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Indicating the Types of Operations the Connection Supports

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ADO connections are established using a specific mode, similar to the mode you use when opening a file. The connection mode determines the permissions available to the connection, and hence the types of operations (such as reading and writing) that can be performed using that connection.

Use the Mode property to indicate the connection mode. The possible values are listed in the following table:

ADO connection modes :

Connect Mode Meaning

cmUnknown

Permissions are not yet set for the connection or cannot be determined.

cmRead

Read-only permissions are available to the connection.

cmWrite

Write-only permissions are available to the connection.

cmReadWrite

Read/write permissions are available to the connection.

cmShareDenyRead

Prevents others from opening connections with read permissions.

cmShareDenyWrite

Prevents others from opening connection with write permissions.

cmShareExclusive

Prevents others from opening connection.

cmShareDenyNone

Prevents others from opening connection with any permissions.



The possible values for Mode correspond to the ConnectModeEnum values of the Mode property on the underlying ADO connection object. See the Microsoft Data Access SDK help for more information on these values.

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