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DataGridVewTextBoxCell with Span Behaviour

, 18 Jun 2013 CPOL
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DataGridViewTextBoxCell derived cell that can be merged with cells of the same type

Introduction

The standard System.Windows.Forms.DataGridView cells do not support merging the normal way. At some forums, developers advise the use of the CellPainting event of DataGridView. But this solution is not good if you need to realize complicated mergings. DataGridViewTextBoxCellEx supports spanning without any additional code.

Using the Code

To use DataGridViewTextBoxCellEx in a project, include the DataGridViewTextBoxCellEx.cs file, and then you can add DataGridViewTextBoxColumnEx in the columns editor of the DataGridView control.

Merging of cells is performed by setting the ColumnSpan and RowSpan properties of the left top DataGridViewTextBoxCellEx cell of the target region. For successful merging, all cells of the region must be of the DataGridViewTextBoxCellEx type.

var cell = (DataGridViewTextBoxCellEx)dataGridView1[0, 0];
cell.ColumnSpan = 3;
cell.RowSpan = 2;

As a result, the dataGridView1[0, 0] cell will occupy the region from (0, 0) to (2, 1) (see screenshot at the top). The merged cell will look as the top left cell of the region. And if you wish to address a merged cell, you need to address the top left cell of the merged region. The merged region will look and behave as a normal System.Windows.Forms.DataGridViewTextBoxCell. You can edit it the standard way (pressing F2, clicking or typing text).

DataGridViewTextBoxCellEx also has a property OwnerCell. For unmerged cells and for the left top cells of the merged regions, it is null. For other cells of the merged region, the property points to the left top cell.

History

  • 11th March, 2009: Initial post
  • 9th March, 2010: Article updated
  • 21st December, 2010: Demo and source files updated

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Sergey Semyonov
Software Developer EKRA
Russian Federation Russian Federation
No Biography provided

Comments and Discussions

 
AnswerRe: VBNet 2010 PinmemberSergey Semyonov31-Oct-12 3:42 
GeneralRe: VBNet 2010 Pinmemberbeto.silva.araujo@gmail.com31-Oct-12 8:20 
AnswerRe: VBNet 2010 PinmemberH Lugo1-Jan-14 9:26 
QuestionDataGridViewButtonCellEx ? PinmemberStefan Gies18-Oct-12 9:25 
AnswerRe: DataGridViewButtonCellEx ? PinmemberSergey Semyonov18-Oct-12 10:33 
QuestionBinding PinmemberKrysiu_2926-Sep-12 20:08 
AnswerRe: Binding PinmemberSergey Semyonov18-Oct-12 10:42 
Questionso good PinmemberMember 437754611-Sep-12 22:54 
so good ,thank you for sharing the codes
QuestionSpannedDataGridView casting to datagridview Pinmemberajayarav5-Jun-12 21:58 
AnswerRe: SpannedDataGridView casting to datagridview PinmemberKrysiu_2926-Sep-12 19:24 
AnswerRe: SpannedDataGridView casting to datagridview PinmemberSergey Semyonov18-Oct-12 10:46 
NewsHow to make click on any span cell select span correctly & port to VB .NET Pinmemberdrunlar11-Jun-12 8:46 
QuestionLooks like what I want to do PinmemberLee Belcher22-Jan-12 15:17 
AnswerRe: Looks like what I want to do PinmemberSergey Semyonov22-Jan-12 21:10 
GeneralRe: Looks like what I want to do PinmembernimolZero24-May-12 0:27 
Questiondoublebuffering Pinmemberxboxproject19-Apr-11 2:16 
AnswerRe: doublebuffering PinmemberSergey Semyonov25-Apr-11 1:32 
GeneralRe: doublebuffering Pinmemberxboxproject26-Apr-11 2:08 
AnswerRe: doublebuffering PinmemberSergey Semyonov27-Apr-11 5:30 
GeneralRe: doublebuffering Pinmembertipsybroom5-Jun-13 5:21 
Generallast question for this fabulous control :-) Pinmembergertdebusser16-Dec-10 0:53 
GeneralRe: last question for this fabulous control :-) PinmemberSergey Semyonov16-Dec-10 4:18 
GeneralRe: last question for this fabulous control :-) PinmemberSergey Semyonov21-Dec-10 3:08 
Generaldouble question Pinmembergertdebusser9-Nov-10 0:31 
GeneralRe: double question PinmemberSergey Semyonov9-Nov-10 2:18 

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