OpenFileDialog By: Pall Bjornsson Categories: Common Dialogs

Tags: Architects, Developers, Windows & Dialogs, 1. Beginner, 2. Intermediate, 3. Advanced, Pre v6.3, v6.3, v6.4 and Later Revision: 1 Posted: 11/July/2009 Updated: 07/Dec/2010 Status: Publish Types: Reference

Overview

The OpenFileDialog control is functionally equivialent to the Windows Forms OpenFileDialog control.

Availability

The OpenFileDialog is one of the Out of the Box standard controls, which means it is free and available in all Visual WebGui versions.

Samples of use

• Upload single File and find out "real" Filename
  

• Getting filename of uploaded files

SDK Version highlights

• Flash 10 does not work for Visual WebGui versions prior to 6.4.0P2

See also

• SWFUpload - the tool used behind the scenes in this control

RererencesCode samples

• Save uploaded files to a specific folder

Forum discussions

• Downloading huge files - timeout issues
• Downloading huge files - might exceed the maxAllowedContentLength
  
• More on downloading huge files
• Maximum file size affected both by OpenFileDialog.MaxFileSize and web.config setting of maxRequestLength - ASP.NET defaults to 4Mb
• Resolving NullReferenceException in OpenFileDialog by Removing Role Services on IIS
• Different ways to get to the filenames uploaded
• OpenFileDialog set to use Flash mode will fallback to DHTML if Flash not available on client
• Upload File Destination Folder
• OpenFileDialog and multiuser file conflicts concerns
• OpenFileDialog does not support passing user credentials when in Flash more - Use DHTML mode when authentication is required (issue here)
• ContentType of uploaded files is always "application/octet-stream" when using flash, but correct when using non-flash - workaround suggestion
• Using Flash uploads, you can't get the client path of the uploaded file

Other references

• MSDN Windows Forms OpenFileDialog documenation
• MSDN web.config httpRuntime element settings
• Easy Uploads in ASP.NET
• Uploading files in ASP.NET 2.0
• Adjust maxRequestEntityAllowed in IIS7 uploading huge files
• Adjust requestLimits on IIS7 with filtering active
• Adjusting maxAllowedContentLength in IIS6 (using URLSCAN) for huge file uploads
• Adjusting request limits might be forbidden at hosted sites and here
• Request limits in IIS
• NEATUPLOAD ASP.NET control
• jQuery File Upload plugin that requires flash and more
• Lots of info on setting headers for downloads
• Making sure download dialog appears as opposed to showing inline

About the author

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Form Concepts - Dialog forms Tags: Architects, Developers, Windows & Dialogs, C#, VB.NET, 1. Beginner, 2. Intermediate, 3. Advanced, Pre v6.3, v6.3, v6.4 and Later	04/Dec/2010    2010/12/04	Pall Bjornsson
OpenFileDialog CodeSample - Getting filename of uploaded files Tags: Developers, Windows & Dialogs, 1. Beginner, 2. Intermediate, Pre v6.3, v6.3, v6.4 and Later, 3. Advanced	31/Aug/2010    2010/08/31	Pall Bjornsson
OpenFileDialog CodeSample - Upload single File and find out real Filename Tags: Developers, Windows & Dialogs, 1. Beginner, 2. Intermediate, Pre v6.3, v6.3, v6.4 and Later, 3. Advanced	31/Aug/2010    2010/08/31	Pall Bjornsson