OleDbDataReader.GetBoolean(Int32) 方法

定义

获取指定列的布尔值形式的值。Gets the value of the specified column as a Boolean.

public:
 override bool GetBoolean(int ordinal);
public:
 virtual bool GetBoolean(int ordinal);
public override bool GetBoolean (int ordinal);
public bool GetBoolean (int ordinal);
override this.GetBoolean : int -> bool
abstract member GetBoolean : int -> bool
override this.GetBoolean : int -> bool
Public Overrides Function GetBoolean (ordinal As Integer) As Boolean
Public Function GetBoolean (ordinal As Integer) As Boolean

参数

ordinal
Int32

从零开始的列序号。The zero-based column ordinal.

返回

Boolean

列的值。The value of the column.

实现

例外

指定的强制转换无效。The specified cast is not valid.

注解

不执行任何转换;因此,检索的数据必须已是布尔值,否则将生成异常。No conversions are performed; therefore the data retrieved must already be a Boolean, or an exception is generated.

调用 IsDBNull 此方法之前,调用以查找 null 值。Call IsDBNull to look for null values before calling this method.

适用于