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POCalling jQuery's .ajax() from an eventHandler in c# Asp.Net
 

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  1. POCalling jQuery's .ajax() from an eventHandler in c# Asp.Net
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    <p>In the code behind (<code>upload.aspx</code>) I have an event that returns the number of bytes being streamed; and as I debug it, it works fine. I wanted to reflect the numbers returned from the event-handler on a progress bar and this is where I got lost. I tried using jQuery's .ajax() function. this is how I implemented it:</p> <p>In the EventHandler in my code behind I added this code to call the .ajax() function: </p> <pre><code>Page.ClientScript.RegisterStartupScript(this.GetType(), "UpdateProgress", "&lt;script type='text/javascript'&gt;updateProgress();&lt;/script&gt;"); </code></pre> <p>My plan is whenever the eventHandler function changes the values of bytes being streamed it calls the javascript function "updateProgress()" </p> <p>The .ajax() function "UpdateProgress()" is as:</p> <pre><code>function updateProgress() { $.ajax({ type: "POST", url: "upload.aspx/GetData", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", async: true, success: function (msg) { $("#progressbar").progressbar("option", "value", msg.d); } }); } </code></pre> <p>I made sure that the function GetData() is [System.Web.Services.WebMethod] and that it is static as well. so the workflow of what I am trying to implement is as: - Click On Upload button - The Behind code starts executing and EventHandler triggers - The EventHandler calls .ajax() function - The .ajax() function retrieves the bytes being streamed and updates progress bar.</p> <p>When I ran the code; all runs well except that the .ajax() is only executed when upload is finished (and progress bar also updates only when finished upload); even though I call .ajax() function every time in the eventHandler function as reflected above...</p> <p>What am I doing wrong? Am I thinking of this right? is there anything else I should add maybe an updatePanel or something? </p>
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    1. USPaul Phillips
    1. USibininja
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      1. POCalling jQuery's .ajax() from an eventHandler in c# Asp.Net
      1. USDevraj Gadhavi
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    1. COWhat does `upload.aspx/GetData` returns?
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      1. POCalling jQuery's .ajax() from an eventHandler in c# Asp.Net
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    2. COIt return an int; it is as: [System.Web.Services.WebMethod] public static int GetData() { return Convert.ToInt32(byteStreamed); }
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      1. POCalling jQuery's .ajax() from an eventHandler in c# Asp.Net
      1. USibininja
    3. COhave you set the default value of the progress bar to zero at the beginning? Like this `$("#progressbar").progressbar({ value: 0 });`
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