title: Thick line between labels (C#)
body: <p>I want to make a sudoku field of labels, for which I have the code.
  Now I want thick lines between some labels so you can see which block of labels are together.</p>
  
  <p>This code makes the labels:</p>
  
  <pre><code>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 &lt; aantal; x++)
              {
                  SudokuRaster[x] = new Label[aantal];
                  for (int y = 0; y &lt; aantal; y++)
                  {
                      SudokuRaster[x][y] = new Label();
                      SudokuRaster[x][y].BorderStyle = BorderStyle.FixedSingle;
                      SudokuRaster[x][y].Location = new System.Drawing.Point(x * spacing, y * spacing);
                      SudokuRaster[x][y].Name = "Sudoku" + x.ToString() + "," + y.ToString();
                      SudokuRaster[x][y].Size = new Size(spacing, spacing);
                      SudokuRaster[x][y].TabIndex = 0;
                      SudokuRaster[x][y].MouseClick += new System.Windows.Forms.MouseEventHandler(this.MouseClick);
  
                  }
                  this.Controls.AddRange(SudokuRaster[x]);
              }
  </code></pre>