Lets we have a HTML Table whose id=tblemail and it contain many rows and every row contains a check box.. and this HTML table contains check box in its header.. so when i click on checkbox of header then all checkboxes of rows of that table should be checked/ unchecked according to check box in header... < table id="tblemail" border="1" style="text-align: left" width="80%" class="border" > <...
Sunday, January 31, 2010
Friday, January 29, 2010
What is the difference between Server.Transfer and Response.Redirect? Why would I choose one over the other?
Server.Transfer transfers page processing from one page directly to the next page without making a round-trip back to the client's browser. This provides a faster response with a little less overhead on the server. Server.Transfer does not update the clients url history list or current url. Response.Redirect is used to redirect the user's browser to another page or site. This performas a trip back to the client where the...
What methods are fired during the page load?
Init() - when the page is instantiatedLoad() - when the page is loaded into server memoryPreRender() - the brief moment before the page is displayed to the user as HTMLUnload() - when page finishes loadin...
What is the difference between Response.Write() andResponse.Output.Write()?
Response.Output.Write() allows you to write formatted output. for eg:it is very similer to console.write which we use in c#.net(console programming)we use place holders for formated output...Response.Output.Write("Item: {0}, Cost: ${1}",item.Description, item.Cost...
What is the role of inetinfo.exe, aspnet_isapi.dll andaspnet_wp.exe in the page loading process?
inetinfo.exe is the Microsoft IIS server running, handling ASP.NET requests among other things.When an ASP.NET request is received (usually a file with .aspx extension), the ISAPI filter aspnet_isapi.dll takes care of it by passing the request to the actual worker process aspnet_wp.exe.actually mainly inetinfo.exe:Inetinfo.exe is the ASP.Net request handler that handles the requests from the client .If it's for static resources...
What is the maximum possible length of a query string?
Many of times this question have been asked while interview or we also should know that how much characters a query string can contain....Although the specification of the HTTP protocol does not specify any maximum length, practical limits are imposed by web browser and server software.Microsoft Internet Explorer (Browser)Microsoft states that the maximum length of a URL in Internet Explorer is 2,083 characters, with no more...
Wednesday, January 27, 2010
Date Difference in JavaScript
function days_between(date1, date2) { // The number of milliseconds in one day var ONE_DAY = 1000 * 60 * 60 * 24 // Convert both dates to milliseconds var date1_ms = date1.getTime() var date2_ms = date2.getTime() // Calculate the difference in milliseconds var difference_ms = Math.abs(date1_ms - date2_ms) // Convert back to days and return return Math.round(difference_ms/ONE_DAY)}// now you can...
Tuesday, January 19, 2010
Make HTML textbox readonly
to make html textbox readonly follow below steps:make Html textbox runat="server" and in codding writetxtname.Disabled = Tr...
Monday, January 18, 2010
Optional Nullable Parameter introduced in VB.NET 10
In previous editions like .net framework 2.0/3.0/3.5 we were not able to create a Optional parameter as a nullable in vb.net. but now its time to get happy. you can create Nullable Optional Parameter in VB.NET 10. eg:Sub MyFunc(ByVal _name As String, ByVal _email As String, Optional ByVal _age As Integer? = Nothing)your codeend sub Benefit: The benefit of Nullable Optional Parameter is that if you want to pass value then it will...
Thursday, January 14, 2010
Improve Query Performance using "With" Clause
Using with clause we can improve query performance. Read complete Artic...
Tuesday, January 12, 2010
Open popup window using JavaScript
if we want to open a popup window using javascript we can do it by using following function:javascript:showWindow('mypage.aspx"',800,600,50)How to use it?if you want to open popup window using Anchor tag of Html:< a href='javascript:showWindow('mypage.aspx"',800,600,50)' >click me< /a >open popup window using Html Button:< input type="button" id="btnmap" name="btnmap" value="Map" onclick ='javascript:showWindow(<...
