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ADO Find 方法


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The Find method searches for a record in a Recordset that satisfies a specified criteria. If the search is successful, the record pointer will point to the first found record.
Find的作用是:按照具体制定的规则在记录集中搜索一条记录。如果搜索成功,那么记录指针将指向首先被发现的记录。

Note: A current row position (like MoveFirst) must be set before calling this method, otherwise an error will occur.
注意:必须在请求该方法之前设置当前行的位置,否则将发生错误。

Syntax
语法

objRecordset.Find(criteria,skiprows,direction,start)

Parameter参数 Description描述
criteria Required. The column name, comparison operator, and value to use in the search.
必要参数。指定列的名称、比较运算符以及用于搜索的值

Examples:
案例

"Country='Norway'"
"Date>#7/22/97#"
"Country LIKE N*"

Note: This method does not support multi-column searches (AND or OR)
注意:该方法不支持多行搜索(即AND或OR)

skiprows Optional. Specifies how many records beyond the current record to skip before beginning the search. Default is 0 
可选参数。指定在开始搜索之前从当前记录起需要跳过的记录数量。默认值为0
direction Optional. A SearchDirectionEnum value that specifies the search direction
可选参数。指定一个SearchDirectionEnum值,用于指明搜索方向
start Optional. The starting position for the search
可选参数。指定搜索的起始位置


SearchDirectionEnum Values

Constant
常量
Value
Description
描述
adSearchBackward -1 Searches backward from the starting position. Stops at the beginning of the Recordset. If no match, the record pointer is placed at the beginning of the Recordset
指定从起始位置向后搜索记录,直到位于记录集的末尾处停止。如果无匹配项,那么记录指针将位于记录集的起始处
adSearchForward 1 Searches forward from the starting position. Stops at the end of the Recordset. If no match, the record pointer is placed at the end of the Recordset
指定从起始位置向前搜索记录,直到位于记录集的末尾处停止。如果无匹配项,那么记录指针将位于记录集的末尾处

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