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I am having a problem doing the following in generics. I have one custom type array. Its a struct with few elements in it like id, shortname, longname Sample data would be 1, a, australia 2, a, asia 3, b, bangkok The problem im facing is that i want to actually gather all unique shortname and place it in another List (generic) I plan to create another new List, and then check whether the element exists in the new List, if not add it, else, move to the next item So i plan to make use of the Exists method in generic (List) but seems like im not sure how to use it since it has predicate. I hope the above explanation makes sense. Does anyone have some idea of how I might go about this? Any help (particularly example code) would be much appreciated.

Hi Gill Thanks for the reply, but how its normally done in a normal situation. Lets say we take a web application for an example, do me connect & disconnect everytime we need to pullout something from the database? Or we do it once during the login page and use it across the page until connection is idle for certain time?

Hi Guys, I need some example code or guidance here. Below is the description of my problem. ------------------------------------- I have a web service with couples of web methods, example is like 1) getNames 2) getLectures 3) getClasses, etc.. So in each of this method, there is a statement which connects to database, meaning whenever user calls "getNames", it connects to db, then retrives the data, release the connection. Then if user calls "getLecturers" again, it connects to db, then retrieves the data again, and releases the connection again. Im trying to eliminate the need of connecting to db for several times each time a web method is called I plan to have two additional webmethods. 1) connect 2) disconnect Meaning each time any developer wants to access this web service methods, they have to call the "connect" method, and then it will create a session of connection, and they can use a list of web methods, once they have finished, they call the "disconnect" web method. Im not sure how to implement this, i want to only connect once and make the connection last for several minutes until its idle for certain time.. Really appreciate if someone can point out an example or reference on how can i implement this logic.. thank you very much..

Hi Guys, I have a custom treeview and additional treenodes properties defined. One of them is StatusType of type enum Actually the issue im facing is when i click a certain node, i want to go up to its parent and check if the StatusType is equivalent to "CAnalysis" for example, if its "CAnalysis", then extract some information and pull out some content. Otherwise, it should go up another level up till the root to find for the "CAnalysis" Status Type. I know how to determine the parent of a node by using the "node.parent" property, but i dont know how to write a looping mechanism to search for the parent of a parent for instance. Any guidance would be greatly appreciated, thank you very much

Hi Guys, thanks a lot for the reply, im not sure why the casting is still not working.. Actually this is wht im trying to accomplish. Im creating a few custom classes to represent each level of nodes..So im just trying to detect the type of node when the user try to expand the tree. So according to the type of node, then i know which value should be loaded as its child. I dont want to use the depth level as its very rigid, and its not good if there is a change need to be implemented in future. So i want to create something similar to the link shown below in asp.net. If anyone has some idea, hope you dont mind sharing it with me. Thanks al ot http://www.devcity.net/Articles/23/1/custom_treeview.aspx

Its of type TreeNode..But in previous version, im able to do this kind of casting..because im just converting its type to its subclass which is the concept of OOP..Am i right..I dont think there is a syntax issue with this statement..What is your opinion on this..This type of casting is possible right?

Hi Guys, Im not so sure why this code throws out an casting error since this feature can be implemented in vs 2003 but not in vs express 2005.. Basically i have a class which is inheriting the TreeNode class public class DGTree : TreeNode { private string groupName; public DGTree() {} public DGTree(string groupName, string text) { this.GroupName = groupName; this.Text = text; this.NavigateUrl = "index.aspx"; this.PopulateOnDemand = true; } public string GroupName { get { return groupName; } set { groupName = value; } } } Then, somewhere in the aspx page, im using the above class to create a treenode DGTree parent = new DGTree("CAnalysis", "Fabrication"); TreeView1.Nodes.Add(parent); DGTree parent1 = new DGTree("CAnalysis", "Assembly"); TreeView1.Nodes.Add(parent1); Everything works fine..But when i try to retrieve the value of GroupName attached to each node using the event "TreeNodePopulate", i get some casting error. It seems like its not possible to cast the TreeNode Class to its subclass to retrieve its member values (GroupName) Error: Unable to cast object of type 'System.Web.UI.WebControls.TreeNode' to type 'DGTree'. protected void TreeView1_TreeNodePopulate(object sender, TreeNodeEventArgs e) { DGTree node = (DGTree)e.Node; populateChildren(node.GroupName.ToString()); } Im not sure why, but this same approach works in the .net 2003, but no idea why it doesnt work in express edition 2005, am i missing something?

