通过

  • 项目

Item 属性

Gets or sets the value of a column in the buffer by using its index in the array of buffer column indexes.

命名空间：  Microsoft.SqlServer.Dts.Pipeline
程序集：  Microsoft.SqlServer.TxScript（在 Microsoft.SqlServer.TxScript.dll 中）

语法

声明
Protected Default Property Item ( _
    ColumnIndex As Integer _
) As Object
    Get
    Set
用法
Dim ColumnIndex As Integer
Dim value As Object

value = Me(ColumnIndex)

Me(ColumnIndex) = value

protected Object this[
    int ColumnIndex
] { get; set; }

protected:
property Object^ default[int ColumnIndex] {
    Object^ get (int ColumnIndex);
    void set (int ColumnIndex, Object^ value);
}

member Item : Object with get, set

JScript 支持使用索引属性，但不支持声明新索引属性。

参数

属性值

类型：System. . :: . .Object
The value of a column in the buffer by using its index in the array of buffer column indexes.

注释

The Script component developer does not use the ScriptBuffer class directly, but indirectly, through the derived classes in the BufferWrapper project item that represent the component's input and outputs.

The developer does not have to use the Item property, because the derived classes provide typed accessors for each buffer column, with property names that correspond to the column names.

示例

The following sample code from the autogenerated BufferWrapper project item demonstrates how the Script component implicitly uses the Item method to retrieve a column from the buffer.

    Public ReadOnly Property [City]() As String
        Get
            Return CType(Me(1), String)
        End Get
    End Property