The cat command is one of the most frequently used commands on Linux/Unix like operating systems. Needless to say it could also be very useful on your Windows system.

Here is the C# code to create your own cat command...

Program.cs:

using System;

namespace cat {
    class Program {
        static void Main(string[] args) {
            if (null != args && args.Length > 0) {
                foreach (string arg in args) {
                    if (System.IO.File.Exists(arg)) {
                        Console.Write(System.IO.File.ReadAllText(arg));
                        Console.Write(Environment.NewLine);
                    }
                }
            }
        }
    }
}

The usage should be mostly the same as with it’s Unix counterpart.

To learn more see The cat Command.

/*
 * get a hook on the buttons (> or < or >> or <<) of a Click PickList control.
 * call in domloaded() passing the name of the PickList and a js callBack method to be envoked.
 * the callBack method should have one parameter to receive the clicked button element.
 * an additional attribute ('forid') is also set on the button element, 
 * which will contain the requested PickList name.
 *
 * DEMO:
 * The Java Click component...
public Form form = new Form("myForm");
public PickList myPicker = new PickList("myPicker", "My Picker");
@Override
public void onInit() {
    super.onInit();
    form.add(myPicker);
}
 * Now for the JavaScript...
function domloaded() {
    attachToPickListButtons("myForm_myPicker", demoCallBack);
}
function demoCallBack(el) {
	if (!(typeof(el.forid) == 'undefined')) {
		var id = el.forid;
		var directionClicked = el.value; // > or < or >> or <<
		var toSelected = null != directionClicked.match(">");
		var moveAll = null != (directionClicked.match(">>") || directionClicked.match("<<"))
		var plh = new pickListHelper(id);

		var toString = "id = '" + id + "'\n";
		toString += "directionClicked = '" + directionClicked + "'\n";
		toString += "toSelected = '" + toSelected + "'\n";
		toString += "moveAll = '" + moveAll + "'\n";
		toString += "SelectedList = '" + typeof(plh.getSelectedList()) + "'\n";
		toString += "UnSelectedList = '" + typeof(plh.getUnSelectedList()) + "'\n";
		toString += "HiddenList = '" + typeof(plh.getHiddenList()) + "'\n";
		alert(toString);

		if (!moveAll) {
            if (confirm("Just for fun, let's move ALL items to " + (toSelected ? "unselected" : "selected") + " \n(opposite direction you just chose).")) {
                plh.moveAll(!toSelected);
            }
        }
	}
}
*/
function attachToPickListButtons(id, fn) {
    $$("input[onclick^='pickListMove'][type='button']").each(function(field) {
        if (!(typeof(field.onclick) == 'undefined')) {
            var fieldOnclick = "" + field.onclick;
            if (null != fieldOnclick.toLowerCase().match(id.toLowerCase())) {
                Event.observe(field, 'click', function(event) {
                    var element = Event.element(event);
                    element.forid = id;
                    fn(element);
                });
            }
        }
    });
}
/*
 * a wrapper around a Click PickList control
 */
function pickListHelper(id) {
	var _selectedList = $(id);
	var _unselectedList = $(id+ "_unselected");
	var _hiddenList = $(id+ "_hidden");

	this.getSelectedList = function() {
		return _selectedList;
	}

	this.getUnSelectedList = function() {
		return _unselectedList;
	}

	this.getHiddenList = function() {
		return _hiddenList;
	}

	this.moveAll = function(toSelected) {
		// call pick list method from click control to do the heavy lifting
		var fromList = toSelected ? _unselectedList : _selectedList;
		var toList = toSelected ? _selectedList : _unselectedList;
		pickListMoveAll(fromList, toList, _hiddenList, toSelected);
	}
}

set fso = CreateObject("Scripting.FileSystemObject") 
strLongName = Wscript.Arguments(0)
strShortName = "Invalid File/Folder - (" & strLongName & ")"
Set fsoFile = Nothing
On Error Resume Next
Set fsoFile = fso.GetFile(strLongName)
if Err.number <> 0 then
Set fsoFile = fso.GetFolder(strLongName)
end if
if fsoFile is not nothing then
strShortName = fsoFile.ShortPath
end if
Wscript.Echo strShortName

cscript shortname.vbs "C:\Program Files\Adobe\Reader 9.0\Reader\AcroRd32.exe"

C:\PROGRA~1\Adobe\READER~1.0\Reader\AcroRd32.exe

The problem:
In a DataGridView, after adding a new row, and clicking away, the new row disappears.

The solution:
This is most likely caused by an error being raised due to a data input error. Im my case it was because of a non visible column not allowing nulls.
put a break point in the "DataError" event handler. Even though the error might be written to the row's ErrorText, it is never displayed because the row disappears.

