Refresh parent page partially from iframe without reloading the iframe using javascript in asp.net

Last time we talked about Refreshing the parent page from child window in asp.net using javascript. This technique is useful in many scenarios. (If you haven't been through How to open new window in asp.net using javscript and C-sharp, I would like to suggest to read the post thoroughly. After this you will clearly see why the stuff we are talking about in this post is important.) But programmers using iframe to load another asp.net web page may wonder if we could only partially refresh the parent page so that iframe keeps itself from reloading. This can by done by calling the parent page javascript function from the child page loaded in the iframe. This way we can even avoid the need of ajax to refresh the parent page without affecting the iframe content. As usual I have presented the simple practical approach to tell you as much clearly as possible - follow please. And before continuing, I would like to inform that there is a post regarding Frequent question on parent and child page refresh, reload, function call in asp-net using javascript that discusses, in aggregate, about some more approaches of parent and child page operations.
Parent Asp.net Page

I am the parent page.

        

    

Page to be loaded in parent page iframe

I am content of iframe page.

    
    

Visualize the output

What's in the code?
You see a button in the child page that is loaded in the iframe of parent page. On click of the button, the javascript function displayMessageFromIframeChild() of the parent page is called. This function displays the string message from child page in a div of the parent page. That's all. Happy programming!

Refresh parent page from child window using javascript in asp.net web application

Much often we open child windows from parent web page. In the child page we perform some activities, and later close the window. At the very time we may need to refresh the parent page so that changes made in the child window be reflected in the parent window. We can easily accomplish this using javascript in asp.net web page. Let me show the way using code snippets. If it is your iframe page, you still can refresh the parent page partially from page in iframe (because this will avoid reloading the iframe itself), which I have discussed in another post. And right before following, I would like to inform that there is a post regarding Frequent question on parent and child page refresh, reload, function call in asp-net using javascript that discusses, in aggregate, about some more approaches of parent and child page operations.

Parent asp.net web page

Open child window        
    

This is the parent page. Clicking the link will open the child page Child.aspx in a new window. If you wish you can Open the new window in asp.net web page in different ways, which I have already discussed in a previous post.

Child asp.net web page

This is the child page.
        
    

protected void btnOk_Click(object sender, EventArgs e)
    { 
        //Implement Your logic here.....
        //..............................
        //now refresh parent page and close this window
        string script = "this.window.opener.location=this.window.opener.location;this.window.close();";
        if (!ClientScript.IsClientScriptBlockRegistered("REFRESH_PARENT"))
            ClientScript.RegisterClientScriptBlock(typeof(string), "REFRESH_PARENT", script, true);        
    }

In the child page, I have just put a button. When the button is clicked, the page logic will be implemented (which I have indicated by the comment lines in the event handler of the button in the asp.net child page).

The asp.net plus javascript logic
I have just created the javascript stuff that refreshes the parent page of this child page; see the lines:
this.window.opener.location=this.window.opener.location;this.window.close();
This line replaces the url of the parent page with its own url - that causes the parent page to reload. And yes, I have registered the javascript code block with ClientScript so that it is executed when the postback life cycle of this child page completes.

Happy programming!

C# - Copy files and folders recursively from source to destination folder in c-sharp

In C#, there is no built in function to recursively bulk-copy all files and folders from source to destination folder. So this has to be done manually by the programmer. Being a lover of reusability feature of object oriented programming, I googled and stumbled on the code snippet below:

/// 

    /// Copy folder to another folder recursively
    /// 
    /// /// public static void CopyFolder(string sourceFolder, string destFolder)
    {
        if (!Directory.Exists(destFolder))
            Directory.CreateDirectory(destFolder);
        string[] files = Directory.GetFiles(sourceFolder);
        foreach (string file in files)
        {
            string name = Path.GetFileName(file);
            string dest = Path.Combine(destFolder, name);
            File.Copy(file, dest);
        }
        string[] folders = Directory.GetDirectories(sourceFolder);
        foreach (string folder in folders)
        {
            string name = Path.GetFileName(folder);
            string dest = Path.Combine(destFolder, name);
            CopyFolder(folder, dest);
        }
    }

Note that all files at the source folder have been copied to the destination folder. But folder and files within them have been copied using recursion - see the function of second foreach construct.

Shortcomings? Yes, no exception handling has been done in the snippet. However, the functionality is ok! Thanks to csharp411.com.