Colors in CSS
If you are not a regular regular designer or you don't remember names of different colors provided by CSS.Then this is list of all Mostly used colors of CSS:Color NameHEXColorShadesMixAliceBlue #F0F8FFShadesMixAntiqueWhite #FAEBD7ShadesMixAqua #00FFFFShadesMixAquamarine #7FFFD4ShadesMixAzure #F0FFFFShadesMixBeige #F5F5DCShadesMixBisque #FFE4C4ShadesMixBlack #000000ShadesMixBlanchedAlmond #FFEBCDShadesMixBlue #0000FFShadesMixBlueViolet...
Monday, January 11, 2010
Refresh Current Page Using Asp.net Code
below code can be use to refresh the current page at server side event:Page.Response.Redirect(Page.Request.Url.ToString(), true...
Refresh Current Page using JavaScript
Sometimes we need to refresh our current page by clicking on some button (not refresh button of browser). To refresh page you need to call below function: function refreshMe() { location.reload(true); ...
Refresh Parent Page from Popup/child page
some time we have a datagrid/gridview in parent form and we add new values or we remove value from existing grid by using a popup from and we want that when we finish our add/delete/update from popup/child page my parent form should automatically get refresh so i can see the changes i have done in popup form.write the following code in your page: < script language="javascript" type="text/javascript" > function closeme()...
Sunday, January 10, 2010
Select single Radio in DataGrid using JavaScript
some times we need to select a single row from a grid and for that we place a extra column in it. which contain a radio button in it. and we want that only one radio of that column should be selected. so to select single radio button in Grid using JavaScript (client side script) we need to write below code:if your radio is 'runat="Server"' then below code will help you.java Script function:< script language="javascript" type="text/javascript"...
Friday, January 8, 2010
Show Data in Hindi Without Installing Font at Client Side
By using Unicode you can show data in any language without installing Font at client side. for that you need to create a table in database and create a field with nvarchar datatype. then store your language data in that field. and directly show that data on page... it will not need any font to be install...
Wednesday, January 6, 2010
Show Asp.net Calender in Hindi
if you want to show asp.net calender in hindi as show above then you will have to do following:< %@ Page Culture="hi-IN" uiculture="hi-IN" Language="vb"% >< html >< head >< title >Simple Sample - Hindi< /title >< /head >< body >< form runat="Server" >< asp:Calendar id="C1" runat="server"DayNameFormat="Full"...
Tuesday, January 5, 2010
Download any file or image from internet
If you have got URL of images and you want to download that files to your harddisk from internet then this function will help u:NOTE: remember that your URL must contain protocol name like "http://"eg: "http://www.mywebsite.com/aa.jpg" My.Computer.Network.DownloadFile(Url, "c:\myfolder" & "\" & Url.Substring(url.LastIndexOf("/") + 1)) in above code "Url" is your file Url on internetand second parameter is where you want...
How to use controls in function used by Thread
When ever we tries to use any control from thread (function used by thread) then we will get following error:Cross-thread operation not valid: Control 'ControlName' accessed from a thread other than the thread it was created on.Solution:For SETTING PROPERTY VALUE for any control below code will help u out from error:Delegate Sub SetControlValueCallback(ByVal oControl As Control, ByVal propName As String, ByVal propValue As Object)...
Cross-thread operation not valid: Control 'ListBox1' accessed from a thread other than the thread it was created on
This error comes when you tries to add items in list box (or any other control) in thread (or from the function which is being used by thread).Below is solution: Private Delegate Sub stringDelegate(ByVal s As String) Private Sub AddItem(ByVal s As String) If ListBox1.InvokeRequired Then Dim sd As New stringDelegate(AddressOf AddItem) Me.Invoke(sd, New Object() {s}) Else ListBox1.Items.Add(s)...
Basic Java Script Examples
lets we have a gridview as shown in pic. now we want have got rates of room and we want to select quantity in dropdownlist and on that basis we want to calculate total in last column of gridview. and then grand total in label below gridview.then below javascript will help u out: < script language="javascript" type="text/javascript"...
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