Thursday, July 31, 2008

Parse html table cells

I wanted to parse a html table and color the TD - s (background).
All of them.
I have a column that has links in it. My basic Idea was to change the background color of the TD when you click the link inside that. That's easy, but without some global (js?) variable, you don't know what was previously clicked, and you might want to turn that "off" :)
Anyways: this is how I did it:

function ParseTableAndColorTheBackground(objTbl, WhatColorShouldItBe)
var intNrOfTrs = objTbl.tBodies[0].rows.length;
for (var i=0; i < intNrOfTrs; i++)
objTbl.tBodies[0].rows[i].cells[1].style.backgroundColor = WhatColorShouldItBe;

you have a better way to do this?

comment me pls

Friday, July 11, 2008

Ajax Databind – javascript error “unknown runtime error”

I had this error a few minutes ago. It was the weirdest thing. On a Save button (linkbutton) I had a gridview repopulated using Ajax. The Save linkbutton was also added as a trigger for the Ajax’s UpdatePanel. The save went well, saved in the database, but when it came to refresh the gridview, this javascript error popped up.

The fix was move the stuff around. Scriptmanager, UpdatePanel, ObjectDataSource … all of them inside the form … Anyways … if you have this error, you don’t necessarily have a big problem, you just need to figure out what did you put in the wrong place.

< form id="form1" runat="server">

< ajax:ScriptManager runat="server" ID="ScriptManager1" EnablePartialRendering="true">
< Services>
< ajax:ServiceReference Path="../Include/WebService.asmx" InlineScript="true" />
< /Services>
< /ajax:ScriptManager>
< ajax:UpdatePanel ID="up2" runat="server">
< ContentTemplate>
< asp:GridView>
< /asp:GridView>
< /ContentTemplate>
< Triggers>
< ajax:AsyncPostBackTrigger ControlID="lbnSave" EventName="Click" />
< /Triggers>
< /ajax:UpdatePanel>

< asp:ObjectDataSource ID="ods" ...
< SelectParameters>
< asp:QueryStringParameter ...
< /SelectParameters>
< /asp:ObjectDataSource>

< /form>

see ya

Thursday, July 3, 2008

C# convert mm/dd/yyyy string to "5 minute(s) ago"

this is how utube does it:

For a forum-kinda thing I wanted to (C#) convert mm/dd/yyyy string to "5 minute(s) ago" - like Youtube does.

Here's how u I did it:
(please feel free to comment, get me a better way to do this :D)

/// < summary>
/// transform into "9 hours ago" or "8 days ago" etc ...
/// < /summary>
/// < param name="makeThisNiceDateFormat">some date string ... "mm/dd/yyyy"< /param>
/// < returns >example: "5 minute(s) ago"< /returns>
public static string ConvertDateToHoursAgo(string makeThisNiceDateFormat)
if (!IsDate(makeThisNiceDateFormat))
return makeThisNiceDateFormat;
DateTime dtOriginal = DateTime.Parse(makeThisNiceDateFormat);
//check if we need to display minutes
if (Math.Abs(DateDiff(DateInterval.Minute, dtOriginal, DateTime.Now)) < 60)
if (DateDiff(DateInterval.Minute, dtOriginal, DateTime.Now) == 0)
return "just now";
return (Math.Abs(DateDiff(DateInterval.Minute, dtOriginal, DateTime.Now)) + " minute(s) ago");
//check if we need to display hours
if (Math.Abs(DateDiff(DateInterval.Hour, dtOriginal, DateTime.Now)) < 24)
return Math.Abs(DateDiff(DateInterval.Hour, dtOriginal, DateTime.Now)) + " hour(s) ago";
//check if we need to display days
if (Math.Abs(DateDiff(DateInterval.Day, dtOriginal, DateTime.Now)) < 31)
return Math.Abs(DateDiff(DateInterval.Day, dtOriginal, DateTime.Now)) + " day(s) ago";
//check if we need to display months
if (Math.Abs(DateDiff(DateInterval.Month, dtOriginal, DateTime.Now)) < 12)
return Math.Abs(DateDiff(DateInterval.Month, dtOriginal, DateTime.Now)) + " month(s) ago";
return Math.Abs(DateDiff(DateInterval.Year, dtOriginal, DateTime.Now)) + " year(s) ago";

Note: I got an IsDate function in there which returns true/false ... in case someone tries to send me something that is not a date ...