Here is how I created custom columns within Document Libraries and Lists which display data from Dynamics

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Hello Nick,

Tnaks for the great article. But I've some more doubts.

I am creating a custom field type for sharepoint list.

I created the custom field by inheriting the sharepoint base field SPFieldMultiLineText.  I‘ve also created a custom field property

“SearchPath” as follows…

private string _searchPath

       public string SearchPath

       {

           get

           {

               return _ searchPath;

           }                                                                        

           set

           {

               this._ searchPath = value;

           }

       }

for rendering custom property I have created an .ascx file along with a code-behind inherited from User Control and  IFieldEditor.

I could able to access and modify the custom property from within the  methods InitializeWithField()  and OnSaveChange().

I have created another .ascx file and a code-behind file as Field rendering Usercontrol inherited from BaseFieldControl for providing UI for data entry into the listt. I want to implement some logic during this data entry based on the custom field’s additional property value.

But my problem is I could not access the custom property of my custom field class from within the Field Rendering User control.

How I can access the custom field’s custom property values within the field rendering usercontrol?

Please help me.

Arun

Hi Nick,

Did you try to edit in datsheet? In my list, the custom fields appear red-only in datasheet. Do you know how to fix this?

Thanks,

Dan

I have successfully implemented your custom field type.

now i have a problem.

i need to get the clientid of the textbox in my.ascx.

it is always returning null.

please send me a solution for this

hi

I want to create custom field that is not editable by user and get it's value base on content Type of item that will be created and some other things. my problem is when user begin create to new item(e.g from A content Type) that item actually is null until user click OK, and I can't get its type from ListItem.ContentType.Name because ListItem is null? is there any method of this class or in other class to get type of item in creation state.

MSDN docs show an "On" not an "In" in the names; "ShowOnListCreate" instead of "ShowInListCreate", same for the others.

The field property names should be "ShowOn..."  not "ShowIn...".   So "ShowInListCreate" should be "ShowOnListCreate".  

See here: msdn2.microsoft.com/.../microsoft.sharepoint.spfieldtypedefinition.showonlistcreate.aspx

and here msdn2.microsoft.com/.../aa544201.aspx

Hi,

I am trying to use a custom field rendering control in a list view, instead of using the <RenderPattern> element in the fldtypes xml file.  MSDN docs say I should be able to assign a rendering control in display mode as well as edit and new mode.  Is display mode the same as list view?

protected override System.Web.UI.ITemplate ControlTemplate        

{            

   get          

   {                              

       if (ControlMode == Microsoft.SharePoint.WebControls.SPControlMode.Display)                

       {                    

           return SPControlTemplateManager.GetTemplateByName("DisplayVoteFieldControl");                    

          //return base.DisplayTemplate;                  

           // return base.ControlTemplate;                

       }                

      else              

      {                  

            return base.ControlTemplate;                

       }                            

   }        

}

This is how I am trying to switch rendering controls in my BaseFieldControl class.  I have noticed, though, that the ControlTemplate get accessor is not getting called at all in list view.

Hi,

 Is there any way to deploy/install custom filed types for only specific sharepoint site on farm and not for others. for e.g In my farm I want to install custom filed type for site A and not for sites B,C,D etc(these can top level sites or child sites of a top site.).

Thanks in Advance.

Nick,

  For the customfieldcontrol class why not inherit from BaseTextField or TextField instead of BaseFieldControl?

Nick,

 Can you show how to make a custom lookup field derived from SPFieldLookup?

  Thanks

Thanks for posting this sample. I should be able to adapt it to meet my needs. First I want to make it work as you described it, but I have run into a couple issues.

First, in the ascx assembly reference, I had to remove "s" from "CustomControls". No problem.

Second, the data appears to save and display correctly in view mode, but not in edit mode. It puts LASTNAME FirstName in the first field because it is trying to Split value, which is LASTNAME FirstName at that point rather than FirstName%LastName. I will try to figure this out myself, but if you can possibly look into it too that would be a great help, as I am new to both C# and Sharepoint development.

Thanks a lot!

i've found variations of the same solution on many sites so far. Everything dealing with custom controls has shown how to store data, and display that data using the fldtypes*.xml

let's say you want to display something from the SPAudit for each document. Is there a way of doing this?

Any help would be appreciated. Even if it's just an example on how to show the current Date would help me on my way

C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\XML\FLDTYPES_AccountField.xml

<?xml version="1.0" encoding="utf-8"?>

<FieldTypes>

 <FieldType>

   <Field Name="TypeName">AccountField</Field>

   <Field Name="ParentType">Text</Field>

   <Field Name="TypeDisplayName">Account name</Field>

   <Field Name="TypeShortDescription">Account name</Field>

<Field Name="UserCreatable">TRUE</Field>

<Field Name="ShowOnDocumentLibrary">TRUE</Field>

<Field Name="ShowOnListCreate">FALSE</Field>

<Field Name="ShowOnSurveyCreate">FALSE</Field>

<Field Name="ShowOnColumnTemplateCreate">FALSE</Field>

<Field Name="Sortable">FALSE</Field>

<Field Name="Filterable">FALSE</Field>

<Field Name="SQLType">nvarchar</Field>

<Field Name="FieldTypeClass">

Account_Name.AccountField,

Account_Name,Version=1.0.0.0,Culture=neutral,

PublicKeyToken=49950b16a925559b

</Field>

 </FieldType>

</FieldTypes>

-------------------

using System;

using System.Collections.Generic;

using System.Text;

using System.Web;

using System.Web.UI;

using Microsoft.SharePoint;

using Microsoft.SharePoint.WebControls;

namespace Account_Name

{

   public class AccountFieldControl : TextField

   {

       protected override void CreateChildControls()

