IDataReader.GetOrdinal 方法
Return the index of the named field.
命名空间： Microsoft.ReportingServices.DataProcessing
程序集： Microsoft.ReportingServices.Interfaces（在 Microsoft.ReportingServices.Interfaces.dll 中）
Microsoft.ReportingServices.SharePoint.UI.WebParts（在 Microsoft.ReportingServices.SharePoint.UI.WebParts.dll 中）
语法
声明
Function GetOrdinal ( _
fieldName As String _
) As Integer
用法
Dim instance As IDataReader
Dim fieldName As String
Dim returnValue As Integer
returnValue = instance.GetOrdinal(fieldName)
int GetOrdinal(
string fieldName
)
int GetOrdinal(
String^ fieldName
)
abstract GetOrdinal :
fieldName:string -> int
function GetOrdinal(
fieldName : String
) : int
参数
- fieldName
类型：System.String
The name of the field to find.
返回值
类型：System.Int32
The index of the named field.
注释
GetOrdinal performs a case-sensitive lookup first. If it fails, a second case-insensitive search is made.
GetOrdinal is kana-width insensitive.
Because ordinal-based lookups are more efficient than named lookups, it is inefficient to call GetOrdinal within a loop. Save time by calling GetOrdinal once and assigning the results to an integer variable for use within the loop.