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SqlCeDataReader.GetOrdinal Method

  • Artikel

Gets the column ordinal, given the name of the column.

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

Syntax

'Declaration
Public Overrides Function GetOrdinal ( _
    name As String _
) As Integer
'Usage
Dim instance As SqlCeDataReader
Dim name As String
Dim returnValue As Integer

returnValue = instance.GetOrdinal(name)

public override int GetOrdinal (
    string name
)

public:
virtual int GetOrdinal (
    String^ name
) override

public int GetOrdinal (
    String name
)

public override function GetOrdinal (
    name : String
) : int

Not applicable.

Parameters

  • name
    The name of the column.

Return Value

The zero-based column ordinal.

Exceptions

Exception type Condition

IndexOutOfRangeException

The name specified is not a valid column name.

InvalidOperationException

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

Remarks

GetOrdinal performs a case-sensitive lookup first. If it fails, a second case-insensitive search is made.

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.

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
GetName