LoginView Control in SharePoint Web Part

When developing on a SharePoint site, if you have the need to show your logged in users content that you don't necessarily want to show your anonymous users, the LoginView control is for you.

Keeping it simple, we pass a string to the LoggedInTemplate class constructor that inherits from the iTemplate interface.

// we'll show the label only when a user is logged in. Intended for employees only.

LoginView lv = new LoginView();

Label usernameLabel = new Label();

usernameLabel.Text = "Hello There";

lv.LoggedInTemplate = new LoginViewTemplate(usernameLabel);

Controls.Add(lv);

// Logged in user and anonymous templates inherited from iTemplate interface.

    class LoginViewTemplate : ITemplate

    {

        private Label _label;

        public LoginViewTemplate(Label label)

        {

            _label = label;

        }

        public void InstantiateIn(Control container)

        {

            container.Controls.Add(_label);

        }

    }

// not used in this example

    class AnonymousTemplate : ITemplate

    {

        private Label _label;

        public AnonymousTemplate(Label label)

        {

            _label = label;

        }

        public void InstantiateIn(Control container)

        {

            container.Controls.Add(_label);

        }

    }

For further filtering out your logged in users to see specific content, use RoleGroups instead.

Replacing parentheses in Haivision CoolSigns data table items

When using an RSS feed to populate a data table in Haivision CoolSigns, apostrophes will be replaced by its HTML encoded entity, "'". When working with the data table in Content Creator, you'll need to use the following javascript to decode the HTML entity back to an apostrophe. Notice that the use of RegEx and the global flag is needed to catch multiple apostrophes.

return GetValueEx("title",rowindex,timeoffset,"").replace(/'/g,"'")

Using Globally defined arrays in Crystal Reports

In Crystal Reports you can use a globally defined array to determine whether or not any given record will show on a report. Case in point, a record is pulled into your report multiple times due to a join condition. We want to suppress one of the records so only one shows on the report. In our case, we want to keep all records with note # 0033. If any record with note # 0033 is not duplicated with a different note number, that record we want to keep.

To begin, we'll want to initialize our variables in a function. This function is dropped in the Report header:

Global numberVar array ClassNumberArray;
Global numberVar CNCount := 1;
Redim ClassNumberArray[1];

The following function we will want to drop into the Details section of the report. This function runs during the Record Reading pass:

WhileReadingRecords;
Global numberVar CNCount;
Global numberVar array ClassNumberArray;
Redim preserve ClassNumberArray[CNCount];
ClassNumberArray[CNCount] := {RDS_CLASS_VW.CLASS_CLASS_NBR};
CNCount := CNCount + 1;

Our global array is now filled. The following function (we'll call it 'ClassNumber Count' and refer to it later) also gets dropped in the Details section of the report and we'll have it run during the next pass, the Record Printing pass.

WhilePrintingRecords;
Global numbervar array ClassNumberArray;
local numberVar j := 0;
numbervar i;

For i:=1 to Count(ClassNumberArray) do
    if ({RDS_CLASS_VW.CLASS_CLASS_NBR} = ClassNumberArray[i]) then
        j := j + 1;
j;

The variable "j" now holds the number of times that record is duplicated in the set of records.

Now in Section Expert, we'll create a rule for suppressing records:

{REC_CLASS_NOTES_VW.NOTES_NOTE_NBR} = "0033" and {@ClassNumber Count} > 1

// delete any records with note # 0033 that show up two times or more in the array.

That's it. When a record shows up more then once, the record with note # 0033 is the one that is removed.