How to rename the image file

Question

2.00/5 (1 vote)

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Hi Friends,
I will retrieve the file from a appropriate folder. i can able to get the image name . but i can't rename that image file . Please Help me

C#

namespace webshoppe
{
    public partial class Image : System.Web.UI.Page
    {
        private static DirectoryInfo dir;
        private static FileInfo[] images;
        private static int currIndex = 0;
        private static int count = 0;
        protected void Page_Load(object sender, EventArgs e)
        {
         dir = new DirectoryInfo(@"D:\Image");
            
           images = dir.GetFiles("*.jpg");
          
           
            count = images.Length;
            if (!IsPostBack)
            {
                if (count > 0)
                {
                    string strImageurl = images[currIndex].Name;
                    strImageurl = "~/Image/" + strImageurl;
                    Image1.ImageUrl = strImageurl;
                   
                    currentname();
                }
            }
        }
      
       
        public void currentname()
        {

            string strImageurl = images[currIndex].Name;
            lblimage.Text = strImageurl;
             images[currIndex].Name= txt_imagename.Text;
           
        }
        protected void submitbtn_Click(object sender, EventArgs e)
        {
            if (count > 0)
            {
                if (currIndex == (count - 1))
                {
                    currIndex = 0;
                }
                else
                {
                    currIndex++;
                }
                string newUrl = images[currIndex].Name;
                newUrl = "~/Image/" + newUrl;
                Image1.ImageUrl = newUrl;
                currentname();
            }
        }
    }
}

Error:

C#

'System.IO.FileSystemInfo.Name' cannot be assigned to -- it is read only

Posted 16-Aug-12 22:02pm

P.Vinoth

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4 solutions

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lalitkr · Answer 1 · 2012-08-16T22:05:00

Solution 1

C# doesn't provide rename facility directly. But you can use either of these two methods.

1)
File.Copy(OldFileName, NewFileName);
File.Delete(OldFileName);
2)
File.Move(OldFileName,NewFileName);

Posted 16-Aug-12 22:05pm

lalitkr

StianSandberg · Answer 2 · 2012-08-16T22:06:00

Solution 2

C#

System.IO.File.Move(oldname, newname);

Posted 16-Aug-12 22:06pm

StianSandberg

Comments

P.Vinoth 17-Aug-12 4:13am

Its not working friend.
error:
Empty file name is not legal.
Parameter name: destFileName

I just want to rename the single image file.. please help me.

StianSandberg 17-Aug-12 4:28am

You have to send in two valid filenames! You get the "Empty file name is not legal error" because either oldname or newname is empty.
System.IO.File.Move("D:\\myFile.txt", "D:\\myRenamedFile.txt"); works perfect..

P.Vinoth 17-Aug-12 5:56am

Its working for .txt files friend.
But i need to rename the image file... Please help me.

Once again thanks fr your posting friend........

StianSandberg 17-Aug-12 6:20am

System.IO.File.Move("D:\\myFile.jpg", "D:\\myRenamedFile.jpg"); ??
Do you get any exception when you try to rename?

P.Vinoth 18-Aug-12 3:08am

no its not working friend..

StianSandberg 18-Aug-12 4:34am

Ok, but do you get some kind of error when you run the code?

Ganesh Nikam · Answer 3 · 2012-08-16T23:27:00

Solution 3

hiii,please refer this

http://codes.codedigest.com/CodeDigest/21-Rename-File-and-Folder-in-C---ASP-Net.aspx[^]

or

http://www.aspnettutorials.com/tutorials/file/file-renfile-aspnet2-csharp.aspx[^]

Posted 16-Aug-12 23:27pm

Ganesh Nikam

Kuthuparakkal · Answer 4 · 2012-08-18T18:58:00

C#

public bool Rename(string FileNameAndPath, string NewName)
 {
     bool ret = false;
    System.IO.FileInfo fi = new System.IO.FileInfo(FileNameAndPath);
    if (!fi.Exists)
        return ret;

    string NewFilePathName = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(FileNameAndPath), NewName);
    System.IO.FileInfo f2 = new System.IO.FileInfo(NewFilePathName);
    try
    {
        if (f2.Exists)
        {
            f2.Attributes = System.IO.FileAttributes.Normal;
            f2.Delete();
        }

        fi.CopyTo(NewFilePathName);
        fi.Delete();
        ret = true;
    }
    catch
    {

    }

    return ret;
 }