A guide to accessing the value of a web.config appsetting key in a Type Script service class

I am currently working on an Angular 2 application in Visual Studio 2015. In my project, I need to retrieve the app setting value from web.config in a TypeScript file (service.ts).

Despite searching online and reading various resources, I have not been able to find a solution to this issue yet. One resource I consulted was this link:

If anyone has insight on how to resolve this problem, please share your knowledge.

Answer №1

When working with an xml file, you have the ability to perform actions like this:

        const filePath : string = path_to_your_file;
        let observableResponse: Observable<any>
            = this.http.get(filePath)
            .map(response => response.text())
            .subscribe((xmlData : any) => {
              let parser = new DOMParser();
              let parsedXml= parser.parseFromString(xmlData, 'text/xml');
              let nodes = parsedXml.getElementsByTagName('add');

              for (let index = 0; index < nodes.length; index++) {
                     parseProperty(nodes.item(index));
              }, ...)
         }

Answer №2

In TypeScript, it is not possible to directly access a web.config file. You must first write the settings into your html document using some type of ServerSide code. One method is to store the configuration in a hidden html text field or inside a javascript variable. Afterwards, you can retrieve this information from the text field or javascript variable in Typescript.

If you need more information on this topic, you can check out this previously answered question here: Reading web.config from JavaScript

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