Rename files in file directory using asp.net

In this example of I will show how to rename all the files in a directory using asp.net. Sometimes you may have thousands of photos that require to rename or add extention at the end the file name. I have used very simple script to rename all the files in a folder with button click event.

First I have inserted a button in my default.aspx page and named that btnRename. In this example I want to add .gif extention with all the files in that folder as currently those files does not have any extention. For the onClick event of that button I have included the following script –

VB Code:

Protected Sub btnRename_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRename.Click
        Dim source As String
        Dim i As String = 0

        'Folder to rename files
        source = Server.MapPath("~/test/")

        For Each fName As String In Directory.GetFiles(source)
            Dim dFile As String = String.Empty
            dFile = Path.GetFileName(fName)
            Dim dFilePath As String = String.Empty
            dFilePath = source + dFile
            Dim fi As New FileInfo(dFilePath)
            fi.MoveTo(source + dFile + ".gif") 'adding extention .gif with the actual file name

        Next
        i = Nothing

    End Sub

If you are using C# then make sure you include onClick event for the specified button –

protected void btnRename_Click(object sender, System.EventArgs e)
{
    string source = null;
    string i = 0;

    //Folder to rename files
    source = Server.MapPath("~/test/");

    foreach (string fName in Directory.GetFiles(source)) {
        string dFile = string.Empty;
        dFile = Path.GetFileName(fName);
        string dFilePath = string.Empty;
        dFilePath = source + dFile;
        FileInfo fi = new FileInfo(dFilePath);
            //adding extention .gif with the actual file name
        fi.MoveTo(source + dFile + ".gif");
    }

    i = null;
}