---------------------------
Remote Desktop Connection Usage
---------------------------
MSTSC [] [/v:] [/admin] [/f[ullscreen]]
[/w: /h:] [/public] | [/span] [/edit "connection file"] [/migrate]
"connection file" -- Specifies the name of an .rdp file for the connection.
/v: -- Specifies the remote computer to which you want to connect.
/admin -- Connects you to the session for administering a server.
/f -- Starts Remote Desktop in full-screen mode.
/w: -- Specifies the width of the Remote Desktop window.
/h: -- Specifies the height of the Remote Desktop window.
/public -- Runs Remote Desktop in public mode.
/span -- Matches the remote desktop width and height with the local
virtual desktop, spanning across multiple monitors if necessary. To span
across monitors, the monitors must all have the same height and be aligned
vertically.
/edit -- Opens the specified .rdp connection file for editing.
/migrate -- Migrates legacy connection files that were created with
Client Connection Manager to new .rdp connection files.
---------------------------
OK   
---------------------------

There seems to be a conflict between the SyntaxHighlighter javascript and the BlogEngine.NET Widget Zone administration drag-and-drop javascript. When the SyntaxHighlighter Extension is enabled, the drag-and-drop in the Widget Zone does not work although there doesn't seem to be any javascript errors.

Luckily we don't need to rearrange the widget zone that often. So when you need to do that just disable the SyntaxHighlighter Extension temporarily, rearrange your widgets and enable the SyntaxHighlighter Extension again.

Here's an updated LinkList widget that allows for changing the order of items in the list with a 'Move Up' command.
Also updated the txtUrl control's ValidationExpression to cater for urls starting with '/', '~/' and 'mailto:'.

Download the updated LinkList widget or get the patch files from CodePlex to apply to your working copy.

As promised in a previous post here is the Grass And Sky template adapted for BlogEngine.NET 1.4

This theme is not a 100% complete yet, but maybe you can make it work for yourself.

Download and give it a go.

Looking for ways to add syntax highlighting to my blog I came accross Scott Dougherty's article for Adding SyntaxHighlighter to BlogEngine.NET and then Chris Blankenship's SyntaxHighlighter Extension for BlogEngine.NET.

I really like his extension, but I wanted the installation path and loaded language scripts to be configurable so I've updated his extension to use the BlogEngine Extension Manager.

1. Download SyntaxHighlighter
2. Extract and upload the SyntaxHighlighter code to your blog (I renamed the dp.SyntaxHighlighter directory to just SyntaxHighlighter)
   eg. ~/extensions/SyntaxHighlighter
3. Download, extract and upload the SyntaxHighlighter.cs file into the ~/App_Code/Extensions directory

   NOTE:
   If you already had the SyntaxHighlighter Extension from Chris Blankenship installed, you might have to delete the "~/App_Data/datastore/extensions/SyntaxHighlighter.xml" file before the new extension settings will be loaded.

4. Login to your blog and go to "Extensions" under the "Control panel"
5. Click on "Edit" next to the "SyntaxHighlighter" extension and configure as required (see preview below)

For a list of supported languages see the syntaxhighlighter wiki

For Windows Live Writer support:

1. Download and install Windows Live Writer and the SyntaxHighlighter for Windows Live Writer plugin (Requires .Net 3.5 framework)
2. Update the blog style (In Live Writer under the "Weblog" menu then "Edit Weblog Settings..." and click on the "Editing" tab)

NOTE:
If you have custom ordered list item styles in your theme, you might have to make a small change to the SyntaxHighlighter CSS. In my case I've got a custom list-style-image so I had to make the following change in the "SyntaxHighlighter\Styles\SyntaxHighlighter.css" file:
in the following bit, I added list-style-image: none;:

/* clear styles */
.dp-highlighter ol,
.dp-highlighter ol li,
.dp-highlighter ol li span 
{
margin: 0;
padding: 0;
border: none;
list-style-image: none;
}

Index: /BlogEngine/BlogEngine.Web/extensions/SyntaxHighlighter/Styles/SyntaxHighlighter.css 
=================================================================== 
--- /BlogEngine/BlogEngine.Web/extensions/SyntaxHighlighter/Styles/SyntaxHighlighter.css 
+++ /BlogEngine/BlogEngine.Web/extensions/SyntaxHighlighter/Styles/SyntaxHighlighter.css 
@@ -17,6 +17,7 @@
margin: 0;
padding: 0;
border: none;
+	list-style-image: none;
}
.dp-highlighter a,

If you are getting the following JavaScript error in Firefox 3, here is a quick workaround:

Error: invalid 'in' operand this._sandBox Source File: file:///C:/Program%20Files/Mozilla%20Firefox/components/nsProxyAutoConfig.js Line: 95

if (!("FindProxyForURL" in this._sandBox))
   return null;

try {
   if (!("FindProxyForURL" in this._sandBox))
      return null;
} catch (e) { return null; }