Startup Event
The document is archived and information here might be outdated

Worksheet.Startup Event

Occurs after the worksheet is running and all the initialization code in the assembly has been run.

Namespace: Microsoft.Office.Tools.Excel
Assembly: Microsoft.Office.Tools.Excel (in

public event EventHandler Startup

The last thing to run in the constructor of the class that the user code is running in.

The following code example demonstrates a handler for the Startup event that displays a message when the worksheet has been initialized.

private void WorksheetStartup()
    this.Startup += new EventHandler(Worksheet1_Startup);

void Worksheet1_Startup(object sender, EventArgs e)
    MessageBox.Show(this.Name + " is starting up.");

© 2016 Microsoft