asked on

ERROR - System.UnauthorizedAccessException: Access to the path '...' is denied.

This is a Web App in c# ASP.NET.

The user selects some criteria, then displays a Crystal Reports Report on the same page. I include the ability to export to .txt (tab or comma separated). But, when I try to save the file, I get the following error:

System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Test\02112011.txt'.

(I'm sure you know but 'C:\Test\02112011.txt' is the file name on the local machine that I'm trying to save it to)

Someone had mentioned sending the file to the browser and making the user select a save location that way. How do I go about that? I want the page to still display the selection criteria and the Crystal Report.

Here's the code:

string ExportFile = "";
ExportFile = txtPath.Text.ToString();

float IsTxt = 0;
float Isfolder = 0;

IsTxt = ExportFile.IndexOf(".txt");
Isfolder = ExportFile.IndexOf(":\\");

if (IsTxt < 0)
{
ExportFile = ExportFile + ".txt";
}

if (Isfolder >= 0)
{
//go through with export
BindReport("true");
DiskFileDestinationOptions diskOpts = ExportOptions.CreateDiskFileDestinationOptions();
ExportOptions exportOpts = new ExportOptions();

exportOpts = report.ExportOptions;
if (rblExportType.SelectedValue.ToString() == "Tab")
{
exportOpts.ExportFormatType = ExportFormatType.TabSeperatedText;
}
else
{
exportOpts.ExportFormatType = ExportFormatType.CharacterSeparatedValues;
}

exportOpts.ExportDestinationType = ExportDestinationType.DiskFile;

diskOpts.DiskFileName = ExportFile;
exportOpts.ExportDestinationOptions = diskOpts;
report.Export(exportOpts);

RegisterStartupScript("startUpScript", "<script language=JavaScript>alert('Export Complete');</script>");
}
else
{
RegisterStartupScript("startUpScript", "<script language=JavaScript>alert('You Need to Select a .txt file');</script>");

Thank you

HainKurt

on which line do you get that error?

report.Export(exportOpts);

???

Mike McCracken

Does the TEST directory exist?

Does the user have WRITE permissions?

mlmcc

Mike McCracken

Since this is a WEB application the C: may be getting interpreted as the server C: drive.

mlmcc

DKFNJ

ASKER

I figured out the error. The problem is that I need to get the file to the client PC, not the server. How do I go about doing that?

Todd Gerbert

I have already addressed these issues in your other question, and also included C# examples that send the output of a Crystal Report to the browser as a PDF. See http:Q_26803432.html#a34834844 and http:Q_26803432.html#a34842836.

I recommend you direct the user's browser to a .ASHX page (an ASHX being a page that just runs code, no HTML, etc), that ASHX page can open the report and send it to the client as an attachment, which should cause the Open/Save/Cancel dialog to open and leave the current page being viewed as it is (or you can always just open the report in a new window).

Todd Gerbert

Here's an example ASHX that checks the query string for the Crystal Report to load, then sends it to the browser as a PDF attachment.

public class DownloadReport : IHttpHandler
{

	public void ProcessRequest(HttpContext context)
	{
		string reportPath = context.Request.QueryString["ReportPath"];

		ReportDocument reportDocument = new ReportDocument();
		reportDocument.Load(reportPath);
		reportDocument.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, true, "YourReport.pdf");
		context.Response.End();
	}

	public bool IsReusable
	{
		get
		{
			return false;
		}
	}

}

Open in new window

You would then direct your user's browser to http://www.yoursite.com/ShowReport.ashx?ReportPath=theReport.rpt, for example.

SOLUTION

HainKurt

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ASKER CERTIFIED SOLUTION

DKFNJ

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Todd Gerbert

It doesn't matter - the concept is the same, you need to send bytes to the client's browser, you can't save the content to the server's disk - whether it's a PDF, an Excel workbook, Word document, or CSV file.

If you're wanting to export the report as a CSV, then all you might need to do is change (in the snippet in http:#34888134) line 10 reportDocument.ExportToHttpResponse(ExportFormatType.CSV, Response, true, "YourReport.csv");

Besides, I also gave you an example that exports a CSV.

Todd Gerbert

I provided this answer over a week ago. See my comments in http:#a34888096.

Since this is a duplicate question I recommend delete without refund.

Otherwise, split points between http:#34888096 and http:#34888134

DKFNJ

ASKER

Actually, the answer to the other thread was more a "you cannot do this in web-based applications," which you did answer:

"You can't use those dialogs in a web app, they're form forms apps."

This question was about something different when it was opened. It was about why I was receiving an error. I was receiving the error because it was writing to the server, not the client and that folder only existed on the client.

Both threads did lean toward the same issue at the end.

I did give credit for answering the other question because it was the closest on that thread. But the person who I gave credit to here, answered along the lines of what I needed more. I apologize for the confusion.

As I had said, I'm new to this and I appreciate your help.

modus_operandi

Restarting auto-close process on DKFNJ's behalf.

modus_operandi
EE Admin