We developed a web part showing the folders hierarchy using tree view control. However the folders were not getting displayed in the tree view node in the order they are visible inside the document library i.e. sorted on name.

Creating a tree view

http://www.davehunter.co.uk/Blog/Lists/Posts/Post.aspx?List=f0e16a1a-6fa9-4130-bcab-baeb97ccc4ff&ID=115

So finally used the following code to sort the folders

List<SPFolder> folderList = new List<SPFolder>();

foreach (SPFolder myFolder in folder.SubFolders){

folderList.Add(myFolder);

}

folderList.Sort(delegate(SPFolder p1, SPFolder p2) { return p1.Name.CompareTo(p2.Name); });

For more information on sorting

http://www.developerfusion.com/code/5513/sorting-and-searching-using-c-lists/

Bye..

Hi,

Yesterday while browsing encountered the following site

http://refcardz.dzone.com/

The site has got nice reference material written by experts.

Do check out this site !!

Bye …

Delegate acts as a function pointer.

We define the function to which the delegate can point to in this manner

// Delegate which will point to a method which has no parameter and returns nothing

public delegate void MySimpleDelegate();

// Delegate which will point to a method which takes string as parameter and returns string as well

public delegate string MyComplexDelegate(string message);

Now comes our two function to which delegates would be pointing 

public void SimpleDelegate(){

MessageBox.Show(“My Simple Delegate”);

}  

public string ComplexDelegate(string name){

MessageBox.Show(name);

return “Hi “ + name;

} 

// We have created an instance of our MySimpleDelegate

// which would be referencing SimpleDelegate function

MySimpleDelegate myD = SimpleDelegate;

// when we call the delegate it calls the method which it is pointing to

myD();

// Same thing with our MyComplexDelegate

MyComplexDelegate myAD = AnotherDelegate;

myAD(“Hello”);

// If we know that our function SimpleDelegate() and ComplexDelegate(string name)

// wouldn’t be called by any other code other than the delegate itself we can

// make use of anonymous method i.e. method with no name

// Here again we have done the same thing but used anonymous method

// because we aren’t going to use it anywhere else

MySimpleDelegate myD = delegate

{

MessageBox.Show(“Simple Delegate”);

};

myD();

MyComplexDelegate myAD = delegate(String name)

{

MessageBox.Show(name);

return “Hi “ + name;

};

myAD(“Hello”);

// Now let’s shorten our code further using lambda expression

// () -> no input parameter

// => -> lambda operator

// MessageBox.Show(“Simple delegate”) -> statement block

MySimpleDelegate myD = () => MessageBox.Show(“Simple delegate”);

myD();

//(String name) -> explicitly typed parameter

MyComplexDelegate myAD = (String name) => { MessageBox.Show(name); return name; };

myAD(“Hello”);

Bye.

1. Create a Assembly file using following:

        File >> New >> Project >> Class Library >> Name = MyLibCSharp

2. Add a function HelloWorld. Code will look as follows:

using System;

using System.Collections.Generic;

using System.Text;

using System.Runtime.InteropServices;

namespace MyLibCsharp

{

[Guid("FE1EB79E-3513-487e-ADFF-2B61C6CB4730")]

[ComVisible(true)]

public class Class1

{

public String HelloWorld(String name)

{

return (“Hellow World; Welcome “ + name);

}

}

}

3. Sign the Assembly (To enable it to be used by multiple Applications):

Go to Project >> MyLibCSharp Properties >> Signing >> Sign the Assembly >> New >> Key.snk

4. Enable for COM Interop:

Go to Project >> MyLibCSharp Properties >> Build >> Output >> Check the “Register for COM interop.

5. Build the Assembly.

6. Add to GAC using “Visual Studio Command Prompt” the assembly is located in DEBUG/RELEASE folder.

gacutil -I MyLibCSharp.dll

7. Execute the following:

Regasm /tlb /codebase MyLibCSharp.dll

8. ASP code:

<%

Dim foo

set foo = Server.CreateObject(“MyLibCSharp.Class1″)

Response.Write (foo.HelloWorld(“test”))

%>

9. To unregister the assembly

Regasm /unregister MyLibCSharp.dll

10. And to remove the same from GAC (Global assembly cache)

Go to

C:\WINDOWS\assembly

find the assembly you want to remove

select it , right click it and select uninstall

Bye

Hi,
Do check out this very very useful web-site for c# developer for understanding
multi threading and it has got some wonderful tools like

QueryExpression – which has an user interface similar to query analyzer using which we can query oracle, sql server and other databases. It is also very light weight.

And
LinqPad for practicing the Linq syntax.

http://www.albahari.com/index.html