Adding Text to DataGridView Row Header

Question

Does C  allow you to add a String to a RowHeader in a DataGridView  If so  how is it accomplished   I m writing a Windows Form to displayed Customer Payment Data for the year so far   The ColumnHeaders display January  February  March  etc    and rather than have a blank column with DateTime Now Year I would like to put it in the RowHeader to make it stand out from the actual payment data

User · Answer

I had the same problem  but I noticed that my datagrid lost the rows s header after the datagrid visible property changed   Try to update the rows s headers with the Datagrid visiblechanged event

User · Answer

I had the same    problem  Couldn t get header column to display row header data  a simple row number  with my data bound grid  Once I moved the code to the event  DataBindingComplete  it worked   Sorry for the extra code  I wanted to provide a working example but don t have time to cut it all down so just cut and pasted some of my app and fixed it up to run for you  Here you go   using System  using System Collections Generic  using System Data  using System Windows Forms  using System Windows Forms DataVisualization Charting   namespace WindowsFormsApplication3       public partial class Form1   Form               private List lt DataPoint gt  pts   new List lt DataPoint gt              public Form1                         InitializeComponent                       private void Form1 Load object sender  EventArgs e                        InsertPoint 10  20               InsertPoint 12  40               InsertPoint 16  60               InsertPoint 20  77               InsertPoint 92  80                MakeGrid                       public void InsertPoint int parameterValue  int commandValue                        DataPoint pt   new DataPoint                pt XValue   commandValue              pt YValues 0    parameterValue              pts Add pt                      private void MakeGrid                         dgv1 SuspendLayout                DataTable dt   new DataTable                dt Columns Clear                dt Columns Add  Parameter                dt Columns Add  Command                       Add Data to DataTable             for  int i   0  i  lt   pts Count - 1  i                                  dt Rows Add pts i  XValue  pts i  YValues 0                              dgv1 DataSource   dt                     Formatting for the grid is performed in event dgv1 DataBindingComplete                    If its performed here  the changes appear to get wiped in the grid control                     private void dgv1 DataBindingComplete object sender  DataGridViewBindingCompleteEventArgs e                        DataGridViewCellStyle style   new DataGridViewCellStyle                style Alignment   DataGridViewContentAlignment MiddleRight                     Add row number to each row             foreach  DataGridViewRow row in dgv1 Rows                                row HeaderCell Value    row Index   1  ToString                    row HeaderCell Style   style                  row Resizable   DataGridViewTriState False                            dgv1 ClearSelection                dgv1 CurrentCell   null              dgv1 ResumeLayout

User · Answer

I think it should be   dataGridView1 Columns 0  HeaderCell Value    my text

User · Answer

private void dtgworkingdays DataBindingComplete object sender  DataGridViewBindingCompleteEventArgs e        this FillRecordNo        private void FillRecordNo         for  int i   0  i  lt  this dtworkingdays Rows Count  i                  this dtgworkingdays Rows i  HeaderCell Value    i   1  ToString              Also see Show row number in row header of a DataGridView

User · Answer

it s because of your first column  Rows Header column  width   increase it s width then you can see it s value   you can use this command   dgv1 RowHeadersWidthSizeMode   DataGridViewRowHeadersWidthSizeMode AutoSizeToAllHeaders     notice  you must first set dgv1 RowHeadersVisible   true

User · Answer

Here s a little  coup de pouce   Public Class DataGridViewRHEx Inherits DataGridView  Protected Overrides Function CreateRowsInstance   As System Windows Forms DataGridViewRowCollection     Dim dgvRowCollec As DataGridViewRowCollection   MyBase CreateRowsInstance       AddHandler dgvRowCollec CollectionChanged  AddressOf dvgRCChanged     Return dgvRowCollec End Function  Private Sub dvgRCChanged sender As Object  e As System ComponentModel CollectionChangeEventArgs      If e Action   System ComponentModel CollectionChangeAction Add Then         Dim dgvRow As DataGridViewRow   e Element         dgvRow DefaultHeaderCellType   GetType DataGridViewRowHeaderCellEx      End If End Sub End Class    nbsp   Public Class DataGridViewRowHeaderCellEx Inherits DataGridViewRowHeaderCell  Protected Overrides Sub Paint graphics As System Drawing Graphics  clipBounds As System Drawing Rectangle  cellBounds As System Drawing Rectangle  rowIndex As Integer  dataGridViewElementState As System Windows Forms DataGridViewElementStates  value As Object  formattedValue As Object  errorText As String  cellStyle As System Windows Forms DataGridViewCellStyle  advancedBorderStyle As System Windows Forms DataGridViewAdvancedBorderStyle  paintParts As System Windows Forms DataGridViewPaintParts      If Not Me OwningRow DataBoundItem Is Nothing Then         If TypeOf Me OwningRow DataBoundItem Is DataRowView Then          End If     End If  HERE YOU CAN USE DATAGRIDROW TAG TO PAINT STRING      formattedValue   CStr Me DataGridView Rows rowIndex  Tag      MyBase Paint graphics  clipBounds  cellBounds  rowIndex  dataGridViewElementState  value  formattedValue  errorText  cellStyle  advancedBorderStyle  paintParts  End Sub End Class

