How To Backup a Database in C#

XpertData is Source Folder that we have to take Backup and store it on E:\Web string sourceDir = @"D:\XpertData";
string backupDir = @"E:\web";
try
{
string[] picList = Directory.GetFiles(sourceDir, "*.mdb");
string[] txtList = Directory.GetFiles(sourceDir, "*.ldb");

foreach (string f in picList)
{
string fName = f.Substring(sourceDir.Length + 1);
File.Copy(Path.Combine(sourceDir, fName), Path.Combine(backupDir, fName), true);
}
foreach (string f in txtList)
{

string fName = f.Substring(sourceDir.Length + 1);
try
{
File.Copy(Path.Combine(sourceDir, fName), Path.Combine(backupDir, fName));
}

catch (IOException copyError)
{
Console.WriteLine(copyError.Message);v }
}
}
catch (DirectoryNotFoundException dirNotFound)
{
Console.WriteLine(dirNotFound.Message);
}