designer

164 Chapter 5 Working with Data Views
In this exercise, you create a formula column labeled Sale Price. The sale price is 25 percent
of the unit price for those product lines in the sale. If a product line has 10 or fewer
items in stock, that product line cannot be in the sale. The sale price should be formatted
in dollars, with two decimal places.
SET UP Using SharePoint Designer, open the site you used in the previous exercise if
it is not already open, and then open Stock.aspx in edit mode with the Furniture Price
List DFWP selected.
Add/Remove
Columns
1. On the Data View Tools, Options tab, click Add/Remove Columns in the Fields
group.
The Edit dialog box opens.
2. In the Available fields list, scroll down, click Add Formula Column, and then click
Add.
The XPath Expression Builder dialog box opens.
3. In the Select a field to insert list, double-click Unit_x0020_Price.. Be sure you
choose the field that ends in a dot.
@Unit_x0020_Price. is displayed in the Edit the XPath Expression box.
4. In the Exit the XPath expression box, place the insertion point to the right of Price.,
and then type * (1 - ((@Sale = 'Yes') and (@In_x0020_Stock. >= 10))* 0.25).
Tip The practice file SPDSBSC05.xsl.txt contains this expression if you want to copy and
paste the expression into the XPath Expression Builder dialog box.
The Preview box displays the result of the expression.
5. Click OK twice. The Insert Formula and Edit Columns dialog boxes close.
A new column is added to the DFWP. The column label is the expression you created
in step 4. Only those product lines in the sale have a sales price less than the
unit price.
6. In the column heading, click @Unit. Then click the th.ms-vh label that appears,
and type Sale Price.
7. In the Sale Price column, click 15, and then on the Options tab, click Formula.
The Insert Formula dialog box opens and displays the expression you created in
step 4. If the expression is not shown, close the Insert Formula dialog box and repeat
step 7.
8. In the Select a function category, select Math / Number. In the Select a function
to insert box, click format-number.