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POOpen PDF in default viewer from DataGrid
 

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  1. POOpen PDF in default viewer from DataGrid
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    <p>I have a grid that displays a name &amp; link to all of the pdf files in a folder. The link opens the file in the browser.</p> <p>This is not ideal because the browser caches the files, so if a document is moved or changed, the old cached version is still accessible.</p> <p>Would it be possible to have the link open the file in the default installed pdf viewer and avoid caching completely?</p> <p>Here is my Grid code:</p> <pre><code>&lt;form runat="server"&gt; Search for a file: &lt;asp:TextBox ID="txtFilter" runat="server"&gt;&lt;/asp:TextBox&gt; &lt;asp:Button ID="btnShow" runat="server" Text="Display" onclick="btnShow_Click" /&gt; &lt;/form&gt; &lt;asp:DataGrid runat="server" id="FileList" Font-Name="Verdana" CellPadding="5" AutoGenerateColumns="False" AlternatingItemStyle-BackColor="#eeeeee" HeaderStyle-BackColor="Navy" HeaderStyle-ForeColor="White" HeaderStyle-Font-Size="15pt" HeaderStyle-Font-Bold="True"&gt; &lt;Columns&gt; &lt;asp:HyperLinkColumn DataNavigateUrlField="Name" DataTextField="Name" HeaderText="File Name" target="_blank"/&gt; &lt;asp:BoundColumn DataField="LastWriteTime" HeaderText="Last Write Time" ItemStyle-HorizontalAlign="Center" DataFormatString="{0:d}" /&gt; &lt;/Columns&gt; &lt;/asp:DataGrid&gt; </code></pre> <p>CS:</p> <pre><code>protected void btnShow_Click(object sender, EventArgs e) { ShowData(); } public void ShowData() { DirectoryInfo dirInfo = new DirectoryInfo(Server.MapPath("")); FileInfo[] info = dirInfo.GetFiles("*.pdf"); //Get FileInfo and Save it a FileInfo[] Array List&lt;Getfiles&gt; _items = new List&lt;Getfiles&gt;(); // Define a List with Two coloums foreach (FileInfo file in info) //Loop the FileInfo[] Array _items.Add(new Getfiles { Name = file.Name, LastWriteTime = file.LastWriteTime.ToString("MM/dd/yyyy") }); // Save the Name and LastwriteTime to List var tlistFiltered1 = _items.Where(item =&gt; item.Name.Contains(txtFilter.Text)); // Find the file that Contains Specific word in its File Name FileList.DataSource = tlistFiltered1; //Assign the DataSource to DataGrid FileList.DataBind(); } public class Getfiles { public string Name { get; set; } public string LastWriteTime { get; set; } } </code></pre>
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    1. COMy default pdf viewer is Google Chrome... so for me it might not work either way. Maybe you can somehow disable caching for your pdfs at webserver level instead?
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      1. USnvoigt
    2. CO@nvoigt Can that be done? Wouldn't my browser still cache even if you made a server level change? I use Chrome as well.
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      1. USJack
 

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