一、Binding是WPF的核心，WPF的数据源有以下几种：
1、ADO.NET中的DataTable
2、xml数据源
3、object数据源
4、元素控件属性
二、WPF绑定各种数据源索引
三、这里做一些简单的实例。
1.ListBox绑定Datatable数据源
前台代码
<ListBox Margin=
"12,32,12,329"
ItemsSource=
"{Binding}"
Name=
"listBox1"
>
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width=
"0.5*"
/>
<ColumnDefinition Width=
"0.5*"
/>
<ColumnDefinition Width=
"0.5*"
/>
</Grid.ColumnDefinitions>
<TextBlock Text=
"{Binding Path=ID}"
/>
<TextBlock Text=
"{Binding Path=Name}"
/>
<TextBlock Grid.Column=
"1"
Text=
"{Binding Path=Age}"
Background=
"{Binding Path=Age, Converter={StaticResource BackgroundConverter}}"
/>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
|
后台代码：
public
Window1()
{
InitializeComponent();
listBox1.DataContext = GetDataTable();
//使用ItemsSource的形式
//listBox1.ItemsSource = GetDataTable().DefaultView;
listBox1.SelectedIndex = 0;
}
|
下面是创建DataTable数据源，当然也可以连接数据库获得数据源
private
DataTable GetDataTable()
{
DataTable data =
new
DataTable(
"MyDataTable"
);
DataColumn ID =
new
DataColumn(
"ID"
);
//第一列
ID.DataType = System.Type.GetType(
"System.Int32"
);
//ID.AutoIncrement = true; //自动递增ID号
data.Columns.Add(ID);
//设置主键
DataColumn[] keys =
new
DataColumn[1];
keys[0] = ID;
data.PrimaryKey = keys;
data.Columns.Add(
new
DataColumn(
"Name"
,
typeof
(
string
)));
//第二列
data.Columns.Add(
new
DataColumn(
"Age"
,
typeof
(
string
)));
//第三列
data.Rows.Add(1,
" XiaoM"
,
" 20"
);
data.Rows.Add(2,
" XiaoF"
,
" 122"
);
data.Rows.Add(3,
" XiaoA"
,
" 29"
);
data.Rows.Add(4,
" XiaoB"
,
" 102"
);
return
data;
}
|
下面是类型转换
public
class
BackgroundConverter : IValueConverter
{
#region IValueConverter Members
public
object
Convert(
object
value, Type targetType,
object
parameter, System.Globalization.CultureInfo culture)
{
Color color =
new
Color();
int
num =
int
.Parse(value.ToString());
if
(num > 100)
color = Colors.Yellow;
else
if
(num < 50)
color = Colors.LightGreen;
else
color = Colors.LightPink;
return
new
SolidColorBrush(color);
}
public
object
ConvertBack(
object
value, Type targetType,
object
parameter, System.Globalization.CultureInfo culture)
{
throw
new
NotImplementedException();
}
#endregion
}
|
效果图：
2、使用ListView的形式绑定DataTable数据源，数据源与第一个是一样的，不同的地方是：
前台代码：
<ListView Height=
"262"
Margin=
"-12,0,12,39"
VerticalAlignment=
"Bottom"
ItemsSource=
"{Binding}"
Name=
"listView2"
HorizontalAlignment=
"Center"
>
<ListView.View>
<GridView>
<GridViewColumn Header=
"编号"
DisplayMemberBinding=
"{Binding Path=ID}"
Width=
"100"
/>
<GridViewColumn Header=
"姓名"
DisplayMemberBinding=
"{Binding Path=Name}"
Width=
"100"
/>
<GridViewColumn Header=
"年龄"
Width=
"100"
>
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Grid.Column=
"1"
Text=
"{Binding Path=Age}"
Foreground=
"{Binding Path=Age, Converter={StaticResource BackgroundConverter}}"
/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
|
后台代码：
listView2.DataContext = GetDataTable().DefaultView;
|
效果图：
3、如果数据源已经是DataTable，则使用LINQ检索结果的形式为:
DataTable dt = GetDataTable();
listView2.ItemsSource =
from
row
in
dt.Rows.Cast<DataRow>()
where
Convert.ToString(row[
"Name"
]).StartsWith(
"XiaoF"
)
select
new
Student()
{
ID =
int
.Parse(row[
"ID"
].ToString()),
Name = row[
"Name"
].ToString(),
Age = row[
"Age"
].ToString()
};
|
其它不变.上面的代码是检索Name以XiaoF开始的数据，只有一条数据。 效果图如下:
本文转自Work Hard Work Smart博客园博客，原文链接：http://www.cnblogs.com/linlf03/archive/2011/09/06/2168440.html，如需转载请自行联系原作者
