ASP.NET File Uploader with Overwrite Message

<?xml version="1.0"?>

<configuration>
  
    <appSettings>
      <!-- Set to "no" if return value excludes root path -->
      <add key="ReturnFullPath" value="no" />
      
      <!-- leave blank for app directory.  Set value to "../" for up one dir 
            if application is loaded in a virtual sub directory -->
      <add key="SetRootDirectory" value="" /> 
      
      <!-- Set directory defaults here.  Defaults overwritten by form
          requests from calling form javascript function -->
      <add key="DraftDirectory" value="pending" />
      <add key="UploadDirectory" value="downloads" />
      <add key="ArchiveDirectory" value="archive" />

      <!-- Set allowed file types here -->
      <add key="FileTypes" value=".pdf,.txt,.doc,.rtf,.xls,.html,.htm,.xml,.jpg,.jpeg" />
    </appSettings>
  
    <connectionStrings/>
  
    <system.web>
        <!-- 
            Set compilation debug="true" to insert debugging 
            symbols into the compiled page. Because this 
            affects performance, set this value to true only 
            during development.

            Visual Basic options:
            Set strict="true" to disallow all data type conversions 
            where data loss can occur. 
            Set explicit="true" to force declaration of all variables.
        -->
      <httpRuntime
         maxRequestLength="102400"
         requestLengthDiskThreshold="100" />
      
      <compilation debug="true" strict="false" explicit="true">
			    <assemblies>
				    <add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            <add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
            <add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
          </assemblies>
        </compilation>
        <pages>
            <namespaces>
                <clear/>
                <add namespace="System"/>
                <add namespace="System.Collections"/>
                <add namespace="System.Collections.Specialized"/>
                <add namespace="System.Configuration"/>
                <add namespace="System.Text"/>
                <add namespace="System.Text.RegularExpressions"/>
                <add namespace="System.Web"/>
                <add namespace="System.Web.Caching"/>
                <add namespace="System.Web.SessionState"/>
                <add namespace="System.Web.Security"/>
                <add namespace="System.Web.Profile"/>
                <add namespace="System.Web.UI"/>
                <add namespace="System.Web.UI.WebControls"/>
                <add namespace="System.Web.UI.WebControls.WebParts"/>
                <add namespace="System.Web.UI.HtmlControls"/>
            </namespaces>
        </pages>
        <!--
            The <authentication> section enables configuration 
            of the security authentication mode used by 
            ASP.NET to identify an incoming user. 
        -->
        <authentication mode="Windows"/>
        <!--
            The <customErrors> section enables configuration 
            of what to do if/when an unhandled error occurs 
            during the execution of a request. Specifically, 
            it enables developers to configure html error pages 
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
         -->
      <httpHandlers>
        <remove verb="*" path="*.asmx"/>
        <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
        <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
        <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
      </httpHandlers>

      <httpModules>
        <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
      </httpModules>
      
    </system.web>


  
</configuration>