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ADO Open Method
 Complete Stream Object Reference
The Open method is used to open a Stream object.
Syntax
| objStream.Open source,mode,opt,username,psword |
| Parameter |
Description |
| source |
Optional. The data source for the Stream object (a URL that points to an existing node in a
tree structure, like an e-mail or file system or a reference to an already opened Record
object). If source is not specified, a new Stream object, with a size of
zero, will be created and opened
|
| mode |
Optional. A ConnectModeEnum value that
specifies the access mode for a Stream object. Default is adModeUnknown
|
| opt |
Optional. A StreamOpenOptionsEnum
value that specifies options for opening a Stream
object. Default is adOpenStreamUnspecified
|
| username |
Optional. A name of a user who can access the Stream object. If
Source is an already opened Record, this parameter is not specified
|
| psword |
Optional. A password that validates the username. If Source
is an already opened Record, this parameter is not specified
|
ConnectModeEnum Values
| Constant |
Value |
Description |
| adModeUnknown |
0 |
Default. Permissions have not been set or cannot be
determined |
| adModeRead |
1 |
Read-only |
| adModeWrite |
2 |
Write-only |
| adModeReadWrite |
3 |
Read/write |
| adModeShareDenyRead |
4 |
Prevents others from opening a connection with read
permissions |
| adModeShareDenyWrite |
8 |
Prevents others from opening a connection with write
permissions |
| adModeShareExclusive |
12 |
Prevents others from opening a connection |
| adModeShareDenyNone |
16 |
Allows others to open a connection with any permissions |
| adModeRecursive |
0x400000 |
Used with adModeShareDenyNone, adModeShareDenyWrite, or
adModeShareDenyRead to set permissions on all sub-records of the current
Record |
StreamOpenOptionsEnum Values
| Constant |
Value |
Description |
| adOpenStreamUnspecified |
-1 |
Default. Opens the Stream object with default
options |
| adOpenStreamAsync |
1 |
Opens the Stream object in asynchronous
mode |
| adOpenStreamFromRecord |
4 |
Identifies the contents of the Source parameter
to be an already open Record
object. The default behavior is to treat Source as a URL that
points directly to a node in a tree structure. The default stream
associated with that node is opened. |
Complete Stream Object Reference
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