How to get Mac ID using VB.net / C#.net

mac id -Media Access Control ID
you have to add reference of
Imports Microsoft.Win32
Imports System.Management
Imports System.IO

VB::

Dim mc As ManagementClass = New ManagementClass("Win32_NetworkAdapterConfiguration")
Dim moc As ManagementObjectCollection = mc.GetInstances()

For Each mo As ManagementObject In moc

If (MACAddress = String.Empty) Then ' only return MAC Address from first card

If Convert.ToBoolean(mo("IPEnabled")) = True Then
MACAddress = mo("MacAddress").ToString()


mo.Dispose()
End If
End If

Next
MessageBox.Show(MACAddress)


C#:

ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
string MACAddress = String.Empty;
foreach (ManagementObject mo in moc)
{
if (MACAddress == String.Empty) // only return MAC Address from first card
{
if ((bool)mo["IPEnabled"] == true) MACAddress = mo["MacAddress"].ToString();
}
mo.Dispose();
}

MACAddress = MACAddress.Replace(":", "");
MessageBox.Show(MACAddress);

Difference between two dates in C#

public int GetTotalDays(DateTime startedDateTime)

{

//get the current date

DateTime nowDate = System.DateTime.Now;

//use timespan to get the number of days

System.TimeSpan span = nowDate - startedDateTime;

int days = (int)span.TotalDays;

return days;

}

want to revere a string ??? solution is here c# ,VB

we can reverse a string in so many methods..
method 1

string str="Suresh Varma";
char[] rev=str.ToChatArray(str);
Array.Reverse(rev);
Response.Write(new string(rev));

out put...> amraV hseruS


method 2:

string str="9000588819";
string rev="";
for ( int i=0;i < str.length;i++)
{
rev+=str.SubString(str.length-i,1);
}
response.write(rev);


o/p 9188850009

method 3:(works only in VB.net)

Import Microsoft.VisualBasic

dim str as new string=strReverse("varma")
response.Write(str)


o/p amrav