/Visual Studio 2008/VBWinFormDataGridView/MultipleLayeredColumnHeader/ReadMe.txt

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       WINDOWS FORMS APPLICATION : VBWinFormDataGridView Project Overview

       

                   MultipleLayeredColumnHeader Sample

                        

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Use:



This sample demonstrates how to display multiple layer column headers on the 

DataGridView contorl.





-----------------------------------------------------------------

      |   January      |   February      |     March      |

      |  Win  | Loss   |  Win   | Loss   |  Win   | Loss  |

-----------------------------------------------------------------

Team1 |       |        |        |        |        |       |

-----------------------------------------------------------------

Team2 |       |        |        |        |        |       |

-----------------------------------------------------------------

TeamN |       |        |        |        |        |       |

-----------------------------------------------------------------





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Code Logic:



1.  Enable resizing on the column headers by setting the 

    ColumnHeadersHeightSizeMode property as follows:



    this.dataGridView1.ColumnHeadersHeightSizeMode =

         DataGridViewColumnHeadersHeightSizeMode.EnableResizing;



2.  Adjust the height for the column headers to make it wide enough for two 

    layers;



    this.dataGridView1.ColumnHeadersHeight =

         this.dataGridView1.ColumnHeadersHeight * 2;

                        

                        

3.  Adjust the text alignment on the column headers to make the text display 

    at the center of the bottom;

    

    this.dataGridView1.ColumnHeadersDefaultCellStyle.Alignment =

         DataGridViewContentAlignment.BottomCenter;

    

4.  Handle the DataGridView.CellPainting event to draw text for each header 

    cell;



5.  Handle the DataGridView.Paint event to draw "merged" header cells;





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References:



1. DataGridView Class

   http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.aspx

   

2. Windows Forms FAQs

   http://windowsclient.net/blogs/faqs/archive/tags/Custom+Designers/default.aspx





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