C#

Application xl = new Application();

var workbooks = xl.Workbooks;
Workbook workbook = workbooks.Open(FileName);

try
{
    Worksheet ws = (Worksheet)workbook.Sheets[1];
    ws.SaveAs(destination, XlFileFormat.xlCSV);
    Marshal.ReleaseComObject(ws);
}
finally
{
    xl.DisplayAlerts = false;
    xl.Quit();
    Marshal.ReleaseComObject(workbook);
    Marshal.ReleaseComObject(workbooks);
    Marshal.ReleaseComObject(xl);
}

DammyMulero wrote:

Am very new to programming language and I am interested to become C# programmer.

DammyMulero wrote:

How do I write a C# code

uint a = 396 ;
uint b = 398565 ;

uint c = ( a << 20 ) | ( b & 0x0FFFFFu ) ;

byte[] d = new byte [ sizeof(uint) ] ;

for ( int i = 0 ; i < d.Length ; i++ )
{
    d [ i ] = (byte ) ( ( c >> 8 * i ) & 0x0FF ) ;
}

uint e = 0 ;

for ( int i = 0 ; i < d.Length ; i++ )
{
    e |= (uint) ( d [ i ] << 8 * i ) ;
}

uint f = e >> 20 ;
uint g = e & 0x0FFFFFu ;

BitConverter.GetBytes()

BitConverter.ToUInt32()

Luc Pattyn wrote:

what you want

private static unsafe byte[]
ToByteArray
(
    object Value
,
    byte[] Buffer
)
{
    System.Runtime.InteropServices.GCHandle h =
        System.Runtime.InteropServices.GCHandle.Alloc
        ( Value , System.Runtime.InteropServices.GCHandleType.Pinned ) ;
    try
    {
        byte* b = (byte*) h.AddrOfPinnedObject().ToPointer() ;

        for ( int i = 0 ; i < Buffer.Length ; i++ )
        {
            Buffer [ i ] = b [ i ] ;
        }
    }
    finally
    {
        h.Free() ;
    }
    return ( Buffer ) ;
}