IExpressionStore::GetAllExprs Method
Use this method to retrieve an ADO hierarchical Recordset object that contains all the expressions residing in the expression store.
HRESULT IExpressionStore::GetAllExprs(
_Recordset** ppRSExprs
);
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.
Return Value
[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 |
0x8110001F &H8110001F |
Invalid connection |
E_EXPR_NOCONNECTIONSTRING |
0x8110000D &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
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.
The ppRSExprs parameter contains valid data only if the method completes successfully.