- Forcing
**Manual****Calculation**For a Workbook Microsoft *Vba*- How to set*calculation**mode*to*manual*- How
**Excel**determines the current**mode**of - Controlling
*Excel**Calculation*- Decision*Models*

## Forcing **Manual** **Calculation** For a Workbook Microsoft

Evaluate also enables you to get the results of a single-cell or multi-cell array formula passed to Evaluate as a string. Evaluate, for example as The difference between using Application. Public Function EVAL(the Input As Variant) As Variant ' ' if UDF evaluate the input string as though it was on this sheet ' else evaluate for activesheet ' Dim v Eval As Variant Application. If the input string resolves to an array formula then EVAL will return the corresponding array of results.

*Vba* - How to set *calculation* *mode* to *manual*

In *Excel* 97 there are two possible methods using either Send Keys or Enable *Calculation*: You can use Send Keys to send the CTRL/ALT/F9 key sequence.

#### How **Excel** determines the current **mode** of

This can be tricky because Sendkeys just sends the keystrokes into the keyboard buffer, and they are not normally processed until **VBA** has ended and you cannot guarantee that they will be processed by the correct window/application etc.

##### Controlling *Excel* *Calculation* - Decision *Models*

In prior versions of **Excel** you can achieve the same effect by switching to **manual**, replacing all equal sns in formulae with equal sns and then either switching back to automatic or doing a **manual** full **calculation** (Ctrl/Alt/F9) Worksheets(Sheet Name). Calculate You can use the Evaluate method of the Application, Worksheet or Chartobject to return the result of calculating a string containing Names, Ranges and/or a Formulae to **VBA** without altering anything on a worksheet. If Evaluate cannot evaluate the string it returns an error rather than raising an error, so to trap the error you need to assn the result to a variant and then check the variant using ISERROR. Evaluate(cstr(the Input)) End If If Is Error(v Eval) Then EVAL = CVErr(xl Err Value) Else EVAL = v Eval End If End If Exit Function funcfail: EVAL = CVErr(xl Err NA) End Function The EVAL function can be ed either as a UDF or from **VBA**.

Excel vba manual calculation mode:

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