End Sub. When the user runs the application now and clicks on the Open button, an Open File dialog is presented to user that allows the user browse files on their system. The user can select a text file and click on Open. For demonstration purposes, let us open the Sample. The final step is to use the FileInfo. OpenText to return a stream reader containing the text file contents. The text gets displayed in the TextBox as shown below:. Once the user has edited the text in the textbox, we will persist the changes to Sample.
We will use the SaveFileDialog control for this purpose. GetBytes txt. Text ;. Write tbyte, 0, tbyte. Length ;. Close ;. In the code shown above, we are saving the file contents using a stream by calling the OpenFile method.
However, the automatic fix also works for other language versions of Windows. Note If you are not currently using the computer that is experiencing this problem, you can save the automatic fix to a flash drive or to a CD, and then you can run it later on the computer in question. When the Fix it solution has completed, click the link below to install the latest version of Microsoft Silverlight:.
When the uninstall completes, right-click the CleanSilverlight. Microsoft Community Have other questions? To obtain free support, check out our Microsoft Community. There, you can search for answers or ask other users specific questions. Symptoms When working with Microsoft Silverlight you may encounter the following scenarios: Install Microsoft Silverlight Upgrade to another version of Microsoft Silverlight Uninstall Microsoft Silverlight Microsoft Silverlight does not work as expected Attempts to restart the computer and try to upgrade, install or uninstall Microsoft Silverlight again end in the same results.
Cause This issue can occur if an existing installation or uninstall has become corrupt. Silverlight is a Web application. You never want to run any web application that can access your local drive and putting random things there without you knowing it. Do you want to hit a web site that can putting any files on your local drive and might start the some program on your machine without permission? That's called hacking. If you want download file feature so user can intentionally download a file, that feature is already provided by Silverlight.
Because that process is controlled by the user. User can choose if they really want to download the file and choose where to put it. Currently, if I want to generate a file from Silverlight and save it to users' local machine. I have to do following.
Correct me if I'm wrong. I'm figuring the second behavior sounds a little bit more efficient. And it's just as safe as the first one.
When I'm saying "save", it doesn't mean there's no messages to the users. For instance, if one page includes an ActiveX control, IE will ask you whether you'll allow it. Yes, I do think the feature you are asking makes perfect sense. A action should be allowed as long as user is aware what is going on and with their permission. Currently you have to upload the file to server if the file is generated from Silverlight then have the user download from there.
If they allow user to transfer file from isolated storage area when they choose to save that would be perfect. If you want to save the XML file on the local machine so your Silverlight application can still use that data later, then you can save the file to the IsolatedStorage area.
This feature is available in SL2 and can be done in your Silverlight code without user knowing it. But if you want the feature that user can save the file to anywhere they want so they can use that file, then you have to use SL3's SaveFileDialog feature just like ksleung suggested. The most flexible option is to use the file dialog classes.
With the Open and Save file dialogs, you can get access to any file that the end user chooses, as long as the user has appropriate permissions.
User consent is central to this approach. The user has to choose which file to read, or when saving, they pick a file to overwrite or pick a location and a file name for you. The second option is to use the various classes in the System. IO namespace. Silverlight offers classes such as FileStream, StreamWriter, FileInfo, Directory, and DirectoryInfo , all of which make it possible to write code that opens and accesses files without needing to get the user involved.
That may be more convenient for the developer, but of course, most users would not want any old code downloaded as part of a web page to be able to search around in their files.
The SaveFileDialog class shows the standard operating system supplied user interface for choosing where to save a file. Calling ShowDialog , causes it to appear, and the return code tells us whether the user selected a place to save the file, or cancelled the dialog. You might be wondering about the redundant-looking comparison with True there. If ShowDialog returns True value, which means the user has selected a file.
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