hard learned sharepoint development tips

SHAREPOINT AND PROJECT CONFERENCE ADRIATICS 2013ZAGREB, NOVEMBER 27-28 2013

Hard learned SharePoint dev tips

SAHIL MALIK

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@SAHILMALIK

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11xMVP

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Microsoft Metro Trainer

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Hard learned SharePoint dev tips Hard learned CSOM and REST

0945AM 0345PM

Lists and Document Libraries

Lists live in SPWebs

dbo.AllLists

Primary Key for AllLists

Content Types – will make performance worse

tp_Fields

dbo.AllUserData

My Test List

Example

Example 2

tp_ColumnSet

Sparse Columns

AllUserDatatp_ID identify the list item

tp_GUID To uniquely identify the list item

tp_ListId To identify which list the item belongs to.

tp_SiteId To identify which site the item belongs to. It is the value of ‘Id’ in ‘AllSites’ table

tp_RowOrdinal Zero based ordinal index in the set of rows representing the list item

tp_Author User who created the list item

tp_Editor User who last edited the list item

tp_Modified Modified date

tp_Created Created date

tp_DeleteTransactionID Not 0x if the item is in recycle bin

tp_IsCurrentVersion (bit) 1 or 0, identifying latest version

nvarchar1..64 Stores values of application fields of type nvarchar

ntext1..32 Stores application fields of type ntext

bit1..16 Application fields of type bit

datetime1..8 Application fields of type datetime

AllUserData

float 1..12 Application fields of type float

Int1..16 Application fields of type int

sql_variant1..8 Application fields of type sql_variant

AllUserData - takeaways

Now lets talk documents!

Test Data

How are documents stored?

Document Storage

DocStreams

Scientifically accurate picture of RBS

Document Storage – Lessons Learnt

Careful of iterators!

Avoids multiple calls to DB

Does not create SPListItemCollection over and over again

Number of Items in a list

SPQuery is your friend2147483648

And its getting every single column!

Avoid reloading objects

SharePoint objects are not threadsafe!

Getting a list

proc_EnumLists

proc_MapUrlToListAndView

proc_EnumLists loads all information of all lists in the SPWeb object, and then does a .Title comparison to find the

list you need.

proc_MapUrlToListAndView finds the GUID for the associated list, and then loads the metadata for the list you

need.

Deleting Items

Good vs Evil

Evil Good

SPList.Items.Count SPList.ItemsCount

SPList.Items[Guid] SPList.GetItemByUniqueId(Guid)

SPList.Items[Int32] SPList.GetItemById(Int32)

SPList.Items.GetItemById(Int32) SPList.GetItemById(Int32

SPList.Items.NumberOfFields SPQuery + ViewFields

SPList.Items.ReorderItems Use SPQuery.ListItemCollectionPosition to do paging

SPFolder.Files.Count SPFolder.ItemCount

.Dispose

.Dispose

questions?

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thank you.

SHAREPOINT AND PROJECT CONFERENCE ADRIATICS 2013ZAGREB, NOVEMBER 27-28 2013