894666: Added KB.

Author: JanakiramanSakthivel

ej2-asp-core-mvc/spreadsheet/open-save.md

@@ -194,6 +194,8 @@ You can find the server endpoint code to fetch and process the Excel file in thi
 
 Before proceeding with the opening process, you should deploy the spreadsheet open/save web API service in AWS Lambda. To host the open/save web service in the AWS Lambda environment, please refer to the following KB documentation.
 
+[How to deploy a spreadsheet open and save web API service to AWS Lambda](https://support.syncfusion.com/kb/article/17184/how-to-deploy-a-spreadsheet-open-and-save-web-api-service-to-aws-lambda)
+
 After deployment, you will get the AWS service URL for the open and save actions. Before opening the Excel file with this hosted open URL, you need to prevent the default file opening process to avoid getting a corrupted file on the open service end. The spreadsheet component appends the file to the `formData` and sends it to the open service, which causes the file to get corrupted. To prevent this, set the `args.cancel` value to `true` in the [`beforeOpen`](https://help.syncfusion.com/cr/aspnetcore-js2/Syncfusion.EJ2.Spreadsheet.Spreadsheet.html#Syncfusion_EJ2_Spreadsheet_Spreadsheet_BeforeOpen) event. After that, you will get the selected file in the `beforeOpen` event argument. Then, convert this file into a base64 string and send it to the open service URL using a fetch request.
 
 On the open service end, convert the base64 string back to a file and pass it as an argument to the workbook `Open` method. The open service will process the file and return the spreadsheet data in JSON format. You will then receive this JSON data in the fetch success callback. Finally, use the `openFromJson` method to load this JSON data into the spreadsheet component.
@@ -614,6 +616,8 @@ You can find the server endpoint code to save the spreadsheet data as an Excel f
 
 Before proceeding with the save process, you should deploy the spreadsheet open/save web API service in AWS Lambda. To host the open/save web service in the AWS Lambda environment, please refer to the following KB documentation.
 
+[How to deploy a spreadsheet open and save web API service to AWS Lambda](https://support.syncfusion.com/kb/article/17184/how-to-deploy-a-spreadsheet-open-and-save-web-api-service-to-aws-lambda)
+
 After deployment, you will get the AWS service URL for the open and save actions. Before saving the Excel file with this hosted save URL, you need to prevent the default save action to avoid getting a corrupted excel file on the client end. The save service returns the file stream as a result to the client, which can cause the file to become corrupted. To prevent this, set the `args.cancel` value to `true` in the [`beforeSave`](https://help.syncfusion.com/cr/aspnetcore-js2/Syncfusion.EJ2.Spreadsheet.Spreadsheet.html#Syncfusion_EJ2_Spreadsheet_Spreadsheet_BeforeSave) event. After that, convert the spreadsheet data into JSON format using the `saveAsJson` method in the `beforeSave` event and send it to the save service endpoint URL using a fetch request.
 
 On the server side, the save service will take the received JSON data, pass it to the workbook `Save` method, and return the result as a base64 string. The fetch success callback will receive the Excel file in base64 string format on the client side. Finally, you can then convert the base64 string back to a file on the client end to obtain a non-corrupted Excel file.