Jeremy Boyd » C#

New ASP.Net MVC GridView Extension

Jeremy — Fri, 16 Jul 2010 14:57:27 +0000

I needed a table builder for a project I was working on. Well I didn’t need it, I was just tired of having to rebuild a table each time I needed one. So I came up with an obvious solution… kind of… I created a helper method!

My Super Kick Ass GridView!

Here is an excerpt of how to use it

GridView – Download me! NOW!

C#, Enums and Strings oh my!

Jeremy — Fri, 07 May 2010 20:06:12 +0000

I find myself having to lookup the same snippets of code a lot. You know, those insignificant lines of code you “never” use.

Recently I have had to look this up twice, and hopefully by placing it here, I will never need to again (knock on wood). So again, without further ado… drum roll please…

enum CcType { Visa, MasterCard, Discover, Amex, Solo, Maestro }
CcType ccType = CcType.Visa;
string cardType = ccType.ToString();
// This will make cardType = "Visa"
// This is easy to remember, because well you are telling it to turn visa to a string.
// The next part I have to look up each time
ccType = (CcType)Enum.Parse(typeof(ccType), "MasterCard");
// There you go, the simple one line string to enum solution.

I hope this saves some Googling… for you and me!

Asp.Net MVC DropDownList With OptGroups

Jeremy — Thu, 29 Apr 2010 16:51:47 +0000

So rarely do I use opt groups, that I had to actually look up their syntax! So when I wanted to use them in a project I’m working on in Asp.Net MVC, I wasn’t very shocked the MVC DropDownList extension didn’t exist for it. So I ended up writing a bit of my own. Stole some code here and there (no shame in that).

So without further ado, for everyones enjoyment, I present GroupDropDownList and SelectListOptionGroup.

public static class Extenders {
    public static string GroupDownDropList(this HtmlHelper helper, string name, IEnumerable>SelectListOptionGroup> data, string optionLabel, object htmlAttributes) {
        if (data == null && helper.ViewData != null) data = helper.ViewData.Eval(name) as IEnumerable>SelectListOptionGroup>;
        if (data == null) return string.Empty;

        var select = new TagBuilder("select");

        if (htmlAttributes != null)
            select.MergeAttributes(new RouteValueDictionary(htmlAttributes));

        select.GenerateId(name);

        var optgroupHtml = new StringBuilder(string.Concat("


"));
        var groups = data.ToList();
        foreach (var group in data) {
            var groupTag = new TagBuilder("optgroup");
            groupTag.Attributes.Add("label", helper.Encode(group.Name));
            var optHtml = new StringBuilder();
            foreach (var item in group.Items) {
                var option = new TagBuilder("option");
                option.Attributes.Add("value", helper.Encode(item.Value));
                if (item.Selected)
                    option.Attributes.Add("selected", "selected");
                option.InnerHtml = helper.Encode(item.Text);
                optHtml.AppendLine(option.ToString(TagRenderMode.Normal));
            }
            groupTag.InnerHtml = optHtml.ToString();
            optgroupHtml.AppendLine(groupTag.ToString(TagRenderMode.Normal));
        }
        select.InnerHtml = optgroupHtml.ToString();
        return select.ToString(TagRenderMode.Normal);
    }
}
public class SelectListOptionGroup {
    public string Name { get; set; }
    public List>SelectListItem> Items { get; set; }
}

Twitter Feed Reader

Jeremy — Fri, 19 Mar 2010 15:59:09 +0000

I have done this many times over, and for once I plan on publishing the code so I can reuse it. This is a Twitter Feed Reader, you pass it the user_status RSS url, with the number of updates you want. This should work flawlessly, but if it doesn’t… I’m sorry. If you need any help implementing this, just let me know. I’m always around to help.

publicclass TwitterStatus {
publicstring Status { get; set;}
publicstring Url { get; set;}
public DateTime Date { get; set;}
publicstatic TwitterStatus[] GetTwitter(string url, int length){

        XDocument xRoot = XDocument.Load(url);
        var items = (from item in xRoot.Descendants("item")

                     select new TwitterStatus() {

                         Status = LinkifyStatusUpdate(item.Element("title").Value),

                         Date = DateTime.Parse(item.Element("pubDate").Value),

                         Url = item.Element("link").Value

                     }).Take(length).ToArray();

        return items;

    }

    private static string LinkifyStatusUpdate(string status) {

        string ret = status.Substring(status.IndexOf(": ") + 2);

        ret = Regex.Replace(ret, @"(http[s]?:\/\/[^\s]+)", "\"$1\">$1");

        ret = Regex.Replace(ret, @"(#[^\W]+)", "\"http://www.twitter.com/search?q=$1/\">$1");

        ret = Regex.Replace(ret, @"@([^\W]+)", "\"http://www.twitter.com/$1/\">@$1");

        return ret;

    }

}

Gif2Png – Gray scale Only

Jeremy — Mon, 22 Feb 2010 18:02:56 +0000

I’m working with a client that saved out a bunch of motifs in to “transparent” gifs, but wants those motifs on a background “without the jaggy” white pixes.

After doing the first 10 or so by hand in PhotoShop (a pain in my rear), I wrote a little C# app to handle all of this for me.

It assumes the image is gray scale, and that white/transparent is the background.

Use it, abuse it! gif2png (source only)

Gif2Png Input (Cat.gif)

Gif2Png Output (Cat.png)