C#

public class Pamel : Panel {
    // specialization code goes here
}

(TabPage_First as TabPageTemplate).Process()

public abstract partial class UserControlTemplate : UserControl
    {
        public abstract void Process();
        public abstract void Cancel();
        public abstract bool LoseFocus();
        public abstract void Populate(int identifier);
        public abstract event EventHandler PageClosed;
    }

public interface IMySpecialTabPageFunctionality {
       void Process();
       void Cancel();
       bool LoseFocus();
       void Populate(int identifier);
       event EventHandler PageClosed;
}

IMySpecialTabPageFunctionality tabPage=tabControl1.TabPages[0] as IMySpecialTabPageFunctionality;
tabPage.Process();

interface IMySpecialTabPageFunctionality {
    void Process();
}

class MyTabPage : TabPage, IMySpecialTabPageFunctionality {
    public void Process() {
        ...
    }
}

class MyApplication {
    IMySpecialTabPageFunctionality object1;
    TabPage tabPage2;
    MyTabPage tabPage3;
}

interface IMySpecialTabPageFunctionality {
    void Process();
}

class MyTabPage : TabPage, IMySpecialTabPageFunctionality {
    public virtual void Process() {
        ...
    }
}

class MySpecialTabPage1 : MyTabPage  {
    public override void Process() {...}
}

class MySpecialTabPage2 : MyTabPage  {
    public override void Process() {...}
}

StringBuilder sb = new StringBuilder();
     foreach (DataRow item in ds.Tables["TableName"].Rows)
     {
        sb.Append(item["columnName"].ToString());
     }

//format this sb acc. to your need
//put this sb in your email body

<<tash18>> wrote:

is it possible to display as the table

Col1  Col2
 1     A
 2     B

foreach (DataColumn dc in ds.Tables["TableName"].Columns)
{
   sb.Append(dc.ColumnName);
   sb.Append("        ");                
}

//Column end

sb.Append(Environment.NewLine);

//Row data
foreach (DataRow item in ds.Tables["TableName"].Rows)
{
   sb.Append(item["columnName1"].ToString().PadRight(20,' '));
   sb.Append(item["columnName2"].ToString().PadRight(20,' '));
   sb.Append(Environment.NewLine);
}

string folder=Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
folder=Path.Combine(folder, "companyName");
folder=Path.Combine(folder, "productName");
Directory.CreateDirectory(folder);  // no problem if it already exists!
string file=Path.Combine(folder, "document.txt");
File.WriteAllText(file, "this is a file creation demo");
Console.WriteLine("Successfully created file "+file);