How to delete 0KB text file

1) I am new to c sharp,

I am having a problem ,

I know how to delete the file,

I am using this line of code to delete the file,

    private void button2_Click(object sender, EventArgs e)
    {
         File.Delete(a);
    }

I want to know how to delete 0KB file.

2)and one more thin开发者_JAVA技巧g i want to know how many path we can save for our application like ,

    private void button2_Click(object sender, EventArgs e)
    {

            String a = (String)(Application.StartupPath + "\\TEMP");
    }

I think there are more paths like Application.StartupPath ,can anyone pls say how many ways are there to save a path like Application.StartupPath .

There would be a great appreciation if someone could help me,

Thanks in Advance,

1. You delete a 0KB file just like you delete any other file (i.e., File.Delete is correct). If the file cannot be deleted, it is probably in use. You can use Process Monitor to find out which process is using the file.

2. Other special paths can be obtained using Environment.GetFolderPath with the SpecialFolder enumeration.

EDIT (after reading the comments): If you want to delete all 0-length files in the directory, you can

• use Directory.GetFiles to get a list of all the files in the directory,
• use FileInfo.Length to get the size of the files, and then
• use File.Delete to remove certain files.

In fact, the MSDN page on FileInfo.Length contains an example that outputs a list of files and their sizes in a given directory. You should be able to adapt this example to delete all files with 0 length.

In regards to you first question - you delete a 0 length file the same way you do any other file:

File.Delete(pathTo0LengthFile);

Your second question doesn't make sense. You can save your file in any path on the drive that the account the application runs under has write permissions to.

There are several system and special folders that you can get the path of use Environment.GetFolderPath - perhaps that's what you mean.