All geek questions in one place

Silverlight-DataGrid control - Select Modified event that interferes with sorting

I am currently playing with the Silverlight (Beta 2) Datagrid control. Before I hooked up the SelectionChanged event, the grid will sort fine by clicking on the title. Now that the grid is clicked, it will fire the SelectionChanged event when I click the header to sort. Is there any way around this?

In a semi-related topic, I would like the SelectionChanged event fire to fire when I click on an already selected item (so that I may get a pop-up window allowing the user to edit the selected value). Right now you need to click another value and then go back to the desired value so that it appears. Is there another way?

My code is included.

Page:

<UserControl x:Class="WebServicesApp.Page"
xmlns="http://schemas.microsoft.com/client/2007" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"
Width="1280" Height="1024" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d">
<Grid x:Name="LayoutRoot" Background="White">
    <Grid.RowDefinitions>
        <RowDefinition />
        <RowDefinition />
    </Grid.RowDefinitions>
    <StackPanel Grid.Row="0" x:Name="OurStack" Orientation="Vertical" Margin="5,5,5,5">
        <ContentControl VerticalAlignment="Center" HorizontalAlignment="Center">
            <StackPanel x:Name="SearchStackPanel" Orientation="Horizontal" Margin="5,5,5,5">
                <TextBlock x:Name="SearchEmail" HorizontalAlignment="Stretch" VerticalAlignment="Center" Text="Email Address:" Margin="5,5,5,5" />
                <TextBox x:Name="InputText" HorizontalAlignment="Stretch" VerticalAlignment="Center" Width="150" Height="Auto" Margin="5,5,5,5"/>
                <Button x:Name="SearchButton" Content="Search" Click="CallServiceButton_Click" HorizontalAlignment="Center" VerticalAlignment="Center" Width="75" Height="Auto" Background="#FFAFAFAF" Margin="5,5,5,5"/>
            </StackPanel>               
        </ContentControl>
<Grid x:Name="DisplayRoot" Background="White" ShowGridLines="True"
                HorizontalAlignment="Center" VerticalAlignment="Center" MaxHeight="300" MinHeight="100" MaxWidth="800" MinWidth="200"
                ScrollViewer.HorizontalScrollBarVisibility="Visible" ScrollViewer.VerticalScrollBarVisibility="Visible">
<data:DataGrid ItemsSource="{Binding ''}" CanUserReorderColumns="False" CanUserResizeColumns="False"  
                           AutoGenerateColumns="False" AlternatingRowBackground="#FFAFAFAF" SelectionMode="Single" 
                           HorizontalAlignment="Center"  VerticalAlignment="Center" Margin="5,5,5,5" x:Name="IncidentGrid" SelectionChanged="IncidentGrid_SelectionChanged">
                <data:DataGrid.Columns>
                    <data:DataGridTextColumn DisplayMemberBinding="{Binding Address}" Header="Email Address" IsReadOnly="True"  /> <!--Width="150"-->
                    <data:DataGridTextColumn DisplayMemberBinding="{Binding whereClause}" Header="Where Clause" IsReadOnly="True"  /> <!--Width="500"--> 
                    <data:DataGridTextColumn DisplayMemberBinding="{Binding Enabled}" Header="Enabled" IsReadOnly="True"  />
</data:DataGrid.Columns>
            </data:DataGrid>
        </Grid>
    </StackPanel>
    <Grid x:Name="EditPersonPopupGrid" Visibility="Collapsed">
        <Rectangle HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Opacity="0.765" Fill="#FF8A8A8A" />
        <Border CornerRadius="30" Background="#FF2D1DCC" Width="700" Height="400" HorizontalAlignment="Center" VerticalAlignment="Center" BorderThickness="1,1,1,1" BorderBrush="#FF000000">
            <StackPanel x:Name="EditPersonStackPanel" Orientation="Vertical" Background="White" HorizontalAlignment="Center" VerticalAlignment="Center" Width="650" >
                <ContentControl>
                    <StackPanel x:Name="EmailEditStackPanel" Orientation="Horizontal">
                        <TextBlock Text="Email Address:" Width="200" Margin="5,0,5,0" />
                        <TextBox x:Name="EmailPopupTextBox" Width="200" />
                    </StackPanel>
                </ContentControl>
                <ContentControl>
                    <StackPanel x:Name="AppliesToDropdownStackPanel" Orientation="Horizontal" Margin="2,2,2,0">
                        <TextBlock Text="Don't send when update was done by:" />
                        <StackPanel Orientation="Vertical" MaxHeight="275" MaxWidth="350" >
                            <TextBlock x:Name="SelectedItemTextBlock" TextAlignment="Right" Width="200" Margin="5,0,5,0" />
                            <Grid x:Name="UserDropDownGrid" MaxHeight="75" MaxWidth="200" Visibility="Collapsed" ScrollViewer.VerticalScrollBarVisibility="Visible" ScrollViewer.HorizontalScrollBarVisibility="Hidden" >
                                <Rectangle Fill="White" />
                                <Border Background="White">
                                    <ListBox x:Name="UsersListBox" SelectionChanged="UsersListBox_SelectionChanged" ItemsSource="{Binding UserID}" />
                                </Border>                                       
                            </Grid>
                        </StackPanel>
                        <Button x:Name="DropDownButton" Click="DropDownButton_Click" VerticalAlignment="Top" Width="25" Height="25">
                            <Path Height="10" Width="10" Fill="#FF000000" Stretch="Fill" Stroke="#FF000000" Data="M514.66669,354 L542.16669,354 L527.74988,368.41684 z" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="1,1,1,1"/>
                        </Button>
                    </StackPanel>
                </ContentControl>
                <TextBlock Text="Where Clause Condition:" />
                <TextBox x:Name="WhereClauseTextBox" Height="200" Width="800" AcceptsReturn="True" TextWrapping="Wrap" />
                <ContentControl>
                    <StackPanel Orientation="Vertical">
                        <StackPanel Orientation="Horizontal">
                            <Button x:Name="TestConditionButton" Content="Test Condition" Margin="5,5,5,5" Click="TestConditionButton_Click" />
                            <Button x:Name="Save" Content="Save" HorizontalAlignment="Right" Margin="5,5,5,5" Click="Save_Click" />
                            <Button x:Name="Cancel" Content="Cancel" HorizontalAlignment="Right" Margin="5,5,5,5" Click="Cancel_Click" />                       
                        </StackPanel>   
                        <TextBlock x:Name="TestContitionResults" Visibility="Collapsed" />
                    </StackPanel>
                </ContentControl>
            </StackPanel>               
        </Border>               
    </Grid>     
</Grid>

