SortDescriptionDataGrid
16: {
17: public partial class MainPage : UserControl
18: {
19: List<User> myList;
20: public MainPage()
21: {
22: InitializeComponent();
23: this.Loaded += new RoutedEventHandler(MainPage_Loaded);
24: }
25:
26: void MainPage_Loaded(object sender, RoutedEventArgs e)
27: {
28: myList = new List<User>{
29: new User{Name = "Phạm Nguyên",Gender="M",Age = 20,Country = "Viet Nam"},
30: new User{Name = "Phi Diệp",Gender="FM",Age = 20,Country = "Viet Nam"},
31: new User{Name = "Nhạc Linh Sang",Gender="FM",Age = 30,Country = "Hoa Sơn"},
32: new User{Name = "Lệnh Hồ Sung",Gender="M",Age = 20,Country = "Hoa Sơn"},
33: new User{Name = "Lý Tầm Quan",Gender="M",Age = 20,Country = "Trung Quốc"},
34: new User{Name = "Lâm Thi Âm",Gender="FM",Age = 20,Country = "Trung Quốc"},
35: new User{Name = "Ngọc Sơn",Gender="M",Age = 20,Country = "An Khê"},
36: new User{Name = "Chí Khang",Gender="M",Age = 20,Country = "Campuchia"},
37: new User{Name = "Trong Khoa",Gender="M",Age = 20,Country = "Campuchia"},
38: new User{Name = "Minh Phúc",Gender="M",Age = 20,Country = "Phat Xit Đức"},
39: new User{Name = "Quang Huy",Gender="M",Age = 20,Country = "Mỹ"},
40: new User{Name = "Ngọc Hiển",Gender="M",Age = 20,Country = "Lào"},
41: new User{Name = "Minh Sang",Gender="M",Age = 20,Country = "Mỹ"},
42: new User{Name = "Chân Tử Đan",Gender="M",Age = 20,Country = "Trung Quốc"},
43: };
44:
45: PagedCollectionView Collection = new PagedCollectionView(myList);
46: Collection.SortDescriptions.Add(new SortDescription("Name",ListSortDirection.Ascending));
47: Collection.SortDescriptions.Add(new SortDescription("Country",ListSortDirection.Descending));
48:
49: myData.RowHeight = 30;
50: myData.ItemsSource = myList;
51: }
52: }
53: }
Với một vài dòng Code sử dụng PagedCollectionView chúng ta được kết quả sau :
Pham Nguyen 