What is the most efficient method for transferring rows from an SQL Database to JavaScript?

Recently, I've been exploring the dynamic features of HTML5 IndexedDB controlled by Javascript and how to sync it with an SQL Server database for offline access.

The challenge I'm facing is determining the most efficient method to transfer data from an SQL Server to a browser's Javascript using C# as the intermediary. While there are various workarounds like storing data in labels and fetching it through document.getElementById("DataHere").value, I'm curious if there are better ways to accomplish this data transfer.

Presently, I've developed a method that creates an array of strings (in JSON format using JSON.Net) as a sample output from the database.


public string[] GenerateEmployeeSample() {
    List<Employee> listEmps = new List<Employee>();
    // Array initialization and employee information setup omitted for brevity

    return listJSON;
}

With this dataset ready, my concern lies in passing this array over to Javascript. Despite delving into numerous examples, none seemed to meet my requirements or worked correctly, leaving me slightly perplexed as Javascript is still a relatively new territory to navigate for me.

Thank you for your time!

Answer №1

For a more detailed approach, create a resource (such as an ASPX page or a JSON file) that can provide a JSON string upon request. You're already on the right track by having code to serialize objects into JSON format. One way to go about this is to have a page display the output of this function using

Response.Write(GenerateEmployeeSample());

Next, utilize the XMLHttpRequest object to fetch this resource and use JavaScript's JSON.parse method to convert the obtained JSON into a JavaScript object. From there, you can manipulate this object according to your needs.

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