Hi,

I got some code off this page:

http://www.aspnettutorials.com/tutorials/network/net-fileupload-aspnet2-csharp.aspx

to allow a user to upload a file from a web page using the FileUpload control in ASP.NET.

Here's the code:

            if (this.uplLogo.HasFile)
            {
                string filepath = this.uplLogo.PostedFile.FileName;
                string pat = @"\\(?:.+)\\(.+)\.(.+)";
                Regex r = new Regex(pat);
                //run
                Match m = r.Match(filepath);
                string file_ext = m.Groups[2].Captures[0].ToString();
                string filename = m.Groups[1].Captures[0].ToString();
                string file = filename + "." + file_ext;

                //save the file to the server 
                this.uplLogo.PostedFile.SaveAs(Server.MapPath(".\\") + file);
                
                //lblStatus.Text = "File Saved to: " + Server.MapPath(".\\") + file; if (Session["LogoFile"] != null)
                oAppSettings.LogoFile = file;
            }

I am getting an error at this line:

string file_ext = m.Groups[2].Captures[0].ToString();

and the error is:

System.ArgumentOutOfRangeException was unhandled by user code
Message="Specified argument was out of the range of valid values.\r\nParameter name: i"
Source="System"
ParamName="i"
StackTrace:
at System.Text.RegularExpressions.CaptureCollection.GetCapture(Int32 i)
at System.Text.RegularExpressions.CaptureCollection.get_Item(Int32 i)
at SamaanSystems.IAS.Web.SettingsManager.btnSave_Click(Object sender, EventArgs e) in C:\Development\Mere Mortals .NET Framework 2008\SamaanSystems\IAS.Web\Admin\SettingsManager.aspx.cs:line 51
at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException:

I am guessing that m.Groups[2] does not exist, but this is my first time using regular expressions. The file I am trying to upload is this:

"C:\Documents\Arrive Alive\images\AALogo.jpg"

Any idea what I need to do to fix this?