Archive for November, 2009


RadGrid How To – Configure a HyperLink Client Side

Filed Under: ASP.NET, Telerik by shereen — Leave a comment
November 24, 2009

I’ve been doing a lot of work recently with Telerik’s RadGrid configuration client side. This includes data binding, sorting, paging and working with columns and data rows. I’ll likely be doing a series on some of the issues I’ve encountered trying to work with these grids completely client side. The first of this series is a relatively simple thing to do server side, but I definitely had issue with it client side.

Scenario:

I have a RadGrid called rgProjects configured with several GridBoundColumn fields and a single GridHyperLinkColumn field. The data binding for this grid is being done via an ajax call to a method in another page that returns some json that I then bind to the grid. I’m leveraging the OnRowDataBound client event of this grid to perform some custom row manipulation. I figured this would be a good place to set up my HyperLink.

Step 1 - Add the GridHyperLinkColumn to the grid

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<telerik:RadGrid ID="rgProjects" EnableViewState="false" runat="server"
            GridLines="None" AutoGenerateColumns="False" AllowSorting="true" Width="100%">
            <MasterTableView TableLayout="Fixed"> 
                <Columns>
                    <telerik:GridNumericColumn DataField="ID" HeaderText="ID" />
                    <telerik:GridNumericColumn DataField="Title" HeaderText="Title" Display="false" />
                    <telerik:GridHyperLinkColumn DataTextField="Project" DataNavigateUrlFields="Project"
                        UniqueName="Project" HeaderText="Project" ItemStyle-Font-Underline="true" />
                </Columns>
            </MasterTableView>
            <ClientSettings>
                <ClientEvents OnRowDataBound="rgProjects_OnRowDataBound" />
            </ClientSettings>
</telerik:RadGrid>

The JSON that’s being returned:

[{"ID":"1204","Title":"shereen's test project","Project":"http://server.local/_layouts/Demo/editform.aspx?ID=1204"}]

So the basic idea was, I wanted my hyperlink to have it’s value set to: “shereen’s test project” and I wanted the url to be set to: http://server.local/_layouts/Demo/editform.aspx?ID=1204.

Do not confuse TITLE with VALUE. By TITLE, I mean the actual TITLE attribute of the A tag that’s used for a tooltip and by VALUE I mean the innerHTML that’s set and is actually visible to the user as the hyperlink itself.

So it would read as follows:

shereen’s test project

This was not working for me initially because both the hyperlink’s value and url were being set as the url, which is not what I wanted:

http://server.local/_layouts/Demo/editform.aspx?ID=1204

In comes the OnRowDataBound event where I can override what’s happening above with what it is I actually want:

Step 2 - Leverage the OnRowDataBound client event to configure our HyperLink

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function rgProjects_OnRowDataBound(sender, args)
{    
    // manually set the hyperlink's title
    var item = args.get_item();
    var dataItem = args.get_dataItem();
    var link = item.get_cell("Project").getElementsByTagName("a")[0];    
    link.innerHTML = dataItem.Title;
    link.href = dataItem.Project;
    link.title = dataItem.Title;
}

So the key thing to note above is you have to set the innerHTML. Title is optional, but the important ones are href and innerHTML. Any problems let me know!

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jQuery – Get All Divs Whose ID Starts With

Filed Under: Web Design by shereen — Leave a comment
November 12, 2009

Structure:

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<div id="thisismydiv1"></div>
<div id="thisismydiv2"></div>
<div id="thisismydiv3"></div>
<div id="thisismydiv4"></div>

To return an array of all divs that start with ‘thisismydiv’, you would use the following:

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var divList = $("div[id^='thisismydiv']");

The above translates to, find me all divs whose id starts with ‘thisismydiv’. You could now do something cool like add a class to all those divs:

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$("div[id^='thisismydiv']").addClass('myClass');
Tags:
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Write to EventLog from SharePoint Custom Solutions

Filed Under: SharePoint 2007 by shereen — 3 Comments
November 4, 2009

Just a quick thing to note, if you’re trying to write to the event log within your custom SharePoint solutions and run across this error:

Cannot open log for source {0}. You may not have write access.

This is definitely permissions related. A quick bit of searching and I found some useful info:

The CustomSD registry value for the Application event log is found under the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Applicationregistry key.  It is a string value which uses Security Descriptor Definition Language (SDDL) to describe which accounts have access to which functions (e.g. read, write, clear) of the event log.  By default the application event log will allow any IIS 6 application pool identity write access (either as a service logon or, in the case of custom accounts in the IIS_WPG group, as a batch logon). (reference: http://forums.asp.net/t/1131903.aspx)

So the key in the above paragraph is that the app pool identity already has permission to write to the event log, so instead of mucking around with permissions, I made sure my function for writing to the eventlog is elevated as follows:

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public static void LogMessage(string message)
{
    SPSecurity.RunWithElevatedPrivileges(delegate()
    {
        if (!EventLog.SourceExists("SharePoint Custom Solutions"))
        {
            EventLog.CreateEventSource("SharePoint Custom Solutions", "Application");
        }
 
        EventLog.WriteEntry("SharePoint Custom Solutions",
                                    message,
                                    EventLogEntryType.Error);
    });
}
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