Masz kod na dobry początek do lekkiego dopracowania. :D
XAML:
<Window x:Class="TestOne.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:testOne="clr-namespace:TestOne"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<testOne:SourceDefaultValueConverter x:Key="ChangeColor" />
</Window.Resources>
<Grid>
<DataGrid HorizontalAlignment="Left" VerticalAlignment="Top" ItemsSource="{Binding ValuesCollection}"
AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTextColumn Header="Name" Binding="{Binding Name}">
<DataGridTextColumn.ElementStyle>
<Style TargetType="TextBlock">
<Setter Property="HorizontalAlignment" Value="Center" />
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
<DataGridTextColumn Header="Value" Binding="{Binding Value}">
<DataGridTextColumn.ElementStyle>
<Style TargetType="TextBlock">
<Setter Property="Background"
Value="{Binding RelativeSource={RelativeSource Self}, Path=Text,
UpdateSourceTrigger=PropertyChanged, Converter={StaticResource ChangeColor}}" />
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
</Grid>
</Window>
MainWindow:
#region
using System.Collections.Generic;
using System.Windows;
#endregion
namespace TestOne
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = this;
ValuesCollection = new List<Foo>
{
new Foo {Name = "Słowo", Value = "ad"},
new Foo {Name = "Liczba dodatnia", Value = "100"},
new Foo {Name = "Liczba ujemna", Value = "-100"}
};
}
public List<Foo> ValuesCollection { get; set; }
}
public class Foo
{
public string Name { get; set; }
public string Value { get; set; }
}
}
Konwerter:
#region
using System;
using System.Globalization;
using System.Windows.Data;
using System.Windows.Media;
#endregion
namespace TestOne
{
public class SourceDefaultValueConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo
culture)
{
var staff = (string) value;
int result;
var parsed = int.TryParse(staff, out result);
return !parsed || result < 0
? new SolidColorBrush(Colors.Red)
: new SolidColorBrush(Colors.Blue);
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
return value;
}
}
}