使用MVVM(没有代码隐藏),我想在选择时隐藏我的DataGrid列,我有以下代码:
<DataGrid ItemsSource="{Binding SSID}" Grid.Row="1" Margin="10,10,0,0" Height="200" Width="500" Grid.ColumnSpan="2" Name="dg" HorizontalAlignment="Left" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTextColumn Header="Network ID" Binding="{Binding _networkID}"></DataGridTextColumn>
<DataGridTextColumn Header="SSID" Binding="{Binding _ssid}"></DataGridTextColumn>
<DataGridTextColumn Header="VLAN" Binding="{Binding _vlan}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _authenticationMode}" Binding="{Binding _authenticationMode}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _authentication}" Binding="{Binding _authentication}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _staticWEPKeyType}" Binding="{Binding _staticWEPKeyType}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _staticWEPKeyLength}" Binding="{Binding _staticWEPKeyLength}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _staticWEPKey1}" Binding="{Binding _staticWEPKey1}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _staticWEPKey2}" Binding="{Binding _staticWEPKey2}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _staticWEPKey3}" Binding="{Binding _staticWEPKey3}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _staticWEPKey4}" Binding="{Binding _staticWEPKey4}"></DataGridTextColumn>
<DataGridTextColumn Visibility="{Binding _wpaPersonalKeyAC}" Binding="{Binding _wpaPersonalKeyAC}"></DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
C#代码是:
var ssid = new SSIDPropertyClass();
ssid._networkID …我有以下WPF示例程序:
XAML:
<Window x:Class="AncestorArie.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<BooleanToVisibilityConverter x:Key="BoolToVis" />
</Window.Resources>
<Grid>
<DataGrid AutoGenerateColumns="False" Name="Blumen"
ItemsSource="{Binding Leaves}">
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding Color}"
Header="Farbe" Width="160" />
<DataGridTextColumn Binding="{Binding Size}"
Header="Größe" Width="60"
Visibility="{Binding Path=DataContext.Flag,
RelativeSource={RelativeSource Findancestor,
AncestorType={x:Type Window}},
Converter={StaticResource BoolToVis}}" />
</DataGrid.Columns>
</DataGrid>
</Grid>
</Window>
代码背后:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
Flowers rose = new Flowers();
rose.Leaves = new ObservableCollection<Leaf>();
rose.Flag = false;
Leaf L1 = new Leaf();
L1.Color = "rot";
L1.Size = 3; …我正在使用以下WPF DataGrid + ComboBox方案来疯狂.
我有一组看起来像的课程;
class Owner
{
int ID { get; }
string Name { get; }
public override ToString()
{
return this.Name;
}
}
class House
{
int ID { get; }
Owner HouseOwner { get; set; }
}
class ViewModel
{
ObservableCollection<Owner> Owners;
ObservableCollection<House> Houses
}
现在我想要的结果是一个DataGrid,它显示了House类型的行列表,在其中一列中,是一个ComboBox,它允许用户更改House.HouseOwner的值.
在这种情况下,网格的DataContext是ViewModel.Houses,对于ComboBox,我希望ItemsSource绑定到ViewModel.Owners.
这甚至可能吗？我正在努力解决这个问题...我能做的最好的事情就是正确地绑定ItemsSource,但是ComboBox(在DataGridTemplateColumn中)没有在每一行中显示House.HouseOwner的正确值.
注意:如果我将ComboBox从图片中取出并将TextBlock放入DataTemplate中,我可以正确地看到每行的值,但同时获取ItemsSource以及在选择中显示正确的值对我来说不起作用...
里面的背后我的代码,我已经设置窗口在DataContext到视图模型和对电网的DataContext设置ViewModel.Houses.对于除这个组合框之外的所有东西,它正在工作......
