Wpf 向ObjectDataProvider添加静态资源的语法
我正在创建几个要添加到ObjectDataProvider的静态资源,但我无法理解其语法Wpf 向ObjectDataProvider添加静态资源的语法,wpf,staticresource,objectdataprovider,Wpf,Staticresource,Objectdataprovider,我正在创建几个要添加到ObjectDataProvider的静态资源,但我无法理解其语法 <Window.Resources> <SolidColorBrush x:Key="SolidFillBrush" Color="Black" Opacity="1.0" /> <SolidColorBrush x:Key="HalfOpaqueBrush" Color="Black" Opacity="0.5" /> <SolidCo
<Window.Resources>
<SolidColorBrush x:Key="SolidFillBrush" Color="Black" Opacity="1.0" />
<SolidColorBrush x:Key="HalfOpaqueBrush" Color="Black" Opacity="0.5" />
<SolidColorBrush x:Key="QuarterOpaqueBrush" Color="Black" Opacity="0.25" />
<SolidColorBrush x:Key="TransparentBrush" Color="Black" Opacity="0" />
<ObjectDataProvider x:Key="AllFillStyles" ObjectType="{x:Type Brush}" MethodName="???">
<!-- add the static resources here, but how? -->
</ObjectDataProvider>
</Window.Resources>
有什么建议吗
编辑:我试图创建一个包含上述笔刷的组合框,以便用户可以选择使用哪个笔刷作为网格的填充样式(有点像Excel中,在Excel中可以选择填充样式和颜色)。我需要设置ItemsSource,并找到有人使用ObjectDataProvider的位置。我发现您可以在xaml中创建一个数组,并用画笔填充它,然后改用它。一个关于如何使用
ObjectDataProvider
的示例MethodName
是获取项目时尝试调用的方法的名称
在您的xaml文件中
<ObjectDataProvider x:Key="objDs"
ObjectType="{x:Type data:CDataAccess}"
MethodName="GetEmployees">
</ObjectDataProvider>
public class CDataAccess
{
ObservableCollection<ImageEmployee> _EmpCollection;
public ObservableCollection<ImageEmployee> EmpCollection
{
get { return _EmpCollection; }
set { _EmpCollection = value; }
}
public CDataAccess()
{
_EmpCollection = new ObservableCollection<ImageEmployee>();
}
public ObservableCollection<ImageEmployee> GetEmployees()
{
SqlConnection conn =
new SqlConnection("Data Source=.;Initial Catalog=Company;" +
"Integrated Security=SSPI");
SqlCommand cmd = new SqlCommand();
conn.Open();
cmd.Connection = conn;
cmd.CommandText = "Select * from ImageEmployee";
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
EmpCollection.Add(
new ImageEmployee()
{
EmpNo = Convert.ToInt32(reader["EmpNo"]),
EmpName = reader["EmpName"].ToString(),
Salary = Convert.ToInt32(reader["Salary"]),
DeptNo = Convert.ToInt32(reader["DeptNo"]),
EmpImage = (byte[])reader["EmpImage"]
});
}
reader.Close();
conn.Close();
return EmpCollection;
}
}
并确保参数类型与之匹配。我不知道ObjectDataProvider的真正目标是什么 如果您想使用标识资源键(SolidColorBrush对象)的不同参数调用对象AllFillStyle上的某个方法 例如:
- AllFileStyle.GetBrush(“SolidFillBrush”)
- 获取画笔(“半不透明画笔”)
- 等
<ListBox x:Name="ListBoxBrushes"
Grid.Row="0"
Margin="5"
ItemsSource="{Binding Path=WindowBrushes, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<Ellipse Width="30"
Height="30"
Stroke="Black"
StrokeThickness="1"
Fill="{Binding}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Rectangle Grid.Row="1"
Margin="5"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Fill="{Binding ElementName=ListBoxBrushes, Path=SelectedItem}"/>
您可以在代码中填充SolidColorBrush的所有资源类型
private ObservableCollection<SolidColorBrush> _windowBrushes;
public ObservableCollection<SolidColorBrush> WindowBrushes
{
get
{
return _windowBrushes;
}
set
{
_windowBrushes = value;
OnPropertyChanged("WindowBrushes");
}
}
private void MainWindow_OnLoaded(object sender, RoutedEventArgs e)
{
WindowBrushes = new ObservableCollection<SolidColorBrush>();
foreach (var resource in this.Resources.Values)
{
SolidColorBrush brush = resource as SolidColorBrush;
if (brush!=null)
{
WindowBrushes.Add(brush);
}
}
}
private-observeCollection\u窗口笔刷;
公共可观察收集窗口刷
{
收到
{
返回窗口刷;
}
设置
{
_窗口笔刷=值;
OnPropertyChanged(“窗刷”);
}
}
私有void主窗口\u已加载(对象发送方,路由目标)
{
WindowBrush=新的ObservableCollection();
foreach(this.Resources.Values中的var资源)
{
SolidColorBrush=作为SolidColorBrush的资源;
如果(画笔!=null)
{
窗口笔刷。添加(笔刷);
}
}
}
然后在XAML中使用
<ListBox x:Name="ListBoxBrushes"
Grid.Row="0"
Margin="5"
ItemsSource="{Binding Path=WindowBrushes, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<Ellipse Width="30"
Height="30"
Stroke="Black"
StrokeThickness="1"
Fill="{Binding}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Rectangle Grid.Row="1"
Margin="5"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Fill="{Binding ElementName=ListBoxBrushes, Path=SelectedItem}"/>
您可以使用ObjectDataProvider指定您的场景吗
谢谢