       {

           base.CreateChildControls();

           if (base.Field != null)

           {

               if (base.ControlMode.Equals(SPControlMode.New) ||

               base.ControlMode.Equals(SPControlMode.Edit))

               {

                   string currentValue = (base.ItemFieldValue == null ? string.Empty : base.ItemFieldValue.ToString());

                   if (string.IsNullOrEmpty(currentValue))

                   {

                       string parentValue = string.Empty;

                       try

                       {                          

                           SPFolder parentFolder = base.ListItem.File.ParentFolder;

                           parentValue = parentFolder.Name.ToString();                          

                       }

                       catch

                       { }

                       base.ItemFieldValue = parentValue;

                   }

               }

           }

       }

   }

}

----------------------

using System;

using System.Collections.Generic;

using System.Text;

using System.Web;

using System.Web.UI;

using Microsoft.SharePoint;

using Microsoft.SharePoint.WebControls;

namespace Account_Name

{

   public class AccountField : SPFieldText

   {

       public AccountField(SPFieldCollection fields,string fieldName): base(fields, fieldName)

       {            

       }

       public AccountField(SPFieldCollection fields, string typeName, string displayName)

           : base(fields, typeName, displayName)

       {

       }

       public override BaseFieldControl FieldRenderingControl

       {

           get

           {

               // Use our custom control when the field is rendered.

               BaseFieldControl control = new AccountFieldControl();

               control.FieldName = base.InternalName;

               //control.CssClass = "ms-hidden";

               control.DisableInputFieldLabel = true;

               return control;

           }

       }

       public override string GetValidatedString(object value)

       {

           return value.ToString();

       }  

   }

}

---------------

restart iis

--------------

go to sharepoint document library & add the new control type

Hello Nick (and Erin), any luck figuring out the issue Erin brought to our attention?

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I want to implement a combobox that will offer 1-n possible values to set in the property of my custom field when creating it, not when using it in the Sharepoint sites.

I was able to show an empty Combobox to users when creating the custom field, but I don't know how to fill it with values.

<PropertySchema>

 <Fields>

   <Field Name="Type" DisplayName="Select type" Type="Choice" />

   </Field>

 </Fields>

</PropertySchema>

How would I fill the ComboBox with "A";"B";"C", when setting the properties for my new custom field?

Thanks

hi ,, i require a custom list to count folder size......

I am trying to find the sharepoint dlls. I am looking under

C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\ISAPI

but all I find is a bunch of xml files. Any ideas?

Hai Nick,

Can you elaborate your code from start to end with a screen shot.Or can you help me to generate unique id for each service request in helpdesk template site.But please do show it step by step.

with regards Anand

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i am not able to create a datasheet view in moss 2007

link whcih allows to create  a datasheet view is not visible

How do we create custom upload field type, does any body have any idia?

Thanks

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Thanks

Hi Nick

I'm trying to have a new calendar in sharepoint.I have some ways in my mind.it would be very kind of you to help me find the way

I could create a new date column as you said in sharepoint and change all the stored procedures in sql that select the data for sharepoint lists

the other way is to create a calendar for windows i mean change one of the current ones but i'm not sure what to do please help me out

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Nick,

Any luck on SPFieldLookup (with multiple values)

Appreciate if  you can post some code.

Iam trying to populate treeview and use an SPFieldLookUp (multi).

Need your help

Prat

A Good one

While I am trying to create a custom field which store the value such as webservice url or any other string.

Any Help will be helpfull, if u can.

Hi,

I have created Same Field with exact same code but getting folloing error.

"The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047) "

Issue of saving the  custom field type values through dataformwepart (custom list form webpart).

Many thanks for an awesome post - it really has been useful. I've managed to implement the custom field control in MOSS and succesfully hooked it up to a content type.

I'd like to be able to use this field in my page layout, however it complains that it doesn't recognise the server tag. I've tried dragging and dropping the field from the list of content fields using SPD which automatically generates the required markup ie:

<CustomTag_0:customfieldcontrol ID="NameControl" FieldName="test" runat="server"></CustomTag_0:customfieldcontrol>

I then inserted a Register statement at the top of the pagelayout:

<%@ Register TagPrefix="CustomTag_0"

Namespace="CustomField.CustomField",

Assembly="CustomField, Version=0.0.0.0, Culture=neutral, PublicKeyToken=91e52169c28db0da" %>

Any ideas where I may be going wrong?!

Has anyone been able to figure out how to make the fields editable in the datasheet view?

Hey guys, just happened upon this post whilst doing some custom field type development.

To answer an earlier query that Erin raised, the issue is caused by the GetValidatedString function - this function is not called on display as you thought, but is called when setting the value of the field (i.e. saving the modified list item), the return value of which is the value saved to the field. This is why when editing the field again, the value appears only in the first textbox, because there is no % to split by.

There are two possible solutions to this problem:

1.) Modify the Value property in customfieldcontrol to not insert % and split at first space (could introduce issues if the user enters a space in the first textbox though)

2.) Use a render pattern displaypattern to alter the displayed value in all items view.

As far as I know, there is no other way besides render patterns with which to alter the displayed value of a field to be different to it's stored value.

Hope this helps!