c# - C# の DataAdapter.Update() メソッドのエラー

Question

次の Insert Command を実行しようとしていますが、動作しておらず、例外も表示されていません。私が間違ったことをしている場所を誰かに教えてもらえますか?

using System;
using System.Data;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;
using System.Security.Principal;

public partial class StoredProcedures
{
   [Microsoft.SqlServer.Server.SqlProcedure]
   public static void USP_tempSP()
   {   
       DataTable objDataTable = new DataTable();
       using (SqlConnection objConn = new SqlConnection("context connection=true"))
       {
           objConn.Open();
           SqlCommand objCmd = new SqlCommand();
           objCmd.CommandType = CommandType.Text;

           objCmd.Connection = objConn;
           objCmd.CommandText = "select * from temp"; 
           /*table Structure
            *CREATE TABLE [dbo].[temp]([empname] [varchar](20)  NULL,[createdon] [datetime] NULL,[emp_id] [varchar](4) NULL
           ) 
           */
           SqlDataAdapter objDataAdapter = new SqlDataAdapter(objCmd.CommandText, objConn);
           objDataAdapter.Fill(objDataTable);

           SqlCommand objCmd1 = new SqlCommand();
           objCmd1.CommandType = CommandType.Text;
           objCmd1.UpdatedRowSource = UpdateRowSource.None;
           objCmd.CommandText = "Insert into tempCopy " +
                               " values(@empname,@createdon)";
           /*table Structure
            *CREATE TABLE [dbo].[tempCopy]([empname] [varchar](20)  NULL,[createdon] [datetime] NULL
            ) 
           */
           objCmd.Parameters.Add("@empname", SqlDbType.VarChar, 20, objDataTable.Columns["empname"].ColumnName);
           objCmd.Parameters.Add("@createdon", SqlDbType.DateTime, 8, objDataTable.Columns["createdon"].ColumnName);

           SqlDataAdapter adpt = new SqlDataAdapter();
           adpt.InsertCommand = objCmd;
           adpt.UpdateBatchSize = objDataTable.Rows.Count;
           try
           {
               int recordsInserted = adpt.Update(objDataTable);
           }
           catch(Exception ex)
           {
               //
           }

           objConn.Close();
        }
    }
}