[C#]สอบถามผู้รู้คะ รอบกวนขอโค้ด insert datatable ลง database หน่อยคะ

        SqlConnection objConn = new SqlConnection();
		SqlCommand objCmd = new SqlCommand();
		String strConnString,strSQL;

		strConnString = "Server=localhost;UID=sa;PASSWORD=;database=mydatabase;Max Pool Size=400;Connect Timeout=600;";
		
		strSQL = "INSERT INTO customer (CustomerID,Name,Email,CountryCode,Budget,Used) " +
		" VALUES " +
		" ('" + this.txtCustomerID.Text + "','" + this.txtName.Text + "','" + this.txtEmail.Text + "', " +
		" '" + this.txtCountryCode.Text + "','" + this.txtBudget.Text + "','" + this.txtUsed.Text + "')";
		objConn.ConnectionString = strConnString;
		objConn.Open();
		objCmd.Connection = objConn;
		objCmd.CommandText = strSQL;
		objCmd.CommandType = CommandType.Text;

		
		this.pnlAdd.Visible = false;
	
		try
		{
			objCmd.ExecuteNonQuery();
			this.lblStatus.Text = "Record Inserted";
			this.lblStatus.Visible = true;
		}
		catch (Exception ex)
		{
			this.lblStatus.Visible = true;
			this.lblStatus.Text = "Record can not insert Error ("+ ex.Message +")";
		}

		objConn.Close();
		objConn = null;