problem in Creating Excel Sheet from datatable

Hi Im converting DataTable To Excel Format using oledb im using following code

private void btnexcel_Click(object sender, EventArgs e)
 {
     Dictionary<String, String> schema = dac.DatasourceSchema(tablename); //data tables Columns Headers And Data types

     string[] values = schema.Values.ToArray(); // column Headers
     string[] keys = schema.Keys.ToArray();       // datatypes
     SaveFileDialog saveFileDialog = new SaveFileDialog();

     saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
     if (saveFileDialog.FileName != null)
     {
         System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection();
         try
         {
             string pathOfFileToCreate = saveFileDialog.FileName.ToString();
             conn.ConnectionString = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 12.0 Xml;HDR=YES"";", pathOfFileToCreate);
             conn.Open();
             var cmd = conn.CreateCommand();
            //should create below command with schema  key value pairs
             cmd.CommandText = "CREATE TABLE sheet1 (ID INTEGER,NAME NVARCHAR(100))"; /
             cmd.ExecuteNonQuery();
             for (int i = 0; i < 1000; i++) // Sample Data Insert 
             {
                 cmd.CommandText = String.Format("INSERT INTO sheet1 (ID,NAME) VALUES({0},'{1}')", i, "Name" + i.ToString());
                 cmd.ExecuteNonQuery(); // Execute insert query against excel file.
             }
         }
         finally
         {
             if (conn.State == ConnectionState.Open)
                 conn.Close();
         }
     }


 }
i want to insert my Dictinary key value pairs in below command
   cmd.CommandText = "CREATE TABLE sheet1 (ID INTEGER,NAME NVARCHAR(100))"; /
             cmd.ExecuteNonQuery();