BaseListBoxControl.FindItem(Int32, Boolean, ListBoxFindItemDelegate) Method

Searches for the first list box item in the specified direction from the specified index, using a cusom algorithm.

Namespace: DevExpress.XtraEditors

Assembly: DevExpress.XtraEditors.v23.2.dll

NuGet Package: DevExpress.Win.Navigation

Declaration

C#

public int FindItem(
    int startIndex,
    bool upDown,
    ListBoxFindItemDelegate predicate
)

VB.NET

Public Function FindItem(
    startIndex As Integer,
    upDown As Boolean,
    predicate As ListBoxFindItemDelegate
) As Integer

Parameters

Name	Type	Description
startIndex	Int32	An integer value providing the zero-based index of the start item.
upDown	Boolean	true to search to the end of the item list; false to search to the beginning of the item list.
predicate	DevExpress.XtraEditors.ListBoxFindItemDelegate	A delegate that is called when searching for a list box item.

Returns

Type	Description
Int32	An integer value representing the zero-based index of the first item found. -1 if no item is found.

Remarks

The following example shows how to search for the item whose DisplayText matches the specified text.

C#

using DevExpress.XtraEditors;

private int Find(int startIndex, string searchText) {
    return listBoxControl1.FindItem(startIndex, true, delegate(ListBoxFindItemArgs e) {
        e.IsFound = searchText.Equals(e.DisplayText);
    });
}

//The same method implemented using lambda expressions
private int Find2(int startIndex, string searchText) {
    return listBoxControl1.FindItem(startIndex, true, (ee)=>ee.IsFound = searchText.Equals(ee.DisplayText));
}