244 lines
8.2 KiB
Plaintext
244 lines
8.2 KiB
Plaintext
<%@ Page
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Language="C#"
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Debug="true"
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%>
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<%@ Import Namespace="System.Text" %>
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<%@ Import Namespace="System.IO" %>
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<%@ Import Namespace="Ionic.Zip" %>
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<%@ Import Namespace="System.Collections.Generic" %>
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<script language="C#" runat="server">
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// ZipExample.aspx
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//
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// This .aspx page demonstrates how to use the DotNetZip library from within ASP.NET.
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//
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// To run it,
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// 1. drop the Ionic.Zip.dll into the \bin directory of yoru asp.net app
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// 2. create a subdirectory called "fodder" in your web app directory.
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// 3. copy into that directory a variety of random files.
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// 4. insure your web.config is properly set up (See below)
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//
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//
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// notes:
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// This requies the .NET Framework 3.5 - because it uses the ListView control that is
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// new for ASP.NET in the .NET Framework v3.5.
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//
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// To use this control, you must add the new web controls. Also, you must use the v3.5 compiler.
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// Here's an example web.config that works with this aspx file:
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//
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// <configuration>
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// <system.web>
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// <trust level="Medium" />
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// <compilation defaultLanguage="c#" />
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// <pages>
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// <controls>
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// <add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
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// </controls>
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// </pages>
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// </system.web>
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// <system.codedom>
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// <compilers>
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// <compiler language="c#;cs;csharp"
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// extension=".cs"
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// warningLevel="4"
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// type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
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// <providerOption name="CompilerVersion" value="v3.5" />
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// <providerOption name="WarnAsError" value="false" />
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// </compiler>
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//
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// <compiler language="vb;vbs;visualbasic;vbscript"
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// extension=".vb"
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// warningLevel="4"
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// type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
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// <providerOption name="CompilerVersion" value="v3.5" />
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// <providerOption name="OptionInfer" value="false" />
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// <providerOption name="WarnAsError" value="false" />
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// </compiler>
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//
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// </system.codedom>
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// </configuration>
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//
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//
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public String width = "100%";
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public void Page_Load (Object sender, EventArgs e)
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{
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try
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{
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if ( !Page.IsPostBack ) {
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// populate the dropdownlist
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// must have a directory called "fodder" in the web app directory
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String sMappedPath= Server.MapPath("fodder");
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var fqFilenames= new List<String>(System.IO.Directory.GetFiles(sMappedPath));
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var filenames= fqFilenames.ConvertAll((s) => { return s.Replace(sMappedPath+"\\", ""); });
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ErrorMessage.InnerHtml = "";
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FileListView.DataSource = filenames;
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FileListView.DataBind();
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}
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}
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catch (Exception)
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{
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// Ignored
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}
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}
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public void btnGo_Click (Object sender, EventArgs e)
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{
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ErrorMessage.InnerHtml =""; // debugging only
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var filesToInclude= new System.Collections.Generic.List<String>();
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String sMappedPath= Server.MapPath("fodder");
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var source= FileListView.DataKeys as DataKeyArray ;
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foreach (var item in FileListView.Items)
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{
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CheckBox chkbox= item.FindControl("include") as CheckBox ;
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Label lbl= item.FindControl("label") as Label ;
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if (chkbox!=null && lbl != null)
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{
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if (chkbox.Checked)
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{
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ErrorMessage.InnerHtml += String.Format("adding file: {0}<br/>\n", lbl.Text);
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filesToInclude.Add(System.IO.Path.Combine(sMappedPath,lbl.Text));
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}
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}
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}
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if (filesToInclude.Count==0)
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{
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ErrorMessage.InnerHtml += "You did not select any files?<br/>\n";
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}
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else
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{
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Response.Clear();
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Response.BufferOutput= false;
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System.Web.HttpContext c= System.Web.HttpContext.Current;
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String ReadmeText= String.Format("README.TXT\n\nHello!\n\n" +
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"This is a zip file that was dynamically generated at {0}\n" +
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"by an ASP.NET Page running on the machine named '{1}'.\n" +
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"The server type is: {2}\n"+
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"The password used: '{3}'\n" +
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"Encryption: {4}\n",
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System.DateTime.Now.ToString("G"),
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System.Environment.MachineName,
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c.Request.ServerVariables["SERVER_SOFTWARE"],
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tbPassword.Text,
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(chkUseAes.Checked)?EncryptionAlgorithm.WinZipAes256.ToString() : "None"
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);
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string archiveName= String.Format("archive-{0}.zip", DateTime.Now.ToString("yyyy-MMM-dd-HHmmss"));
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Response.ContentType = "application/zip";
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Response.AddHeader("content-disposition", "inline; filename=\"" + archiveName + "\"");
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// In some cases, saving a zip directly to Response.OutputStream can
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// present problems for the unzipper, especially on Macintosh.
