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POPrevent a LinkButton inside ItemTemplate from postback and execute a javascript function using Evaluated val as parameter
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  1. POPrevent a LinkButton inside ItemTemplate from postback and execute a javascript function using Evaluated val as parameter
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    copied!<p>I dont know why this is giving me such a hard time, may be coding all day long has finally made my head smoke. I am trying to call a js function on client click of a link button inside an item template. I am using the Eval method to pass one of the parameters to my js function and prevent postback. However, it postbacks and never calls my function. If i take the evaluated parameter it works. </p> <pre><code> &lt;Columns&gt; &lt;asp:BoundField DataField="media_id" Visible="false" HeaderText="" /&gt; &lt;asp:BoundField DataField="dir_path" Visible="false" HeaderText="" /&gt; &lt;asp:TemplateField HeaderText="Date Taken"&gt; &lt;ItemTemplate&gt; &lt;asp:LinkButton ID="dateLinkCsBtn" OnClientClick='&lt;%#Eval("dir_path","javascript:return test({0},event);")%&gt;' CommandArgument='&lt;%#Eval("dir_path") %&gt;' runat="server" Text='&lt;%# Bind("date") %&gt;'&gt;&lt;/asp:LinkButton&gt; &lt;/ItemTemplate&gt; &lt;/asp:TemplateField&gt; &lt;asp:BoundField DataField="description" Visible="true" HeaderText="Media Type" /&gt; &lt;/Columns&gt; </code></pre> <p>and this is the js function: </p> <pre><code>&lt;script&gt; function test(dir_path,event) { alert(dir_path); event.preventDefault(); }; &lt;/script&gt; </code></pre> <p>UPDATE : Replacing OnClientClick from </p> <pre><code>OnClientClick='&lt;%#Eval("dir_path","javascript:return test({0},event);")%&gt;' </code></pre> <p>to : </p> <pre><code>OnClientClick='&lt;%#Eval("dir_path","Javascript:return test(\"{0}\",event);")%&gt;' </code></pre> <p>Works but the output produced ignores all '\' and returns :<br> <code>C:KBlog_MediaColorSnapshota4dde1-76fc-4e2e-9100-f12f48427e24.png</code> instead of </p> <pre><code>C:\KBlog_Media\1\ColorSnapshot\00a4dde1-76fc-4e2e-9100-f12f48427e24.png </code></pre> <p>SOLUTION: Update the datasource datatable of the gridview to display double backslash for dir_path "\" instead of single backslash. It worked like a charm </p>
 

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