How to load custom control as popup in ComboBoxDropDown?

Platform: WinForms |

Control: GridGroupingControl |

Published Date: February 24, 2015 |

Last Revised Date: May 22, 2019

You can load the custom control as popup controls in ComboDropDown. Refer to the following code example to load GridGroupingControl as its dropdown control.

//Load GridGrouping as a popup control.
this.comboDropDown1.PopupControl = this.gridGroupingControl1;
DataTable dt = new DataTable();
dt.Columns.Add("ProductName");
dt.Columns.Add("ProductID");
dt.Columns.Add("UnitPrice");
for (int i = 0; i < 5; i++)
    dt.Rows.Add("Product" + i.ToString());
this.comboDropDown1.PopupControl.Height = 200;
this.comboDropDown1.PopupControl.Width = 100;
gridGroupingControl1.DataSource = dt;

'Load GridGrouping as a popup control.
Me.comboDropDown1.PopupControl = Me.gridGroupingControl1
Dim dt As New DataTable()
dt.Columns.Add("ProductName")
dt.Columns.Add("ProductID")
dt.Columns.Add("UnitPrice")
For i As Integer = 0 To 4
    dt.Rows.Add("Product" & i.ToString())
Next i
Me.comboDropDown1.PopupControl.Height = 200
Me.comboDropDown1.PopupControl.Width = 100
gridGroupingControl1.DataSource = dt

Screenshot:

Showing ComboDropDown with GridGrouping control