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POCreating an event for a textbox and AJAX Update Panel Control
 

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  1. POCreating an event for a textbox and AJAX Update Panel Control
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    <p>I wanted to create a "Click" event for a textbox in C# (as there isn't any).</p> <p>So, this way </p> <pre><code>protected void Page_Load(object sender, EventArgs e) { if (Request["__EVENTARGUMENT"] != null &amp;&amp; Request["__EVENTARGUMENT"] == "txt1OnClick") { txt1_Click(); } txt1.Attributes.Add("onclick", this.Page.ClientScript.GetPostBackEventReference(txt1, "txt1OnClick")); } private void txt1_Click() { ImageMap1.ImageUrl = "guide/1.jpg"; } </code></pre> <p>Then I wanted to load the image without reloading the page. </p> <p>So I used the AJAX UpdatePanel Control and this worked fine with </p> <pre><code>protected void Button1_Click(object sender, EventArgs e) { ImageMap1.ImageUrl = "guide/1.jpg"; } </code></pre> <p>But not with the event I created, because the compiler doesn't identify my new events as a real event or something I couldn't figure out.</p> <p>I added the button1_click event according to Step 8 of "<a href="http://msdn.microsoft.com/en-us/library/bb399001.aspx" rel="nofollow noreferrer">Refreshing an UpdatePanel Control with an External Button</a>".</p> <p>The click event of textbox is not shown in this option:</p> <p><img src="https://i.stack.imgur.com/dhows.png" alt="textbox"></p> <p>So my question is is there any way to add this event within <code>System.Web.UI.WebControls.TextBox</code> class or, to make this event visible within the above option?</p> <p>So that I can include click event of the textbox within the Triggers of the update panel. </p>
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    1. USJason Sturges
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