IDataReader.FieldCount 属性

Gets the number of fields in the data reader.

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
ReadOnly Property FieldCount As Integer
    Get
用法
Dim instance As IDataReader
Dim value As Integer

value = instance.FieldCount
int FieldCount { get; }
property int FieldCount {
    int get ();
}
abstract FieldCount : int
function get FieldCount () : int

属性值

类型:System.Int32
When not positioned in a valid recordset, 0; otherwise the number of columns in the current record. The default value is -1.

注释

After executing a query that does not return rows, FieldCount returns -1.