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// To workaround that, you can save to a MemoryStream, then copy to
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// the Response.OutputStream.
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using (var ms = new System.IO.MemoryStream())
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{
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using (ZipFile zip = new ZipFile())
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{
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// the Readme.txt file will not be password-protected.
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zip.AddEntry("Readme.txt", ReadmeText, Encoding.Default);
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if (!String.IsNullOrEmpty(tbPassword.Text))
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{
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zip.Password = tbPassword.Text;
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if (chkUseAes.Checked)
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zip.Encryption = EncryptionAlgorithm.WinZipAes256;
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}
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// filesToInclude is a string[] or List<String>
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zip.AddFiles(filesToInclude, "files");
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zip.Save(ms);
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}
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// copy the memory stream to the Response.OutputStream
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ms.Position = 0;
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var b = new byte[1024];
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int n;
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while ((n = ms.Read(b,0,b.Length)) > 0)
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Response.OutputStream.Write(b,0,n);
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}
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Response.Close();
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}
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}
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</script>
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<html>
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<head>
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<link rel="stylesheet" href="style/basic.css">
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</head>
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<body>
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<form id="Form" runat="server">
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<h3> <span id="Title" runat="server" />Zip Files from ASP.NET </h3>
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<p>This page uses the .NET Zip library (see <a
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href="http:///DotNetZip.codeplex.com">http://DotNetZip.codeplex.com</a>)
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to dynamically create a zip archive, and then download it to the
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browser through Response.OutputStream, via a MemoryStream. This page is implemented in C#.</p>
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<span class="SampleTitle"><b>Check the boxes to select the files, set a password if you like,
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then click the button to zip them up.</b></span>
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<br/>
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<br/>
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Password: <asp:TextBox id="tbPassword" Password='true' Text="" AutoPostBack runat="server"/>
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<span style="color:Red">(Optional)</span>
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<br/>
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<br/>
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Use AES?: <asp:CheckBox id="chkUseAes" AutoPostBack runat="server"/>
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<br/>
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<br/>
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<asp:Button id="btnGo" Text="Zip checked files" AutoPostBack OnClick="btnGo_Click" runat="server"/>
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<br/>
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<br/>
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<span style="color:red" id="ErrorMessage" runat="server"/>
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<br/>
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<asp:ListView ID="FileListView" runat="server">
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<LayoutTemplate>
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<table>
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<tr ID="itemPlaceholder" runat="server" />
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</table>
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</LayoutTemplate>
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<ItemTemplate>
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<tr>
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<td><asp:Checkbox ID="include" runat="server"/></td>
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<td><asp:Label id="label" runat="server" Text="<%# Container.DataItem %>" /></td>
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</tr>
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</ItemTemplate>
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<EmptyDataTemplate>
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<div>Nothing to see here...</div>
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</EmptyDataTemplate>
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</asp:ListView>
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</form>
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</body>
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</html>
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