在WPF Datagrid中的样式第一行 [英] Style first row in a WPF Datagrid

问题描述

我想在WPF Datagrid中更改第一行（仅）的样式，但尚未找到如何执行此操作。我想知道如何创建触发器：

 < Style TargetType ={x：Type dg：DataGridRow} > 
< Style.Triggers> 
< Trigger Property =SelectedIndexValue =0> 
< Setter Property =BackgroundValue =Red/> 
< / Trigger> 
< /Style.Triggers> 
< / Style> 
  

但是当然这不起作用，因为DataGridRow上没有SelectedIndex属性。我也有一些尝试在我的代码中执行此操作，但无法使其正常工作。

看起来似乎相当简单，但我没有管理它，所以任何建议将是非常感谢。

谢谢，
将

解决方案

您可能可以创建一个IValueConverter来返回您的样式，作为一个Style对象，或者只是一个字符串表示（即风格名称）。然后，您可以将DataGrid的style属性绑定到转换器，并将项目的基础列表作为参数传递，以确定当前项目的索引？

转换器可能看起来像这样...

  public class StyleConverter：IValueConverter 
 {
 public object Convert对象值，类型targetType，对象参数，System.Globalization.CultureInfo文化）
 {
 Style style1 = App.Current.FindResource（RowStyle1）as Style; 
 Style style2 = App.Current.FindResource（RowStyle2）as Style; 
 
列表< object> items =参数作为List< object> ;;; 
 
 if（items [0] == value）
 {
 return style1; 
} 
 
 return style2; 
} 
} 
  

不知道这是否会起作用，我很好奇，现在，我很好奇，可以试试看看能否让它上班！

I would like to change the styling of the first row (only) in a WPF Datagrid but haven't found how to do it. I wondered about creating a trigger, something like this:

<Style TargetType="{x:Type dg:DataGridRow}">
    <Style.Triggers>
        <Trigger Property="SelectedIndex" Value="0">
            <Setter Property="Background" Value="Red"/>
        </Trigger>
    </Style.Triggers>
</Style>

But of course this doesn't work since there is no 'SelectedIndex' property on DataGridRow. I have also had some attempts at doing this in my code behind but couldn't get it to work.

It seems like something that out to be fairly simple but I haven't managed it, so any advice would be most appreciated.

Thanks, Will

解决方案

You might be able to create an IValueConverter to return your Style, either as a Style object or just a string representation (ie. the name of the style). Then you can bind the style property of your DataGrid to the converter and pass in the underlying list of items as a parameter to determine the index of the current item?

The converter might look something like this...

public class StyleConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        Style style1 = App.Current.FindResource("RowStyle1") as Style;
        Style style2 = App.Current.FindResource("RowStyle2") as Style;

        List<object> items = parameter as List<object>;

        if (items[0] == value)
        {
            return style1;
        }

        return style2;
    }
}

Not sure if this would work, I probably haven't explained it very well either!

I'm curious now, I might give this a try and see if I can get it to work!

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