upload file with size limit 1 mb else flash message that size more than 1 mb[Answered] RSS

• • Reply
  mike4u

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  upload file with size limit 1 mb else flash message that size more than 1 mb

  Sep 01, 2016 10:53 AM|mike4u|LINK

  string image1 = null;
                  if (fileUpload1.HasFile)
                  {
                      image1 = fileUpload1.FileName;
                      string[] ValidFileExtensions = new string[] { ".pdf", ".doc", ".docx" };
                      fi1 = new FileInfo(fileUpload1.FileName);
                      ext1 = fi1.Extension;
                      // loop over the array of valid file extensions to compare them with uploaded file
                      foreach (string extension in ValidFileExtensions)
                      {
                          if (ext1 == extension)
                          {
                              flag1 = true;
                          }
                      }
                  }
                  else
                  {
                      image1 = "nofile.pdf";
                      flag1 = true;
                      ext1 = ".pdf";
                  }

  masters I have to upload 1 mb file. but at user end if user try to upload more than 1 mb file then 1 message should be displayed that size is more 1 mb.

  with above code how to do it.

• • Reply
  mike4u

  Contributor

  2564 Points

  1919 Posts

  Re: upload file with size limit 1 mb else flash message that size more than 1 mb

  Sep 01, 2016 11:10 AM|mike4u|LINK

   string image1 = null;
                  if (fileUpload1.HasFile)
                  {
                      int fileSize = fileUpload1.PostedFile.ContentLength;
                       if (fileSize < 2100000)
                       {
                      
  
                          image1 = fileUpload1.FileName;
                          string[] ValidFileExtensions = new string[] { ".pdf", ".doc", ".docx" };
                          fi1 = new FileInfo(fileUpload1.FileName);
                          ext1 = fi1.Extension;
                          // loop over the array of valid file extensions to compare them with uploaded file
                          foreach (string extension in ValidFileExtensions)
                          {
                              if (ext1 == extension)
                              {
                                  flag1 = true;
                              }
                          }
                      }
                      else
                      {
                          // Notify the user why their file was not uploaded.
                          ClientScript.RegisterStartupScript(this.GetType(), "Alert", string.Format("alert('file size is more than 1 MB');"), true);
                      }

  i tried  above code but  getting error web page not available.

• • Reply
  jimmy69

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  2195 Points

  950 Posts

  Re: upload file with size limit 1 mb else flash message that size more than 1 mb

  Sep 01, 2016 11:47 AM|jimmy69|LINK

  Hello,

  why you don't check the file size in javascript ?

  var oFile = document.getElementById("fileUpload").files[0]; 
  
  //2 mega it's enough i think
              if (oFile.size > 2097152)
              {
                  alert("THE FILE SELECTED IS TOO GROWTH ...");
                  return;
              }

  hope this help

  Thanks for your time and your knowledge that's great to find any help here ..
• • Reply
  Brando ZWZ

  Star

  9831 Points

  3120 Posts

  Re: upload file with size limit 1 mb else flash message that size more than 1 mb

  Sep 02, 2016 05:34 AM|Brando ZWZ|LINK

  Hi mike4u,

  mike4u

  i tried  above code but  getting error web page not available.

  According to your description, I couldn’t find why you get the error web page not available error.

  Could you please post more codes about your HTML and upload file event codes?

  If you could post more relevant codes, It will be more easily for us to reproduce your problem.

  Besides, if you want to check the file size before file upload, I suggest you could use CustomValidator control.

  More details, you could refer to follow codes and link:

  Html:

      <div>
      <asp:FileUpload ID="FileUpload1" runat="server" />
      <asp:Button ID="btnUpload" Text="Upload" runat="server" OnClick="btnUpload_Click" /><br />
      <asp:CustomValidator ID="CustomValidator1" OnServerValidate="ValidateFileSize" ForeColor="Red" runat="server" />
  </div>
  

  Code-behind:

    protected void ValidateFileSize(object sender, ServerValidateEventArgs e)
          {
              decimal size = Math.Round(((decimal)FileUpload1.PostedFile.ContentLength / (decimal)1024), 2);
              if (size > 1024)
              {
                  CustomValidator1.ErrorMessage = "File size must not exceed 1MB.";
                  e.IsValid = false;
              }  
          }
  
          protected void btnUpload_Click(object sender, EventArgs e)
          {
              String path = Server.MapPath("~/Images/");
              FileUpload1.SaveAs(path + FileUpload1.FileName);
                  }
  

  Link: How to: Validate with a Custom Function for ASP.NET Server Controls

  Best Regards,

  Brando

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