private async void btnAddIssue_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                string   cstmer   = null;
                string   issue    = tbxissue.Text;
                DateTime datetime = DateTime.Now;
                string   comment  = tbxcomment.Text;
                string   picture  = pictureName;

                if (cmbCustomers.SelectedItem == null)
                {
                    cstmer = tbxcustomer.Text;
                }
                else
                {
                    cstmer = cmbCustomers.SelectedValue.ToString();
                }

                string category  = cmbCategory.SelectedValue.ToString();
                string situation = cmbSituation.SelectedValue.ToString();

                await AddDataService.AddIssueToDBAsync(issue, datetime, comment, picture, cstmer, category, situation);

                ClearFields();
            }
            catch { }
        }
        private async void btnUpdate_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                string customerText  = null;
                string situationText = null;
                string categoryText  = null;
                string issueText     = null;

                if (cmbCustomer.SelectedItem.ToString() != cmbCustom)
                {
                    customerText = cmbCustomer.SelectedItem.ToString();
                }

                if (cmbSituation.SelectedItem.ToString() != cmbSit)
                {
                    situationText = cmbSituation.SelectedItem.ToString();
                }
                if (cmbCategory.SelectedItem.ToString() != cmbCat)
                {
                    categoryText = cmbCategory.SelectedItem.ToString();
                }
                if (tbxIssue.Text != tbxIs)
                {
                    issueText = tbxIssue.Text;
                }

                string response = await AddDataService.UpdateCustomerAsync(issueText, customerText, situationText, categoryText, detailId);

                btnUpdateContent(response);
            }
            catch { }
        }
        private async void btnAddComment_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                if (tbxAddComment.Text == "")
                {
                    tbxAddCommentText();
                }
                else
                {
                    string response = await AddDataService.AddCommentToIssueAsync(detailId, tbxAddComment.Text, DateTime.Now);

                    btnCommentContent(response);
                    tbxAddComment.Text = "";
                }
            }
            catch { }
        }