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Posted 10 Mar 2009

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

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Comments and Discussions

 
AnswerRe: .net 2.0 version Pin
Sergey Semyonov18-Jun-13 21:11
memberSergey Semyonov18-Jun-13 21:11 
Questiondouble buffer for the datagridview Pin
tanghuawei21-Jan-13 17:28
membertanghuawei21-Jan-13 17:28 
AnswerRe: double buffer for the datagridview Pin
tipsybroom5-Jun-13 4:17
membertipsybroom5-Jun-13 4:17 
GeneralRe: double buffer for the datagridview Pin
Sergey Semyonov5-Jun-13 8:17
memberSergey Semyonov5-Jun-13 8:17 
GeneralRe: double buffer for the datagridview Pin
tanghuawei14-Jul-13 17:30
membertanghuawei14-Jul-13 17:30 
GeneralRe: double buffer for the datagridview Pin
tipsybroom3-Sep-13 2:38
membertipsybroom3-Sep-13 2:38 
GeneralRe: double buffer for the datagridview Pin
Member 1052976522-Apr-14 23:57
professionalMember 1052976522-Apr-14 23:57 
QuestionVBNet 2010 Pin
beto.silva.araujo@gmail.com30-Oct-12 13:08
memberbeto.silva.araujo@gmail.com30-Oct-12 13:08 
Before the question, I'm number one fan of the DataGridView, so my congratulations for the work.

The column not expand.

I created the column as an example using the type DataGridViewTextBoxCellEx, however, does not appear in the combox ColumnSpan.

Dim RowDtGrid As New DataGridViewRow
RowDtGrid = DtGrid.Rows(0)
RowDtGrid.Cells("Coluna1").ColumnSpan = 3

What am I doing wrong?

In combox in Visual Studio, there is no ColumnSpan.
AnswerRe: VBNet 2010 Pin
Sergey Semyonov31-Oct-12 2:42
memberSergey Semyonov31-Oct-12 2:42 
GeneralRe: VBNet 2010 Pin
beto.silva.araujo@gmail.com31-Oct-12 7:20
memberbeto.silva.araujo@gmail.com31-Oct-12 7:20 
AnswerRe: VBNet 2010 Pin
H Lugo1-Jan-14 8:26
memberH Lugo1-Jan-14 8:26 
QuestionDataGridViewButtonCellEx ? Pin
Stefan Gies18-Oct-12 8:25
memberStefan Gies18-Oct-12 8:25 
AnswerRe: DataGridViewButtonCellEx ? Pin
Sergey Semyonov18-Oct-12 9:33
memberSergey Semyonov18-Oct-12 9:33 
QuestionBinding Pin
Krysiu_2926-Sep-12 19:08
memberKrysiu_2926-Sep-12 19:08 
AnswerRe: Binding Pin
Sergey Semyonov18-Oct-12 9:42
memberSergey Semyonov18-Oct-12 9:42 
Questionso good Pin
Member 437754611-Sep-12 21:54
memberMember 437754611-Sep-12 21:54 
QuestionSpannedDataGridView casting to datagridview Pin
ajayarav5-Jun-12 20:58
memberajayarav5-Jun-12 20:58 
AnswerRe: SpannedDataGridView casting to datagridview Pin
Krysiu_2926-Sep-12 18:24
memberKrysiu_2926-Sep-12 18:24 
AnswerRe: SpannedDataGridView casting to datagridview Pin
Sergey Semyonov18-Oct-12 9:46
memberSergey Semyonov18-Oct-12 9:46 
NewsHow to make click on any span cell select span correctly & port to VB .NET Pin
drunlar11-Jun-12 7:46
memberdrunlar11-Jun-12 7:46 
QuestionLooks like what I want to do Pin
Lee Belcher22-Jan-12 14:17
memberLee Belcher22-Jan-12 14:17 
AnswerRe: Looks like what I want to do Pin
Sergey Semyonov22-Jan-12 20:10
memberSergey Semyonov22-Jan-12 20:10 
GeneralRe: Looks like what I want to do Pin
nimolZero23-May-12 23:27
membernimolZero23-May-12 23:27 
Questiondoublebuffering Pin
xboxproject19-Apr-11 1:16
memberxboxproject19-Apr-11 1:16 
AnswerRe: doublebuffering Pin
Sergey Semyonov25-Apr-11 0:32
memberSergey Semyonov25-Apr-11 0:32 

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