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c# - 自动 DataGridView 单个单元格的前景

问题描述

我试图在 DataGridView 的一行中设置单个单元格的前景，但我找不到答案。该函数加载所有 DataGrid 并在找到“Alta”时更改前景，但如果我更改 DataGrid 的顺序（如按名称排序），前景再次变为默认值。这里的功能：

private void DataGrid_Color(DataGrid Grid)
        {
            Grid.UpdateLayout();
            foreach (DataRowView item in Grid.ItemsSource)
            {
                if (item.Row[7].Equals("Alta"))
                {
                    Grid.UpdateLayout();
                    DataGridRow row = (DataGridRow)Grid.ItemContainerGenerator
                                                       .ContainerFromItem(item);
                    DataGridCell column = Grid.Columns[7].GetCellContent(row)
                                                         .Parent as DataGridCell;
                    if (row != null)
                    {
                        column.Foreground = Brushes.Red;
                    }
                }
                else if (item.Row[7].Equals("Média"))
                {
                    Grid.UpdateLayout();
                    DataGridRow row = (DataGridRow)Grid.ItemContainerGenerator
                                                       .ContainerFromItem(item);
                    DataGridCell column = Grid.Columns[7].GetCellContent(row)
                                                         .Parent as DataGridCell;
                    if (row != null)
                    {
                        column.Foreground = Brushes.Orange;
                    }
                }
                else if (item.Row[7].Equals("Baixa"))
                {
                    Grid.UpdateLayout();
                    DataGridRow row = (DataGridRow)Grid.ItemContainerGenerator
                                                   .ContainerFromItem(item);
                    DataGridCell column = Grid.Columns[7].GetCellContent(row)
                                                         .Parent as DataGridCell;
                    if (row != null)
                    {
                        column.Foreground = Brushes.Green;
                    }
                }
                Grid.UpdateLayout();
            }
        }

我尝试其他功能，每行加载行但返回 null

        private void dgv_LoadingRow(object sender, DataGridRowEventArgs e)
        {
            if (ativo && coluna != -1)
            {
                DataRowView dataRowView = e.Row.Item as DataRowView;
                if (Convert.ToString(dataRowView[coluna]).Equals("True"))
                {
                    e.Row.BorderBrush = Brushes.Gray;
                    e.Row.BorderThickness = new Thickness(1);
                }
                else
                {
                    e.Row.BorderBrush = Brushes.Gray;
                    e.Row.BorderThickness = new Thickness(1, 0, 1, 0);
                }
            }
        }

我有其他方法可以更改 DataGrid 中的单个单元格前景并且不返回 null 或将前景恢复为默认值？

标签： c#wpfvisual-studiodatagridviewformatting

解决方案

您可以为要在不同条件下设置前景的列设置 DataGridRow 样式，如下所示：

  <DataGrid.RowStyle>
            <Style TargetType="DataGridRow">
                <Style.Triggers>
                    <DataTrigger Binding="{Binding Name}" Value="Alta">
                        <Setter Property="Foreground" Value="Red"></Setter>
                    </DataTrigger>
                    <DataTrigger Binding="{Binding Name}" Value="Média">
                        <Setter Property="Foreground" Value="Orange"></Setter>
                    </DataTrigger>
                    <DataTrigger Binding="{Binding Name}" Value="Baixa">
                        <Setter Property="Foreground" Value="Green"></Setter>
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </DataGrid.RowStyle>

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