Excel Late Binding EntireColumn.NumberFormat

Question

Come impostare Range.EntireColumn.NumberFormat utilizzando l'associazione tardiva? Attualmente sto ho questo codice:

object rg = ws.GetType().InvokeMember("Cells", BindingFlags.GetProperty, null, ws, new object[2]{1,iCol}); 
object ec = rg.GetType().InvokeMember("EntireColumn", BindingFlags.GetProperty, null, rg, null); 
rg.GetType().InvokeMember("NumberFormat", BindingFlags.SetProperty, null, rg, new object[1] { "DD/MM/YYYY" }); 

E anche per il metodo di adattamento automatico, ho questo:

object rng = ws.GetType().InvokeMember("UsedRange", BindingFlags.GetProperty, null, ws, null); 
object cols = rng.GetType().InvokeMember("Columns", BindingFlags.GetProperty, null, rng, null); 
cols.GetType().InvokeMember("AutoFit", BindingFlags.InvokeMethod, null, cols, null); 

per l'adattamento automatico non sono sicuro se sto facendo bene.

Answer 1

collaudato

private void button1_Click(object sender, EventArgs e) 
{ 
    object xlApp; 
    object xlWbCol; 
    object xlWb; 
    object xlSheet; 
    object xlRange; 
    object xlWsCol; 

    //~~> create new Excel instance 
    Type tp; 
    tp = Type.GetTypeFromProgID("Excel.Application"); 
    xlApp = Activator.CreateInstance(tp); 

    object[] parameter = new object[1]; 
    parameter[0] = true; 
    xlApp.GetType().InvokeMember("Visible", BindingFlags.SetProperty, null, xlApp, parameter); 
    xlApp.GetType().InvokeMember("UserControl", BindingFlags.SetProperty, null, xlApp, parameter); 

    //~~> Get the xlWb collection 
    xlWbCol = xlApp.GetType().InvokeMember("Workbooks", BindingFlags.GetProperty, null, xlApp, null); 

    //~~> Create a new xlWb 
    xlWb = xlWbCol.GetType().InvokeMember("Add", BindingFlags.InvokeMethod, null, xlWbCol, null); 

    //~~> Get the worksheet collection 
    xlWsCol = xlWb.GetType().InvokeMember("WorkSheets", BindingFlags.GetProperty, null, xlApp, null); 

    //~~> Create a new workxlSheet 
    xlSheet = xlWb.GetType().InvokeMember("Add", BindingFlags.InvokeMethod, null, xlWsCol, null); 

    //~~> Assign cell to xlRange object 
    xlRange = xlSheet.GetType().InvokeMember("Cells", BindingFlags.GetProperty, null, xlSheet, new object[2] { 1, 1 }); 

    //~~> Write a date to cell 
    xlRange.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, xlRange, new object[] { "1-1-2012" }); 

    //~~> Get the column 
    object cols = xlRange.GetType().InvokeMember("Columns", BindingFlags.GetProperty, null, xlRange, null); 

    //~~> Autofit the column 
    cols.GetType().InvokeMember("AutoFit", BindingFlags.InvokeMethod, null, cols, null); 
    //~~> Format the entire Column 
    cols.GetType().InvokeMember("NumberFormat", BindingFlags.SetProperty, null, cols, new object[1] { "DD/MM/YYYY" }); 

    //~~> Release the object 
    //System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp); 
} 

Nota: Aggiungere using System.Reflection; In cima

FOLLOWUP

Per Adatta per usedrange questo funziona

private void button1_Click(object sender, EventArgs e) 
{ 
    object xlApp; 
    object xlWbCol; 
    object xlWb; 
    object xlSheet; 
    object xlRangeUsdRng; 
    object xlRange; 
    object xlWsCol; 

    //~~> create new Excel instance 
    Type tp; 
    tp = Type.GetTypeFromProgID("Excel.Application"); 
    xlApp = Activator.CreateInstance(tp); 

    object[] parameter = new object[1]; 
    parameter[0] = true; 
    xlApp.GetType().InvokeMember("Visible", BindingFlags.SetProperty, null, xlApp, parameter); 
    xlApp.GetType().InvokeMember("UserControl", BindingFlags.SetProperty, null, xlApp, parameter); 

    //~~> Get the xlWb collection 
    xlWbCol = xlApp.GetType().InvokeMember("Workbooks", BindingFlags.GetProperty, null, xlApp, null); 

    //~~> Create a new xlWb 
    xlWb = xlWbCol.GetType().InvokeMember("Add", BindingFlags.InvokeMethod, null, xlWbCol, null); 

    //~~> Get the worksheet collection 
    xlWsCol = xlWb.GetType().InvokeMember("WorkSheets", BindingFlags.GetProperty, null, xlApp, null); 

    //~~> Create a new workxlSheet 
    xlSheet = xlWb.GetType().InvokeMember("Add", BindingFlags.InvokeMethod, null, xlWsCol, null); 

    //~~> Assign cell F5 to xlRange object for testing purpose 
    xlRange = xlSheet.GetType().InvokeMember("Cells", BindingFlags.GetProperty, null, xlSheet, new object[2] {5, 6 }); 
    xlRange.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, xlRange, new object[] { "1-1-2012" }); 

    //~~> Assign UsedRange 
    xlRangeUsdRng = xlSheet.GetType().InvokeMember("UsedRange", BindingFlags.GetProperty, null, xlSheet, null); 

    //~~> Get the Columns 
    object cols = xlRangeUsdRng.GetType().InvokeMember("EntireColumn", BindingFlags.GetProperty, null, xlRangeUsdRng, null); 

    //~~> Autofit 
    cols.GetType().InvokeMember("AutoFit", BindingFlags.InvokeMethod, null, cols, null); 

}