Fiveesoft's Blog

28/02/2011

fiveesoft — Mon, 28 Feb 2011 19:48:21 +0000

Today’s work

SPLimitedWebPartManager – may cause memory leak

How to get The site template name for the current SPWeb?

Iterate through SPweb.Navigation.QuickLaunch and avoid null or empty result? (does it return null or empty object)

What is memory leak?
memory leak is occurring when a program in computer consume memory but unable to release it back to operating system.
The consequence is not immediate and visible if there is memory leak, but when the available memory are running out, it would stop the system from responding, and eventually crash.

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Add account to SQL Server from command

fiveesoft — Sun, 05 Sep 2010 11:43:47 +0000

If you in case forget add any account to sql server, or forget all the account to login to the sql server. what should I do? Reinstall the SQL Server instance? Here is an simpler solution from others which is really good.

Step 1. Stop all the SQL server instance and related services

Step 2. Run sqlservr -m from command. This command will start the sql server in single-user mode. sqlservr normally stored in Binn folder in SQL Server.

Step 3. Open a new command, Run SQLCMD -S -E ,type the commands next:

CREATE LOGIN [\] FROM WINDOWS

EXEC sp_addsrvrolemember @loginame=’\', @rolename=’sysadmin’

SHUTDOWN

Last Step: Restart the Sql Server instance. the command is NET Start MSSQLSERVER

ssrs feature – report model project for ad-hoc report

fiveesoft — Fri, 06 Aug 2010 04:02:19 +0000

Recently I worked on report model project come with SSRS. My first impression to this is it is so cool. By simply define the data source view and the data model, users can generate professional-view report by dragging and drop the entity’s fields. All the database relationship will be automatic generated for you. However, after looked into it for a while, I noticed that it’s not the as good as I thought. It comes with lots of cons when somebody actually use this, if they didn’t really consider this carefully before they decide use it, it may become a nightmare for them.

Here are some cons I identified, which hopefully can be recongnized by other people too.

1. The data source view and data model need to be very carefully implemented. the relationship between entities has to follow the relationship defined in the database, unique records need to be considered carefully and logical primary key is the key when define data source view. It will leave the displayed data uninconsistence with the database records if the logical primary key is misplaced or partly missing.

2. The generated report query using ad-hoc report is inefficient. It leave a lot of un-necessary relation in the database query. The reason is when the report engine try to build the query for the report, it will retrieve the data source view’s query and add all the relationship defined, and all the records defined in your entities will be selected, it leave the report required fields to be the last one to be selected from these joined queries.

Server side code in sharepoint master and layout page

fiveesoft — Thu, 18 Mar 2010 22:56:55 +0000

To add server side code to your sharepoint master page or layout page directly, instead of custom control. Simply add pageparserpath to the pageparserpaths section.

Sharepoint Webpart development with Customized ToolPart

fiveesoft — Wed, 10 Feb 2010 04:56:52 +0000

To add customized Html content to the Toolpart panel, we need develop a Toolpart object, attach it to the webpart object.

the steps to add a toolpart object to a webpart:

1. Create a ToolPart object implement the Microsoft.SharePoint.WebPartPages.ToolPart

2. override the ApplyChanges method, save the values entered in the ToolPart panel to the webpart, calling this.ParentToolPane.SelectedWebPart can get the reference object to its webpart object

3. override the GetToolParts method in the webpart class, add the customized ToolPart object to the ToolPart list

Note: to retain the properties value defined in the webpart, the properties must be set to Personalizable attribute. PeralizationScope.Shared will make the variable visible to everybody, PeralizationScope.User will make the variable consistance and retained for the specific user.

About Asp.Net ViewState

fiveesoft — Tue, 09 Feb 2010 13:12:50 +0000

ViewState can store any types of object, but the object have to be seralizable. Mark the class object as seralizable. The variables declared in the object also need to be seralizable. String, value type, and other simple type are already seralizable.

To manually modify the viewstate, it can be operated at the override method LoadViewStates and SaveViewStates.

ObjectDataSource Databinding

fiveesoft — Mon, 08 Feb 2010 09:45:35 +0000

To bind objectdatasource to data web control, the objectdatasource class need to be created first with a parameterless constructor for default databinding. The class will need at least select method for the control to populate the data.
The objectdatasource can also have a parameter constructor. It need to be called on the ObjectCreating method of the objectdatasource event.

Webpart in asp.net page

fiveesoft — Wed, 03 Feb 2010 12:37:03 +0000

To add webpart to asp.net webpage, a webpart manager is required to be added to the page, and the webpart zone need to be added to the page. The webpart can be drag and drop to the webpart zone.

Webpart manager will need database connection to store the webpart information. The default is SQL server express instance. It can be changed by modify the web.config file to specify the SQL server.

Run aspnet_regsql.exe to install the system default stored procedures, tables, etc to the database.

Windows Server 2008 Quick Notes

fiveesoft — Sat, 13 Jun 2009 03:18:11 +0000

**Remoe Windows Server 2008 Password Complexity Requirements
To turn off windows2008 password complexity check.
Follow “administrative tools” – “Local Security Policy”
Then in this area access “Account policies” – “Password Policy” and disable the password complexity check.

**Disable Enhanced Security Configuration
–Open Server Manager, go to Security Information Section –> IE Enhanced Security Configuration(ESC) –>Turn Off

Sharepoint CQWP CAML

fiveesoft — Mon, 08 Jun 2009 09:54:21 +0000

using CAML in Content Query WebPart to refine the result is an effective way to customize the result. The use of DateTime is triky.

By Default, To get Today’s Date, you can call

. the date result you get from this caml query doesn’t include the time. to include the time, add IncludeTimeValue=”True” to the Value open Tag.

The DateTime format used in SharePoint is ISO8601. To convert strand datetime format to the format which sharepoint can understand, call

SPUtility.CreateISO8601DateTimeFromSystemDateTime()

You can also retrieve the DateTime offset by days,