Microsoft KB Archive/157484

= XL97: Error When Using Validation Drop-Down List Box =

Article ID: 157484

Article Last Modified on 10/22/2000

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APPLIES TO


 * Microsoft Excel 97 Standard Edition

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This article was previously published under Q157484





SYMPTOMS
In Microsoft Excel 97, when you select a value in a validation drop-down list box, you may receive the following error message:

The cell or chart you are trying to change is protected and therefore read-only.

and you are unable to select a value in the list.



CAUSE
This will occur if all of the following conditions are true:
 * The validation drop-down list box does not refer to a range of cells for its values, but instead contains them directly. -and-


 * The cell containing the validation drop-down list is locked. -and-


 * The worksheet containing the cell is protected.



WORKAROUND
There are two possible workarounds for this problem: you can either unlock the cell that contains the validation drop-down list box, or you can set the validation drop-down list so that it refers to a range of cells, rather than directly containing its own values.

Method 1: Unlock the Cell Containing the Drop-Down List Box

 * 1) If the worksheet in question is currently protected, click the Tools menu, point to Protection, and click "Unprotect Sheet". If you are prompted for a password, enter it and click OK.
 * 2) Select the cell that contains the validation drop-down list. On the Format menu, click Cells.
 * 3) Click the Protection tab.
 * 4) Clear the "Locked" check box and click OK.
 * 5) Repeat steps 2-4 for any other cells in your worksheet that contain validation drop-down boxes.
 * 6) Once all necessary cells have been unlocked, restore the protection on your worksheet. Point to Protection on the Tools menu, and click Protect Sheet (enter a password if necessary).

Method 2: Make Your Drop-Down List Box Refer to a Range of Cells
When you create a validation drop-down list box, you can either input a list of values:

One, Two, Three, Four

Or, you can set the list box to refer to a range of cells for its values:

A1: One

A2: Two

A3: Three

A4: Four

Validation drop-down list boxes created using this second method do not experience any problems when used on a protected worksheet.

To create a validation drop-down list box that refers to a range of cells for its values, follow these steps:  Select the cell that is to contain a validation drop-down list box. On the Data menu, click Validation. Click the Settings tab. In the Allow list box, click "List". Click in the Source edit box, and then either use the mouse to select a range on the worksheet, or enter the range manually. The range in the edit box should look something like this:

=$A$1:$A$4

 Click OK.</ol>

The new validation drop-down list box will work correctly, even if the worksheet is protected.

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STATUS
Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

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MORE INFORMATION
Microsoft Excel 97 includes a new feature called validation. You can use validation to make sure that users only enter specific values, or specific types of values, into cells in Microsoft Excel.

One validation option allows you to attach a drop-down list box to a cell when the cell is selected. If you use this option, users can only enter values in the cell that are contained within the list box. The list box can obtain its values from two different sources: the list box can refer to a range of cells for its values, or it can contain them directly.

To create a validation drop-down list box that directly contains its own values, follow these steps: <ol> Select the cell that is to contain a validation drop-down list box.</li> On the Data menu, click Validation.</li> Click the Settings tab.</li> In the Allow list box, click "List". In the Source edit box, type a list of values, separated by commas. For example:

One, Two, Three, Four

</li> Click OK.</li></ol>

When you select the cell, the drop-down list box appears, and you can select a value from the list. You cannot manually type a value into the cell.

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