hello
I am creatinga customfieldtypethatinherits from alookup.Wellbelowthe codeofVaireclasses:
-Theclass that derives fromSPFieldLookup
namespace CustomTypeFieldLkUpFilter.CustomControlsCTFFilter
{
class CustomTypeFieldLkUpFilter : SPFieldLookup
{
public CustomTypeFieldLkUpFilter(SPFieldCollection fields, string fieldName) : base(fields, fieldName) { }
public CustomTypeFieldLkUpFilter(SPFieldCollection fields, string fieldName, string displayName) : base(fields, fieldName, displayName) { }
/// <summary>
/// metodo che definisce come renderizza il controllo sulla form page
/// </summary>
public override BaseFieldControl FieldRenderingControl
{
[SharePointPermission(SecurityAction.LinkDemand, ObjectModel = true)]
get
{
BaseFieldControl ctr = new CustomTypeFieldLkUpFilterControl();
ctr.FieldName = this.InternalName;
return ctr;
}
}
public override object GetFieldValue(string value)
{
if (string.IsNullOrEmpty(value))
return null;
SPFieldLookupValueCollection field = new SPFieldLookupValueCollection();
SPFieldLookupValue newValue = new SPFieldLookupValue(1, "aaa");
field.Add(newValue);
newValue = new SPFieldLookupValue(2, "bbb");
field.Add(newValue);
return field;
}
public override void OnAdded(SPAddFieldOptions op)
{
base.OnAdded(op);
Update();
}
public override string GetValidatedString(object value)
{
if ((this.Required == true)
&&
((value == null)
||
((String)value == "")))
{
throw new SPFieldValidationException(this.Title
+ " must have a value.");
}
return String.Format("{0}", value);
}
public override void Update()
{
SPSecurity.RunWithElevatedPrivileges(delegate()
{
using (SPSite site = new SPSite(SPContext.Current.Web.Url))
{
using (SPWeb web = site.OpenWeb())
{
SPList list = web.Lists["Misure"];
base.LookupList = list.ID.ToString();
base.LookupField = "Title";
base.AllowMultipleValues = true;
base.LinkToItemAllowed = ListItemMenuState.Allowed;
base.LinkToItem = true;
base.Update();
}
}
});
}
}
}
-- the XML file fldtypes_CustomTypeFieldLkUpFilter.xml
<?xml version="1.0" encoding="utf-8" ?>
<FieldTypes>
<FieldType>
<Field Name="TypeName">CustomTypeFieldLkUpFilter</Field>
<Field Name="TypeDisplayName">Custom Type Field LkUp Filter</Field>
<Field Name="TypeShortDescription">CustomTypeFieldLkUpFilter</Field>
<Field Name="ParentType">LookupMulti</Field>
<Field Name="UserCreatable">TRUE</Field>
<Field Name="FieldTypeClass">CustomTypeFieldLkUpFilter.CustomControlsCTFFilter.CustomTypeFieldLkUpFilter, $SharePoint.Project.AssemblyFullName$</Field>
<Field Name="Sortable">TRUE</Field>
<Field Name="Filterable">TRUE</Field>
</FieldType>
</FieldTypes>
-- the user control ascx CustomTypeFieldLkUpFilterControl.ascx
<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>
<%@ Assembly Name="Microsoft.Web.CommandUI, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register TagPrefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register TagPrefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register TagPrefix="asp" Namespace="System.Web.UI" Assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
<%@ Import Namespace="Microsoft.SharePoint" %>
<%@ Register TagPrefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Control Language="C#" %>
<SharePoint:RenderingTemplate runat="server" ID="SRBaseFiledControlforEdit">
<Template>
<h1>SRBaseFiledControlforEdit</h1>
<asp:Literal runat="server" ID="ltrlFieldValue"></asp:Literal>
<asp:TextBox ID="inputTexTBox" runat="server"></asp:TextBox>
</Template>
</SharePoint:RenderingTemplate>
<SharePoint:RenderingTemplate runat="server" ID="SRBaseFiledForDisplay">
<Template>
<h1>SRBaseFiledForDisplay</h1>
<asp:Literal runat="server" ID="ltrlFieldValue"></asp:Literal>
</Template>
</SharePoint:RenderingTemplate>
-- la class control CustomTypeFieldLkUpFilterControl.cs
namespace CustomTypeFieldLkUpFilter.CustomControlsCTFFilter.Controls
{
class CustomTypeFieldLkUpFilterControl : BaseFieldControl
{
protected Literal ltrlFieldValue;
protected TextBox inputTexTBox;
#region Metodi in override
protected override void CreateChildControls()
{
base.CreateChildControls();
if (ControlMode == SPControlMode.Display)
{
InitializeView();
return;
}
if (this.Field != null && this.ControlMode != SPControlMode.Invalid)
{
InitializeEdit();
inputTexTBox.Text = "cornuto";
}
}
protected override string DefaultTemplateName
{
get
{
if (this.ControlMode == SPControlMode.Display)
{
//visualizza nel Displayform
return this.DisplayTemplateName;
}
else
{
//visualizza negli altri form
return "SRBaseFiledControlforEdit";
}
}
}
public override string DisplayTemplateName
{
get
{
return "SRBaseFiledForDisplay";
}
}
public override object Value
{
get
{
EnsureChildControls();
SPFieldLookupValueCollection field = new SPFieldLookupValueCollection();
SPFieldLookupValue newValue = new SPFieldLookupValue(1, "aaa");
field.Add(newValue);
newValue = new SPFieldLookupValue(2, "bbb");
field.Add(newValue);
//ltrlFieldValue.Text = "set Interno";
return field.ToString();
}
set
{
//SPFieldLookupValueCollection lkpValueCollection = (SPFieldLookupValueCollection)this.ItemFieldValue;
//extendedLookupValue.Value = lkpValueCollection.ToSemicolumnSeparatedLookupIds();
//extendedLookupTextBox.Text = lkpValueCollection.ToSemicolumnSeparatedLookupValues();
EnsureChildControls();
ltrlFieldValue.Text = value.ToString();
}
}
public override void UpdateFieldValueInItem()
{
//string ppp = inputTexTBox.Text;
base.UpdateFieldValueInItem();
}
#endregion
private void InitializeView()
{
ltrlFieldValue = (Literal)this.TemplateContainer.FindControl("ltrlFieldValue");
if (ltrlFieldValue == null) throw new ArgumentException("Literal ltrlFieldValue non trovata");
}
private void InitializeEdit()
{
ltrlFieldValue = (Literal)this.TemplateContainer.FindControl("ltrlFieldValue");
if (ltrlFieldValue == null) throw new ArgumentException("Literal ltrlFieldValue non trovata");
inputTexTBox = (TextBox)this.TemplateContainer.FindControl("inputTexTBox");
if (inputTexTBox == null) throw new ArgumentException("TextBox inputTexTBox non trovata");
}
}
}
AS YOU CAN SEEIN THEMETHODGETTHEVALUECREATEDASPFieldLookupValueCollection
WELLTHECOLUMNDOESBRINGTHE VALUESCORRECTLY, BUT WHENI GOON THESHOWISALLITEMS.APSX
LISTBELOW
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HAVE SOMETIPS
HELLO
