IExpressionEval::FlushExpr
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Use this method to remove the specified expression from the expression cache.
Definition
HRESULT IExpressionEval::FlushExpr(longnExprID);
Parameters
nExprID
[in] A long that contains the identifier of the expression to be removed from the expression cache.
Return Values
This method returns an HRESULT indicating whether it completed successfully. See the Error Values section for more details.
Error Values
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.
The following table shows the custom COM errors that this method can return.
| Constant | Value | Description |
| E_EXPR_BADEXPRID | 0x8110000A | Invalid expression ID specified |
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.
Remarks
The FlushExpr method removes the specified expression from the expression cache and decrements the read-only ExprCount property by one (1).
Use the FlushAll method to remove all expressions from the expression cache.