Number bar of unchangeable values

We know Moss All column types in Spfield Class inherited. In the new column type, the default type of the item is "Number". What we need is a read-only number column, so we can use this one.

OpenSDKDocument. The type of this number column isSpfieldnubmer, It also derivesSpfieldcurrencyClass, we also derive a class called readonlycountfield.

I would like to make a complete customFieldBut I have been busy recently. I accidentally deleted half of the last write, and I was so lazy to use this simple method.

Create a new project readonlycountfield. Add a readonlycountfield. CS file and add the following content:

Public   Class Readonlycountfield: spfieldnumber
{
Public Readonlycountfield (spfieldcollection fields, String Fieldname)
: Base (Fields, fieldname)
{
This. Showineditform= False;
This. Defaultvalue= "0";
}
Public Readonlycountfield (spfieldcollection fields, String Typename, String Displayname)
: Base (Fields, typename, displayname)
{
This. Showineditform= False;
This. Defaultvalue= "0";
}
Public   Override Basefieldcontrol fieldrenderingcontrol
{
Get
{< br> basefieldcontrol Control = New numberfield ();
control. fieldname = base . internalname;
return control;
}
}
}

 

View SDK Document discovery Field There is a showineditform attribute, which I thought was in the setting, so I didn't need to get this read-only field, but I haven't found it for a long time, so I thought of deriving a new class, change this value in the constructor False . So the only thing we need to do in this file is to set the default value in the constructor. Easy to use ~~ We also reload a fieldrenderingcontrol method, which returns Control , This Control Class inherits the basefieldcontrol class. If you want to customize Field You need to write a basefieldcontrol-derived Control Control. There are a lot of online tutorials. Review SDK The document will find that each Moss Built-in Field There will be a corresponding Control Class

 

Add anotherFldtypes _ReadonlycountField. xml file

<? XML version = "1.0" encoding = "UTF-8" ?>
< Fieldtypes >
< Fieldtype >
< Field Name = "Typename" > Readonlycountfield </ Field >
< Field Name = "Parenttype" > Number </ Field >
< Field Name = "Typedisplayname" > Read-Only number </ Field >
< Field Name = "Typeshortdescription" > Unmodifiable read-only number </ Field >
< Field Name = "Usercreatable" > True </ Field >
< Field Name = "Showinlistcreate" > True </ Field >
< Field Name = "Showinsurveycreate" > True </ Field >
< Field Name = "Show.cumentlibrarycreate" > True </ Field >
< Field Name = "Showincolumntemplatecreate" > True </ Field >
< Field Name = "Showineditform" > False </ Field >
< Field Name = "Fieldtypeclass" > Readonlycountfield, readonlycountfield, version = 1.0.0.0, culture = neutral, publickeytoken = 239ba512823b3816 </ Field >
</ Fieldtype >
</ Fieldtypes >

 

This file must start with fldtypes, this defines a type of our custom property. If you are interested in moss Field interested, you can view fldtypes under \ Program Files \ common files \ microsoft shared \ Web Server Extensions \ 12 \ template \ XML. do not modify XML files ...... It's troublesome if something goes wrong.

There is also the value in <field name = "fieldtypeclass">, the first class name with namespace,The second isProgramSet, the last publickeytoken = followed by a strong nameKeyValue. You need to follow the next step to build a strong name before you can know. Use reflector to open the compiledDLL.

 

Create a strong name for the project, that is, the signature in the project property, hook up the Assembly signature, and then create a newKey, Remove the password protection (not available), and deploy it after compilation.

 

Create a text file namedInstall. bat, Enter the following content

" % ProgramFiles % \ Microsoft Visual Studio 8 \ SDK \ V2.0 \ bin \ gacutil.exe "   - UF readonlycountfield
" % ProgramFiles % \ Microsoft Visual Studio 8 \ SDK \ V2.0 \ bin \ gacutil.exe "   - If Bin \ debug \ readonlycountfield. dll

Copy / Y fldtypes_hitscountfield.xml " % Commonprogramfiles % \ microsoft shared \ Web Server Extensions \ 12 \ template \ XML \ "

Iisreset

 

Run thisBat,OKAfter the deployment is complete, go to the new column to see if there is a type of "unmodifiable read-only number.