Question

due to some unavoidable reasons I need to disable Google Chrome’s “Chrome PDF Viewer” and enable the adob PDF viewer. I want to do this from C#.net and asp.net Code. I know it is not possible directly as it is related to change setting’s on a client machine but I am ready to ask permission from user if s/he wants to disable the default viewer.

The reason behind this work is that all my PDFs created in iTextSharp are not functioning properly in Google Chrome due to Chrome’s default reader. Not all user’s can find and disable the plugin manually, hence I want it to be done by code. I need to know that how we can disable the default PDF viewer. AFter this my problem will be solved automatically. pls give me any suggestion about code

Answer 1

Google chrome plugins doesnot change the programming way so just inform to the client like a pop up message

<script type="text/javascript">
function CheckPlugin()
{
var is_chrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
function findPlugin(ext) {
var thisExt, findExt;
for (var n = 0; n < navigator.plugins.length; n++) {
//alert("n value"+ navigator.plugins.length);
for (var m = 0; m < navigator.plugins[n].length; m++) {
//alert("m length:"+navigator.plugins[n].length);
thisExt = navigator.plugins[n][m].description.toLowerCase();
// alert("this exten"+thisExt);
findExt = thisExt.substring(0, thisExt.indexOf(" "));
//alert("findexes"+findExt);
if (findExt == ext)
return (true);
}
}
return (false);
}

if (is_chrome ==true) {
//alert("chrome browser");
if (findPlugin("acrobat")) {
//alert("Adobe Acrobat pdf viewer");
return true;
}
else {

alert("please disable the chrome pdf viewer and enable the Adobe Acrobat PDF viewer \n Please follow the steps:\n 1.Open the new tab 'chrome://plugins/' type the Address. \n 2. Click the Enable link in 'Adobe Acrobat' field. \n 3. click the Disable link in 'Chrome PDF Viewer'. \n 4. Close the tab and you can open the PDf files in chrome browser.");
return false;
}
}
else {
//alert("not chrome");
}
}

</script>

In hyperlink write like this

<asp:HyperLink ID="HyperLink1" runat="server"
NavigateUrl="~/PDFFiles/AGENCY PROFILE APP.pdf" onclick="return CheckPlugin();">Agency profile app</asp:HyperLink>

I think it is more help full.