OleDbDataReader.GetInt32(Int32) 方法

定义

获取指定列的 32 位带符号整数形式的值。Gets the value of the specified column as a 32-bit signed integer.

public:
 virtual int GetInt32(int ordinal);

public int GetInt32 (int ordinal);

override this.GetInt32 : int -> int

Public Function GetInt32 (ordinal As Integer) As Integer

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

Int32

指定列的值。The value of the specified column.

InvalidCastException

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

不执行任何转换;因此，检索的数据必须已经是32位有符号整数。No conversions are performed; therefore, the data retrieved must already be a 32-bit signed integer.

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.