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      How to: Add Custom Totals
      How to: Calculate Multiple Custom Totals with Custom Summary Type
      How to: Calculate Running Totals
      How to: Apply a Filter
      How to: Implement the Group Filter
      How to: Change the Prefilter's Criteria in Code
      How to: Display Underlying Records
      How to: Group Date-Time Values
      How to: Implement Custom Group Intervals
      How to: Implement Custom Summary
      How to: Sort Data by a Data Field
      How to: Sort Data by Individual Columns (Rows)
      How to: Sort Data by Individual Columns (Rows) in OLAP Mode
      How to: Sort Data in Server Mode Using Custom Sorting Algorithm
      How to: Sort Data by OLAP Member Properties
      How to: Prevent End-Users From Changing Filter Conditions
      How to: Replace Default Filter Items with Custom Ones
      How to: Add and Remove Items From Filter Drop-Down Lists
      How to: Sort Filter Drop-Down Items in a Custom Manner
      How to: Locate a Column (Row) Header By Its Column's (Row's) Summary Values
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 End-User Documentation

How to: Prevent End-Users From Changing Filter Conditions

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A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=E2846.

The following example shows how to prevent end-users from changing the filter condition.

In this example, the FieldFilterChanging event is handled to prevent an end-user from hiding the 'Beverages' field value. If an end-user tries to hide the 'Beverages' field value, the event handler sets the event parameter's Cancel property to true to cancel changing the filter condition.

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