How to Download all files From GridView On Single Click Of Button...?

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please help me in my project i have some image files,video files.these files are shown in gridview and these file path and name is stored in database. one button called "Download All". When user clicks on this button these file should go in zip folder and download these folder in to his system. just like we download some application then it shows zip folder and it contains files.

Posted 29-Jun-12 2:21am

Vaishali P. Patil

Updated 29-Jun-12 20:39pm

v6

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Tim Corey 29-Jun-12 8:27am

Glad to hear it. So what is the issue? What have you tried? Where are you stuck (saying "I'm stuck on how to do this" doesn't count)?

_Tushar Patil 29-Jun-12 8:39am

Be Specific When Asking Question.....!

AmitGajjar 29-Jun-12 8:41am

so what is the problem ???? you are not able to download files ? what error ? what is the error message ? or let us know about your confusion... otherwise we will get confused :D

Vaishali P. Patil 29-Jun-12 8:46am

if suppose i have one movie's all song and bellow is the link download all above then how can we do this functionality

Vaishali P. Patil 29-Jun-12 8:52am

i am trying bellow code
if (ds.Tables[0].Rows.Count > 0)
{
// Create the ZIP file that will be downloaded. Need to name the file something unique ...
string strNow = String.Format("{0:MMM-dd-yyyy_hh-mm-ss}", System.DateTime.Now);
ZipOutputStream zipOS = new ZipOutputStream(File.Create(Server.MapPath("1/") + strNow + ".zip"));
zipOS.SetLevel(5); // ranges 0 to 9 ... 0 = no compression : 9 = max compression

// Loop through the dataset to fill the zip file
foreach (DataRow dr in ds.Tables[0].Rows)
{

ZipEntry zipEntry = new ZipEntry(dr["filename"].ToString());
zipOS.PutNextEntry(zipEntry);

}

zipOS.Finish();
zipOS.Close();

FileInfo file = new FileInfo(Server.MapPath("1/") + strNow + ".zip");
if (file.Exists)
{
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
Response.AddHeader("Content-Length", file.Length.ToString());
Response.ContentType = "application/zip";
Response.WriteFile(file.FullName);
Response.Flush();
file.Delete();
Response.End();
}
}

but it only creates zip folder

AmitGajjar 29-Jun-12 9:02am

check my answer. i have post a link, that may help you.

2 solutions

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_Tushar Patil · Answer 1 · 2012-06-29T02:49:00

Solution 1

Hi Vaishali,

Refer Following Link

http://highoncoding.com/Articles/597_Downloading_Multiple_Files_as_a_Zip_File_Using_GridView_and_SharpZipLib.aspx[^]

Posted 29-Jun-12 2:49am

_Tushar Patil

Comments

Vaishali P. Patil 29-Jun-12 9:10am

thanks.i used your code as

if (ds.Tables[0].Rows.Count > 0)
{

byte[] buffer = new byte[4096];

// the path on the server where the temp file will be created!
string tempFileName = Server.MapPath(@"1/" + Guid.NewGuid().ToString() + ".zip");

ZipOutputStream zipOutputStream = new ZipOutputStream(File.Create(tempFileName));
string filePath = String.Empty;
string fileName = String.Empty;
int readBytes = 0;

foreach (DataRow dr in ds.Tables[0].Rows)
{
//var isChecked = (row.FindControl("chkSelect") as CheckBox).Checked;
//if (!isChecked) continue;
filePath = Convert.ToString(dr["EvidencePath"]);
//filePath = (row.FindControl("lblFilePath") as Label).Text;
//fileName = (row.FindControl("lblFileName") as Label).Text;
fileName = Convert.ToString(dr["FilesName"]);

ZipEntry zipEntry = new ZipEntry(fileName);

zipOutputStream.PutNextEntry(zipEntry);

using (File fs = File.OpenRead(filePath))
{
do
{
readBytes = fs.Read(buffer, 0, buffer.Length);
zipOutputStream.Write(buffer, 0, readBytes);

} while (readBytes > 0);
}
}

if (zipOutputStream.Length == 0)
{
//lblMessage.Text = "Please select at least one file!";
return;
}

zipOutputStream.Finish();
zipOutputStream.Close();

Response.ContentType = "application/x-zip-compressed";
Response.AppendHeader("Content-Disposition", "attachment; filename=YourFile.zip");
Response.WriteFile(tempFileName);

Response.Flush();
Response.Close();

// delete the temp file
if (File.Exists(tempFileName))
File.Delete(tempFileName);
//}

}

it shows me error: Cannot declare a variable of static type 'System.IO.File'

**AmitGajjar** · Answer 2 · 2012-06-29T03:01:00

Solution 2

Hi,

check this[^] link,

this may help you

thanks
-Amit.

Posted 29-Jun-12 3:01am

AmitGajjar