Hi mskeel, thanks for pointing out another solution..seems simplier for .net2.0..thankss..

Cags, U r just greatttttt...thank you sooo much for guiding me through up to the solutions..thank you very very much..u r a great programmer.. I reallly appreciate it..thanks a millioonnn cags..thankss

Hi Cags, thank you very very very much..you have really helped me alot.. i seems the value is going in properly.. but i try to retrieve it, but im not sure im retrieving it the correct way.. the web service seems to show page cant be displayed after executing this statements below.. foreach (CAnalysisFieldCollection CAF in CAnalysisNames) { double id = CAF[0].id; string fullname = CAF[0].fullname; } How do i actually loop back the items in CAnalysisNames? thamk you alot again..

Hi Cags, thank you very much for pointing out the code..would appreciate if you are able to provide some explanation for the "public class CAnalysisFieldCollection : CollectionBase" And just have 2 questions, 1) what is the declaration for myCollection object? 2) How do i return the array back to the function? Initiality this is what i did. public RuleDbDataTypes.CAnalysisField[] processAnalysesNames() { RuleDbDataTypes.CAnalysisField[] AnalysisNames=null AnalysisNames = new RuleDbDataTypes.CAnalysisField[]; while (reader...) return CAnalysisField; } thanks a million..

Hi Cags, thanks for the quick reply..would appreciate if you have a short example of strongly typed array so that i can get a better picture of it. thank you very much

Hi Guys, I have been working on this for the past few hours but cant seem to get it right.. I have a web service..and i plan to use the dynamic array for array declaration I have a struct like below public struct CAnalysisField { public double id; public string name; public string fullname; public string description; } And below is my code to loop through data reader. public RuleDbDataTypes.CAnalysisField[] processAnalysesNames() { RuleDbDataTypes.CAnalysisField[] AnalysisNames=null;int i=0; OracleConnection con = databaseLogon(�x�,�x�,�x�); OracleDataReader reader = processORA(con,constructSQL(ConfigurationSettings.AppSettings["getAnalysesNames"])); //AnalysisNames = new RuleDbDataTypes.CAnalysisField[]; // find way to create dynamic array while (reader.Read()) { AnalysisNames[i].id = reader.GetDouble(0); AnalysisNames[i].name = reader.GetString(1); AnalysisNames[i].fullname = reader.GetString(2); AnalysisNames[i].description = reader.GetString(3); i++; } databaseLogout(con); return AnalysisNames; } The problem is that i dont know how to create a dynamic array and keep appending the array size as the record goes in. I dont want to execute a separate query to get the count(*), as it will take extra time, and i feel its good if we can change the size of array dynamically.. thank you very much for any help..

Hi Guys, I have been finding for this answer for quite some time but fail. My question is that can we control that xml output from a web service? Let me explain I have a small method like this in my web service public decimal AddNumbers(decimal lnNumber1, decimal lnNumber2) { return lnNumber1 + lnNumber2; } After data is keyed in, i automatically get this format. <?xml version="1.0" ?> <decimal xmlns="http://tempuri.org/">32.12</decimal> So here, can i change the xml format in a web service? Maybe i want this format <?xml version="1.0" ?> <number1> 2 </number1> <number2> 3 </number2> <results> 5 </results> This is just a sample, i want to do something like this, but it seems web service doesnt allow me to do this. I hope someone can provide me with some useful links,suggesstions or codes on how to do this.. thank you very very much for any help

Hi Guys, I have a few aspx pages which returns xml results.. Meaning user will send a url through external application and it will return xml results in an aspx page. For ex: user might send a url like : http://10.20.2.2/fol/getNames.aspx And this page might return some data in xml format like the following <names> <name id = "1" name="john" age="20" /> ... </names> So the flow is : User send URL -> XML Results return to aspx page -> apply xslt -> return html My question is that how can i apply xslt to this getNames.aspx so that it converts the data into some html format table? thank you very much for any sugesstions/ideas