根据对象属性更改datagrid单元格的背景颜色-Java 学习之路

我通过代码隐藏在数据网格中创建列，如下所示：

DataGridTextColumn dgtc1 = new DataGridTextColumn();
dgtc1.Header = "Feldname";
dgtc1.Binding = new Binding("FieldName");
dataGrid.Columns.Add(dgtc1);
DataGridTextColumn dgtc2 = new DataGridTextColumn();
dgtc2.Header = "Masterwert";
dgtc2.Binding = new Binding("MasterValue");
dataGrid.Columns.Add(dgtc2);
int counter = 0;
foreach (DBManager database in databases)
{
    if (!database.IsMaster)
    {
        DataGridTextColumn dgtc = new DataGridTextColumn();
        dgtc.Header = database.DisplayName;
        dgtc.Binding = new Binding("LocationValues[" + counter + "]");
        dataGrid.Columns.Add(dgtc);
        counter++;
    }
}

我希望单元格将其背景颜色更改为特定值，具体取决于items属性“DeltaValues” .

if(DeltaValues[i] == true)
   //Change the background color to x
else
   //Do nothing

是否有绑定我可以为代码隐藏的列设置以实现此行为？

有任何想法吗？

1 回答

我没有测试代码 . 我不确定DataGridCell.ContentProperty属性是否正确：

if (!database.IsMaster)
{
    DataGridTextColumn dgtc = new DataGridTextColumn();
    dgtc.Header = database.DisplayName;
    dgtc.Binding = new Binding("LocationValues[" + counter + "]");

    Setter setter = new Setter();
    setter.Property = Control.BackgroundProperty;            
    setter.Value = Brushes.Red;

    Trigger trigger = new Trigger();
    trigger.Property = DataGridCell.ContentProperty;
    trigger.Value = true;
    trigger.Setters.Add(setter);

    dgtc.CellStyle.Triggers.Add(trigger);

    dataGrid.Columns.Add(dgtc);
    counter++;
}

或带转换器的版本 .

{
        if (!database.IsMaster)
        {
            DataGridTextColumn dgtc = new DataGridTextColumn();
            dgtc.Header = database.DisplayName;
            dgtc.Binding = new Binding("LocationValues[" + counter + "]");

            Converter converter = new Converter();

            Binding binding = new Binding(DeltaValues[i]);
            binding.Converter = converter;

            dgtc.CellStyle.Setters.Add(new Setter(Control.BackgroundProperty, binding));

            dataGrid.Columns.Add(dgtc);
            counter++;
        }


        return this;
    }

非常简单的转换器类：

public class Converter : IValueConverter
{

  public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
  {
    if ((bool)value) return Brushes.Red;

    return null;
  }

  public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
  {
    new throw Exception();
  }
}

回复于 2024-05-03T18:14:15+08:00

根据对象属性更改datagrid单元格的背景颜色

1 回答

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