Excel workbooks are published on SharePoint and viewed using the Excel Web Access web part. But the workbook is available in read-only mode when viewed using this web part. A configured Excel workbook can be very well used for developing applications to facilitate a what-if analysis. In this tip we will explore one of the ways to facilitate what-if analysis.
Excel is generally programmed by business users using formulas to derive / calculate values on pre-existing data. This calculation is based on a set of parameters that drive the calculation. Let us try to create an Excel spreadsheet with some data and calculated fields.
Step 1: Using Excel, create a new workbook. Create two fields with the names Value 1 and Value 2 and populate it with some numeric data.
Step 2: Right-click on a column and select "Define name", and name it "Operator". Our intention is to get a calculated value in a field named "Result" based on the selected operator.
Step 3: For the Result field, add the formula as shown in the screenshot below.
Step 4: From the File menu, select "Save and Send" -> "Save to SharePoint", and select Publish Options. In the Parameters tab, click "Add", select the "Operator" object we created earlier and click "OK".
Step 5: When the same workbook is viewed using Excel Web Access web part, a parameters
pane will be displayed which will have the same parameter that we added while publishing
the workbook. Enter "*", click on Apply and watch the effect. Now enter "+" as the
operator and you will be able to see that the calculated fields are updated accordingly!
In real life projects, this feature can be effectively used for an application like a loan calculator, a tax calculator, creating graphs dynamically based on input parameters etc. for what-if analysis.
- Try to add different parameters of different data types to the workbook.
- Publish these parameters with different scopes, and try to use the same parameter in more than one worksheet.
- Check out these other tips:
Last Update: 2011-08-25
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