How to check whether a directory is readonly

OP says he has tried the following code to test whether a directory is read-only:

DirectoryInfo di = new DirectoryInfo(@"e:\\test");
if (di.Attributes == FileAttributes.ReadOnly)
{
    MessageBox.Show("Read only"); }
else
{
    MessageBox.Show("No");
}

This is almost correct, it just doesn't take into account the fact that the Attributes property is a "flag" enum, meaning that it can be set to any combination of the available FileAttributes[^] values.

In other words, for a folder, the Attributes property will contain at least FileAttributes.Directory, along with any other flags that may be set (like the ReadOnly flag).

If we're only interested in a particular flag (in this case, whether it's read-only), we need to do this:

if ((di.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)

The rest of the code can stay as-is.

To clear the read-only flag from a folder, you need to unset the ReadOnly flag in the Attributes property:

di.Attributes = (di.Attributes ^ FileAttributes.ReadOnly); // This clears just the ReadOnly flag, the rest of the flags stay the same.

Note that this may fail if you don't have the correct permissions to make changes to this folder, or if it's a system folder (i.e. it has the FileAttributes.System flag set).

Hope this helps.

There is a function HasAttribute
Never used it though but this shall work:

DirectoryInfo di = new DirectoryInfo(@"e:\\test");
if (di.Attributes.HasFlag(FileAttributes.ReadOnly))
{
    //Your Logic Here
}

Check if folder is read only in C#.net
http://stackoverflow.com/questions/7511592/check-if-folder-is-read-only-in-c-net[^]
https://msdn.microsoft.com/en-us/library/system.io.fileinfo.isreadonly(v=vs.110).aspx
How to find whether a directory is Read-only (Using C#.NET)
http://www.dotnetspider.com/forum/75467-How-to-find-whe-er-a-directory-is-Read-only-Usin.aspx[^]