|
RAD Studio VCL Reference
|
  |
   |
TCustomClientDataSet.FindKey Method
|
RAD Studio VCL Reference
|
|
|
Searches for a record containing specified field values.
function FindKey(const KeyValues: array of const): Boolean; virtual;
virtual __fastcall Boolean FindKey(const array of const KeyValues);
Call FindKey to search for a specific record in a dataset. KeyValues contains a comma-delimited array of field values, called a key. Each value in the key can be a literal, a variable, nil (Delphi), or NULL (C++). If the number of values passed in KeyValues is less than the number of columns in the index used for the search, the missing values are assumed to be NULL. For C++, KeyValues_Size indicates the index of the last value in the KeyValues array. This is one less than the number of key values.
If a search is successful, FindKey positions the cursor on the matching record and returns true. Otherwise the cursor is not moved, and FindKey returns false.
Executing a Search with Find Methods
|
Copyright(C) 2008 CodeGear(TM). All Rights Reserved.
|
|
What do you think about this topic? Send feedback!
|
Description