Saving a LaTeX formula image to a specific folder in Asp.net: Tips and tricks

I need assistance with using LaTeX to include formulas in my project. Below is the code I am using:

 EqEditor.embed('editor', '');
 var a = new EqTextArea('equation', 'testbox');
 EqEditor.add(a, false);
<link rel="stylesheet" type="text/css" href="http://latex.codecogs.com/css/equation-embed.css" />
<script type="text/javascript" src="http://latex.codecogs.com/js/eq_config.js"></script>

<div id="editor"></div>
<br />
<br />
<textarea id="testbox" rows="3" cols="40"></textarea>
<br />
<br />
<img id="equation" />

My issue now is that after creating a formula, when I click the submit button, I want the formula to be saved to a folder within my project under a specific name like "formula.png". Can someone please assist me with achieving this using either JavaScript or C#?

javascriptc#asp.netlatex

Answer №1

I stumbled upon a quick fix that involves using a URL to generate an image based on certain parameters.

For example, if you want to visually represent "A + B = C", you can create the image programmatically by following these steps:

  1. Encode the string as shown below: var k = encodeURI("a + b = c");. The value of k will be a%20+%20b%20=%20c.
  2. Insert k into 
    url = "http://latex.codecogs.com/gif.latex?" + k
    . This will result in 
    http://latex.codecogs.com/gif.latex?a%20+%20b%20=%20c
    .

  3. You can then save the image from the remote URL to your server using the code snippet below:

    using( System.Net.WebClient wc = new System.Net.WebClient())
{
    wc.DownloadFile("http://latex.codecogs.com/gif.latex?a%20+%20b%20=%20c", @"D:\a.gif"); // replace a.gif with the desired file path for saving on the server.
}

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