c# - 如何为 DataGrid 列单元格添加边框

Question

我在 WPF DataGrid 中显示数据，第一列显示静态文本“View”。我添加了下面的代码，使文本看起来像一个按钮。我不想做很多工作来创建按钮列自定义模板。这几乎可以工作了；文本居中，绘制边框。唯一不起作用的是背景没有出现——我仍然可以看到底层的交替行颜色。我还需要做些什么来激活背景颜色，还是因为 TextBlock 嵌套在 DataGridCell 和(我认为)其他一些对象中而出现问题？

[我也尝试过使用 TextBlock.BackgroundProperty 创建背景 setter ，但这也不起作用。我尝试将 BackgroundProperty 设置为 ImageBrush，这会更好，但它找不到我的图像位置。]

        private void dgvDetail_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
        {
            string sHeader = e.Column.Header.ToString();
            if (sHeader.Trim().ToLower() == "view")
            {
                e.Column.CellStyle = GetViewColumnStyle();
            }
        }
        private Style GetViewColumnStyle()
        {
            Style oStyle = new Style(typeof(DataGridCell));
            Setter oTextAlignment = new Setter(TextBlock.TextAlignmentProperty, TextAlignment.Center);
            oStyle.Setters.Add(oTextAlignment);
            Setter oBackground = new Setter(DataGridCell.BackgroundProperty, Brushes.LightGray);
            oStyle.Setters.Add(oBackground);
            Setter oForeground = new Setter(DataGridCell.ForegroundProperty, Brushes.Black);
            oStyle.Setters.Add(oForeground);
            Setter oBorderBrush = new Setter(DataGridCell.BorderBrushProperty, Brushes.Black);
            oStyle.Setters.Add(oBorderBrush);
            Setter oMargin = new Setter(DataGridCell.MarginProperty, new Thickness(2, 2, 2, 2));
            oStyle.Setters.Add(oMargin);
            return oStyle;
        }

Answer 1

您只对内部的 TextBlock 进行样式设置。您应该设置 DataGridCell.Template:

    private Style GetViewColumnStyle()
    {
        // The TextBlock
        FrameworkElementFactory textBlockFactory = new FrameworkElementFactory(typeof(TextBlock));
        // DataBinding for TextBlock.Text
        Binding textBinding = new Binding("YourTextBindingPath");
        textBlockFactory.SetValue(TextBlock.TextProperty, textBinding);
        //Other TextBlock attributes
        textBlockFactory.SetValue(TextBlock.TextAlignmentProperty, TextAlignment.Center);
        textBlockFactory.SetValue(TextBlock.BackgroundProperty, Brushes.LightGray);
        textBlockFactory.SetValue(TextBlock.ForegroundProperty, Brushes.Black);
        textBlockFactory.SetValue(TextBlock.MarginProperty, new Thickness(2, 2, 2, 2));

        // The Border around your TextBlock
        FrameworkElementFactory borderFactory = new FrameworkElementFactory(typeof(Border));
        borderFactory.SetValue(Border.BorderBrushProperty, Brushes.Black);
        borderFactory.SetValue(Border.BorderThicknessProperty, new Thickness(1, 1, 1, 1));
        // Add The TextBlock to the Border as a child element
        borderFactory.AppendChild(textBlockFactory);

        // The Template for each DataGridCell = your Border that contains your TextBlock
        ControlTemplate cellTemplate = new ControlTemplate();
        cellTemplate.VisualTree = borderFactory;

        // Setting Style.Template
        Style oStyle = new Style(typeof(DataGridCell));
        Setter templateSetter = new Setter(DataGridCell.TemplateProperty, cellTemplate);
        oStyle.Setters.Add(templateSetter);
        return oStyle;
    }