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GrapeCity.Win.Spread.InputMan.CellType.CollectionBase-1.FindIndex

FindIndex Method

FindIndex<TTarget>()

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the entire List<T>.

Declaration
public int FindIndex<TTarget>() where TTarget : T
Public Function FindIndex(Of TTarget As T)() As Integer
Returns
Type Description
int

The zero-based index of the first occurrence of an element that matches the conditions defined by match, if found; otherwise, false.
Type Parameters
Name Description
TTarget

FindIndex<TTarget>(Predicate<TTarget>)

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the entire List<T>.

Declaration
public int FindIndex<TTarget>(Predicate<TTarget> match) where TTarget : T
Public Function FindIndex(Of TTarget As T)(match As Predicate(Of TTarget)) As Integer
Parameters
Type Name Description
Predicate<TTarget> match

The Predicate<T> delegate that defines the conditions of the element to search for.
Returns
Type Description
int

The zero-based index of the first occurrence of an element that matches the conditions defined by match, if found; otherwise, false.
Type Parameters
Name Description
TTarget
Exceptions
Type Condition
ArgumentNullException

match is null.

FindIndex<TTarget>(int, Predicate<TTarget>)

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the range of elements in the List<T> that extends from the specified index to the last element.

Declaration
public int FindIndex<TTarget>(int startIndex, Predicate<TTarget> match) where TTarget : T
Public Function FindIndex(Of TTarget As T)(startIndex As Integer, match As Predicate(Of TTarget)) As Integer
Parameters
Type Name Description
int startIndex

The zero-based starting index of the search.
Predicate<TTarget> match

The Predicate<T> delegate that defines the conditions of the element to search for.
Returns
Type Description
int

The zero-based index of the first occurrence of an element that matches the conditions defined by match, if found; otherwise, false.
Type Parameters
Name Description
TTarget
Exceptions
Type Condition
ArgumentOutOfRangeException

startIndex is outside the range of valid indexes for the List<T>.
ArgumentNullException

match is null.

FindIndex<TTarget>(int, int, Predicate<TTarget>)

Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the range of elements in the List<T> that starts at the specified index and contains the specified number of elements.

Declaration
public int FindIndex<TTarget>(int startIndex, int count, Predicate<TTarget> match) where TTarget : T
Public Function FindIndex(Of TTarget As T)(startIndex As Integer, count As Integer, match As Predicate(Of TTarget)) As Integer
Parameters
Type Name Description
int startIndex

The zero-based starting index of the search.
int count

The number of elements in the section to search.
Predicate<TTarget> match

The Predicate<T> delegate that defines the conditions of the element to search for.
Returns
Type Description
int

The zero-based index of the first occurrence of an element that matches the conditions defined by match, if found; otherwise, false.
Type Parameters
Name Description
TTarget
Exceptions
Type Condition
ArgumentOutOfRangeException

count is less than 0.
ArgumentNullException

match is null.