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Count Function (Visual Studio Report Designer)

  • Article

Returns a count of the non-null values of the specified expression.

Count(Expression, Scope)

Parameters

  • Expression
    (Variant or Binary) The expression on which to perform the aggregation. The expression cannot contain aggregate functions. Using an expression counts all non-null values of the specified expression.
  • Scope
    (String) The name of a data table, object, grouping, or data region that contains the report items to which to apply the aggregate function. If Scope is specified, the aggregate function applies to all data in the data source, grouping, or data region. For more information about the Scope parameter, see Built-in Functions for Reports (Visual Studio Report Designer).

Return Type

Returns an Integer.

Example

The following code example provides a count of employees in the outermost data region:

Count(Fields!EmployeeID.Value, Nothing)

The following code example provides a count of all orders in the Orders grouping or data region:

Count(Fields!OrderID.Value, "Orders")

See Also

Concepts

Using Expressions in a Report (Visual Studio Report Designer)
Adding Custom Code to a Report (Visual Studio Report Designer)
ReportViewer Controls (Visual Studio)
Built-in Functions for Reports (Visual Studio Report Designer)