Creating ID Dynamically in ASP.Net

C# using id creation dynamically in ASP.Net.

Aspx:cs

  string SelectID;

  int ID;
 

  --Database Table Count

SelectID = "Select COUNT(*) AS Count From Sample";

SqlDataAdapter da2 = new SqlDataAdapter(SelectInvoiceID, cn);

DataSet dsInvoiceID = new DataSet();

da2.Fill(dsInvoiceID);

if (dsInvoiceID.Tables[0].Rows.Count != 0)

{

   int a =

   Convert.ToInt16(dsInvoiceID.Tables[0].Rows[0]["Count"].ToString());

   int C = a + 1;
 

 //ID  creates dynamically if ID count <10
 

 if (C > 0 && C <= 9)

{

      ID = "abc0000" + C;

}

 

//ID  creates dynamically if ID count 10 to 99
 

else if (C > 9 && C <= 99)

{

       ID = "abc000" + C;

}
 

//ID  creates dynamically if ID count 100 to 999
 

else if (C > 99 && C <= 999) ID = "abc00" + C;
 

//ID  creates dynamically if ID count 1000 to 9999
 

else if (C > 999 && C <= 9999) ID = "abc0" + C;
 

//ID  creates dynamically if ID count 10000 to 99999
 

else if (C > 9999 && C <= 99999) ID = "abc" + C;