我的XAML对于违规列看起来像;
<DataGridTemplateColumn Header="HouseOwner">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<ComboBox ItemsSource="{Binding Path=DataContext.Owners, RelativeSource={RelativeSource AncestorType={x:Type Window}}}"
DisplayMemberPath="Name"
SelectedItem="{Binding HouseOwner, RelativeSource={RelativeSource AncestorType={x:Type …我正在开发wpf(mvvm模式)的产品.我有一个场景,我已经花了一个多星期没有好结果.如果可以,请帮助我......这是场景,根据用户的自定义(用户ll选择列),我必须在datagrid中显示一组数据.目前我正在将带有一组属性的ObservableCollection绑定到datagrid的itemsource.这限制了我固定的列大小.注意:列出了n个列名称供用户选择.如果通过"datagrid.columns.add()"轻松完成后面的代码.在这种情况下,任何人都可以帮助我.
我的xaml:
<my:DataGrid AutoGenerateColumns="False" Margin="357,121.723,82,41" Name="dataGrid3" c:DataGridExtension.Columns="{Binding ColumnCollection}" />
我的命令类:
public static class DataGridExtension
{
public static ObservableCollection<DataGridColumn> GetColumns(DependencyObject obj)
{
return (ObservableCollection<DataGridColumn>)obj.GetValue(ColumnsProperty);
}
public static void SetColumns(DependencyObject obj, ObservableCollection<DataGridColumn> value)
{
obj.SetValue(ColumnsProperty, value);
}
public static readonly DependencyProperty ColumnsProperty =
DependencyProperty.RegisterAttached("Columns", typeof(ObservableCollection<DataGridColumn>),typeof(DataGridExtension),
new UIPropertyMetadata (new ObservableCollection<DataGridColumn>(), OnDataGridColumnsPropertyChanged));
private static void OnDataGridColumnsPropertyChanged(DependencyObject d,
DependencyPropertyChangedEventArgs e)
{
if (d.GetType() == typeof(DataGrid))
{
DataGrid myGrid = d as DataGrid;
ObservableCollection<DataGridColumn> Columns = (ObservableCollection<DataGridColumn>)e.NewValue;
if (Columns != null)
{
myGrid.Columns.Clear();
if (Columns != …我在WPF中有一个带有DataGridTextColum和DataGridTemplateColum的数据网格.
<DataGridTextColumn Width="4*" IsReadOnly="True" x:Name="dataGridColumnDescription"
Header="Description" Binding="{Binding Description}">
</DataGridTextColumn>
<DataGridTemplateColumn CellStyle="{StaticResource CellEditing}" IsReadOnly="False" Width="*" Header="Value"
CellEditingTemplateSelector="{StaticResource myCellEditingTemplateSelectorValue}"
CellTemplateSelector="{StaticResource myCellTemplateSelectorValue}">
</DataGridTemplateColumn>
CellTemplateSelectors返回一个带有TextBlock的DataTemplate,用于Celltemplate resp.CellEditing的TextBox!
<DataTemplate x:Key="dGridStringValueTemplate">
<TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Text="{Binding Path=Value}"/>
</DataTemplate>
<DataTemplate x:Key="dGridStringValueTemplateEditing">
<TextBox TextAlignment="Center" VerticalAlignment="Center" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" BorderThickness="1" Text="{Binding Path=Value, UpdateSourceTrigger=LostFocus}"/>
</DataTemplate>
现在我想在DataGridCell获得焦点时自动聚焦TextBox.用户应该能够编辑TextBox内容而无需双击单元格.
我找到了这篇文章:
DataGrid提示与技巧:单击编辑 ,我可以获取当前DataGridCell,但是如何访问内容以使文本框成为编辑内容的焦点？
这是我的风格:
<Style x:Key="CellEditing" TargetType="{x:Type DataGridCell}">
<EventSetter Event="PreviewMouseLeftButtonDown" Handler="myDataGridMain_PreviewMouseLeftButtonDown"></EventSetter>
</Style>
这是我的事件处理程序:
private void myDataGridMain_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
DataGridCell cell = sender as DataGridCell; // cell ist not null
DataGridTemplateColumn col …我有两个datagrids,每个都有一列.第一:
<DataGrid.Columns>
<DataGridTextColumn x:Name="FilterTextCol01"
IsReadOnly="False"
Width="{Binding ElementName=TextCol01, Path=ActualWidth, Mode=TwoWay}" />
</DataGrid.Columns>
第二:
<DataGridTextColumn CellStyle="{StaticResource DataGridColumnContentLeft}"
local:DataGridUtil.Name="TextCol01"
x:Name="TextCol01"
Header="TextCol01"
SortMemberPath="TextCol01"
Binding="{Binding TextCol01}"
Width="Auto"
IsReadOnly="True"/>
第一列的宽度与第二列的宽度的绑定不起作用.如果我在代码中这样做:
FilterTextCol01.Width = TextCol01.ActualWidth;
有用.谁能告诉我为什么第一种方法不起作用？
我在WPF中将a绑定List到a时遇到问题DataGrid.让我解释一下我的尝试.
