How To: Calculate Mathematical Expressions in .NET

May 18, 2010

keithrull

Everyday you learn something new. You do. That is if you let yourself to be taught everyday. I didn’t know that you could solve this expression string in .NET in one line of code: “4 + 5 + 10 – 4 / 5 * 2”

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;

namespace KeithRull.SimpleExpressionCalculator
{
    class Program
    {
        static void Main(string[] args)
        {
            string expressionToEvaluate = "4 + 5 + 10 - 4 / 5 * 2";
            var result = new DataTable().Compute(expressionToEvaluate, null);
            Console.Write(result);
            Console.Read();
        }
    }
}

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

namespace KeithRull.SimpleExpressionCalculator

{

class Program

{

static void Main(string[] args)

{

string expressionToEvaluate = "4 + 5 + 10 - 4 / 5 * 2";

var result = new DataTable().Compute(expressionToEvaluate, null);

Console.Write(result);

Console.Read();

}

The result is 17.4. Nifty huh? You can […]

Just Released: Silverlight 4 Tools for VS 2010, new SL themes and WCF RIA Services

.NET ,Release ,Silverlight ,Tech News and Issues ,WCF

May 18, 2010

keithrull

Just in case you missed it, Tim Heuer has announced that Silverlight 4 Tools for Visual Studio 2010, WCF RIA Services and 3 new SL themes have been released today. This is an exciting news for Silverlight aficionados who have been waiting for the RTM version of SL4 Tools since the last RC who are […]

How To: Change the row and column colors of a table using jQuery

jQuery

May 6, 2010

keithrull

Here’s a quick and easy way to alternate the row colors of a table using jQuery

<span style="color: Black; background-color: Transparent; font-family: Courier New; font-size: 11px;">&lt;script&gt;<br>     $(document).ready(<span style="color: Blue; background-color: Transparent; font-family: Courier New; font-size: 11px;">function</span>()<br>     {<br>         <span style="color: Green; background-color: Transparent; font-family: Courier New; font-size: 11px;">//set the color of the row based on rowindex</span>
         $(<span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">".report-table-horizontal tr:even"</span>).css(<span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">"background-color"</span>, <span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">"#FFF8DC"</span>);<br>         $(<span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">".report-table-horizontal tr:odd"</span>).css(<span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">"background-color"</span>, <span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">"#FFFBD0"</span>);<br>         <br>         <span style="color: Green; background-color: Transparent; font-family: Courier New; font-size: 11px;">//highlight the table titles by selecting the first row</span>
         $(<span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">".report-table-horizontal tr:first"</span>).css(<span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">"background-color"</span>, <span style="color: rgb(102, 102, 102); background-color: rgb(228, 228, 228); font-family: Courier New; font-size: 11px;">"#FFCC33"</span>);<br>         <br>     });<br> &lt;/script&gt;</span>

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$(".report-table-horizontal tr:even").css("background-color", "#FFF8DC"); $(".report-table-horizontal tr:odd").css("background-color", "#FFFBD0"); //highlight the table titles by selecting the first row

$(".report-table-horizontal tr:first").css("background-color", "#FFCC33"); }); </script>

The resulting code will apply the to the table and would look like this: Basically what the code is doing is that it is selecting a css class called “report-table-horizontal” and applies the style to the tr attribute of […]

How To: Encrypt the ViewState in ASP.NET

.NET ,ASP.NET ,Tutorial

May 4, 2010

keithrull

Sometimes its the basic things that we tend to forget. It’s true. One example is encrypting the ViewState. Someone asked me this question today and I had to admit that I wasn’t able to answer on top of my head. Whats funny is that I’ve been doing it all along but never told myself to […]

Month: May 2010

How To: Calculate Mathematical Expressions in .NET

May 18, 2010

keithrull

Just Released: Silverlight 4 Tools for VS 2010, new SL themes and WCF RIA Services

May 18, 2010

keithrull

How To: Change the row and column colors of a table using jQuery

May 6, 2010

keithrull

How To: Encrypt the ViewState in ASP.NET

May 4, 2010

keithrull

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