, :

Private Sub IncidentGrid_SelectionChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)

    If mFirstTime Then
        mFirstTime = False
    Else
        Dim data As SimpleASMX.EMailMonitor = CType(IncidentGrid.SelectedItem, SimpleASMX.EMailMonitor)
        Dim selectedGridItem As SimpleASMX.EMailMonitor = Nothing
        If IncidentGrid.SelectedItem IsNot Nothing Then
            selectedGridItem = CType(IncidentGrid.SelectedItem, SimpleASMX.EMailMonitor)
            EmailPopupTextBox.Text = selectedGridItem.Address
            SelectedItemTextBlock.Text = selectedGridItem.AppliesToUserID
            WhereClauseTextBox.Text = selectedGridItem.whereClause
            IncidentGrid.SelectedIndex = mEmailMonitorData.IndexOf(selectedGridItem)
        End If
        If IncidentGrid.SelectedIndex > -1 Then
            EditPersonPopupGrid.Visibility = Windows.Visibility.Visible
        Else
            EditPersonPopupGrid.Visibility = Windows.Visibility.Collapsed
        End If
    End If
End Sub

, , Silverlight.

+2
4

Silverlight. , , , , SelectionChanged , , , .

, , SelectionChanged datagrid SelectedItem null

, , , . SelectionChanged if.

public partial class Page : UserControl
{
    private Person _currentSelectedPerson;

    public Page()
    {
        InitializeComponent();

        List<Person> persons = new List<Person>();
        persons.Add(new Person() { Age = 5, Name = "Tom" });
        persons.Add(new Person() { Age = 3, Name = "Lisa" });
        persons.Add(new Person() { Age = 4, Name = "Sam" });

        dg.ItemsSource = persons;
    }       

    private void SelectionChanged(object sender, EventArgs e)
    {
        DataGrid grid = sender as DataGrid;
        if (grid.SelectedItem != null)
        {
            _currentSelectedPerson = grid.SelectedItem as Person;
        }
        else
        {
            grid.SelectedItem = _currentSelectedPerson;
        }
    }
 }

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}
+4

, , , , . , , firefox.

I think that I may need to reconsider my work in silverlight until the system becomes more stable.

Thanks for the answer Hovito!

0
source

Source: https://habr.com/ru/post/1697080/

More articles:


All Articles