public struct SomeInfo
{
public string Name;
public string Description;
public string ID;
}
List<SomeInfo> arrSomeInfo;
在arrSomeInfo包含结构的多个项目SomeInfo.
在DataGrid看起来像:
<DataGrid Name="grdMailbag" AutoGenerateColumns="False" ItemsSource="{Binding}">
<DataGrid.Columns>
<DataGridTextColumn x:Name="cID" Binding="{Binding ID}" Header="ID" />
<DataGridTextColumn x:Name="cName" Binding="{Binding Name}" Header="Name" />
<DataGridTextColumn x:Name="cDescription" Binding="{Binding Description}" Header="Description" />
</DataGrid.Columns>
</DataGrid>
我试过以下没有成功:
this.grdMailbag.ItemsSource = arrSomeInfo; //Didn't worked
this.grdMailbag.DataContext= arrSomeInfo; // Didn't worked
发生的事情是它按行添加行,List arrSomeInfo但所有行都是空白的.
我需要根据要绑定的对象中标识的单元系统确定运行时StringFormat的某些TextBlocks绑定.
我有一个具有依赖属性的转换器,我想绑定.Bound值用于确定转换过程.
public class UnitConverter : DependencyObject, IValueConverter
{
public static readonly DependencyProperty IsMetricProperty =
DependencyProperty.Register("IsMetric", typeof(bool), typeof(UnitConverter), new PropertyMetadata(true, ValueChanged));
private static void ValueChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
{
((UnitConverter)source).IsMetric = (bool)e.NewValue;
}
public bool IsMetric
{
get { return (bool)this.GetValue(IsMetricProperty); }
set { this.SetValue(IsMetricProperty, value); }
}
object IValueConverter.Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (IsMetric)
return string.Format("{0:0.0}", value);
else
return string.Format("{0:0.000}", value);
}
object IValueConverter.ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo …我有一个WPF窗口,其视图模型设置为其DataContext,并且具有一个带有DataTemplate的ListBox,其ItemsSource绑定到视图模型,如下例所示:
查看型号:
using System.Collections.Generic;
namespace Example
{
class Member
{
public string Name { get; set; }
public int Age { get; set; }
}
class Team
{
private List<Member> members = new List<Member>();
public string TeamName { get; set; }
public List<Member> Members { get { return members; } }
}
}
MainWindow.xaml:
<Window x:Class="Example.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:l="clr-namespace:Example"
Title="Example" Height="300" Width="300" Name="Main">
<Window.DataContext>
<l:Team TeamName="The best team">
<l:Team.Members>
<l:Member Name="John Doe" Age="23"/>
<l:Member Name="Jane Smith" Age="20"/>
<l:Member Name="Max Steel" …我有以下(简化)风格:
<Style x:Key="MyStyle" TargetType="{x:Type CheckBox}">
<Setter Property="Background" Value="Blue" />
</Style>
如果我在DataGridCheckBoxColumn中将它用作ElementStyle AND EditingElementStyle:
<DataGridCheckBoxColumn Binding="{Binding IsEnabled}"
ElementStyle="{StaticResource MyStyle}"
EditingElementStyle="{StaticResource MyStyle}" />
然后,IsEnabled当我选中/取消选中行的复选框时,我的绑定不会切换.如果我删除ElementStyle,EditingElementStyle或两者,那么绑定更新没有问题.为什么是这样？!
此外,我尝试使用以下代码解决此问题:
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding IsEnabled}"/>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
但问题仍然存在.
wpf ×10
datagrid ×8
c# ×7
data-binding ×4
xaml ×4
binding ×3
mvvm ×3
.net ×1
combobox ×1
datatemplate ×1