DataReader.GetItemMaxLength Method

Retrieves the maximum length, in characters, of data items at the specified index.

Namespace: Microsoft.VisualStudio.Data
Assembly: Microsoft.VisualStudio.Data (in Microsoft.VisualStudio.Data.dll)

Syntax

'宣言
Public MustOverride Function GetItemMaxLength ( _
    index As Integer _
) As Integer
'使用
Dim instance As DataReader
Dim index As Integer
Dim returnValue As Integer

returnValue = instance.GetItemMaxLength(index)

public abstract int GetItemMaxLength(
    int index
)

public:
virtual int GetItemMaxLength(
    int index
) abstract

public abstract function GetItemMaxLength(
    index : int
) : int

Parameters

index
Type: System.Int32

The index of the data item being examined for length.

Return Value

Type: System.Int32

Returns the maximum length, in number of characters, of the data item at the specified index; or, returns -1 if the maximum length is unavailable or is not sensible.

Exceptions

Exception	Condition
ArgumentOutOfRangeException	The index parameter is invalid.

Permissions

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.