WPF Datagrid：如何以编程方式更改单个单元格的边框粗细？
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WPF Datagrid: How to change border thickness of a single cell programatically?
提问by nfinium
Im new to WPF
我是 WPF 的新手
Im trying to change the border of a single cell depending on the column and row index. So far I already have the code for getting the column and row index.
我试图根据列和行索引更改单个单元格的边框。到目前为止，我已经有了获取列和行索引的代码。
Now I need to get 'that cell' and change its border..
现在我需要得到“那个单元格”并改变它的边框..
This is my Code , but its not working:
这是我的代码，但它不起作用：
I got this method from net:
我从网上得到了这个方法：
public static T GetVisualChild<T>(Visual parent) where T : Visual
{
T child = default(T);
int numVisuals = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < numVisuals; i++)
{
Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);
child = v as T;
if (child == null)
child = GetVisualChild<T>(v);
else
break;
} return child;
}
Then this where I need to change the cell properties..
然后这是我需要更改单元格属性的地方..
int rows = 0;
int col = 0;
while (col < myDG.Columns.Count)
{
rows = 0;
while (rows < myDG.Items.Count)
{
DataGridRow row = (DataGridRow)myDG.ItemContainerGenerator.ContainerFromIndex(rows);
if (row != null)
{
DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(row);
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(col);
cell.BorderThickness = new Thickness (2,2,2,2);
cell.BorderBrush= Brushes.Black;
rows++;
}
col++;
}
Any Idea? Thanks in Advance
任何的想法？提前致谢
回答by JMan
Try to avoid code behind in your WPF application. Prefer to set the thickness property to a binding property on your datacontext.
尽量避免在 WPF 应用程序中隐藏代码。最好将厚度属性设置为数据上下文上的绑定属性。
then you can convert this value to a valid value for that property by setting a valueconverter.
然后您可以通过设置 valueconverter 将此值转换为该属性的有效值。
Here's a very basic example: http://wpftutorial.net/DataBindingOverview.html
这是一个非常基本的示例：http: //wpftutorial.net/DataBindingOverview.html
So if you're new to WPF try searching some video's about MVVM.
Laurent Bignon has made a few excellent ones to explain the whole concept
因此，如果您不熟悉 WPF，请尝试搜索一些有关 MVVM 的视频。
Laurent Bignon 做了一些很好的解释整个概念
