- 1 year ago
Ultrawingrid dropdown menu scroll down
To scroll down the dropdown menu in an Ultrawingrid control, you can use the DropDownContainer
property of the column with the dropdown, which provides access to the DropDown
object. Once you have the DropDown
object, you can use its DisplayLayout
property to access the Rows
collection and use the Scroll
method to scroll down.
Here is an example code snippet:
typescriptprivate void ultraGrid1_InitializeLayout(object sender, Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
{
// Access the dropdown control
UltraDropDown dropdown = e.Layout.Bands[0].Columns["ColumnWithDropdown"].ValueList as UltraDropDown;
if (dropdown != null)
{
// Attach the event handler for the dropdown
dropdown.BeforeDropDown += new CancelEventHandler(dropdown_BeforeDropDown);
}
}
void dropdown_BeforeDropDown(object sender, CancelEventArgs e)
{
// Access the dropdown control
UltraDropDown dropdown = sender as UltraDropDown;
if (dropdown != null)
{
// Access the DisplayLayout property to scroll down
UltraGridDropDown displayLayout = dropdown.DisplayLayout;
displayLayout.Rows.Scroll(ScrollType.LineDown);
}
}
In this example, the InitializeLayout
event handler is used to access the UltraDropDown
control for the specified column. The BeforeDropDown
event is then attached to the UltraDropDown
control to handle the scrolling action. Finally, in the dropdown_BeforeDropDown
event handler, the DisplayLayout
property is accessed and the Rows.Scroll
method is called with the ScrollType.LineDown
parameter to scroll the dropdown list down by one line.