public void Function_Click(IRibbonControl control_)
{
Xl.Application xlApp = (Xl.Application)ExcelDna.Integration.ExcelDnaUtil.Application;
String fname = control_.Id;
fname = "=" + fname + "()";
Xl.Range rg = xlApp.ActiveCell;
String cellName = ExcelUtil.ExcelColumnIndexToName(rg.Column) + rg.Row;
Xl._Worksheet sheet = (Xl.Worksheet)xlApp.ActiveSheet;
Xl.Range range = sheet.get_Range(cellName, System.Type.Missing);
string previousFormula = range.FormulaR1C1.ToString();
range.Value2 = fname;
range.Select();
syncContext_ = SynchronizationContext.Current;
if (syncContext_ == null)
{
syncContext_ = new System.Windows.Forms.WindowsFormsSynchronizationContext();
}
FunctionWizardThread othread = new FunctionWizardThread(range, syncContext_);
Thread thread = new Thread(new ThreadStart(othread.functionargumentsPopup));
thread.Start();
}