ZDima.net » C#

ServerInfo – Easily scan a Machine/Server Farm for Information

naspinski — Wed, 28 Jul 2010 15:48:00 +0000

new open-source project in Asp.Net MVC 2 More than once I have been asked what databases are on what server, if server X is running application Y or what websites server ABC is running. These are are relatively simple things to accomplish, and there...

using Server.MapPath() in an Generic Handler (.ashx)

naspinski — Thu, 22 Jul 2010 12:50:00 +0000

if you need to get a local file path in your ashx Instead of using: Server.MapPath() Simply use: System.Web.HttpContext.Current.Server.MapPath()

Inline AJAX DropDown and Text Editing with Asp.Net MVC and jQuery

naspinski — Mon, 12 Jul 2010 09:31:00 +0000

including how to use a database to populate the dropdown First thing is first, you will need to download jQuery and the Jeditable plugin (I prefer to refer to it as the Jedi-Table!). Be sure to put these references in your View (or Masterpage). N...

Inline AJAX DropDown and Text Editing with Asp.Net MVC and jQuery

naspinski — Mon, 12 Jul 2010 09:31:00 +0000

Edit an Object Property Value Dynamically at Run Time

naspinski — Tue, 01 Jun 2010 16:13:00 +0000

no need to write a huge switch statement to make a run time decision

Imagine you have an Object with 50 properties, and at runtime, you only need to change the value of one of them. You could write a switch statement to run through all of them, but there is a better way. This is how it would be done with a switch:

switch(propertyName)
{
    case "Name": obj.Name = newVal; break;
    case "Phone": obj.Phone = newVal; break;
    ///and so on...

That sounds like a terrible idea. With Reflection, it was easy to build an extension to update any object with a new value at runtime (provided it can be written to) with the following code:

public static void SetPropertyValue(this object o, 
    string propertyName, object newValue)
{
    PropertyInfo pi;
    pi = o.GetType().GetProperty(propertyName);
    if (pi == null)
        throw new Exception("No Property [" + 
            propertyName + "] in Object [" + 
            o.GetType().ToString() + "]");
    if (!pi.CanWrite)
        throw new Exception("Property [" + 
            propertyName + "] in Object [" + 
            o.GetType().ToString() + 
            "] does not allow writes");
    pi.SetValue(o, newValue, null);
}

Now, instead of that 50+ line mess above, all you need to do to change the "Phone" property to 'newVal' is:

obj.SetPropertyValue("Phone", newVal);

I added this to my Naspinski.Utilities Set on CodePlex as well.