ComboBox in Virtual Grid

[Ken Law]

I''m trying to use a combobox in a virtual grid with code like this in the QueryCellInfo event:

e.Style.CellType = "ComboBox";
StringCollection sc = new StringCollection();
sc.Add("A");
sc.Add("B");
sc.Add("C");
e.Style.ChoiceList = sc;
e.Style.DropDownStyle = GridDropDownStyle.Exclusive;
e.Handled = true;

The cell looks like a combobox but I just can''t seem to get it to activate. When I click on it I get no dropdown list. I''ve looked at all the likely properties of the grid (enabled, readonly, etc.) but to no avail.

[Administrator]

Hi Ken, That has to work, please check out the same implementation in this sample. Best regards, Stanley

[Ken Law]

The sample works fine. Maybe the problem is in the code generated by the designer - here it is:

//
// vgStationCounters
//
this.vgStationCounters.AllowSelection = Syncfusion.Windows.Forms.Grid.GridSelectionFlags.Cell;
this.vgStationCounters.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.vgStationCounters.BackColor = System.Drawing.SystemColors.ControlText;
gridBaseStyle1.Name = "Header";
gridBaseStyle1.StyleInfo.Borders.Bottom = new Syncfusion.Windows.Forms.Grid.GridBorder(Syncfusion.Windows.Forms.Grid.GridBorderStyle.None);
gridBaseStyle1.StyleInfo.Borders.Left = new Syncfusion.Windows.Forms.Grid.GridBorder(Syncfusion.Windows.Forms.Grid.GridBorderStyle.None);
gridBaseStyle1.StyleInfo.Borders.Right = new Syncfusion.Windows.Forms.Grid.GridBorder(Syncfusion.Windows.Forms.Grid.GridBorderStyle.None);
gridBaseStyle1.StyleInfo.Borders.Top = new Syncfusion.Windows.Forms.Grid.GridBorder(Syncfusion.Windows.Forms.Grid.GridBorderStyle.None);
gridBaseStyle1.StyleInfo.CellType = "Header";
gridBaseStyle1.StyleInfo.Font.Bold = true;
gridBaseStyle1.StyleInfo.Interior = new Syncfusion.Drawing.BrushInfo(Syncfusion.Drawing.GradientStyle.Vertical, System.Drawing.Color.FromArgb(((System.Byte)(203)), ((System.Byte)(199)), ((System.Byte)(184))), System.Drawing.Color.FromArgb(((System.Byte)(238)), ((System.Byte)(234)), ((System.Byte)(216))));
gridBaseStyle1.StyleInfo.VerticalAlignment = Syncfusion.Windows.Forms.Grid.GridVerticalAlignment.Middle;
gridBaseStyle2.Name = "Column Header";
gridBaseStyle2.StyleInfo.BaseStyle = "Header";
gridBaseStyle2.StyleInfo.HorizontalAlignment = Syncfusion.Windows.Forms.Grid.GridHorizontalAlignment.Center;
gridBaseStyle3.Name = "Row Header";
gridBaseStyle3.StyleInfo.BaseStyle = "Header";
gridBaseStyle3.StyleInfo.HorizontalAlignment = Syncfusion.Windows.Forms.Grid.GridHorizontalAlignment.Left;
gridBaseStyle3.StyleInfo.Interior = new Syncfusion.Drawing.BrushInfo(Syncfusion.Drawing.GradientStyle.Horizontal, System.Drawing.Color.FromArgb(((System.Byte)(203)), ((System.Byte)(199)), ((System.Byte)(184))), System.Drawing.Color.FromArgb(((System.Byte)(238)), ((System.Byte)(234)), ((System.Byte)(216))));
gridBaseStyle4.Name = "Standard";
gridBaseStyle4.StyleInfo.Font.Facename = "Tahoma";
gridBaseStyle4.StyleInfo.Font.Size = 11F;
gridBaseStyle4.StyleInfo.Interior = new Syncfusion.Drawing.BrushInfo(System.Drawing.Color.Black);
gridBaseStyle4.StyleInfo.TextColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
this.vgStationCounters.BaseStylesMap.AddRange(new Syncfusion.Windows.Forms.Grid.GridBaseStyle[] {
gridBaseStyle1,
gridBaseStyle2,
gridBaseStyle3,
gridBaseStyle4});
this.vgStationCounters.ColCount = 0;
this.vgStationCounters.ColWidthEntries.AddRange(new Syncfusion.Windows.Forms.Grid.GridColWidth[] {
new Syncfusion.Windows.Forms.Grid.GridColWidth(0, 35)});
this.vgStationCounters.EnterKeyBehavior = Syncfusion.Windows.Forms.Grid.GridDirectionType.None;
this.vgStationCounters.ForeColor = System.Drawing.SystemColors.Control;
this.vgStationCounters.Location = new System.Drawing.Point(200, 40);
this.vgStationCounters.Name = "vgStationCounters";
this.vgStationCounters.Properties.BackgroundColor = System.Drawing.Color.Black;
this.vgStationCounters.RowCount = 0;
this.vgStationCounters.SelectCellsMouseButtonsMask = System.Windows.Forms.MouseButtons.None;
this.vgStationCounters.Size = new System.Drawing.Size(568, 96);
this.vgStationCounters.SmartSizeBox = false;
this.vgStationCounters.TabIndex = 13;
this.vgStationCounters.Text = "gridControl1";
this.vgStationCounters.QueryColCount += new Syncfusion.Windows.Forms.Grid.GridRowColCountEventHandler(this.vgStationCounters_QueryColCount);
this.vgStationCounters.QueryColWidth += new Syncfusion.Windows.Forms.Grid.GridRowColSizeEventHandler(this.vgStationCounters_QueryColWidth);
this.vgStationCounters.QueryRowCount += new Syncfusion.Windows.Forms.Grid.GridRowColCountEventHandler(this.vgStationCounters_QueryRowCount);
this.vgStationCounters.QueryCellInfo += new Syncfusion.Windows.Forms.Grid.GridQueryCellInfoEventHandler(this.vgStationCounters_QueryCellInfo);
this.vgStationCounters.SaveCellInfo += new Syncfusion.Windows.Forms.Grid.GridSaveCellInfoEventHandler(this.vgStationCounters_SaveCellInfo);
this.vgStationCounters.QueryRowHeight += new Syncfusion.Windows.Forms.Grid.GridRowColSizeEventHandler(this.vgStationCounters_QueryRowHeight);

[stanleyj]

Hi Ken,

Please comment out this code.

this.vgStationCounters.SelectCellsMouseButtonsMask = System.Windows.Forms.MouseButtons.None;

Best regards,
Stanley

[Ken Law]

Thanks - that did the trick.