I have a dll file. The dll file has functions like that "typedef short apiStatus; apiStatus __declspec(dllexport) __stdcall DrfCommOpen (HANDLE * hCom, char *com_port);" how i can call and use this function in my c#.net application? thanks in advance.. regards..

try to add a reference to the AjaxControlToolKit dll in your project

You need to have this code in the correct event i.e. either the page load or the onrowcreate event. I think.

hi... Try This one.... Declare @loopId int set @loopId=1 Declare @vr varchar(100) declare @variable varchar(100) Declare @qry VarChar(1000) while @loopId<=4 begin set @vr='Q'+''+Convert(varchar,@loopId)+'' Select @variable=@vr from test print(@variable ) Set @qry = (Select @variable=@vr from test) set @loopId=@loopId+1 Exec(@qry) end Take Care .... sure there will not be any prob now if still having prob..then reply.. take care... By :-D

i declared a global variable like this: string ddl=""; then in page load i wrote the following line: ddl = ddlCountry.ClientID; now in javascript i write like : var DrpDwn = document.getElementById("ddl"); alert(DrpDwn). Above is code is not working.What is wrong I am doing.Remember ddlCountry is inside wizard control.

Isn't this the same thing as your post 'single instance of an application using Application start in global.asax.'? Bob Ashfield Consultants Ltd

You were helped here: http://www.codeproject.com/script/Forums/View.aspx?fid=12076&msg=2590198[^] Vasudevan Deepak Kumar Personal Homepage Tech Gossips All the world's a stage, And all the men and women merely players. They have their exits and their entrances; And one man in his time plays many parts... --William Shakespeare

I agree with Chrisitan's post below, that's how I would do it probably, but I still don't know what is your scenario, so there could be better way how to achieve what you need.

// Function to remember the login details in a cookie. function RememberMe() { // Get the login data. var username = document.getElementById('txtUsername').value; var password = document.getElementById('txtPassword').value; // Remember the cookie for 100 days from now. var date = new Date(); date.setTime( date.getTime() + (8640000000) ); // Set the cookie. document.cookie = "Username=" + username + "; expires=" + date.toGMTString() + "; path=/"; document.cookie = "Password=" + password + "; expires=" + date.toGMTString() + "; path=/"; } ' Read and set the username and password from the cookies. If IsNothing(Request.Cookies("Username")) = False Then txtUserName.Text = Request.Cookies("Username").Value If IsNothing(Request.Cookies("Password")) = False Then txtPassword.Text = Request.Cookies("Password").Value Source : http://www.geekpedia.com/tutorial81_Handling-cookies-in-ASP-.NET.html[^] Best Regards ----------------- Abhijit Jana "Success is Journey it's not a destination"

Singleton Pattern is used when only one instance of a class is needed to provide services. In other words, only one instantiation. Here is an example: public class SingletonClass { private static SingletonClass _myInstance; //Private constructor so clients can not instantiate private SingletonClass { } // Clients call this when they need an instance of this class // Needs to be static as it can be called without instantiation or instance of this class public static SinletonClass getInstance() { if (_myInstance == null) { _myInstance = new SingletonClass(); } return _myInstance; } } The whole idea is the class checks whether an instance is available, if yes it returns it, else creates and returns it. Let me know if you have questions.