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ADO Mode 属性


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The Mode property sets or returns a ConnectModeEnum value that indicates the permission for modifying data in a Connection, Record, or Stream object. This property is read/write when an object is closed, and read-only when an object is open.
Mode属性的作用是:设置或返回一个ConnectModeEnum值,它的作用是指示是否允许在一个连接、记录或记录流对象中修改数据信息。当对象被关闭时,该属性对其有可读/可写权限;如果对象被打开后,该书行进对其有只读功能。

  • Connection object - Default is adModeUnknown
    Connection 对象 – 默认值为adModeUnknown
  • Record object - Default is adModeRead
    Record 对象 – 默认值为adModeRead
  • Stream object - Default is adModeRead or adModeUnknown
    Stream 对象 – 默认值为adModeRead 或 adModeUnknown

Note: This property can be set only when the Connection object is closed.
注意:该属性仅允许在连接关闭时设置。

Syntax
语法

object.Mode

Example
案例

<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Mode=adModeReadWrite
conn.Open(Server.Mappath("northwind.mdb"))
response.write(conn.Mode)
conn.Close
%> 


ConnectModeEnum

Constant常量 Value值 Description描述
adModeUnknown 0 Permissions have not been set or cannot be determined.
表明权限尚未设置或无法确定
adModeRead 1 Read-only.
权限为只读
adModeWrite 2 Write-only.
权限为只写
adModeReadWrite 3 Read/write.
权限为可读/可写
adModeShareDenyRead 4 Prevents others from opening a connection with read permissions.
防止其他用户使用读权限打开连接
adModeShareDenyWrite 8 Prevents others from opening a connection with write permissions.
防止其他用户使用写权限打开连接
adModeShareExclusive 12 Prevents others from opening a connection.
防止其他用户打开连接
adModeShareDenyNone 16 Allows others to open a connection with any permissions.
允许其他用户使用任何权限打开连接
adModeRecursive 0x400000 Used with adModeShareDenyNone, adModeShareDenyWrite, or adModeShareDenyRead to set permissions on all sub-records of the current Record.
通过使用adModeShareDenyNone、adModeShareDenyWrite或adModeShareDenyRead设置当前记录中所有子记录的权限
 

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