共用方式為

SqlCeDataReader.GetSqlDouble Method

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Gets the value of the specified column as a SqlDouble.

Namespace: System.Data.SqlServerCe
Assembly: System.Data.SqlServerCe (in system.data.sqlserverce.dll)

Syntax

'Declaration
Public Overridable Function GetSqlDouble ( _
    ordinal As Integer _
) As SqlDouble
'Usage
Dim instance As SqlCeDataReader
Dim ordinal As Integer
Dim returnValue As SqlDouble

returnValue = instance.GetSqlDouble(ordinal)

public virtual SqlDouble GetSqlDouble (
    int ordinal
)

public:
virtual SqlDouble GetSqlDouble (
    int ordinal
)

public SqlDouble GetSqlDouble (
    int ordinal
)

public function GetSqlDouble (
    ordinal : int
) : SqlDouble

Not applicable.

Parameters

  • ordinal
    The zero-based column ordinal.

Return Value

A SqlDouble.

Exceptions

Exception type Condition

InvalidOperationException

The operation is not valid. The SqlCeDataReader may be positioned after the last row in the result set.

Remarks

No conversions are performed; therefore, the data retrieved must already be a double precision floating point number or an exception is generated.

Platforms

Windows CE, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows XP Professional x64 Edition, Windows XP SP2

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

Version Information

.NET Framework

Supported in: 3.0

.NET Compact Framework

Supported in: 2.0, 1.0

See Also

Reference

SqlCeDataReader Class
SqlCeDataReader Members
System.Data.SqlServerCe Namespace