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How to ResizeToFit a cell with multi-line text in WinForms GridGroupingControl?

Platform: WinForms |
Control: GridGroupingControl

Display multi-line text

By default, the GridGroupingControl does not have direct support to ReSizeToFit the multi-line text. It can be displayed only by scrolling.


To ReSizeToFit the multi-line text, a workaround solution in the QueryRowHeight event is available. In this event, the cell’s height has been calculated as per the current cell value along with the number of lines.


//Event hooking in constructor.
this.gridGroupingControl1.TableModel.QueryRowHeight += new GridRowColSizeEventHandler(TableModel_QueryRowHeight);
//This event is triggered when the row height is changed.
void TableModel_QueryRowHeight(object sender, GridRowColSizeEventArgs e)
     if (e.Index > 0) 
          IGraphicsProvider graphicsProvider = this.gridGroupingControl1.TableModel.GetGraphicsProvider();
          Graphics g = graphicsProvider.Graphics;
          GridStyleInfo style = this.gridGroupingControl1.TableModel[e.Index, 2];
          GridCellModelBase model = style.CellModel;
          e.Size = model.CalculatePreferredCellSize(g, e.Index, 2, style, GridQueryBounds.Height).Height;
          e.Handled = true;



'Event hooking.
AddHandler gridGroupingControl1.TableModel.QueryRowHeight, AddressOf TableModel_QueryRowHeight
'This event gets triggered when the row height is changed.
Private Sub TableModel_QueryRowHeight(ByVal sender As Object, ByVal e As GridRowColSizeEventArgs)
 If e.Index > 0 Then
     Dim graphicsProvider As IGraphicsProvider = Me.gridGroupingControl1.TableModel.GetGraphicsProvider()
     Dim g As Graphics = graphicsProvider.Graphics
     Dim style As GridStyleInfo = Me.gridGroupingControl1.TableModel(e.Index, 2)
     Dim model As GridCellModelBase = style.CellModel
     e.Size = model.CalculatePreferredCellSize(g, e.Index, 2, style, GridQueryBounds.Height).Height
     e.Handled = True
 End If
End Sub



Since, the height has been calculated in QueryRowHeight event that triggers frequently, the row height cannot be resized.



Display the multiline text in GridGroupingControl

Figure 1: Multi-line text ReSizedToFit


C#: DisplayMultilineText

VB: DisplayMultilineText

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