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General Question for SQL

Posted By:      Posted Date: September 03, 2010    Points: 0   Category :Sql Server
Hi,  i am working at DB platform since last 2 years ... now i heard about .Net 2010. this platform have lots of new features like (create database, tables and storedprocedure also inbuilded ).. so its affect DBA, DBD prefession for features?..   Thanks in Advance

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General Question



I'm wondering why I never see an object like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TestConsole
    class TestClass2
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            A = "test";
            B = "test2";
            C = "test3";
            D = C;

        public string A

        public string B

        public string C

        public string D


Instead of something like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TestConsole
    class TestClass
        public string a;
        private string b;
        private string c;
        private string d ;

        public TestClass()
            a = "test";
            b = "chest";
            c = "chief";
            d = "test2";


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In MVC I can't find this option.

  1. What is the basic DATA MODEL for working with SQL DB.

I mean with no any framework (entity framework, Sub sonic, Link to SQL etc')

I look for basic application that works with data but with no fw.

  1. What is the popular DB framework that working with data.
  2.  I am looking on  mvc series


C# Soup To Nuts  (the best series ever)


I watch some of the MVC video, seems that the music store is good but I have to wait to the other part.

Does any one know and recommend   a Microsoft MVC tutorial?





Web Site to Web Application Question


I've been building web sites and for my next project I will be creating a web application.  I use a 'BasePage' class in all my projects but, since web applications do not contain the 'App_Code' folder, what is the best place/practice for the 'BasePage' class?



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I was not sure what it was so I pasted this from my web.config file :

Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\database.mdf;Integrated Security=True;User Instance=True

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I have updated web.config with passwordFormat=Encrypted and have added a machineKey with the generator (forgot the link, but located on eggheadcafe somewhere).

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I am running Windows 7 and I have gone into Control Panel and activated all of the IIS Functions.

The web application I am running was downloaded from the net (and has worked on other machines previously).  Once I downloaded it, I moved it into C:/inetpub/wwwroot/code/main.asp

I am a bit of a novice at this!  But I am hoping someone can point me in the right direction!


I get the following error when I try and run the web application through IE:

"An error occurred on the server when processing the URL. Please contact the system administrator. If you are the system administrator please click here to find out more about this error."

(When i click the "click here" button it just goes to the IIS site).


Appreciate any help I can get!




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Hi Everyone,

I have a strange problem:


There is an entity (Table) called "Filters" in my .edmx which has all my tables and stuff in it (to use it for LINQ queries)

I have created a class called "CustomFilters" which inherits "Filters". So now my cutom class has all the properties of the original "Filters" class (table) and 1 more additional property that i wanted which is a List of "CustomFilters":

List<CustomFilters> children = new List<CustomFilters>();

Now i get all my records into:

List<CustomFilters> theOriginalList = new List<CustomFilters>();

NOTE: first all records are tken into a List<Filters> and then these are added into List<CustomFilters> where List<CustomFilters> for children of that record is added, and then children of the child records, and so on......

so now, every record is an instance of CustomFilters which has a property named "children" which is a list again; and each child again has instanaces of "CustomFilters", and each instance again has children...and on and on and on.....

(basiacally its a data source for a treeview in my silverlight control)

every thing is good and working as expected.


linqdatasource parameters question



I'm currently getting to know the linqdatasource control. What would happen if several WHERE parameters are added to the linqdatasource control declaritively in the aspx page but no WHERE clause is defined? 

1. is there any issue with setting up multiple WHERE parameters in the aspx markup for linqdatasource but then deciding which ones actually get used at runtime by setting the actual WHERE clause at run time? Would the unused parameters simply be ignored and cause no issues?

2. when you need to modify WHERE clause or WHERE parameters at runtime do you need to do so in an event handler? such as linqdatasource.selecting?
I see from the above link it is possible, but is that the standard way to handle controlling filtering in code behind for linqdatasource?

2b. if you use an event such as linqdatasource.selecting to add where parameters and/or modify the where clause in code will that also break the builtin sorting and paging support of the linqdatasource with a gridview? 

database interface design question


For handy database interface, is it good to use SqldataSources exclusively intead of EntLib functions?

Thanks for any feedback.

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