Working with GridJs Server Side

Working with GridJs Server Side

1. add service in ConfigureServices in startup.cs

   services.AddScoped<IGridJsService, GridJsService>();

2. Set the Path to Store Cache Files

You can choose any of the following ways:

Option 1: Set GridJsOptions in ConfigureServices in Startup.cs

   services.Configure<GridJsOptions>(options =>
	{
		options.FileCacheDirectory = TestConfig.TempDir;
	});

Option 2: Directly Set the Static Property

   Config.FileCacheDirectory = TestConfig.TempDir;

Option 3: Define Your Own Cache Storage Rule by Implementing GridCacheForStream

For local file storage ,here is an example:

  public class LocalFileCache  : GridCacheForStream
    {
        public LocalFileCache()
        {
            string streampath = Path.Combine(Config.FileCacheDirectory, "streamcache");
            if (!Directory.Exists(streampath))
            {
                //create cache directory if not exists
                Directory.CreateDirectory(streampath);
               
            }
        }
        /// <summary>
        /// Implement this method to savecache,save the stream to the cache object with the key id.
        /// </summary>
        /// <param name="s">the source stream </param>
        /// <param name="uid">he key id.</param>
        public override void SaveStream(Stream s, String uid)
        {
            String filepath = Path.Combine(Config.FileCacheDirectory + Path.DirectorySeparatorChar + "streamcache", uid.Replace('/', '.'));
            using (FileStream fs = new FileStream(filepath, FileMode.Create))
            {
                s.Position = 0;
                s.CopyTo(fs);
            }

        }

        /// <summary>
        /// Implement this method to loadcache with the key uid,return the stream from the cache object.
        /// </summary>
        /// <param name="uid">the key id</param>
        /// <returns>the stream from  the cache</returns>
        public override Stream LoadStream(String uid)
        {
            String filepath = Path.Combine(Config.FileCacheDirectory + Path.DirectorySeparatorChar + "streamcache", uid.Replace('/', '.'));
            FileStream fs = new FileStream(filepath, FileMode.Open);
            return fs;
        }
        /// <summary>
        ///  implement the url in action controller  to get the file
        /// </summary>
        /// <param name="uid">the key id</param>
        /// <returns></returns>
        public override String GetFileUrl(string uid)
        {
            return "/GridJs2/GetFile?id=" + uid;
        }

    }

For server-side storage,we also provide an example.Please check:

https://github.com/aspose-cells/Aspose.Cells.Grid-for-.NET/blob/master/Examples_GridJs/Models/AwsCache.cs

For more details about storage, please refer to this guide

3. Implement Controller Actions

1. Create a Controller that Extends GridJsControllerBase

public class GridJs2Controller : GridJsControllerBase

2 Get JSON in action

There are two ways to get JSON data in your action:

Option 1: Using GridJsWorkbook

GridJsWorkbook wbj = new GridJsWorkbook();
Workbook wb = new Workbook(fullFilePath); 
wbj.ImportExcelFile(wb);
String ret =wbj.ExportToJson(fileName);

Option 2: Using IGridJsService in GridJsControllerBase

 String uid= GridJsWorkbook.GetUidForFile(fileName)
 StringBuilder ret= _gridJsService.DetailFileJsonWithUid(fullFilePath, uid);

For detail info ,you can check the example here: https://github.com/aspose-cells/Aspose.Cells.Grid-for-.NET/tree/master/Examples_GridJs