c# Archives - LDNDeveloper

Starting a WebForm Project

I would suggest starting with an empty project rather than letting Microsoft build you one. By you creating an empty project you are able to control what goes in it. The “Web Forms”template that Microsoft offers has so many files and structure that you would likely not even use.
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Auto-Link Using Regular Expressions

I was recently asked if I could automatically turn website text (ex: www.google.com ) into HTML hyperlinks. My first thought was ah CRAP! I also wondered why they could not use the link tool in the editor, but they asked so I delivered. With about 5 minutes on Google, I found the perfect solution that worked for me.

Mind you I was working in C# for this, but since it is a regular expression solution; it will apply to virtually any language. The one change that I had made from the original code was to add in a piece that also auto-linked when the text included “http://www.”. You may or may not want the extra addition that I had made.

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Using LINQ to find a control in the ControlCollection

While writing a windows application in C#, I realized that there was no find control method in the ControlCollection class. This was a problem as it would create a significant amount of code to find a control. Well it turns out you can do it using LINQ. I had found a blog that I was able to implement the code fairly cleanly. The original code limited me a little bit, but with a very minor modification I came up with this code.

Original Blog: linq-the-uber-findcontrol

public static class PageExtensions
    {
        public static IEnumerable All(this Control.ControlCollection controls)
        {
            foreach (Control control in controls)
            {
                if (control.HasChildren)
                {
                    foreach (Control child in control.Controls.All()) 
                    {
                         yield return child;
                    }
                }
                else
                {
                    yield return control;
                }
            }
        }
    }

     private Control GetControlByName(string name)
     {
            Control firstEmpty = this.Controls.All()
            .OfType()
            .Where(tb => tb.Name.Trim().Equals(name))
            .FirstOrDefault();
            return firstEmpty;
     }