How to: Programmatically run Excel calculations

You use a similar process to run calculations in a NamedRange control or a native Excel range object.

Applies to: The information in this topic applies to document-level projects and VSTO Add-in projects for Excel. For more information, see Features available by Office application and project type.

Run calculations in a NamedRange control

The following example creates a NamedRange at cell A1 and then calculates the cell. This code must be placed in a sheet class, not in the ThisWorkbook class.

To run calculations in a NamedRange control

  1. Create the named range.

    Microsoft.Office.Tools.Excel.NamedRange NamedRange1 =
        this.Controls.AddNamedRange(this.get_Range("A1"), "NamedRange1");
    
    Dim NamedRange1 As Microsoft.Office.Tools.Excel.NamedRange = _
        Me.Controls.AddNamedRange(Me.Range("A1"), "NamedRange1")
    
  2. Call the Calculate method of the specified range.

    NamedRange1.Calculate();
    
    NamedRange1.Calculate()
    

Run calculations in a native Excel range

To run calculations in a native Excel range

  1. Create the named range.

    Excel.Range rng = this.Application.get_Range("A1");
    
    Dim rng As Excel.Range = Me.Application.Range("A1")
    
  2. Call the Calculate method of the specified range.

    rng.Calculate();
    
    rng.Calculate()
    

See also