help with 'given path's format is not supported'

I have 5 HtmlInputControls on my webform allowing the user to upload 0-5 documents. I want the Upload button to upload the documents BUT NOT SAVE them yet. I don't want the SaveAs method to run until final submit of the form. So I have two methods to handle this. The second method, SaveFile( ), is not working. I get error message: The given path's format is not supported. I'm brand new to asp.net and don't have a great grasp of the different classes involved with the FileUpload so I'm not sure if I'm using them correctly. Would appreciated someone looking over my two methods.

 

protected void UploadBtn_Click(object sender, EventArgs e)
    {   //this method called when user clicks the Upload button of the HtmlFileInput control this method works fine
       
        /* get the files that are in the uploaded collection. If there are 5 HtmlInputControls, does this mean
         that the collection consists of 5 object files?  Or does the collection only consist of the HtmlInputControls
        that were actually used by the user? The collection exists as long as the page exists.*/

        HttpFileCollection uploadFiles = Request.Files;
             
        //for however many files are in the collection...
        for (int i = 0; i < uploadFiles.Count; i++)
        {
            // get the individual file from the files we got in the upload collection
            HttpPostedFile file = uploadFiles[i];
           
            //get the filename of the uploaded file
            string fileName = Path.GetFileName(file.FileName);

            /* if the filename isn't empty  - is this necessary because the collection consists of 5 items and
            we are checking which HtmlInputControls were actually used? */
            if(fileName.Trim() != "" )
            {
                try
                {  
                    //method to display the filename to the page for the user to see
                    ShowMessage(fileName, i);                                   
                }
                catch (Exception ex)
                {
                    //show the error message in the label
                    this.ShowMessage(" " + ex.Message, i);
                }
            }
        }
    }





    protected bool SaveFiles()
    { //this method called on final submit of the web form. It is NOT working
      bool successful = true;
      
      // for evey one of the files in the HttpFileCollect (gotten in the BtnUpload_click method
        for (int i = 0; i < Request.Files.Count; i++)
        {
            // create a handler to use for reference as we iterate through the files
            HttpPostedFile file = Request.Files[i];
           
            //get the file name and set to a local variable to use in either section of try block
            string filename = Path.GetFileName(file.FileName).Trim();

            //I WONDER IF I NEED A CONDITIONAL HERE TO CHECK IF file ! = null
            //if(file != null) //didn't make any difference
            try
            {        
               // append a datetime stamp to the file name and save the file in the Uploads folder
               file.SaveAs(Server.MapPath("~/Uploads/") + filename + Convert.ToString(System.DateTime.Now));              
            }
            catch (Exception ex)
            {
               // Response.Write(filename + "<br />"); //doesn't work
               // this.ShowMessage(ex.Message, i); //error: The given path's format is not supported. 
                this.ShowMessage(filename, i);  //doesn't work
                successful = false;
            }
        }
      return false;       
    }
 

0
run4it
3/28/2007 8:48:50 PM
asp.net.web-forms 93655 articles. 3 followers. Follow

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I think it's this line:   Convert.ToString(System.DateTime.Now));              

The time is being included which includes colons (12:34:56) which are illegal in a path name.

You could try:  System.DateTime.Now.ToString("yyyyMMdd");

 


Steve Wellens

My blog
1
SGWellens
3/28/2007 10:17:58 PM

I had already realized that my concatenation was wrong because it would have done this:

filename.docdatetimehere  when what I wanted was filenamedatetimehere.doc.

Still have same problem.  after 2 days on these file uploads, I've decided to not present the user with an Upload button and just handle the upload and saveas on the final submit. 

 

0
run4it
3/28/2007 10:35:30 PM
You do realize that the files will be uploaded regardless of what button was pressed? Even though you discrad them server side they are still uploaded to the server
0
mfeingold
3/28/2007 10:41:21 PM
Reply:

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