Do you know how to sort your dropBox items in C#?

Hey again, it is me posting some easy stuff about C# :) which might save you from the trouble of making these easy staff complicated.

So you have a nice dropBox with items like below ;

4 - Z

40 - A

20 - B

30 - D

4002 -AA

..

..

 DataTable dataTable= new DataTable();

 dataTable.Columns.Add("ID"); //by this way I added the first column of my dataTable.

 dataTable.Columns.Add("NAME");   // the second column of my name.

 drpOprBranchName.Items.Insert(0, "Select"); //  The first item of mine.

Then I am gonna fill in my table with data like this ; 

          for (int i = 0; i < arrayOfMine.Length; i++)
            {
                DataRow dataRow= dataTable.NewRow();
                dataRow[0] = arrayOfMine[i].code;
                dataRow[1] = arrayOfMine[i].name;
                dataTable.Rows.Add(dataRow);

            }


The first column is for ID while the second one is for some information like name . And I added a row like shonw above.  Afterwards, I've gotta feeling that I must sort the items I have :)  But first, before forgetting to add the items in my dropbox, let me show how I can add a dataTable into a dropDownList.

Here how it is ;


            DataView view= new DataView(branchNoName);
            view.Sort = " ID ASC";
            dropBox.DataSource = view; //By this way I can state that my dataView will be the source for my dropBox//
            dropBox.DataBind();



The line that is for "view.Sort = " ID ASC";" states that I would like to sort my view based on the ID Column.  However since my column was created without stating its datatype, it will be sorted as if the data of this column are "STRING"s .   But is it ? no , they are my IDs made of numbers and I would like to have an ascending sorting. If I do not specify the type of my column, it will be STRING as default.

The result I got in the first place is ;

20 - B

30 - D

4 - Z

40 - A

400001-OO

403-K

4002 -AA

See the point ? it sorts them as if they are STRING.

Thus, what I need to do is that I need to specify the type of my column as INTEGER while I create it .

dataTable.Columns.Add("ID",typeof(Int32));

By this way, my table knows that the ID column is full of integer values and can be sorted as I want.

                                                                             4 - Z

20 - B

30 - D

40 - A

403-K

4002 -AA

400001-OO

Remote debug problem? in MVS 2008

I suddenly started to have this kind of problem in MVS (Microsoft Visual Studio 2008)  while I try to send a request to the web-service and get a reply from it .  I really appreciate if someone knows how to fix it. I believe that somehow my firewall started to get angry with the things I have been doing :) and decided react in this way.  As soon as I get it fixed, I let you know ;)

lovely warning message : "Object reference not set to an instance of an object." while trying to send a request to an end point

When  I try to create a request by a webservice and  get a response out of it,  I get this lovely warning message : "Object reference not set to an instance of an object.", I always see an animation of "little hearts" flying around me. I feel luv, I feel happiness... Of course these words are irrelevant  to explain my anger towards this snappish warning that I face with in my daily programming life .o_O.

 
The reason for this error is that you are trying to create a whole car without creating first its components such as wheel, glasss, engine and etc.   Ok, let me put this kind of examples away and give a nice example for hard-core coders [as if a hard-coder gets such an error :-) ].


Here how it is,  you have a webservice  "StudentComponent" that has SearchStudentReqıest service that lets you enter some parameters such as name, surname, courses[].  Now when you create a request object in your .cs file like given below;

Student student = new Student();
student.name = "Mike";
student.surname = "Givemefive";
student.courses[5] = new stıdent.courses();
stıdent.courses[0] = "Math";       *
student.courses[1]= 'Scinece";    *
..
..
..

Here the weird thing shows up if you implement your functionality as given above.   The lines marked with "*" cause this problem.  While dealing with SOA,  I am not sure why, you have to initialize each object of the array like

student.courses[0] = new StudentComponent.tcourse();
student.course[1] = new StudentComponent.tcourse();

After doing this, you will have no problem at all.

Note: tcourses() function is assumed to be given in the webservice.



If you can explain it better with your experience , please be my guest and leave a comment ;)