OdbcDataReader.GetFloat(Int32) 方法

定义

获取指定列的单精度浮点数形式的值。Gets the value of the specified column as a single-precision floating-point number.

public:
 override float GetFloat(int i);
public:
 virtual float GetFloat(int i);
public override float GetFloat (int i);
public float GetFloat (int i);
override this.GetFloat : int -> single
abstract member GetFloat : int -> single
override this.GetFloat : int -> single
Public Overrides Function GetFloat (i As Integer) As Single
Public Function GetFloat (i As Integer) As Single

参数

i
Int32

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

返回

指定列的单精度浮点数形式的值。The value of the specified column as a single-precision floating-point number.

实现

例外

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

注解

基于 ODBC 驱动程序的基础功能执行转换。Conversions are performed based on the underlying capabilities of the ODBC driver. 如果不支持转换,则方法调用将失败。If the conversion is not supported then the method call will fail.

调用 IsDBNull 在调用此方法之前查找 null 值。Call IsDBNull to look for null values before calling this method.

适用于

另请参阅