IExpressionStore::GetAllExprs Method [C++]

Article
11/12/2009

Use this method to retrieve an ADO hierarchical Recordset object that contains all the expressions residing in the expression store.

Definition

[C++]

HRESULT IExpressionStore::GetAllExprs(_Recordset**ppRSExprs);

[Visual Basic]

Function GetAllExprs() As Object

Parameters

ppRSExprs[C++]
[out, retval] An address of a pointer to an ADO hierarchical Recordset object that contains all the expressions residing in the expression store.

[Visual Basic] None.

Return Values

[C++] This method returns an HRESULT indicating whether it completed successfully. See the Error Values section for more details.

[Visual Basic] This method returns an ADO hierarchical Recordset object. If successful, the Recordset object contains the expressions currently residing in the expression store. If unsuccessful, the Recordset object is set to Nothing.

Error Values

[C++] This method returns S_OK (0x00000000) to indicate success and either standard or custom COM HRESULT error values to indicate failure. For more information about standard COM errors, see Standard COM Errors.

[Visual Basic] This method sets the Number property of the global Err object to S_OK (&H00000000) to indicate success and to either standard or custom COM error values to indicate failure. For more information about standard COM errors, see Standard COM Errors.

The following table shows the custom COM errors that this method can return.

Constant	Value	Description
E_EXPR_BADCONNECTION	[C++] 0x8110001F [Visual Basic] &H8110001F	Invalid connection
E_EXPR_NOCONNECTIONSTRING	[C++] 0x8110000D [Visual Basic] &H8110000D	No connection string specified

E_EXPR_BADCONNECTION

[C++] 0x8110001F

[Visual Basic] &H8110001F

Invalid connection

E_EXPR_NOCONNECTIONSTRING

[C++] 0x8110000D

[Visual Basic] &H8110000D

No connection string specified

[C++] Additional information may be available using the global Err object, which can be accessed using the API function GetErrorInfo. In particular, the GetDescription method of the IErrorInfo interface may return a text description of the error.

[Visual Basic] Additional information may be available using the global Err object. In particular, the Description property may contain a text description of the error.

Remarks

[C++] The Recordset object contains one record for each expression in the expression store. For information on the format and fields of the Recordset object, see Expression Recordset.

[Visual Basic] The Recordset object contains one record for each expression in the expression store. For information on the format and fields of the Recordset object, see Expression Recordset.

Use the GetExpression method to retrieve a single expression from the expression store.

Call the Connect method before calling the GetAllExprs method.

For more information about memory ownership issues related to COM property and method parameters, see Managing COM Parameter Memory.