在单元格组周围绘制刻度线边框（TableLayoutPanel C＃）

Question

I'm making a sudoku field in a windows form application (c#)

I've used a TableLayout to make my boxes to put labels in for the numbers displayed in the sudoku, now I need a thick border around every group of 3x3 cells (like a sudoku)...

I'm trying with the CellPaint object but I can't set a border around a group of borders...

Answer 1

您可以尝试将面板添加到左上角的单元格，并将其RowSpan和ColSpan设置为3。之后，您可以在其上绘制任何边框。

Answer 2

Step 1

• Create a UserControl
• Set Background to Black, Margin to 0, 0, 0, 0 and Padding to 3, 3, 3, 3
• Add a TableLayoutControl with 3 Row & 3 Cells (33% each)
• Set TableLayoutControl Dock to Fill and BackColor to Black
• Add a Label to each cell, Margin 1, BackColor White

Step 2

• Create another UserControl with 3x3 cells (33% each)
• add an instance of your first UserControl to every single cell
• now you have double borders where two controls are besides each other but you can easily adjust this by setting the padding for the indiviual usercontrols. I would suggest you leave the one in the middle with 3, 3, 3, 3 and modify the outer controls

Here is a sample, left is UserControl1, right is UserControl2 with 9x UserControl1
I used padding 4 on the outer sides and padding 2 on the inner sides.

Answer 3

we had to change our code for making the labels and are doing it this way...

const int spacing = 30;  //ruimte tussen kotjes
                    int aantal = (int)nudColsPerBlock.Value * (int)nudRowsPerBlock.Value; //totaal aantal kotjes per rij/kolom
                    Label[][] SudokuRaster = new Label[aantal][];
                    for (int x = 0; x

But I still need thick borders between some of the labels, any tips?