User · Answer

make sure the Enable Column Recording is checked

User · Answer

datagridview1 Rows 0  HeaderCell Value    Your text     It works

User · Answer

foreach  DataGridViewRow row in datagrid Rows                          row HeaderCell Value   String Format   0    row Index   1

User · Answer

yes you can  DataGridView1 Rows 0  HeaderCell Value    my text

User · Answer

You don t have to use the RowValidated event  that s just the one I used for a little test app to make sure this worked  but this will set the row  not column  header text to whatever year you specify   It would probably go better in the CellFormatting event  actually       private void dataGridView RowValidated object sender  DataGridViewCellEventArgs e                DataGridView gridView   sender as DataGridView           if  null    gridView                        gridView Rows e RowIndex  HeaderCell Value    2009                     EDIT  Here s the entire TestForm I used  as simple as possible to demonstrate the solution  Make sure your RowHeadersWidth is wide enough to display the text    region  using System ComponentModel  using System Windows Forms    endregion  namespace DataGridViewTest       public class GridTest   Form                    lt summary gt              Required designer variable               lt  summary gt          private IContainer components           private DataGridView dataGridView1          private DataGridViewTextBoxColumn Month           public GridTest                         InitializeComponent                            lt summary gt              Clean up any resources being used               lt  summary gt               lt param name  disposing  gt true if managed resources should be disposed  otherwise  false  lt  param gt          protected override void Dispose bool disposing                        if  disposing  amp  amp   components    null                                 components Dispose                              base Dispose disposing                      private void dataGridView RowValidated object sender  DataGridViewCellEventArgs e                        DataGridView gridView   sender as DataGridView               if  null    gridView                                gridView Rows e RowIndex  HeaderCell Value    2009                                     region Windows Form Designer generated code               lt summary gt              Required method for Designer support - do not modify             the contents of this method with the code editor               lt  summary gt          private void InitializeComponent                         this dataGridView1   new System Windows Forms DataGridView                this Month   new System Windows Forms DataGridViewTextBoxColumn                  System ComponentModel ISupportInitialize   this dataGridView1   BeginInit                this SuspendLayout                                   dataGridView1                             this dataGridView1 AutoSizeColumnsMode   System Windows Forms DataGridViewAutoSizeColumnsMode Fill              this dataGridView1 ColumnHeadersHeightSizeMode                   System Windows Forms DataGridViewColumnHeadersHeightSizeMode AutoSize              this dataGridView1 Columns AddRange new System Windows Forms DataGridViewColumn                                                                                                                 this Month                                                                     this dataGridView1 Dock   System Windows Forms DockStyle Fill              this dataGridView1 Location   new System Drawing Point 0  0               this dataGridView1 Name    dataGridView1               this dataGridView1 RowHeadersWidth   100              this dataGridView1 Size   new System Drawing Size 745  532               this dataGridView1 TabIndex   0              this dataGridView1 RowValidated                    new System Windows Forms DataGridViewCellEventHandler this dataGridView RowValidated                                  Month                             this Month HeaderText    Month               this Month Name    Month                                  Form1                             this AutoScaleDimensions   new System Drawing SizeF 6F  13F               this AutoScaleMode   System Windows Forms AutoScaleMode Font              this ClientSize   new System Drawing Size 745  532               this Controls Add this dataGridView1               this Name    Form1               this Text    Form1                 System ComponentModel ISupportInitialize   this dataGridView1   EndInit                this ResumeLayout false                       endregion

User · Answer

Yes  First  hook into the column added event   this dataGridView1 ColumnAdded    new DataGridViewColumnEventHandler dataGridView1 ColumnAdded     Then  in your event handler  just append the text you want to   private void dataGridView1 ColumnAdded object sender  DataGridViewColumnEventArgs e        e Column HeaderText    additionalHeaderText

[c#] Adding Text to DataGridView Row Header

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