Validating filenames with regularexpressionvalidator


validating filenames with regularexpressionvalidator-10

To change this size limit, you make some changes in either the web.config.comments (found in the ASP. So far, you have seen some good examples of how to upload a file to the server without much hassle. This approach enables you to upload as many files as you want from a single page. Remember, you can control the size of the files that are uploaded by working with settings in either the web.config.comments or web.config file.

NET 2.0 configuration folder at C:\WINDOWS\Microsoft. NET\Framework\v2.0.50727\CONFIG) or your application's web.config file. In the web.config.comments file, find a node called A lot is going on in this single node, but the setting that takes care of the size of the files to be uploaded is the max Request Length attribute. Simply change this value to increase the size of the files that you can upload to the server. Now let's take a look at how to upload multiple files to the server from a single page. NET Framework enable you to upload multiple files from a single ASP. With a little work, however, you can easily accomplish this task just as you would have in the past using . If you wanted to, you could simply handle each and every File Upload control on the page individually, as presented in Listing 5. Handling each File Upload control individually Visual Basic This approach works, but there may be instances where you are going to want to handle the files using the Http File Collection class instead—especially if you are working with a dynamically generated list of server controls. NET page that has three File Upload controls and one Submit button (using the Button control). About the author Bill Evjen is an active proponent of .

NET Machine Account under the Security tab, you can add it by clicking the Add button and entering ASPNET (without the period) in the text area, as illustrated in Figure 2. The Submit button on the page causes the Button1_Click event to occur. File Name) & _ "" End If Catch ex As Exception Label1. Message End Try i = 1 Loop End Sub The end user can select up to four files and click the Upload Files button, which initializes the Button1_Click event.

This event uploads the file and then displays a message telling you if the upload was successful by posting information about the file uploaded. Using the Http File Collection class with the Request.

To validate only the video file, I provide the regular expression for video file formats to the validation control and some properties of the validation control to validate the file upload control.