GetString Method

Článek
09/27/2010

Gets the value of the specified column as a string.

Namespace: System.Data.SqlServerCe
Assembly: System.Data.SqlServerCe (in System.Data.SqlServerCe.dll)

Syntax

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

returnValue = instance.GetString(ordinal)

public override string GetString(
    int ordinal
)

public:
virtual String^ GetString(
    int ordinal
) override

abstract GetString : 
        ordinal:int -> string 
override GetString : 
        ordinal:int -> string

public override function GetString(
    ordinal : int
) : String

Parameters

ordinal
Type: System. . :: . .Int32
The zero-based column ordinal.

Return Value

Type: System. . :: . .String
The value of the specified column.

Implements

IDataRecord. . :: . .GetString(Int32)

Exceptions

Exception	Condition
InvalidCastException	The specified cast is not valid.
SqlNullValueException	The value is null Nothing nullptr unit a null reference (Nothing in Visual Basic) .
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 string.

Call IsDBNull to check for null values before calling this method.

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