protected void Button1_Click(object sender, EventArgs e)
        {
            eventsource_info.InsertParameters["event_title"].DefaultValue      = TextBox7.Text.ToUpper().Trim();
            eventsource_info.InsertParameters["multi_day_event"].DefaultValue  = RadioButtonList1.SelectedValue;
            eventsource_info.InsertParameters["event_start_date"].DefaultValue = TextBox10.Text.ToUpper().Trim();
            eventsource_info.InsertParameters["event_start_time"].DefaultValue = TextBox11.SelectedValue;
            eventsource_info.InsertParameters["event_end_date"].DefaultValue   = TextBox12.Text.ToUpper().Trim();
            eventsource_info.InsertParameters["event_end_time"].DefaultValue   = TextBox24.Text.ToUpper().Trim();
            eventsource_info.InsertParameters["event_place"].DefaultValue      = CheckBoxList1.SelectedValue();
            eventsource_info.InsertParameters["event_capacity"].DefaultValue   = TextBox15.Text.ToUpper().Trim();
            eventsource_info.InsertParameters["audio_visual"].DefaultValue     = RadioButtonList2.Text.ToUpper().Trim();


            TextBox7.Text  = string.Empty;
            TextBox10.Text = string.Empty;
            TextBox11.Text = string.Empty;

            TextBox12.Text = string.Empty;
            TextBox24.Text = string.Empty;
            TextBox15.Text = string.Empty;
        }